Publikationen

Number of items: 362.

Articles in a Scientific Journal - peer-reviewed

[thumbnail of fmars-11-1357646.pdf] [thumbnail of Data Sheet 1-2.PDF]

Devresse, Q. , Becker, K. W. and Engel, A. (2024) Distribution of polysaccharidic and proteinaceous gel−like particles in three cyclonic eddies in the Eastern Tropical North Atlantic. Open Access Frontiers in Marine Science, 11 . Art.Nr. 1357646. DOI 10.3389/fmars.2024.1357646.

[thumbnail of Limnology Oceanography - 2024 - Zhou - Promoting effects of aluminum addition on chlorophyll biosynthesis and growth of.pdf] [thumbnail of lno12558-sup-0001-supinfo.docx]

Zhou, L., Liu, F., Achterberg, E. P. , Engel, A. , Campbell, P. G. C., Fortin, C., Huang, L. and Tan, Y. (2024) Promoting effects of aluminum addition on chlorophyll biosynthesis and growth of two cultured iron‐limited marine diatoms. Open Access Limnology and Oceanography . DOI 10.1002/lno.12558.

[thumbnail of Limnology Oceanography - 2024 - Yuan - Switches between nitrogen limitation and nitrogen phosphorus co‐limitation in the.pdf] [thumbnail of lno12541-sup-0001-supinfo.docx]

Yuan, Z., Achterberg, E. P. , Engel, A. , Dai, M. and Browning, T. J. (2024) Switches between nitrogen limitation and nitrogen–phosphorus co‐limitation in the subtropical North Atlantic Ocean. Open Access Limnology and Oceanography . DOI 10.1002/lno.12541.

[thumbnail of Environmental Microbiology - 2024 - Wietz - The Arctic summer microbiome across Fram Strait Depth longitude and.pdf]

Wietz, M., Engel, A. , Ramondenc, S., Niwano, M., von Appen, W., Priest, T., von Jackowski, A. , Metfies, K., Bienhold, C. and Boetius, A. (2024) The Arctic summer microbiome across Fram Strait: Depth, longitude, and substrate concentrations structure microbial diversity in the euphotic zone. Open Access Environmental Microbiology, 26 (2). Art.Nr. e16568. DOI 10.1111/1462-2920.16568.

[thumbnail of s43247-023-01140-6.pdf]

Engel, A. , Cisternas-Novoa, C., Hauss, H. , Kiko, R. and Le Moigne, F. A. C. (2023) Hypoxia-tolerant zooplankton may reduce biological carbon pump efficiency in the Humboldt current system off Peru. Open Access Communications Earth & Environment, 4 (1). Art.Nr. 458. DOI 10.1038/s43247-023-01140-6.

[thumbnail of chamba-et-al-2023-evidence-of-nitrate-based-nighttime-atmospheric-nucleation-driven-by-marine-microorganisms-in-the.pdf]

Chamba, G., Rissanen, M., Barthelmess, T., Saiz-Lopez, A., Rose, C., Iyer, S., Saint-Macary, A., Rocco, M., Safi, K., Deppeler, S., Barr, N., Harvey, M., Engel, A. , Dunne, E., Law, C. S. and Sellegri, K. (2023) Evidence of nitrate-based nighttime atmospheric nucleation driven by marine microorganisms in the South Pacific. Open Access PNAS Proceedings of the National Academy of Sciences of the United States of America, 120 (48). Art.Nr. e2308696120. DOI 10.1073/pnas.2308696120.

[thumbnail of acp-23-12949-2023-1.pdf]

Sellegri, K., Barthelmess, T., Trueblood, J., Cristi, A., Freney, E., Rose, C., Barr, N., Harvey, M., Safi, K., Deppeler, S., Thompson, K., Dillon, W., Engel, A. and Law, C. (2023) Quantified effect of seawater biogeochemistry on the temperature dependence of sea spray aerosol fluxes. Open Access Atmospheric Chemistry and Physics, 23 (20). pp. 12949-12964. DOI 10.5194/acp-2022-790.

[thumbnail of JGR Biogeosciences_2023_Krause_GlacierDerived.pdf]

Krause, J., Zhu, X., Höfer, J., Achterberg, E. P. , Engel, A. , Meire, L., Stuart‐Lee, A. E. and Hopwood, M. J. (2023) Glacier‐Derived Particles as a Regional Control on Marine Dissolved Pb Concentrations. Journal of Geophysical Research: Biogeosciences, 128 (10). Art.Nr. e2023JG007514. DOI 10.1029/2023JG007514.

[thumbnail of elementa.2023.00032.pdf]

Tinel, L., Abbatt, J., Saltzman, E., Engel, A. , Fernandez, R., Li, Q., Mahajan, A. S., Nicewonger, M., Novak, G., Saiz-Lopez, A., Schneider, S. and Wang, S. (2023) Impacts of ocean biogeochemistry on atmospheric chemistry. Open Access Elementa: Science of the Anthropocene, 11 (1). Art.Nr. 00032.. DOI 10.1525/elementa.2023.00032.

[thumbnail of Limnology Oceanography - 2023 - Yuan - Phytoplankton community response to episodic wet and dry aerosol deposition in the.pdf]

Yuan, Z., Achterberg, E. P. , Engel, A. , Wen, Z., Zhou, L., Zhu, X., Dai, M. and Browning, T. J. (2023) Phytoplankton community response to episodic wet and dry aerosol deposition in the subtropical North Atlantic. Open Access Limnology and Oceanography, 68 (9). pp. 2126-2140. DOI 10.1002/lno.12410.

[thumbnail of s41586-023-06439-0.pdf]

Browning, T. J. , Saito, M. A., Garaba, S. P., Wang, X., Achterberg, E. P. , Moore, C. M., Engel, A. , Mcllvin, M. R., Moran, D., Voss, D., Zielinski, O. and Tagliabue, A. (2023) Persistent equatorial Pacific iron limitation under ENSO forcing. Open Access Nature . DOI 10.1038/s41586-023-06439-0.

[thumbnail of JGR Oceans - 2023 - Devresse.pdf] [thumbnail of 2023jc019821-sup-0001-supporting information si-s01.docx]

Devresse, Q. , Becker, K. W. , Dilmahamod, A. F., Ortega‐Retuerta, E. and Engel, A. (2023) Dissolved Organic Matter Fluorescence as a Tracer of Upwelling and Microbial Activities in Two Cyclonic Eddies in the Eastern Tropical North Atlantic. Open Access Journal of Geophysical Research: Oceans, 128 (8). Art.Nr. e2023JC019821. DOI 10.1029/2023JC019821.

[thumbnail of fmicb-14-1180321.pdf]

Sun, C. C., Zhao, W. J., Yue, W. Z., Cheng, H., Sun, F. L., Wang, Y. T., Wu, M. L., Engel, A. and Wang, Y. S. (2023) Polymeric carbohydrates utilization separates microbiomes into niches: insights into the diversity of microbial carbohydrate-active enzymes in the inner shelf of the Pearl River Estuary, China. Open Access Frontiers in Microbiology, 14 . Art.Nr. 1180321. DOI 10.3389/fmicb.2023.1180321.

[thumbnail of 1-s2.0-S0272771423000616-main.pdf]

Stuart-Lee, A. E., Mortensen, J., Juul-Pedersen, T., Middelburg, J. J., Soetaert, K., Hopwood, M. J. , Engel, A. and Meire, L. (2023) Influence of glacier type on bloom phenology in two Southwest Greenland fjords. Open Access Estuarine, Coastal and Shelf Science, 284 . Art.Nr. 108271. DOI 10.1016/j.ecss.2023.108271.

[thumbnail of 1520-0477-BAMS-D-21-0063.1.pdf]

Sellegri, K., Harvey, M., Peltola, M., Saint-Macary, A., Barthelmess, T., Rocco, M., Moore, K. A., Cristi, A., Peyrin, F., Barr, N., Labonnote, L., Marriner, A., McGregor, J., Safi, K., Deppeler, S., Archer, S., Dunne, E., Harnwell, J., Delanoe, J., Freney, E., Rose, C., Bazantay, C., Planche, C., Saiz-Lopez, A., Quintanilla-López, J. E., Lebrón-Aguilar, R., Rinaldi, M., Banson, S., Joseph, R., Lupascu, A., Jourdan, O., Mioche, G., Colomb, A., Olivares, G., Querel, R., McDonald, A., Plank, G., Bukosa, B., Dillon, W., Pelon, J., Baray, J. L., Tridon, F., Donnadieu, F., Szczap, F., Engel, A. , DeMott, P. J. and Law, C. S. (2023) Sea2Cloud: From Biogenic Emission Fluxes to Cloud Properties in the Southwest Pacific. Bulletin of the American Meteorological Society, 104 (5). E1017-E1043. DOI 10.1175/BAMS-D-21-0063.1.

[thumbnail of ocean-observing-2023-galgani.pdf]

Galgani, L., Hepach, H. , Becker, K. W. and Engel, A. (2023) Sediment Traps: A Renowned Tool in Oceanography Applied to New Marine Pollutants. Open Access Oceanography, 36 (Suppl. 1). pp. 52-54. DOI 10.5670/oceanog.2023.s1.16.

[thumbnail of fmicb-13-1096062.pdf] [thumbnail of Data Sheet 1.docx]

Perner, M. , Wallmann, K. , Adam-Beyer, N., Hepach, H. , Laufer-Meiser, K., Böhnke, S., Diercks, I., Bange, H. W. , Indenbirken, D., Nikeleit, V., Bryce, C., Kappler, A., Engel, A. and Scholz, F. (2022) Environmental changes affect the microbial release of hydrogen sulfide and methane from sediments at Boknis Eck (SW Baltic Sea). Open Access Frontiers in Microbiology, 13 . Art.Nr. 1096062. DOI 10.3389/fmicb.2022.1096062.

[thumbnail of bg-19-5199-2022.pdf] [thumbnail of bg-19-5199-2022-supplement.pdf]

Devresse, Q., Becker, K. W. , Bendinger, A., Hahn, J. and Engel, A. (2022) Eddy-enhanced primary production sustains heterotrophic microbial activities in the Eastern Tropical North Atlantic. Open Access Biogeosciences (BG), 19 . pp. 5199-5219. DOI 10.5194/bg-19-5199-2022.

[thumbnail of Galgani_Engel_2022_ACS.pdf] [thumbnail of es2c04712_si_001.pdf]

Galgani, L., Goßmann, I., Scholz-Böttcher, B., Jiang, X., Liu, Z., Scheidemann, L., Schlundt, C. and Engel, A. (2022) Hitchhiking into the Deep: How Microplastic Particles are Exported through the Biological Carbon Pump in the North Atlantic Ocean. Open Access Environmental Science & Technology, 56 . pp. 15638-15649. DOI 10.1021/acs.est.2c04712.

[thumbnail of fmars-09-955488.pdf] [thumbnail of 6195652.zip]

Scheidemann, L., Pontiller, B., Manna, V., Cisternas-Novoa, C., Celussi, M., Tsiola, A., Pitta, P., Magiopoulos, I. and Engel, A. (2022) Dynamics and enzymatic degradation of exopolymer particles under increasing concentrations of silver ions and nanoparticles during a marine mesocosm experiment. Open Access Frontiers in Marine Science, 9 . Art.Nr. 955488. DOI 10.3389/fmars.2022.955488.

[thumbnail of Milinkovic_Engel_2022.pdf]

Milinkovic, A., Penezic, A., Kusan, A. C., Gluscic, V., Zuzul, S., Skejic, S., Santic, D., Godec, R., Pehnec, G., Omanovic, D., Engel, A. and Frka, S. (2022) Variabilities of biochemical properties of the sea surface microlayer: Insights to the atmospheric deposition impacts. Science of the Total Environment, 838 . Art.Nr. 156440. DOI 10.1016/j.scitotenv.2022.156440.

[thumbnail of Environmental Microbiology - 2022 - Piontek - Organic matter availability drives the spatial variation in the community.pdf]

Piontek, J., Meeske, C., Hassenrück, C., Engel, A. and Jürgens, K. (2022) Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton. Open Access Environmental Microbiology, 24 (9). pp. 4030-4048. DOI 10.1111/1462-2920.16087.

[thumbnail of Environmental_Microbiology_2022_Jackowski.pdf]

von Jackowski, A., Becker, K. W., Wietz, M., Bienhold, C., Zäncker, B., Nöthig, E. and Engel, A. (2022) Variations of microbial communities and substrate regimes in the eastern Fram Strait between summer and fall. Open Access Environmental Microbiology, 24 (9). pp. 4124-4136. DOI 10.1111/1462-2920.16036.

[thumbnail of Pinxteren_Engel_2022.pdf] [thumbnail of Pinxteren_Engel_2022_Suppl.pdf]

van Pinxteren, M., Robinson, T. B., Zeppenfeld, S., Gong, X., Bahlmann, E., Fomba, K. W., Triesch, N., Stratmann, F., Wurl, O., Engel, A. , Wex, H. and Herrmann, H. (2022) High number concentrations of transparent exopolymer particles in ambient aerosol particles and cloud water - a case study at the tropical Atlantic Ocean. Open Access Atmospheric Chemistry and Physics, 22 (8). pp. 5725-5742. DOI 10.5194/acp-22-5725-2022.

[thumbnail of acs.est.1c04512.pdf]

Santana-Casiano, J. M., González-Santana, D., Devresse, Q., Hepach, H. , Santana-González, C., Quack, B., Engel, A. and González-Dávila, M. (2022) Exploring the Effects of Organic Matter Characteristics on Fe(II) Oxidation Kinetics in Coastal Seawater. Open Access Environmental Science & Technology, 56 (4). pp. 2718-2728. DOI 10.1021/acs.est.1c04512.

[thumbnail of annurev-marine-041921-090849.pdf]

Engel, A. , Kiko, R. and Dengler, M. (2022) Organic Matter Supply and Utilization in Oxygen Minimum Zones. Annual Review of Marine Science, 14 (1). pp. 355-378. DOI 10.1146/annurev-marine-041921-090849.

[thumbnail of elementa.2020.00165.pdf] [thumbnail of supplem_final.pdf]

Zamanillo, M., Ortega-Retuerta, E., Cisternas-Novoa, C., Marrasé, C., Pelejero, C., Pascual, J., Gasol, J. M., Engel, A. and Simó, R. (2021) Uncoupled seasonal variability of transparent exopolymer and Coomassie stainable particles in coastal Mediterranean waters. Open Access Elementa: Science of the Anthropocene, 9 (1). Art.Nr. 00165. DOI 10.1525/elementa.2020.00165.

[thumbnail of fmars-08-718384.pdf] [thumbnail of Data_Sheet_1_Variability of the Sea Surface Microlayer Across a Filament s Edge and Potential Influences on Gas Exchange.pdf]

Barthelmess, T., Schütte, F. and Engel, A. (2021) Variability of the Sea Surface Microlayer Across a Filament’s Edge and Potential Influences on Gas Exchange. Open Access Frontiers in Marine Science, 8 . Art.Nr. 718384. DOI 10.3389/fmars.2021.718384.

[thumbnail of bg-18-5699-2021.pdf] [thumbnail of bg-18-5699-2021-supplement.pdf]

Van Wambeke, F., Taillandier, V., Desboeufs, K., Pulido-Villena, E. , Dinasquet, J. , Engel, A. , Marañón, E. , Ridame, C. and Guieu, C. (2021) Influence of atmospheric deposition on biogeochemical cycles in an oligotrophic ocean system. Open Access Biogeosciences (BG), 18 (20). pp. 5699-5717. DOI 10.5194/bg-18-5699-2021.

[thumbnail of ten-new-insights-in-climate-science-2021-a-horizon-scan.pdf] [thumbnail of S2059479821000259sup001.pdf]

Martin, M. A. , Sendra, O. A., Bastos, A., Bauer, N., Bertram, C., Blenckner, T., Bowen, K., Brando, P. M., Rudolph, T. B., Büchs, M., Bustamante, M., Chen, D. , Cleugh, H., Dasgupta, P., Denton, F., Donges, J. F., Donkor, F. K., Duan, H., Duarte, C. M., Ebi, K. L., Edwards, C. M. , Engel, A. , Fisher, E., Fuss, S. , Gaertner, J., Gettelman, A., Girardin, C. A. J., Golledge, N. R., Green, J. F., Grose, M. R., Hashizume, M., Hebden, S., Hepach, H., Hirota, M., Hsu, H. H., Kojima, S., Lele, S., Lorek, S., Lotze, H. K., Matthews, H. D., McCauley, D., Mebratu, D., Mengis, N. , Nolan, R. H. , Pihl, E. , Rahmstorf, S., Redman, A. , Reid, C. E., Rockström, J., Rogelj, J., Saunois, M., Sayer, L., Schlosser, P., Sioen, G. B., Spangenberg, J. H., Stammer, D., Sterner, T. N. S., Stevens, N., Thonicke, K., Tian, H., Winkelmann, R. and Woodcock, J. (2021) Ten new insights in climate science 2021 – a horizon scan. Open Access Global Sustainability, 4 (e25). DOI 10.1017/sus.2021.25.

[thumbnail of bg-18-5423-2021.pdf] [thumbnail of bg-18-5423-2021-supplement.pdf]

Gazeau, F., Van Wambeke, F., Marañón, E. , Pérez-Lorenzo, M., Alliouane, S., Stolpe, C., Blasco, T., Leblond, N., Zäncker, B., Engel, A. , Marie, B. , Dinasquet, J. and Guieu, C. (2021) Impact of dust addition on the metabolism of Mediterranean plankton communities and carbon export under present and future conditions of pH and temperature. Open Access Biogeosciences (BG), 18 (19). pp. 5423-5446. DOI 10.5194/bg-18-5423-2021.

[thumbnail of Pitcher et al 2021.pdf] [thumbnail of 84410.pdf]

Pitcher, G. C., Aguirre-Velarde, A., Breitburg, D., Cardich, J., Carstensen, J., Conley, D. J., Dewitte, B., Engel, A. , Espinoza-Morriberón, D., Flores, G., Garçon, V., Graco, M., Grégoire, M., Gutiérrez, D., Martin Hernandez-Ayon, J., May Huang, H. H., Isensee, K., Elena Jacinto, M., Levin, L., Lorenzo, A., Machu, E., Merma, L., Montes, I., SWA, N., Paulmier, A., Roman, M., Rose, K., Hood, R., Rabalais, N. N., Gro V. Salvanves, A., Salvatteci, R., Sánchez, S., Sifeddine, A., Wahab Tall, A., van der Plas, A. K., Yasuhara, M., Zhang, J. and Zhu, Z. (2021) System controls of coastal and open ocean oxygen depletion. Open Access Progress in Oceanography, 197 . Art.Nr. 102613. DOI 10.1016/j.pocean.2021.102613.

[thumbnail of fmars-08-723304.pdf] [thumbnail of Data_Sheet_1_Climate-Biogeochemistry Interactions in the Tropical Ocean Data Collection and Legacy.pdf]

Krahmann, G. , Arevalo-Martinez, D. L. , Dale, A. W. , Dengler, M. , Engel, A. , Glock, N., Grasse, P. , Hahn, J. , Hauss, H. , Hopwood, M. J. , Kiko, R. , Loginova, A. N. , Löscher, C. R. , Maßmig, M., Roy, A. S., Salvatteci, R., Sommer, S., Tanhua, T. and Mehrtens, H. (2021) Climate-Biogeochemistry Interactions in the Tropical Ocean: Data collection and legacy. Open Access Frontiers in Marine Science, 8 . Art.Nr. 723304. DOI 10.3389/fmars.2021.723304.

[thumbnail of acp-21-10625-2021.pdf]

Freney, E., Sellegri, K., Nicosia, A., Williams, L. R., Rinaldi, M., Trueblood, J. T., Prévôt, A. S. H., Thyssen, M., Grégori, G., Haëntjens, N., Dinasquet, J., Obernosterer, I., Van Wambeke, F., Engel, A. , Zäncker, B., Desboeufs, K., Asmi, E., Timonen, H. and Guieu, C. (2021) Mediterranean nascent sea spray organic aerosol and relationships with seawater biogeochemistry. Open Access Atmospheric Chemistry and Physics, 21 (13). pp. 10625-10641. DOI 10.5194/acp-21-10625-2021.

[thumbnail of fmars-08-684675.pdf]

Grosse, J. , Nöthig, E. M., Torres-Valdés, S. and Engel, A. (2021) Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait. Open Access Frontiers in Marine Science, 8 . Art.Nr. 684675. DOI 10.3389/fmars.2021.684675.

[thumbnail of Limnology Oceanography - 2021 - Fadeev - Submesoscale physicochemical dynamics directly shape bacterioplankton community.pdf]

Fadeev, E. , Wietz, M. , von Appen, W., Iversen, M. H., Nöthig, E., Engel, A. , Grosse, J. , Graeve, M. and Boetius, A. (2021) Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time. Open Access Limnology and Oceanography, 66 (7). pp. 2901-2913. DOI 10.1002/lno.11799.

[thumbnail of Zhu et al..pdf] [thumbnail of gbc21015-sup-0001-2020gb006538-si-2.pdf]

Zhu, K., Hopwood, M. J. , Groenenberg, J. E., Engel, A. , Achterberg, E. P. and Gledhill, M. (2021) Influence of pH and Dissolved Organic Matter on Iron Speciation and Apparent Iron Solubility in the Peruvian Shelf and Slope Region. Environmental Science & Technology, 55 (13). pp. 9372-9383. DOI 10.1021/acs.est.1c02477.

[thumbnail of 2020JG006048.pdf]

Maßmig, M. and Engel, A. (2021) Dissolved Organic Matter in the Upwelling System off Peru: Imprints of Bacterial Activity and Water Mass Characteristics. Open Access Journal of Geophysical Research: Biogeosciences, 126 (6). Art.Nr. e2020JG006048. DOI 10.1029/2020JG006048.

[thumbnail of bg-18-2301-2021.pdf] [thumbnail of bg-18-2301-2021-supplement.pdf]

Van Wambeke, F., Pulido, E. , Catala, P., Dinasquet, J. , Djaoudi, K., Engel, A. , Garel, M., Guasco, S., Marie, B. , Nunige, S., Taillandier, V. , Zäncker, B. and Tamburini, C. (2021) Spatial patterns of ectoenzymatic kinetics in relation to biogeochemical properties in the Mediterranean Sea and the concentration of the fluorogenic substrate used. Open Access Biogeosciences (BG), 18 (7). pp. 2301-2323. DOI 10.5194/bg-18-2301-2021.

Browning, T. J. , Al-Hashem, A. A., Hopwood, M. J. , Engel, A. , Belkin, I. M., Wakefield, E. D., Fischer, T. and Achterberg, E. P. (2021) Iron regulation of North Atlantic eddy phytoplankton productivity. Open Access Geophysical Research Letters, 48 (6). e2020GL091403. DOI 10.1029/2020GL091403.

[thumbnail of acp-21-4659-2021.pdf] [thumbnail of acp-21-4659-2021-supplement.pdf]

Trueblood, J. V., Nicosia, A., Engel, A. , Zäncker, B., Rinaldi, M. , Freney, E. , Thyssen, M., Obernosterer, I., Dinasquet, J., Belosi, F. , Tovar-Sánchez, A. , Rodriguez-Romero, A. , Santachiara, G., Guieu, C. and Sellegri, K. (2021) A two-component parameterization of marine ice-nucleating particles based on seawater biology and sea spray aerosol measurements in the Mediterranean Sea. Open Access Atmospheric Chemistry and Physics, 21 (6). pp. 4659-4676. DOI 10.5194/acp-21-4659-2021.

[thumbnail of bg-18-1749-2021.pdf] [thumbnail of bg-18-1749-2021-supplement.pdf]

Maranon, E., Van Wambeke, F., Uitz, J., Boss, E. S., Dimier, C., Dinasquet, J., Engel, A. , Haëntjens, N., Perez-Lorenzo, M., Taillandier, V. and Zäncker, B. (2021) Deep maxima of phytoplankton biomass, primary production and bacterial production in the Mediterranean Sea. Open Access Biogeosciences (BG), 18 (5). pp. 1749-1767. DOI 10.5194/bg-18-1749-2021.

[thumbnail of lno.11652_published.pdf]

Bart, M. C. , Mueller, B. , Rombouts, T., Ven, C., Tompkins, G. J., Osinga, R., Brussaard, C. P. D., MacDonald, B., Engel, A. , Rapp, H. T. and Goeij, J. M. (2021) Dissolved organic carbon (DOC) is essential to balance the metabolic demands of four dominant North‐Atlantic deep‐sea sponges. Open Access Limnology and Oceanography, 66 . pp. 925-938. DOI 10.1002/lno.11652.

Browning, T. J. , Achterberg, E. P. , Engel, A. and Mawji , E. (2021) Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean. Open Access Nature Communications, 12 . Art.Nr. 884. DOI 10.1038/s41467-021-21122-6.

[thumbnail of lno.11639.pdf]

Piontek, J., Galgani, L. , Nöthig, E., Peeken, I. and Engel, A. (2021) Organic matter composition and heterotrophic bacterial activity at declining summer sea ice in the central Arctic Ocean. Open Access Limnology and Oceanography, 66 (S1). S343-S362. DOI 10.1002/lno.11639.

[thumbnail of s41598-020-78097-5.pdf]

Sellegri, K., Nicosia, A., Freney, E., Uitz, J., Thyssen, M., Gregori, G., Engel, A. , Zäncker, B., Haëntjens, N., Mas, S., Picard, D., Saint-Macary, A., Peltola, M., Rose, C., Trueblood, J., Lefevre, D., D’Anna, B., Desboeufs, K., Meskhidze, N., Guieu, C. and Law, C. S. (2021) Surface ocean microbiota determine cloud precursors. Open Access Scientific Reports, 11 (1). Art.Nr. 281. DOI 10.1038/s41598-020-78097-5.

[thumbnail of acp-21-163-2021.pdf] [thumbnail of acp-21-163-2021-supplement.pdf]

Triesch, N., van Pinxteren, M., Engel, A. and Herrmann, H. (2021) Concerted measurements of free amino acids at the Cabo Verde islands: high enrichments in submicron sea spray aerosol particles and cloud droplets. Open Access Atmospheric Chemistry and Physics, 21 (1). pp. 163-181. DOI 10.5194/acp-21-163-2021.

[thumbnail of Grosse et al 2020.pdf] [thumbnail of 41598_2020_77645_MOESM1_ESM.pdf]

Grosse, J. , Endres, S. and Engel, A. (2020) Ocean acidification modifies biomolecule composition in organic matter through complex interactions. Open Access Scientific Reports, 10 (1). Art.Nr. 20599. DOI 10.1038/s41598-020-77645-3.

[thumbnail of bg-17-4663-2020.pdf] [thumbnail of bg-2019-489-supplement.pdf]

Loginova, A. N. , Dale, A. W. , Le Moigne, F. A. C. , Thomsen, S. , Sommer, S., Wallmann, K. and Engel, A. (2020) Sediment release of dissolved organic matter to the oxygen minimum zone off Peru. Open Access Biogeosciences (BG), 17 . pp. 4663-4679. DOI 10.5194/bg-17-4663-2020.

von Jackowski, A. , Grosse, J. , Nöthig, E. M. and Engel, A. (2020) Dynamics of organic matter and bacterial activity in the Fram Strait during summer and autumn. Open Access Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 378 (2181). Art.Nr. 20190366. DOI 10.1098/rsta.2019.0366.

[thumbnail of 1-s2.0-S2590332220302499-main.pdf] [thumbnail of Pressemitteilung]

Franke, A., Blenckner, T., Duarte, C. M., Ott, K., Fleming, L. E., Antia, A., Reusch, T. B. H. , Bertram, C., Hein, J., Kronfeld-Goharani, U., Dierking, J. , Kuhn, A., Sato, C., van Doorn, E., Wall, M., Schartau, M. , Karez, R., Crowder, L., Keller, D. P. , Engel, A. , Hentschel, U. and Prigge, E. (2020) Operationalizing Ocean Health: Toward Integrated Research on Ocean Health and Recovery to Achieve Ocean Sustainability. Open Access One Earth, 2 (6). pp. 557-565. DOI 10.1016/j.oneear.2020.05.013.

[thumbnail of fmars-07-00405.pdf]

Engel, A. , Endres, S. , Galgani, L. and Schartau, M. (2020) Marvelous Marine Microgels: On the Distribution and Impact of Gel-Like Particles in the Oceanic Water-Column. Open Access Frontiers in Marine Science, 7 . Art.Nr. 405. DOI 10.3389/fmars.2020.00405.

Browning, T. J. , Al-Hashem, A. A., Hopwood, M. J. , Engel, A. , Wakefield, E. D. and Achterberg, E. P. (2020) Nutrient regulation of late spring phytoplankton blooms in the midlatitude North Atlantic. Open Access Limnology and Oceanography, 65 (6). pp. 1136-1148. DOI 10.1002/lno.11376.

[thumbnail of Laurenceau-Cornec et al 2019.pdf] [thumbnail of lno.11388.pdf]

Laurenceau‐Cornec, E. C. , Le Moigne, F. A. C. , Gallinari, M., Moriceau, B., Toullec, J., Iversen, M. H., Engel, A. and De La Rocha, C. L. (2020) New guidelines for the application of Stokes' models to the sinking velocity of marine aggregates. Limnology and Oceanography, 65 (6). pp. 1264-1285. DOI 10.1002/lno.11388.

[thumbnail of fmars-07-00341.pdf]

Wagner, S., Schubotz, F., Kaiser, K., Hallmann, C., Waska, H., Rossel, P. E., Hansman, R., Elvert, M., Middelburg, J. J., Engel, A. , Blattmann, T. M., Catalá, T. S., Lennartz, S. T., Gomez-Saez, G. V., Pantoja-Gutiérrez, S., Bao, R. and Galy, V. (2020) Soothsaying DOM: A Current Perspective on the Future of Oceanic Dissolved Organic Carbon. Open Access Frontiers in Marine Science, 7 . ARt.Nr. 341. DOI 10.3389/fmars.2020.00341.

[thumbnail of bg-17-2349-2020.pdf] [thumbnail of bg-17-2349-2020-supplement.pdf]

Tovar-Sánchez, A., Rodríguez-Romero, A., Engel, A. , Zäncker, B., Fu, F., Marañón, E., Pérez-Lorenzo, M., Bressac, M., Wagener, T., Triquet, S., Siour, G., Desboeufs, K. and Guieu, C. (2020) Characterizing the surface microlayer in the Mediterranean Sea: trace metal concentrations and microbial plankton abundance. Open Access Biogeosciences (BG), 17 (8). pp. 2349-2364. DOI 10.5194/bg-17-2349-2020.

[thumbnail of bams-d-17-0329.1.pdf]

Stolle, C., Ribas-Ribas, M., Badewien, T. H., Barnes, J., Carpenter, L. J., Chance, R., Damgaard, L. R., Durán Quesada, A. M., Engel, A. , Frka, S., Galgani, L., Gašparović, B., Gerriets, M., Mustaffa, N. I. H., Herrmann, H., Kallajoki, L., Pereira, R., Radach, F., Revsbech, N. P., Rickard, P., Saint, A., Salter, M., Striebel, M., Triesch, N., Uher, G., Upstill-Goddard, R. C., van Pinxteren, M., Zäncker, B., Zieger, P. and Wurl, O. (2020) The MILAN campaign: Studying diel light effects on the air-sea interface. Open Access Bulletin of the American Meteorological Society, 101 (2). pp. 146-166. DOI 10.1175/BAMS-D-17-0329.1.

[thumbnail of bg-17-215-2020.pdf] [thumbnail of bg-17-215-2020-supplement.pdf]

Maßmig, M., Lüdke, J. , Krahmann, G. and Engel, A. (2020) Bacterial degradation activity in the eastern tropical South Pacific oxygen minimum zone. Open Access Biogeosciences (BG), 17 . pp. 215-230. DOI 10.5194/bg-17-215-2020.

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Zäncker, B., Engel, A. and Cunliffe, M. (2019) Bacterial communities associated with individual transparent exopolymer particles (TEP). Journal of Plankton Research, 41 (4). pp. 561-565. DOI 10.1093/plankt/fbz022.

[thumbnail of fmars-06-00581.pdf] [thumbnail of Data_Sheet_1_Relevance of Nutrient-Limited Phytoplankton Production and Its Bacterial Remineralization for Carbon and Oxygen Fluxes in the Baltic Sea.pdf]

Piontek, J., Endres, S. , Le Moigne, F. A. C. , Schartau, M. and Engel, A. (2019) Relevance of Nutrient-Limited Phytoplankton Production and Its Bacterial Remineralization for Carbon and Oxygen Fluxes in the Baltic Sea. Open Access Frontiers in Marine Science, 6 . Art.Nr. 581. DOI 10.3389/fmars.2019.00581.

[thumbnail of a083p095.pdf]

Maßmig, M., Piontek, J., Le Moigne, F. A. C. , Cisternas-Novoa, C. and Engel, A. (2019) Potential role of oxygen and inorganic nutrients on microbial carbon turnover in the Baltic Sea. Open Access Aquatic Microbial Ecology, 83 . pp. 95-108. DOI 10.3354/ame01902.

[thumbnail of bg-16-2033-2019.pdf]

Loginova, A. N. , Thomsen, S. , Dengler, M. , Lüdke, J. and Engel, A. (2019) Diapycnal dissolved organic matter supply into the upper Peruvian oxycline. Open Access Biogeosciences (BG), 16 (9). pp. 2033-2047. DOI 10.5194/bg-16-2033-2019.

[thumbnail of fmars-06-00187.pdf] [thumbnail of Data Sheet]

Engel, A. , Bracher, A., Dinter, T., Endres, S. , Grosse, J. , Metfies, K., Peeken, I., Piontek, J., Salter, I. and Nöthig, E. M. (2019) Inter-Annual Variability of Organic Carbon Concentration in the Eastern Fram Strait During Summer (2009–2017). Open Access Frontiers in Marine Science, 6 . Art.Nr. 187. DOI 10.3389/fmars.2019.00187.

[thumbnail of bg-16-979-2019.pdf]

Thomsen, S. , Karstensen, J. , Kiko, R. , Krahmann, G. , Dengler, M. and Engel, A. (2019) Remote and local drivers of oxygen and nitrate variability in the shallow oxygen minimum zone off Mauritania in June 2014. Open Access Biogeosciences (BG), 16 (5). pp. 979-998. DOI 10.5194/bg-16-979-2019.

[thumbnail of fmars-05-00500.pdf]

Cisternas-Novoa, C., Lee, C., Tang, T., de Jesus, R. and Engel, A. (2019) Effects of Higher CO2 and Temperature on Exopolymer Particle Content and Physical Properties of Marine Aggregates. Open Access Frontiers in Marine Science, 5 . Art.Nr. 500. DOI 10.3389/fmars.2018.00500.

[thumbnail of fmars-05-00429.pdf] [thumbnail of Data_Sheet_1_Microbial Communities in the East and West Fram Strait During Sea Ice Melting Season.pdf]

Fadeev, E., Salter, I., Schourup-Kristensen, V., Nöthig, E. M., Metfies, K., Engel, A. , Piontek, J., Boetius, A. and Bienhold, C. (2018) Microbial Communities in the East and West Fram Strait During Sea Ice Melting Season. Open Access Frontiers in Marine Science, 5 . Art.Nr. 429. DOI 10.3389/fmars.2018.00429.

Zäncker, B., Cunliffe, M. and Engel, A. (2018) Bacterial Community Composition in the Sea Surface Microlayer Off the Peruvian Coast. Open Access Frontiers in Microbiology, 9 . Art.Nr. 2699. DOI 10.3389/fmicb.2018.02699.

[thumbnail of s41598-018-32805-4.pdf]

Galgani, L., Engel, A. , Rossi, C., Donati, A. and Loiselle, S. A. (2018) Polystyrene microplastics increase microbial release of marine Chromophoric Dissolved Organic Matter in microcosm experiments. Open Access Scientific Reports, 8 (1). Art.Nr. 14635. DOI 10.1038/s41598-018-32805-4.

[thumbnail of 20181203.full.pdf]

Michels, J., Stippkugel, A., Lenz, M., Wirtz, K. and Engel, A. (2018) Rapid aggregation of biofilm-covered microplastics with marine biogenic particles. Open Access Proceedings of the Royal Society B: Biological Sciences, 285 (1885). p. 20181203. DOI 10.1098/rspb.2018.1203.

[thumbnail of fmars-05-00182.pdf]

Engel, A. , Sperling, M., Sun, C., Grosse, J. and Friedrichs, G. (2018) Organic Matter in the Surface Microlayer: Insights From a Wind Wave Channel Experiment. Open Access Frontiers in Marine Science, 5 . Art.Nr. 182. DOI 10.3389/fmars.2018.00182.

Browning, T. J. , Achterberg, E. P. , Rapp, I., Engel, A. , Bertrand, E. M., Tagliabue, A. and Moore, C. M. (2017) Nutrient co-limitation at the boundary of an oceanic gyre. Nature, 551 (7679). pp. 242-246. DOI 10.1038/nature24063.

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Dreshchinskii, A. and Engel, A. (2017) Seasonal variations of the sea surface microlayer at the Boknis Eck Times Series Station (Baltic Sea). Open Access Journal of Plankton Research, 39 (6). pp. 943-961. DOI 10.1093/plankt/fbx055.

[thumbnail of Engel_et_al-2017-Scientific_Reports.pdf]

Engel, A. , Piontek, J., Metfies, K., Endres, S. , Sprong, P., Peeken, I., Gäbler-Schwarz, S. and Nöthig, E. M. (2017) Inter-annual variability of transparent exopolymer particles in the Arctic Ocean reveals high sensitivity to ecosystem changes. Open Access Scientific Reports, 7 (1). Art.Nr. 4129. DOI 10.1038/s41598-017-04106-9.

[thumbnail of fmars-04-00166.pdf] [thumbnail of table 1.pdf]

Busch, K., Endres, S. , Iversen, M. H., Michels, J., Nöthig, E. M. and Engel, A. (2017) Bacterial Colonization and Vertical Distribution of Marine Gel Particles (TEP and CSP) in the Arctic Fram Strait. Open Access Frontiers in Marine Science, 4 (Art.No. 166). DOI 10.3389/fmars.2017.00166.

[thumbnail of Engel et al 2017_ Frontiers.pdf]

Engel, A. , Bange, H. W. , Cunliffe, M., Burrows, S. M., Friedrichs, G., Galgani, L., Herrmann, H., Hertkorn, N., Johnson, M., Liss, P. S., Quinn, P. K., Schartau, M. , Soloviev, A., Stolle, C., Upstill-Goddard, R. C., van Pinxteren, M. and Zäncker, B. (2017) The Ocean's Vital Skin: Toward an Integrated Understanding of the Sea Surface Microlayer. Open Access Frontiers in Marine Science, 4 . Art.Nr. 165. DOI 10.3389/fmars.2017.00165.

[thumbnail of ncomms15465.pdf] [thumbnail of ncomms15465-s1.pdf]

Browning, T. , Achterberg, E. P. , Yong, J. C., Rapp, I., Utermann, C., Engel, A. and Moore, C. M. (2017) Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic. Open Access Nature Communications, 8 (15465). DOI 10.1038/ncomms15465.

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Engel, A. , Wagner, H., Le Moigne, F. A. C. and Wilson, S. T. (2017) Particle export fluxes to the oxygen minimum zone of the Eastern Tropical North Atlantic. Open Access Biogeosciences (BG), 14 (7). pp. 1825-1838. DOI 10.5194/bg-14-1825-2017.

[thumbnail of fmars-04-00064.pdf] [thumbnail of presentation 1.pdf]

Schulz, K. G., Bach, L. T. , Bellerby, R. G. J., Bermudez, R., Büdenbender, J., Boxhammer, T. , Czerny, J., Engel, A. , Ludwig, A., Meyerhöfer, M., Larsen, A., Paul, A. J., Sswat, M. and Riebesell, U. (2017) Phytoplankton Blooms at Increasing Levels of Atmospheric Carbon Dioxide: Experimental Evidence for Negative Effects on Prymnesiophytes and Positive on Small Picoeukaryotes. Open Access Frontiers in Marine Science, 4 . Art.Nr. 64. DOI 10.3389/fmars.2017.00064.

[thumbnail of fmicb-08-00065.pdf]

Sperling, M., Piontek, J., Engel, A. , Wiltshire, K. H., Niggemann, J., Gerdts, G. and Wichels, A. (2017) Combined Carbohydrates Support Rich Communities of Particle-Associated Marine Bacterioplankton. Open Access Frontiers in Microbiology, 8 . Art.Nr. 65. DOI 10.3389/fmicb.2017.00065.

[thumbnail of s41598-017-16903-3.pdf]

Le Moigne, F. A. C. , Cisternas-Novoa, C., Piontek, J., Massmig, M. and Engel, A. (2017) On the effect of low oxygen concentrations on bacterial degradation of sinking particles. Open Access Scientific Reports, 7 (1). Art. No. 16722. DOI 10.1038/s41598-017-16903-3.

[thumbnail of emi13549-1.pdf] [thumbnail of emi13549-sup-0001-suppinfo1.docx]

Bergen, B., Endres, S. , Engel, A. , Zark, M., Dittmar, T., Sommer, U. and Jürgens, K. (2016) Acidification and warming affect prominent bacteria in two seasonal phytoplankton bloom mesocosms. Environmental Microbiology, 18 (12). pp. 4579-4595. DOI 10.1111/1462-2920.13549.

[thumbnail of Loginova_et_al-2016-Journal_of_Geophysical_Research__Oceans.pdf]

Loginova, A. N. , Thomsen, S. and Engel, A. (2016) Chromophoric and fluorescent dissolved organic matter in and above the oxygen minimum zone off Peru. Open Access Journal of Geophysical Research: Oceans, 121 (11). pp. 7973-7990. DOI 10.1002/2016JC011906.

[thumbnail of acp-16-12219-2016.pdf]

Hepach, H. , Quack, B., Tegtmeier, S., Engel, A. , Bracher, A., Fuhlbrügge, S., Galgani, L., Atlas, E., Lampel, J., Frieß, U. and Krüger, K. (2016) Biogenic halocarbons from the Peruvian upwelling region as tropospheric halogen source. Open Access Atmospheric Chemistry and Physics, 16 . pp. 12219-12237. DOI 10.5194/acp-16-12219-2016.

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Thomsen, S. , Kanzow, T., Colas, F., Echevin, V., Krahmann, G. and Engel, A. (2016) Do submesoscale frontal processes ventilate the oxygen minimum zone off Peru?. Open Access Geophysical Research Letters, 43 (15). S367-S386. DOI 10.1002/2016GL070548.

[thumbnail of srep29465.pdf] [thumbnail of srep29465-s1.pdf]

Galgani, L., Piontek, J. and Engel, A. (2016) Biopolymers form a gelatinous microlayer at the air-sea interface when Arctic sea ice melts. Open Access Scientific Reports, 6 (Article nr. 29465). DOI 10.1038/srep29465.

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Löscher, C., Bange, H. W. , Schmitz, R. A., Callbeck, C. M., Engel, A. , Hauss, H. , Kanzow, T., Kiko, R. , Lavik, G., Loginova, A. N. , Melzner, F., Meyer, J., Neulinger, S. C., Pahlow, M., Riebesell, U. , Schunck, H., Thomsen, S. and Wagner, H. (2016) Water column biogeochemistry of oxygen minimum zones in the eastern tropical North Atlantic and eastern tropical South Pacific Oceans. Open Access Biogeosciences (BG), 13 . pp. 3585-3606. DOI 10.5194/bg-13-3585-2016.

[thumbnail of 23349-180727-1-PB.pdf]

Nöthig, E. M., Bracher, A., Engel, A. , Metfies, K., Niehoff, B., Peeken, I., Bauerfeind, E., Cherkasheva, A., Gäbler-Schwarz, S., Hardge, K., Kilias, E., Kraft, A., Mebrahtom Kidane, Y., Lalande, C., Piontek, J., Thomisch, K. and Wurst, M. (2015) Summertime plankton ecology in Fram Strait - a compilation of long- and short-term observations. Open Access Polar Research, 34 (23349). DOI 10.3402/polar.v34.23349.

[thumbnail of bg-12-6897-2015.pdf] [thumbnail of bg-12-6897-2015-supplement.pdf]

Loginova, A. N. , Borchard, C., Meyer, J., Hauss, H. , Kiko, R. and Engel, A. (2015) Effects of nitrate and phosphate supply on chromophoric and fluorescent dissolved organic matter in the Eastern Tropical North Atlantic: a mesocosm study. Open Access Biogeosciences (BG), 12 . pp. 6897-6914. DOI 10.5194/bg-12-6897-2015.

[thumbnail of bg-12-5647-2015.pdf]

Engel, A. , Borchard, C., Loginova, A. N. , Meyer, J., Hauss, H. and Kiko, R. (2015) Effects of varied nitrate and phosphate supply on polysaccharidic and proteinaceous gel particles production during tropical phytoplankton bloom experiments. Open Access Biogeosciences (BG), 12 . pp. 5647-5665. DOI 10.5194/bg-12-5647-2015.

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Piontek, J., Sperling, M., Nöthig, E. M. and Engel, A. (2015) Multiple environmental changes induce interactive effects on bacterial degradation activity in the Arctic Ocean. Open Access Limnology and Oceanography, 60 (4). pp. 1392-1410. DOI 10.1002/lno.10112.

[thumbnail of 1-s2.0-S0278434314002313-main.pdf]

Kreus, M., Schartau, M. , Engel, A. , Nausch, M. and Voss, M. (2015) Variations in the elemental ratio of organic matter in the central Baltic Sea: Part I—Linking primary production to remineralization. Continental Shelf Research, 100 . pp. 25-45. DOI 10.1016/j.csr.2014.06.015.

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Biermann, A., Lewandowska, A. M., Engel, A. and Riebesell, U. (2015) Organic matter partitioning and stoichiometry in response to rising water temperature and copepod grazing. Open Access Marine Ecology Progress Series, 522 . pp. 49-65. DOI 10.3354/meps11148.

[thumbnail of 10.1002_2014JC010188.pdf]

Galgani, L., Stolle, C., Endres, S. , Schulz, K. G. and Engel, A. (2014) Effects of ocean acidification on the biogenic composition of the sea-surface microlayer: Results from a mesocosm study. Open Access Journal of Geophysical Research: Oceans, 119 (11). pp. 7911-7924. DOI 10.1002/2014JC010188.

[thumbnail of Cisternas-Novoa et al. 2014.pdf] [thumbnail of Erratum]

Cisternas-Novoa, C., Lee, C. and Engel, A. (2014) A semi-quantitative spectrophotometric, dye-binding assay for determination of Coomassie Blue stainable particles. Limnology and Oceanography: Methods, 12 . pp. 604-616. DOI 10.4319/lom.2014.12.604.

[thumbnail of m507p015.pdf]

Engel, A. , Cisternas Novoa, C., Wurst, M., Endres, S. , Tang, T., Schartau, M. and Lee, C. (2014) No detectable effect of CO2 on elemental stoichiometry of Emiliania huxleyi in nutrient-limited, acclimated continuous cultures. Open Access Marine Ecology Progress Series, 507 . pp. 15-30. DOI 10.3354/meps10824.

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Pavlov, A. K., Silyakova, A., Granskog, M. A., Bellerby, R. G. J., Engel, A. , Schulz, K. G. and Brussaard, C. P. D. (2014) Marine CDOM accumulation during a coastal Arctic mesocosm experiment: No response to elevated pCO2levels. Open Access Journal of Geophysical Research: Biogeosciences, 119 (6). pp. 1216-1230. DOI 10.1002/2013JG002587.

Endres, S. , Galgani, L., Riebesell, U. , Schulz, K. G. and Engel, A. (2014) Stimulated Bacterial Growth under Elevated p Co2: Results from an Off-Shore Mesocosm Study. Open Access PLoS ONE, 9 (6). e99228. DOI 10.1371/journal.pone.0099228.

[thumbnail of J. Plankton Res.-2014-Engel-641-57.pdf]

Engel, A. , Piontek, J., Grossart, H. P., Riebesell, U. , Schulz, K. G. and Sperling, M. (2014) Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms. Journal of Plankton Research, 36 (3). pp. 641-657. DOI 10.1093/plankt/fbt125.

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Krause, S., Aloisi, G., Engel, A. , Liebetrau, V. and Treude, T. (2014) Enhanced calcite dissolution in the presence of the Aerobic Methanotroph Methylosinus trichosporium. Geomicrobiology Journal, 31 (4). pp. 325-337. DOI 10.1080/01490451.2013.834007.

[thumbnail of Piontek_2014.pdf]

Piontek, J., Sperling, M., Nöthig, E. M. and Engel, A. (2014) Regulation of bacterioplankton activity in Fram Strait (Arctic Ocean) during early summer: The role of organic matter supply and temperature. Journal of Marine Systems, 132 . pp. 83-94. DOI 10.1016/j.jmarsys.2014.01.003.

[thumbnail of J. Plankton Res.-2014-Biermann-658-71.pdf]

Biermann, A., Engel, A. and Riebesell, U. (2014) Changes in organic matter cycling in a plankton community exposed to warming under different light intensities. Journal of Plankton Research, 36 (3). pp. 658-671. DOI 10.1093/plankt/fbu005.

[thumbnail of bg-10-1893-2013.pdf]

Archer, S. D., Kimmance, S. A., Stephens, J. A., Hopkins, F. E., Bellerby, R. G. J., Schulz, K. G., Piontek, J. and Engel, A. (2013) Contrasting responses of DMS and DMSP to ocean acidification in Arctic waters. Open Access Biogeosciences (BG), 10 . pp. 1893-1908. DOI 10.5194/bg-10-1893-2013.

[thumbnail of Assmy et al 2013 PLOS ONE.pdf]

Assmy, P., Ehn, J. K., Fernández-Méndez, M., Hop, H., Katlein, C., Sundfjord, A., Bluhm, K., Daase, M., Engel, A. , Fransson, A., Granskog, M. A., Hudson, S. R., Kristiansen, S., Nicolaus, M., Peeken, I., Renner, A. H. H., Spreen, G., Tatarek, A. and Wiktor, J. (2013) Floating Ice-Algal Aggregates below Melting Arctic Sea Ice. Open Access PLoS ONE, 8 (10). e76599. DOI 10.1371/journal.pone.0076599.

[thumbnail of 1-s2.0-S0079661112000924-main.pdf]

Cunliffe, M., Engel, A. , Frka, S., Gašparović, B., Guitart, C., Murrell, J. C., Salter, M., Stolle, C., Upstill-Goddard, R. and Wurl, O. (2013) Sea surface microlayers: A unified physicochemical and biological perspective of the air–ocean interface. Progress in Oceanography, 109 . pp. 104-116. DOI 10.1016/j.pocean.2012.08.004.

[thumbnail of bg-10-3109-2013.pdf]

Czerny, J., Schulz, K. G., Boxhammer, T. , Bellerby, R. G. J., Büdenbender, J., Engel, A. , Krug, S., Ludwig, A., Nachtigall, K., Nondal, G., Niehoff, B., Silyakova, A. and Riebesell, U. (2013) Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach. Open Access Biogeosciences (BG), 10 (5). pp. 3109-3125. DOI 10.5194/bg-10-3109-2013.

Endres, S. , Unger, J., Wannicke, N., Nausch, M., Voss, M. and Engel, A. (2013) Response of Nodularia spumigena to pCO2 – Part 2: Exudation and extracellular enzyme activities. Open Access Biogeosciences (BG), 10 . pp. 567-582. DOI 10.5194/bg-10-567-2013.

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Engel, A. , Borchard, C., Piontek, J., Schulz, K. G., Riebesell, U. and Bellerby, R. (2013) CO2 increases 14C-primary production in an Arctic plankton community. Open Access Biogeosciences (BG), 10 (3). pp. 1291-1308. DOI 10.5194/bg-10-1291-2013.

[thumbnail of bg-10-297-2013.pdf]

Piontek, J., Borchard, C., Sperling, M., Schulz, K. G., Riebesell, U. and Engel, A. (2013) Response of bacterioplankton activity in an Arctic fjord system to elevated pCO2: results from a mesocosm perturbation study. Open Access Biogeosciences (BG), 10 . pp. 297-314. DOI 10.5194/bg-10-297-2013.

[thumbnail of bg-10-161-2013.pdf]

Schulz, K. G., Bellerby, R. G. J., Brussaard, C. P. D., Büdenbender, J., Czerny, J., Engel, A. , Fischer, M., Koch-Klavsen, S., Krug, S., Lischka, S. , Ludwig, A., Meyerhöfer, M., Nondal, G., Silyakova, A., Stuhr, A. and Riebesell, U. (2013) Temporal biomass dynamics of an Arctic plankton bloom in response to increasing levels of atmospheric carbon dioxide. Open Access Biogeosciences (BG), 10 . pp. 161-180. DOI 10.5194/bg-10-161-2013.

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Silyakova, A., Bellerby, R. G. J., Schulz, K. G., Czerny, J., Tanaka, T., Nondal, G., Riebesell, U. , Engel, A. , De Lange, T. and Ludwig, A. (2013) Pelagic community production and carbon-nutrient stoichiometry under variable ocean acidification in an Arctic fjord. Open Access Biogeosciences (BG), 10 . pp. 4847-4859. DOI 10.5194/bg-10-4847-2013.

[thumbnail of bg-10-181-2013.pdf]

Sperling, M., Piontek, J., Gerdts, G., Wichels, A., Schunck, H., Roy, A. S., LaRoche, J., Gilbert, J., Bittner, L., Romac, S., Riebesell, U. and Engel, A. (2013) Effect of elevated CO2 on the dynamics of particle attached and free living bacterioplankton communities in an Arctic fjord. Open Access Biogeosciences (BG), 10 . pp. 181-191. DOI 10.5194/bg-10-181-2013.

[thumbnail of bg-10-1483-2013.pdf] [thumbnail of bg-10-1483-2013-supplement.pdf]

Unger, J., Endres, S. , Wannicke, N., Engel, A. , Voss, M., Nausch, G. and Nausch, M. (2013) Response of Nodularia spumigena to pCO2 - Part 3: Turnover of phosphorus compounds. Open Access Biogeosciences (BG), 10 . pp. 1483-1499. DOI 10.5194/bg-10-1483-2013.

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Borchard, C. and Engel, A. (2012) Organic matter exudation by Emiliania huxleyi under simulated future ocean conditions. Open Access Biogeosciences (BG), 9 (8). pp. 3405-3423. DOI 10.5194/bg-9-3405-2012.

[thumbnail of Wannicke et al 2012 bg-9-2973-2012.pdf]

Wannicke, N., Endres, S. , Engel, A. , Grossart, H. P., Nausch, M., Unger, J. and Voss, M. (2012) Response of Nodularia spumigena to pCO2 – Part 1: Growth, production and nitrogen cycling. Open Access Biogeosciences (BG), 9 (8). pp. 2973-2988. DOI 10.5194/bg-9-2973-2012.

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Wohlers-Zöllner, J., Biermann, A., Engel, A. , Dörge, P., Lewandowska, A. M., Scheibner, M. and Riebesell, U. (2012) Effects of rising temperature on pelagic biogeochemistry in mesocosm systems: a comparative analysis of the AQUASHIFT Kiel experiments. Marine Biology, 159 . pp. 2503-2518. DOI 10.1007/s00227-012-1958-x.

[thumbnail of Borchard_et_al_JEMBE.pdf]

Borchard, C., Borges, A., Händel, N. and Engel, A. (2011) Biogeochemical response of Emiliania huxleyi (PML B92/11) to elevated CO2 and temperature under phosphorous limitation: a chemostat study. Journal of Experimental Marine Biology and Ecology, 410 . pp. 61-71. DOI 10.1016/j.jembe.2011.10.004.

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Engel, A. , Händel, N., Wohlers, J., Lunau, M., Grossart, H. P., Sommer, U. and Riebesell, U. (2011) Effects of sea surface warming on the production and composition of dissolved organic matter during phytoplankton blooms: results from a mesocosm study. Journal of Plankton Research, 33 (3). pp. 357-372. DOI 10.1093/plankt/fbq122.

[thumbnail of 1-s2.0-S0967063710002335-main.pdf]

Harlay, J., Chou, L., De Bodt, C., Van Oostende, N., Piontek, J., Suykens, K., Engel, A. , Sabbe, K., Groom, S., Delille, B. and Borges, A. V. (2011) Biogeochemistry and carbon mass balance of a coccolithophore bloom in the northern Bay of Biscay (June 2006). Deep Sea Research Part I: Oceanographic Research Papers, 58 (2). pp. 111-127. DOI 10.1016/j.dsr.2010.11.005.

[thumbnail of 2011GL047346.pdf]

Kim, J. M., Lee, K., Shin, K., Yang, E. J., Engel, A. , Karl, D. M. and Kim, H. C. (2011) Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions. Open Access Geophysical Research Letters, 38 (8). DOI 10.1029/2011GL047346.

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Piontek, J., Handel, N., de Bodt, C., Harlay, J., Chou, L. and Engel, A. (2011) The utilization of polysaccharides by heterotrophic bacterioplankton in the Bay of Biscay (North Atlantic Ocean). Open Access Journal of Plankton Research, 33 (11). pp. 1719-1735. DOI 10.1093/plankt/fbr069.

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Levin, I., Naegler, T., Heinz, R., Osusko, D., Cuevas, E., Engel, A. , Ilmberger, J., Langenfelds, R. L., Neininger, B., Rohden, C. v., Steele, L. P., Weller, R., Worthy, D. E. and Zimov, S. A. (2010) The global SF6 source inferred from long-term high precision atmospheric measurements and its comparison with emission inventories. Open Access Atmospheric Chemistry and Physics, 10 (6). pp. 2655-2662. DOI 10.5194/acp-10-2655-2010.

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Piontek, J., Lunau, M., Händel, N., Borchard, C., Wurst, M. and Engel, A. (2010) Acidification increases microbial polysaccharide degradation in the ocean. Open Access Biogeosciences (BG), 7 (5). pp. 1615-1624. DOI 10.5194/bg-7-1615-2010.

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Egge, J., Thingstad, T., Larsen, A., Engel, A. , Wohlers, J., Bellerby, R. G. J. and Riebesell, U. (2009) Primary production during nutrient-induced blooms at elevated CO2 concentrations. Open Access Biogeosciences (BG), 6 . pp. 877-885.

[thumbnail of Engel.pdf]

Engel, A. , Abramson, L., Szlosek, J., Liu, Z., Stewart, G., Hirschberg, D. and Lee, C. (2009) Investigating the effect of ballasting by CaCO3 in Emiliania huxleyi, II: Decomposition of particulate organic matter. Deep-Sea Research Part II-Topical Studies in Oceanography, 56 (18). pp. 1408-1419. DOI 10.1016/j.dsr2.2008.11.028.

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Engel, A. , Szlosek, J., Abramson, L., Liu, Z. and Lee, C. (2009) Investigating the effect of ballasting by CaCO3 in Emiliania huxleyi: I. Formation, settling velocities and physical properties of aggregates. Deep-Sea Research Part II-Topical Studies in Oceanography, 56 (18). pp. 1396-1407. DOI 10.1016/j.dsr2.2008.11.027.

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Harlay, J., De Bodt, C., Engel, A. , Jansen, S., d’Hoop, Q., Piontek, J., Van Oostende, N., Groom, S., Sabbe, K. and Chou, L. (2009) Abundance and size distribution of transparent exopolymer particles (TEP) in a coccolithophorid bloom in the northern Bay of Biscay. Deep-Sea Research Part I-Oceanographic Research Papers, 56 (8). pp. 1251-1265. DOI 10.1016/j.dsr.2009.01.014.

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Lee, C., Armstrong, R. A., Cochran, J. K., Engel, A. , Fowler, S. W., Goutx, M., Masqué, P., Miquel, J. C., Peterson, M. and Tamburini, C. (2009) MedFlux: Investigations of particle flux in the Twilight Zone. Deep-Sea Research Part II-Topical Studies in Oceanography, 56 (18). pp. 1363-1368. DOI 10.1016/j.dsr2.2008.12.003.

[thumbnail of acp-9-413-2009.pdf]

Payan, S., Camy-Peyret, C., Oelhaf, H., Wetzel, G., Maucher, G., Keim, C., Pirre, M., Huret, N., Engel, A. , Volk, M. C., Kuellmann, H., Kuttippurath, J., Cortesi, U., Bianchini, G., Mencaraglia, F., Raspollini, P., Redaelli, G., Vigouroux, C., De Mazière, M., Mikuteit, S., Blumenstock, T., Velazco, V., Notholt, J., Mahieu, E., Duchatelet, P., Smale, D., Wood, S., Jones, N., Piccolo, C., Payne, V., Bracher, A., Glatthor, N., Stiller, G., Grunow, K., Jeseck, P., Te, Y. and Butz, A. (2009) Validation of version-4.61 methane and nitrous oxide observed by MIPAS. Open Access Atmospheric Chemistry and Physics, 9 (2). pp. 413-442. DOI 10.5194/acp-9-413-2009.

[thumbnail of 789_Piontek_2009_EffectsOfRisingTemperatureOn_Artzeit_pubid12361.pdf]

Piontek, J., Händel, N., Langer, G., Wohlers, J., Riebesell, U. and Engel, A. (2009) Effects of rising temperature on the formation and microbial degradation of marine diatom aggregates. Aquatic Microbial Ecology, 54 . pp. 305-318. DOI 10.3354/ame01273.

[thumbnail of 606_Wohlers_2009_ChangesInBiogenicCarbonFlow_Artzeit_pubid11910.pdf] [thumbnail of 0812743106SI.pdf]

Wohlers, J., Engel, A. , Zöllner, E., Breithaupt, P., Jürgens, K., Hoppe, H. G., Sommer, U. and Riebesell, U. (2009) Changes in biogenic carbon flow in response to sea surface warming. PNAS Proceedings of the National Academy of Sciences of the United States of America, 106 (17). pp. 7067-7072. DOI 10.1073/pnas.0812743106.

[thumbnail of 79_Engel_2008_EffectsOfCo_2_OnParticle_Artzeit_pubid9129.pdf]

Engel, A. , Schulz, K. G., Riebesell, U. , Bellerby, R. G. J., Delille, B. and Schartau, M. (2008) Effects of CO2 on particle size distribution and phytoplankton abundance during a mesocosm bloom experiment (PeECE II). Open Access Biogeosciences (BG), 5 (2). pp. 509-521. DOI 10.5194/bg-5-509-2008.

[thumbnail of 434_Riebesell_2008_CommentOnPhytoplanktonCalcificationIn_Artzeit_pubid10951.pdf] [thumbnail of Riebesell.pdf]

Riebesell, U. , Bellerby, R., Engel, A. , Fabry, V. J., Hutchins, D. A., Reusch, T. B. H. , Schulz, K. G. and Morel, F. M. M. (2008) Comment on "Phytoplankton Calcification in a High-CO2 World". Science, 322 (1466b). DOI 10.1126/science.1161096.

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Benthien, A., Zondervan, I., Engel, A. , Hefter, J., Terbrüggen, A. and Riebesell, U. (2007) Carbon isotopic fractionation during a mesocosm bloom experiment dominated by Emiliania huxleyi: Effects of CO2 concentration and primary production. Geochimica et Cosmochimica Acta, 71 . pp. 1528-1541. DOI 10.1016/j.gca.2006.12.015.

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Grossart, H., Engel, A. , Arnosti, C., De La Rocha, C. L., Murray, A. E. and Passow, U. (2007) Microbial dynamics in autotrophic and heterotrophic seawater mesocosms. III. Organic matter fluxes. Aquatic Microbial Ecology, 49 . pp. 143-156. DOI 10.3354/ame01140.

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Passow, U., De La Rocha, C. L., Arnosti, C., Grossart, H., Murray, A. E. and Engel, A. (2007) Microbial dynamics in autotrophic and heterotrophic seawater mesocosms. I. Effect of phytoplankton on the microbial loop. Aquatic Microbial Ecology, 49 . pp. 109-121. DOI 10.3354/ame01138.

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Schartau, M. , Engel, A. , Schröter, J., Thoms, S., Völker, C. and Wolf-Gladrow, D. (2007) Modelling carbon overconsumption and the formation of extracellular particulate organic carbon. Open Access Biogeosciences (BG), 4 (4). pp. 433-454. DOI 10.5194/bg-4-433-2007.

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Sommer, U., Aberle, N., Engel, A. , Hansen, T., Lengfellner, K., Sandow, M., Wohlers, J., Zöllner, E. and Riebesell, U. (2007) An indoor mesocosm system to study the effect of climate change on the late winter and spring succession of Baltic Sea phyto- and zooplankton. Oecologia, 150 (4). pp. 655-667. DOI 10.1007/s00442-006-0539-4.

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Engel, A. , Zondervan, I., Aerts, K., Beaufort, L., Benthien, A., Chou, L., Delille, B., Gattuso, J. P., Harley, J., Heemann, C., Hoffmann, L., Jacquet, S., Nejstgaard, J., Pizay, M. D., Rochelle-Newall, E., Schneider, U., Terbrüggen, A. and Riebesell, U. (2005) Testing the direct effect of CO2 concentration on a bloom of the coccolithophorid Emiliania huxleyi in mesocosm experiments. Limnology and Oceanography, 50 . pp. 493-504. DOI 10.4319/lo.2005.50.2.0493.

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Engel, A. , Delille, B., Jacquet, S., Riebesell, U. , Rochelle-Newall, E., Terbrüggen, A. and Zondervan, I. (2004) Transparent exopolymer particles and dissolved organic carbon production by Emiliania huxleyi exposed to different CO2 concentrations: a mesocosm experiment. Aquatic Microbial Ecology, 34 (1). pp. 93-104. DOI 10.3354/ame034093.

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Engel, A. , Thoms, S., Riebesell, U. , Rochelle-Newall, E. and Zondervan, I. (2004) Polysaccharide aggregation as a potential sink of marine dissolved organic carbon. Nature, 428 . pp. 929-932. DOI 10.1038/nature02453.

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Schneider, B., Engel, A. and Schlitzer, R. (2004) Effects of depth- and CO2-dependent C:N ratios of particulate organic matter (POM) on the marine carbon cycle. Open Access Global Biogeochemical Cycles, 18 (2). GB2015. DOI 10.1029/2003GB002184.

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Passow, U., Engel, A. and Ploug, H. (2003) The role of aggregation for the dissolution of diatom frustules. FEMS Microbiology Ecology, 46 (3). pp. 247-255. DOI 10.1016/S0168-6496(03)00199-5.

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Engel, A. , Goldthwait, S., Passow, U. and Alldredge, A. (2002) Temporal decoupling of carbon and nitrogen dynamics in a mesocosm diatom bloom. Limnology and Oceanography, 47 (3). pp. 753-761. DOI 10.4319/lo.2002.47.3.0753.

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Engel, A. , Meyerhöfer, M. and von Bröckel, K. (2002) Chemical and biological composition of suspended particles and aggregates in the Baltic Sea in summer (1999).. Estuarine, Coastal and Shelf Science, 55 . pp. 729-741. DOI 10.1006/ecss.2001.0927.

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Engel, A. and Schartau, M. (1999) Influence of transparent expolymer particles (TEP) on sinking velocity of Nitzschia closterum aggregates. Open Access Marine Ecology Progress Series, 182 . pp. 69-76. DOI 10.3354/meps182069.

Articles in a Scientific Journal - without review

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Galgani, L. and Engel, A. (2012) The ocean has a gel-like skin made of proteins. Open Access SOLAS News, 14 . pp. 7-8.

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Engel, A. and Nöthig, E. M. (2009) Future carbon cycling in the Arctic Ocean. iLEAPS Newsletter, 8 . pp. 24-27.

Book chapters


Engel, A. (2023) Ozeane im Wandel. In: Heidelberger Standards der Klimamedizin. , ed. by Nikendei, C., Bugaj, T. J., Cranz, A., Herrmann, A. and Tabatabai, J.. HeiCuMed, Heidelberg, Germany, pp. 26-31.

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Niehoff, B., Bauerfeind, E., Knüppel, N., Wiegmann, S., Busch, K., Endres, S. , Ramirez Perez, M., Weinisch, L., Bracher, A., Metfies, K., Nöthig, E. M., Peeken, I., Engel, A. and Stoeck, T. (2015) Plankton Ecology and Biogeochemistry in a Changing Arctic Ocean (PEBCAO). Open Access In: The Expedition PS93.2 of the Research Vessel POLARSTERN to the Fram Strait in 2015. , ed. by Bornemann, H.. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 693 . Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany, pp. 38-42. DOI 10.2312/BzPM_0693_2015.

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Engel, A. , Laß, K., Wurl, O. and Latif, M. T. (2014) Descriptive indicators for surface conditions. In: Guide to best practices to study the ocean's surface. , ed. by Cunliffe, M. and Wurl, O.. Occasional Publications of the Marine Biological Association of the United Kingdom . Marine Biological Association of the United Kingdom, Plymouth, UK, pp. 96-101.


Galgani, L., Roa, J. and Engel, A. (2013) Sea-surface microlayer. In: Surface Ocean – Lower Atmosphere Study (SOLAS) in the upwelling region off Peru - Cruise No. M91 – December 01 – December 26, 2012 – Callao (Peru) – Callao (Peru). , ed. by Bange, H. W.. Meteor-Berichte, M91 . DFG Senatskommision für Ozeanographie, Bremen, Germany, pp. 36-37, 69 pp. DOI 10.2312/cr_m91.

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Lalande, C., Xiao, X., Oetjen, K., Peeken, I., Fernandez-Mendez, M., David, C., Flores, H., Piontek, J., Galgani, L., Nöthig, E., Niehoff, B., Metfies, K. and Engel, A. (2013) Plankton Ecology. Open Access In: The Expedition of the Research Vessel "Polarstern" to the Arctic in 2012 (ARK XXVII/3). , ed. by Boetius, A.. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 663 . Alfred-Wegener-Institut Helmholtz-Zentrum für Polarund Meeresforschung, Bremerhaven, Germany, pp. 47-51, 166 pp.

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Voß, M., Baker, A., Bange, H. W. , Conley, D., Deutsch, B., Engel, A. , Heiskanen, A. S., Jickells, T., Lancelot, C., McQuatters-Gollop, A., Middelburg, J., Schiedek, D. and Slomp, C. (2011) Nitrogen processes in coastal and marine ecosystems. In: The European Nitrogen Assessment: Sources, Effects and Policy Perspectives. , ed. by Sutton, M.. Cambridge University Press, New York, USA, pp. 147-176. ISBN 978-1-107-00612-6

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Engel, A. , Barcelos e Ramos, J., Geider, R., Hutchins, D. A., Lee, C., Rost, B., Röttgers, R. and Thingstad, F. (2010) Production and export of organic matter. Open Access In: Guide to Best Practices for Ocean Acidification Research and Data Reporting. ; Chapter 3 , ed. by Riebesell, U., Fabry, V. J., Hansson, L. and Gattuso, J. P.. Publications Office of the European Union, Luxembourg, pp. 181-200.


Engel, A. (2010) Determination of Marine Gel Particles. In: Practical Guidelines for the Analysis of Seawater. . CRC-Press, Boca Raton, USA, pp. 125-142. ISBN 978-1-4200-7306-5 DOI 10.1201/9781420073072.ch7.


LaRoche, J., Rost, B. and Engel, A. (2010) Bioassays, batch culture and chemostat experimentation, Approaches and tools to manipulate the carbonate chemistry. In: Guide to Best Practices for Ocean Acidification Research and Data Reporting. , ed. by Riebesell, U., Fabry, V. J., Hansson, L. and Gattuso, J. P.. Publications Office of the European Union, Luxembourg, pp. 81-94.

Conference papers

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Endres, S. , Hepach, H. , Marandino, C., Quack, B. and Engel, A. (2015) Mikrobielle Kontrolle organischer Bromverbindungen im oberen Ozean. [Paper] In: Statusseminar Meeresforschung mit FS SONNE 2015. , 12.-13.02.2015, Bremen . Tagungsband Statusseminar Meeresforschung mit FS SONNE 2015. ; p. 245 .

[thumbnail of A0308.pdf]

Schartau, M. , Engel, A. and Colijn, F. (2010) Transformation of dissolved organic matter and its diverse effect on higher trophic level. Open Access [Paper] In: ICES Annual Science Conference. , 22.-26.09.2008, Halifax, Canada . ICES Council Meeting Papers, 2008 (A:03).

Presentations


Engel, A. (2023) Exopolymeric Substances and Their Potential Role in Marine Biogeochemical Cycling and Feedback Processes. [Talk] In: RTG2530 Seminar. , 24.01.2023, Hamburg, Germany .


Engel, A. (2023) Extracellular polymeric substances and their potential role in air-sea exchange processes. [Invited talk] In: Leipziger Meteorologisches Kolloquium, TROPOS. , 31.01.2023, Leipzig, Germany .


Engel, A. (2023) Lost at Sea: Tracing the Fate of Ocean Plastics. [Talk] In: Changing Waters Event. , 22.11.2023, Consulate General of India, Kohlhöfen 21, Hamburg .


Engel, A. (2023) New insights into measurements of the distribution of gel-like particles and their carbon content in the surface ocean. [Talk] In: Workshop on Pelagic Particle Dynamics. , 04.-06.10.2023, Brüssel .


Engel, A. (2022) Exopolymeric Substances and Their Potential Role in Marine Biogeochemical Cycling and Feedback Processes. [Invited talk] In: Gordon Research Conference "Organic Geochemistry". , 31.07.-05.08.2022, Holderness, USA .


Engel, A. (2019) Colloidal OM and marine gels from the microlayer to the deep sea. [Invited talk] In: HWK Workshop-Marine Organic Biogeochemistry. , 27.-30.04.2019, Delmenhorst, Germany .


Engel, A. (2019) Marvelous Marine Microgels. [Talk] In: ASU School of Life Sciences Seminar, Arizona State University. , 11.10.2019, Tempe, USA .

[thumbnail of EGU2019-18835-1.pdf]

Loginova, A. N. , Dale, A. W. , Le Moigne, F. A. C. , Thomsen, S. , Sommer, S., Wallmann, K. J. G. and Engel, A. (2019) Sediment release of dissolved organic matter in the oxygen minimum zone off Peru. Open Access [Talk] In: EGU General Assembly 2019. , 08.-13.04.2019, Vienna, Austria . Geophysical Research Abstracts, 21 (EGU2019-18835-1, 2019).


Engel, A. (2017) The organic matter composition of the sea surface microlayer in response to increasing wind speed and potential implications for air-sea exchange processes. [Invited talk] In: New Frontiers in Ocean-Atmosphere Exchange. , 14.-19.05.2017, Cargese, France .


Engel, A. (2017) Supply of organic matter to oxygen minimum zones in eastern boundary upwelling systems. [Invited talk] In: 3. Xiamen Symposium on Marine Environmental Sciences. , 09.-11-01.2017, Xiamen, China .


Bergen, B., Endres, S. , Engel, A. , Sommer, U. and Jürgens, K. (2015) Effect of acidification and warming on planktonic bacterial communities during two seasonal phytoplankton bloom mesocosms. [Talk] In: ASLO Aquatic Sciences Meeting 2015. , 22.-27.02.2015, Granada, Spain .


Cisternas-Novoa, C., Lee, C. and Engel, A. (2015) Transparent exopolymer particles (TEP) and coomassie stainable particles (CSP): comparing their origin and behavior using flowcam visualization and imaging. [Talk] In: ASLO Aquatic Sciences Meeting 2015. , 22.-27.02.2015, Granada, Spain .


Endres, S. , Unger, J., Wannicke, N., Nausch, M., Voss, M. and Engel, A. (2015) Response of the filamentous cyanobacterium Nodularia spumigena to pCO2 - Exudation and extracellular enzymes. [Talk] In: International Workshop „Marine research and management“. , 12.06.2015, University of Riga, Latvia .


Engel, A. (2015) Impacts of anthropogenic perturbations on organic matter cycling in the surface ocean. [Invited talk] In: Marine research and management. , 06.06.2015, University of Latvia, Riga, Lativa .


Engel, A. , Sun, C. and Sperling, M. (2015) Influence of wind speed on the accumulation of organic matter in the surface microlayer during the Aeolotron experiment (2014). [Invited talk] In: The Ocean Surface Microlayer and Biogeochemical Feedbacks in the Earth System workshop, Ocean Interfaces semester topic Future Ocean. , 01.-03.07.2015, Kiel, Germany .

[thumbnail of SOPRAN_M91_presentation_Hepach_2015.pdf]

Hepach, H. , Quack, B., Fuhlbruegge, S., Raimund, S., Atlas, E. L., Engel, A. , Bracher, A., Flöter, S. and Krüger, K. (2015) Halocarbons from the Peruvian upwelling system. [Talk] In: SOPRAN Annual Meeting 2015. , 17.-18.03.2015, Mainz, Germany .

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Endres, S. , Galgani, L., Riebesell, U. , Schulz, K. G. and Engel, A. (2014) Do bacteria thrive when the ocean acidifies? Results from an off-­shore mesocosm study. [Talk] In: IMBER Open Science Conference FUTURE OCEAN. , 23.-27.06.2014, Bergen, Norway .


Endres, S. , Galgani, L., Riebesell, U. , Schulz, K. G. and Engel, A. (2014) Stimulated Bacterial Growth under Elevated pCO2: Results from an Off-Shore Mesocosm Study. [Talk] In: BIOACID Annual Meeting 2014. , 10-11.09.2014, Kiel, Germany .


Engel, A. (2014) Dynamics of extracellular organic matter in a changing ocean. [Invited talk] In: SOLAS Symposium Day on Biological, Chemical and Physical processes at the ocean-atmosphere interface. , 19.06.2014, Weizmann Institute of Science, Rehovot, Israel .


Engel, A. (2014) The marine surface microlayer: A unique link between the ocean and the atmosphere. [Invited talk] In: International SCOR Sea Surface Microlayer (SML) Working Group Workshop. , 12.-18.10.2014, Qingdao, China .


Engel, A. (2014) Pelagic ecosystems in a high CO2 world: Can we predict what the future may bring?. [Invited talk] In: Swedish Marine Sciences Conference. , 10.-12.11.2014, Umea, Sweden .


Engel, A. (2014) Rückkopplungsprozesse zwischen Ozean und Atmosphäre in Zeiten des Klimawandels. [Invited talk] In: Naturwissenschaftlicher Verein Schleswig-Holsteins. , 19.02.2014, Kiel, Germany .


Galgani, L., Piontek, J. and Engel, A. (2014) The Gel-like nature of the sea-surface microlayer during the 2012 arctic sea-ice minimum. [Talk] In: Ocean Sciences Meeting 2014. , 23.-28.02.2014, Honululu, Hawaii, USA .


Engel, A. (2013) Dynamics of extracellular organic matter in a changing ocean. [Invited talk] In: ZMT-Kolloquium. , 06.03.2013, Bremen, Germany .


Engel, A. , Borchard, C., Piontek, J., Sperling, M., Riebesell, U. , Schulz, K. G. and Bellerby, R. (2013) Responses of marine microorganisms to ocean acidification during a mesocosm study in the Arctic (Svalbard). [Talk] In: EGU General Assembly 2013. , 07.-12.04.2013, Vienna, Austria .


Metfies, K., Noethig, E. M., Bracher, A., Engel, A. , Niehoff, B., Peeken, I., Bauerfeind, E., Cherkasheva, A., Gaebler-Schwarz, S., Hardge, K., Kilias, E., Kraft, A., Lalande, C., Piontek, J. , Thomisch, K. and Wurst, M. (2013) Phytoplankton Ecology and Biogeochemistry in a Changing Arctic Ocean - Molecular Genetics meets Biological Oceanography. [Talk] In: When Genetics Meets Oceanography, Observatoire Oceanologique Université Pierre et Marie Curie & Centre national de la recherche Scientifique. , 14.-16.10.2013, Banyuls sur Mer, France .


Engel, A. (2012) Biological processes responsible for gel precursor production. [Invited talk] In: SOLAS-IGAC Workshop: Marine gels and their impact on atmospheric aerosol and cloud. , 12.-14.10.2012, Kiel, Germany .


Engel, A. , Szlosek-Chow, J., Biermann, A. and Lee, C. (2012) The role of calcification and transparent exopolymer particles on aggregate formation of Emiliania huxleyi. [Invited talk] In: 2. International Workshop on Marine Aggregates from Molecular Principles to Biogeochemical Impacts. , 15.-17.08.2012, Bremen, Germany .


Endres, S. , Unger, J., Wannicke, N. and Engel, A. (2011) Effect of ocean acidification on microbial degradation of organic matter derived from a Thalassiosira weissflogii chemostat culture. [Talk] In: 4. International conference Enzymes in the Environment: Activity, Ecology and Application. , 17.-21.07.2011, Bad Nauheim, Germany .


Endres, S. , Unger, J., Wannicke, N., Nausch, M., Voss, M. and Engel, A. (2011) Effect of ocean acidification on microbial degradation of organic matter derived from a Thalassiosira weissflogii chemostat culture . [Talk] In: YOUMARES 2.0 - Ocean amidst science, innovation and society. , 07.-09.09.2011, Bremerhaven, Germany .


Endres, S. , Unger, J., Wannicke, N., Nausch, M., Voss, M. and Engel, A. (2011) Microbial degradation of organic matter produced by Thalassiosira weissflogii during a combined chemostat and batch experiment under different pCO2 levels. [Talk] In: SAME12 - 12. Symposium on Aquatic Microbial Ecology. , 28.08.-02.09.2011, Rostock/Warnemünde, Germany .


Endres, S., Unger, J., Wannicke, N., Nausch, M., Voss, M. and Engel, A. (2011) Impact of ocean acidification on microbial degradation of organic matter. [Talk] In: BIOACID Annual Meeting 2011. , 26.-30.09.2011, Bremen, Germany .


Engel, A. (2011) Crossing borders: Dynamics of extracellular organic matter in marine systems. [Invited talk] In: COST Action 735 Meeting: Sub-WG 2&3 meeting 'What is the sea surface microlayer? Towards a unified physical, chemical and biological definition of the air-ocean interface'. , 25.-26.01.2011, Plymouth, UK .


Engel, A. , Borchard, C., Bellerby, R., Klavsen, S., Piontek, J., Riebesell, U. and Schulz, K. (2011) Sensitivity of DOC production to pCO2 in arctic pelagic communities: Insights from the 2010 Svalbard mesocosm study. [Invited talk] In: EPOCA Third Annual Meeting, Royal Academy of Belgium for Science and the Arts. , 09.-13.05.2011, Brussels, Belgium .


Galgani, L., Endres, S. and Engel, A. (2011) The C-cycle on ocean’s surface. Insights to the composition of the sea surface microlayer. [Talk] In: SOPRAN Annual Meeting 2011. , 22.-23.03.2011, Heidelberg, Germany .


Kanzow, T. and Engel, A. (2011) Near-coastal supply of oxygen and dissolved organic matter to the oxygen minimum zone. [Talk] In: SFB754 Retreat Climate-biogeochemistry interactions in the tropical ocean. , 22.02.2011, Lübeck, Germany .


Schulz, K., Bellerby, R., Engel, A. , Gattuso, J. P., Hessen, D., Klavsen, S., Krug, S., Nondal, G., Silyakova, A., Sswat, M. and Riebesell, U. (2011) Organic matter dynamics and CO2 responses of the 2010 Svalbard mesocosm experiment. [Talk] In: EGU General Assembly 2011. , 03.-08.04.2011, Vienna, Austria .


Unger, J., Wannicke, N., Voss, M., Endres, S. , Engel, A. , Nausch, G. and Nausch, M. (2011) Impact of pCO2 on P-pool changes under varying phytoplankton/bacteria ratios. [Talk] In: BIOACID Annual Meeting 2011. , 26.-30.09.2011, Bremen, Germany .


Wannicke, N., Endres, S. , Unger, J., Engel, A. , Grossart, H. P., Nausch, M. and Voss, M. (2011) Growth and production of Nodularia spumigena under elevated CO2 concentrations. [Talk] In: Limnology & Oceanography in a Changing World: 2011 ASLO Aquatic Sciences Meeting. , 13.-18.02.2011, San Juan, Puerto Rico .


Wannicke, N., Unger, J., Endres, S. , Nausch, M., Salka, I., Engel, A. , Grossart, H. P. and Voss, M. (2011) Oceans turning sour - will it directly affect growth and production of heterotrophic bacteria? - What we have learned so far from laboratory to mesocosm experiments. [Talk] In: 2. Annual Meeting of BIOACID. , 26.-30.09.2011, Bremen, Germany .


Wurst, M., Kilias, E., Giebel, H., Nöthig, E., Metfies, K. and Engel, A. (2011) Microbial activities, dynamics and diversity in a changing Arctic Ocean (Fram Strait). [Talk] In: SAME12 - 12. Symposium on Aquatic Microbial Ecology. , 28.08.-02.09.2011, Rostock/Warnemünde, Germany .


Biermann, A., Engel, A. , Sommer, U. and Riebesell, U. (2010) Effect of a ‚sunny week‘ on biomass composition in a marine plankton community (Why copepods may not like sunny weeks in winter). [Talk] In: Life in warming waters: Aquashift Conference. , 07.09.2010, Kiel, Germany .

[thumbnail of Talk_Engel.pdf]

Engel, A. (2010) How will biogeochemical processes in the ocean respond to sea surface warming?. [Invited talk] In: Darwin Days. , 21.-22.04.2010, Darwin Center for Biogeosciences, NH Koningshof, Veldhoven, Netherlands .


Engel, A. (2010) Microbial Control of Dissolved Organic Matter in Changing Seas. [Invited talk] In: IFM-GEOMAR Colloquium. , 06.05.2010, Kiel, Germany .


Engel, A. (2010) Why marine organics matter when climate changes. [Invited talk] In: Colloquium University Hamburg. , 2010, Hamburg, Germany .


Harlay, J., Borges, A. V., Delille, B., Suykens, K., de Bodt, C., Sabbe, K., van Oostende, N., Engel, A. , Piontek, J. and Chou, L. (2010) Towards a comprehensive C-budgeting approach of a coccolithophorid bloom in the northern Bay of Biscay: results from PEACE project. [Talk] In: XII International Symposium on Oceanography of the Bay of Biscay. , 03.-06.05.2010, Brest, France .


Lunau, M., Erickson, M., Voß, M., Ducklow, H. and Engel, A. (2010) Impact of unbalanced nitrate inputs on the microbial transformation of Nitrogen: a stable isotope and sorting flow cytometric study. [Talk] In: ASLO Summer Meeting. , 06.-11.06.2010, Santa Fe, USA .

[thumbnail of S_3.9_Nausch.pdf]

Nausch, G., Endres, S. , Engel, A. , Grossart, H. P., Nausch, M., Unger, J., Voss, M. and Wannicke, N. (2010) Effects of ocean acidification on the turnover of organic matter in pelagic ecosystems. Open Access [Talk] In: EPOCA, BIOACID, UKOARP Annual Meeting 2010. , 27.09.-30.09.2010, Bremerhaven, Germany .


Peeken, I., Nöthig, E., Bauerfeind, E., Bracher, A., Engel, A. , Metfies, K., Niehoff, B., Okolodkov, Y., Gäbler-Schwarz, S., Kilias, E., Kuckero, L., Schwarz, J., Wurst, M., Händel, N., Lorenzen, C. and Murawski, S. (2010) Plankton Ecology and Biogeochemistry in a Changing Arctic Ocean (PEBCAO). [Talk] In: International Polar Year Oslo Science. , 8.-12.06.2010, Oslo, Norway .


Piontek, J., Händel, N., Sperling, M., Riebesell, U. and Engel, A. (2010) Effects of rising seawater CO2 on the bacterial turnover of organic matter in temperate marine systems. [Talk] In: 13. ISME Symposium. , 22.-27.08.2010, Seattle, USA .

[thumbnail of S_3.2_Piontek.pdf]

Piontek, J., Händel, N., Sperling, M., Riebesell, U. and Engel, A. (2010) Effects of rising seawater CO2 on the bacterial turnover of organic matter in temperate marine systems. Open Access [Talk] In: EPOCA, BIOACID, UKOARP Annual Meeting 2010. , 27.09.-30.09.2010, Bremerhaven, Germany .


Schartau, M. , Colijn, F., Engel, A. , Gerdts, G., Metfies, K., Schlüter, M. and Moll, A. (2010) Towards an integrative approach in phytoplankton and microbial ecology. [Talk] In: ICES-WGPME Annual Meeting (ICES Working Group on Phytoplankton and Microbial Ecology). , 02.-05.03.2010, Aberdeen, UK .


Sommer, U., Lewandowska, A. M., Biermann, A., Breithaupt, P., Lengfellner, K., von Scheibner, K., Wohlers, J., Engel, A. , Jürgens, K., Hoppe, H. G., Riebesell, U. and Gaedke, U. (2010) Climate change effects on the plankton spring bloom - overview of the Kiel Mesocosm Cluster. [Talk] In: Aquashift-Conference: LIfe in Warming Waters. , 04.-07.10.2010, Kiel, Germany .


Biermann, A., Engel, A. , Sommer, U. and Riebesell, U. (2009) Effect of temperature and copepod density on the cycling of organic matter - the Kiel mesocosm experiment 2009. [Talk] In: AQUASHIFT-Workshop. , 07.-09.09, Kiel, Germany .


Borchard, C., Händel, N., Borges, A. V. and Engel, A. (2009) A new chemostat system to investigate combined temperature and CO2 effects on marine phytoplankton species. [Talk] In: ASLO Aquatic Sciences Meeting 2009. , 25.-30.01.2009, Nice, France .


Engel, A. (2009) Will the biological pump respond to ocean acidification?. [Invited talk] In: Gordon Research Conferences; Chemical Oceanography; Process, Dynamics, and Change in the Anthropocene Ocean. , 02.-07.08.2009, Tilton, NH, USA .


Peeken, I., Bracher, A., Engel, A. , Metfies, K., Niehoff, B. and Nöthig, E. M. (2009) Plankton ecology in a changing Arctic Ocean - Planned investigations within the new AWI research programme. [Talk] In: Developing Long Term International Collaboration on Methane Hydrate Research and Monitoring in the Arctic Region. , 18.-20.02.2009, Horntje (Texel), Netherlands .


Biermann, A., Engel, A. , Sommer, U. and Riebesell, U. (2008) The combined effect of temperature and light on the cycling of organic matter during a phytoplankton bloom (spring 2008) - a mesocosm study. [Talk] In: 5. AQUASHIFT-Workshop (in the framework of the DGL Annual Meeting). , 22.-26.09, Konstanz .


Borchard, C., Piontek, J., Händel, N. and Engel, A. (2008) Investigating the combined effect of pCO2 and temperature on Emiliania huxleyi using a chemostat system. [Talk] In: PEACE Annual Workshop 2008. , 02.2008, Brussels, Belgium .

[thumbnail of chou_et_al_2008.pdf]

Chou, L., Harlay, J., De Bodt, C., Roevros, N., Borges, A. V., Suykens, K., Delille, B., Sabbe, K., Van Oostende, N., Engel, A. , Piontek, J., Händel, N., Groom, S. and Schmidt, S. (2008) Biogeochemistry of Coccolithophore Blooms along the Continental Margin of the Northern Bay of Biscay. [Talk] In: EUR-OCEANS Final Conference. , 25.-27.11.2008, Rome, Italy .


Engel, A. (2008) Organic and export production, elemental ratios. [Invited talk] In: Workshop on Best Practices for Ocean Acidification Research and Data Reporting, IFM-GEOMAR. , 19.-21.11.2008, Kiel, Germany .


Engel, A. (2008) Reactivity and fate of organic matter in the ocean. [Invited talk] In: IFM-GEOMAR Colloquium. , 2008, Kiel, Germany .


Engel, A. (2008) Testing the effects of ocean acidification on marine plankton: What can we expect in the future?. [Invited talk] In: SOMAS Special Seminar, Stony Brook University. , 2008, Stony Brook, USA .


Piontek, J., Borchard, C., Händel, N. and Engel, A. (2008) Effects of rising CO2 on microbial degradation of organic matter derived from coccolithophores. [Talk] In: PEACE Annual Workshop. , 02.2008, Brussels, Belgium .


Schartau, M. , Engel, A. and Colijn, F. (2008) Transformation of dissolved organic matter and its diverse effect on higher trophic level. [Talk] In: ICES Annual Science Conference. , 22.-26.09.2008, Halifax, Canada .


Szlosek, J., Engel, A. , Armstrong, R. and Lee, C. (2008) Potential effects of climate change on particle coagulation efficiency in the ocean. [Talk] In: Ocean Sciences Meeting 2008. , 02.-07.03.2008, Orlando, FL, USA .

[thumbnail of van_oostende_isme12.pdf]

Van Oostende, N., Vyverman, W., Harlay, J., De Bodt, C., Chou, L., Suykens, K., Borges, A. V., Piontek, J., Engel, A. and Sabbe, K. (2008) Coccolithophore bloom dynamics shape bacterioplankton communities in the northern Bay of Biscay. Open Access [Talk] In: ISME12 - 12. International Symposium on Microbial Ecology. , 17.-22.08.2008, Cairns, Australia .


Wohlers, J., Engel, A. , Zöllner, E., Sommer, U. and Riebesell, U. (2008) The impact of rising sea surface temperature on the cycling of organic matter - an indoor mesocosm study. [Talk] In: International Symposium "Effects of Climate Change on the World's Oceans". , 19.-23.05.2008, Gijón, Spain .


Wurst, M., Voss, M., Engel, A. , Grossart, H. P., Riebesell, U. and Lunau, M. (2008) Coupling of transparent exopolymer particle dynamics and microbiological processes during an ocean acidification experiment in the Baltic Sea. [Talk] In: Ocean Sciences Meeting. , 02.-07.03.2008, Orlando, FL, USA .


Wurst, M., Voss, M., Engel, A. , Grossart, H. P., Riebesell, U. and Lunau, M. (2008) Coupling of transparent exopolymer particle dynamics and microbiological processes during an ocean acidification experiment in the Baltic Sea. [Talk] In: SOPRAN annual meeting 2008. , 11.-12.03.2008, Rostock/Warnemünde, Germany .


Engel, A. , Bellerby, R., Delille, B., Schulz, K. G., Riebesell, U. and Schartau, M. (2007) Effect of CO2 concentration on suspended particle dynamics during a mesocosm bloom experiment (Peece II). [Talk] In: EGU General Assembly. , 15.-20.04.2007, Vienna, Austria .


Koch, S., Händel, N., Wirtz, K. and Engel, A. (2007) Testing the effects of pCO2 on the coccolithophore Emiliania huxleyi during different growth stages. [Talk] In: EGU General Assembly 2007. , 15.-20.04.2007, Vienna, Austria .


Lunau, M., Koch, S., Piontek, J., Händel, N. and Engel, A. (2007) Investigating the effects of changes in CO2 concentration on marine plankton dynamics with batch and chemostat systems. [Talk] In: 42. European Marine Biology Symposium (EMBS). , 27.-31.08.2007, Kiel, Germany .


Lunau, M., Martens-Habbena, W., Simon, M., Engel, A. and Gasol, J. (2007) Preservation of marine bacteria induces rapid changes of cellular nucleic acids. [Talk] In: SAME10. , 02.-07.09.2007, Faro, Portugal .


Passow, U., De La Rocha, C., Arnosti, C., Grossart, H. P., Murray, A. E. and Engel, A. (2007) Overview of a mesocosm experiment investigating the impact of phytoplankton on the microbial loop. [Talk] In: ASLO 2007 Aquatic Sciences Meeting: Water Rocks. , 04.-09.02.2007, Santa Fe, USA .


Piontek, J., Händel, N. and Engel, A. (2007) Effects of rising temperature and pCO2 on bacterial degradation processes in marine systems. [Talk] In: EGU General Assembly 2007. , 15.-20.04.2007, Vienna, Austria .


Piontek, J., Händel, N. and Engel, A. (2007) Effects of temperature on the microbial decomposition of particle aggregates in the ocean. [Talk] In: 42. European Marine Biology Symposium (EMBS). , 27.-31.08.2007, Kiel, Germany .


Piontek, J., Händel, N., Lunau, M. and Engel, A. (2007) Investigating the effects of changing CO2 concentration on a natural marine plankton community using a chemostat system. [Talk] In: IUGG 24. General Assembly 2007. , 02.-13.07.2007, Pergugia, Italy .


Piontek, J., Lunau, M., Händel, N., Jansen, S., Neu, T. and Engel, A. (2007) Effects of rising temperature and decreasing pH on degradation activity of marine bacterioplankton. [Talk] In: 10th Symposium on Aquatic Microbial Ecology. , 02.-07.09.2007, Faro, Portugal .


Schartau, M. , Engel, A. , Piontek, J. and Rost, B. (2007) CO2 sensitivities: DOC production and acidification, Modelling the response of marine ecosystems to increasing levels of CO2. [Talk] In: Modelling Workshop. , 12.-14.02.2007, Plymouth, UK .


Sommer, U., Aberle, N., Breithaupt, P., Engel, A. , Hoppe, H. G., Jürgens, K., Lengfellner, K., Riebesell, U. , Walther, K. and Wohlers, J. (2007) Climate change, seasonal plankton succession and mismatch in food chains. [Talk] In: 37th Annual Conference of the Ecological Society of Germany, Austria and Switzerland. , 12.09, Marburg .

[thumbnail of Szlosek_ASLO_07_pre.ppt]

Szlosek, J., Engel, A. , Lee, C. and Armstrong, R. A. (2007) Coagulation efficiency of phytoplankton cells during different growth stages and its relationship to exopolymer particle properties. [Talk] In: ASLO Aquatic Sciences Meeting 2007. , 04.-09.02.2007, Santa Fe, USA .


Wohlers, J., Engel, A. , Sommer, U., Zöllner, E. and Riebesell, U. (2007) The effect of rising sea surface temperature on the concentration, composition and stoichiometry of dissolved organic matter. [Talk] In: 37th Annual Conference of the Ecological Society of Germany, Austria and Switzerland. , 10.-24.09.2007, Marburg, Germany .


Engel, A. (2006) Biogeochemistry of marine particle dynamics and its sensitivity to global change. [Invited talk] In: ICBM Colloquium, University of Oldenburg. , 2006, Oldenburg, Germany .


Engel, A. (2006) The sensitivity of the Biologigal Pump to changing CO2 in the Ocean: What can we learn from present day experiments?. [Invited talk] In: 3rd Japanese-German Frontiers of Science Symposium, Alexander von Humboldt Foundation. , 02.-05.11.2006, Heidelberg, Germany .


Wohlers, J., Engel, A. and Riebesell, U. (2006) The impact of temperature on the temporal development of phytoplankton stoichiometry during a spring blossom. [Other] In: 3. AQUASHIFT Workshop. , 14.-16.11.2006, Kiel, Germany .


Lee, C., Armstrong, R., Engel, A. , Xue, J., Beck, A., Liu, Z., Cochran, K., Peterson, M., Wakeham, S. and Miquel, J. (2005) Perspectives on Mechanisms driving particulate organic carbon (POC) flux: insights from MEDFLUX. [Talk] In: ASLO Summer Meeting 2005. , 19.-24.6.2005, Santiago de Compostela, Spain .


Engel, A. (2004) From dissolved to particulate organic matter: How exopolymer aggregation affects the marine carbon cycle. [Invited talk] In: Oceans and Atmosphere Colloquium. , 2004, Marine Science Research Center, Sate University of New York at Stony Brook, Stony Brook, USA .


Grossart, H. P., Allgaier, M., Passow, U., Engel, A. , Schulz, K. and Riebesell, U. (2004) The effect of different CO2 concentrations on bacterial abundance and activity in the course of a diatom bloom. [Talk] In: Abstract VAM. , 2004, Braunschweig, Germany .


Thoms, S. and Engel, A. (2004) Modeling the formation of transparent exopolymer particles during a bloom of the coccolithophorid Emiliania huxleyi. [Talk] In: ASLO/TOS Ocean Research Conference 2004. , 15.-20.02.2004, Honolulu, USA .


Engel, A. , Heemann, C., Schartau, M. , Schneider, U., Thoms, S., Delille, B., Jacquet, S., Zondervan, I. and Riebesell, U. (2003) Transparent Exopolymer Particles (TEP) production by marine phytoplankton in response to increasing CO2: laboratory and field mesocosm experiments. [Talk] In: EGS-AGU-EUG Joint Assembly. , 06.-11.04.2003, Nice, France .


Schartau, M. , Engel, A. , Völker, C., Wolf-Gladow, D. and Schröter, J. (2003) Modelled sensitivities of biogenic carbon fluxes to variations in carbon dioxide. [Talk] In: EGS-AGU-EUG Joint Assembly 2003. , 06.-11.04.2003, Nice, France .


Zondervan, I., Aerts, K., Bellerby, R., Beaufort, L., Benthien, A., Chou, L., Delille, B., Engel, A. , Gattuso, J. P., Harlay, J., Heemann, C., Hoffmann, L., Jacquet, S., Nejstgaard, J., Pizay, M. D., Riebesell, U. , Rochelle-Newall, E., Schneider, U. and Terbrueggen, A. (2003) Biological responses to CO2-related changes in seawater carbonate chemistry during a bloom of Emiliania huxleyi. [Talk] In: EGS-AGU-EUG Joint Assembly 2003. , 06.-11.04.2003, Nice, France .


Engel, A. , Riebesell, U. and Zondervan, I. (2002) The Role of Transparent Exopolymer Particles (TEP) for Variations of the C:N:P Ratios during Phytoplankton Blooms. [Talk] In: EGS XXVII General Assembly. , 21.- 26.04.2002, Nice, France .


Passow, U. and Engel, A. (2002) The role of aggregation for the dissolution of diatom frustules. [Talk] In: 8. Symposium on Aquatic Microbial Ecology (SAME-8). , 25.-29.10.2002, Taormina, Sicily, Italy .


Engel, A. (2001) Bildung von transparenten exopolymeren Partikeln (TEP) im Verlauf von Phytoplanktonblüten: Potentielle Bedeutung für den marinen Kohlenstoffkreislauf. [Invited talk] In: ICBM Colloquium, University of Oldenburg. , 2001, Oldenburg, Germany .


Passow, U. and Engel, A. (2001) The Role of Transparent Exopolymer Particles (TEP) in determining C:N ratios of particulate matter. [Talk] In: ASLO Aquatic Sciences Meeting 2001. , 12.-15.02.2001, Albuquerque, USA .


Engel, A. (1999) Einfluß transparenter exopolymerer Partikel (TEP) auf die Bildung und Zusammensetzung von Marinen Aggregaten. [Invited talk] In: Alfred-Wegener-Institut (AWI). , 1999, Bremerhaven, Germany .

Conference posters

[thumbnail of BI_hhepach_73233_SOLASOSC19_CoastSens.pdf]

Hepach, H. , Piontek, J., Schroedter, L. M., Bange, H. W. , Loginova, A. N. and Engel, A. (2019) The CoastSens project - providing a unique tool for coastal environmental monitoring in the Baltic Sea. [Poster] In: SOLAS Open Science Conference 2019. , 21.-25.04.2019, Sapporo, Japan .

[thumbnail of Poster_SOLAS2019_BalticGasEx.pdf]

Ho, D. T., Marandino, C. A., Friedrichs, G., Engel, A. , Booge, D., Bange, H. W. , Barthelmess, T., Fischer, T. , Koffman, T., Lange, F., Quack, B., Paulsen, M., Schlosser, P. and Zhou, L. (2019) Baltic Sea Gas Exchange Experiment (Baltic GasEx). Open Access [Poster] In: SOLAS Open Science Conference 2019. , 21.-25.04.2019, Sapporo, Japan .


Loginova, A. N. , Dale, A. W. , Thomsen, S. , Sommer, S., Wallmann, K. and Engel, A. (2018) Sediment release of dissolved organic matter in the oxygen minimum zone off Peru . [Poster] In: Ocean Deoxygenation Conference. , 03.09.-07.09.2018, Kiel, Germany .

[thumbnail of Halocarbons on Cap Verde_ CV Workshop.pdf]

Quack, B., Fuhlbruegge, S., Hepach, H. , Atlas, E., Stemmler, I., Krüger, K., Bracher, A., Marandino, C. A., Engel, A. , Endres, S. and Tegtmeier, S. (2017) Halocarbons from anthropogenic and natural sources in the Macaronesia region (future research): Cape Verde: A natural laboratory for investigating the cycling of radiatively and chemically active trace gases between the surface ocean and the tropical atmosphere. Open Access [Poster] In: International Workshop on Marine & Atmospheric Sciences. , 12.-17.11.2017, Ocean Science Centre Mindelo, Cape Verde .


Endres, S. , Schiewe, D., Quack, B., Piontek, J., Hepach, H. and Engel, A. (2016) Biogenic sources and sinks of bromocarbon in different marine environments. [Poster] In: Ocean Sciences Meeting 2016. , 21.-26.02.2016, New Orleans, USA .


Piontek, J., Massmig, M., Endres, S. , Le Moigne, F. A. C. , Bange, H. W. and Engel, A. (2016) Bacterial Activity and Organic Matter Turnover in Oxygen Deficient Waters of the Baltic Sea . [Poster] In: Ocean Sciences Meeting 2016. , 21.-26.02.2016, New Orleans, USA .

[thumbnail of FB2_CH_hhepach_OSM2016.pdf]

Hepach, H. , Quack, B., Atlas, E., Fiehn, A., Tegtmeier, S., Bracher, A., Engel, A. , Fuhlbruegge, S. and Krüger, K. (2016) Do climate feedbacks in the tropical East Pacific impact emissions of biogenic halocarbons?. [Poster] In: Ocean Sciences Meeting 2016. , 21.-26.02.2016, New Orleans, USA .


Bergen, B., Endres, S. , Engel, A. , Zark, M., Dittmar, T., Sommer, U. and Jürgens, K. (2015) Effect of acidification and warming on planktonic bacterial communities during two seasonal phytoplankton bloom mesocosms. [Poster] In: SAME14 - Symposium on Aquatic Microbial Ecology. , 23.-28.08.2015, Uppsala, Sweden .


Endres, S. , Hepach, H. , Marandino, C., Quack, B. and Engel, A. (2015) Microbial control of bromocarbons in the surface ocean. [Poster] In: ASLO Aquatic Sciences Meeting 2015. , 22.-27.02.2015, Granada, Spain .


Endres, S. , Hepach, H. , Marandino, C., Quack, B. and Engel, A. (2015) Microbial control of bromocarbons in the surface ocean. [Poster] In: The Ocean Surface Microlayer and Biogeochemical Feedbacks in the Earth System workshop, Ocean Interfaces semester topic Future Ocean. , 01.-03.07.2015, Kiel, Germany .


Endres, S. , Hepach, H. , Marandino, C., Quack, B. and Engel, A. (2015) Microbial control of bromocarbons in the surface ocean. [Poster] In: SOLAS Open Science Conference. , 07.-11.09.2015, Kiel, Germany .


Endres, S. , Piontek, J., Schiewe, D., Marandino, C., Quack, B., Hepach, H. and Engel, A. (2015) Microbial control of bromocarbons in the surface ocean. [Poster] In: Future Ocean: Cluster Retreat 2015. , 14.-15.10.2015, Schleswig, Germany .


Engel, A. and Borchard, C. (2015) Extracellular release of primary production by Emiliana Huxleyi: insights to structure and function of dissolved combined carbohydrates. [Poster] In: ASLO Aquatic Sciences Meeting 2015. , 22.-27.02.2015, Granada, Spain .


Engel, A. , Sun, C. and Sperling, M. (2015) Accumulation patterns of organic matter in the surface microlayer: Results from field, mesocosm and wind channel studies. [Poster] In: SOLAS Open Science Conference. , 07.-11.09.2015, Kiel, Germany .


Galgani, L., Piontek, J. and Engel, A. (2015) Organic composition of the sea-surface microlayer in the Central Arctic under enhanced sea ice melting. [Poster] In: The Ocean Surface Microlayer and Biogeochemical Feedbacks in the Earth System workshop, Ocean Interfaces semester topic Future Ocean. , 01.-03.07.2015, Kiel, Germany .

[thumbnail of SMLworkshop_poster_Hepach_2015-1.pdf]

Hepach, H. , Quack, B., Engel, A. , Fuhlbrügge, S., Atlas, E., Bracher, A., Raimund, S., Flöter, S., Galgani, L., Krüger, K. and Tegtmeier, S. (2015) Contributions from the Peruvian upwelling to the tropospheric iodine loading above the tropical East Pacific. [Poster] In: The Ocean Surface Microlayer and Biogeochemical Feedbacks in the Earth System workshop, Ocean Interfaces semester topic Future Ocean. , 01.-03.07.2015, Kiel, Germany .

[thumbnail of SOLAS_poster_Hepach_oheader-3.pdf]

Hepach, H. , Quack, B., Tegtmeier, S., Engel, A. , Lampel, J., Fuhlbruegge, S., Bracher, A., Atlas, E. and Krüger, K. (2015) Contributions from the Peruvian upwelling to the tropospheric iodine loading above the tropical East Pacific. [Poster] In: SOLAS Open Science Conference. , 07.-11.09.2015, Kiel, Germany .


Krall, K. E., Kunz, J., Bopp, M., Kiefhaber, D., Ribas Ribas, M., Rahlff, J., Wurl, O., Sun, C., Sperling, M., Engel, A. , Nölscher, A. C., Derstroff, B., Williams, J., Schneider, B. and Jähne, B. (2015) Air-sea gas transfer of sparingly soluble tracers during the SOPRAN seawater gas exchange experiment at the Heidelberg aeolotron. [Poster] In: SOLAS Open Science Conference. , 07.-11.09.2015, Kiel, Germany .


Michels, J., Stippkugel, A., Wirtz, K. and Engel, A. (2015) Aggregation of microplastics with marine biogenic particles. [Poster] In: ASLO Aquatic Sciences Meeting 2015. , 22.-27.02.2015, Granada, Spain .


Sun, C., Sperling, M. and Engel, A. (2015) Effect of wind speed on the size distribution of biogenic gel particles in the surface microlayer. [Poster] In: SOLAS Open Science Conference. , 07.-11.09.2015, Kiel, Germany .


Cisternas-Novoa, C., Lee, C. and Engel, A. (2014) Transparent Exopolymeric (TEP) and Coomassie Blue Stainable (CSP) particles in the North Atlantic Ocean, using a new dye-binding assay for determination of CSP. [Poster] In: Ocean Sciences Meeting 2014. , 23.-28.02.2014, Honululu, Hawaii, USA .


Dammrich, T., van Beusekom, J. E. and Engel, A. (2014) Characteristics of marine aggregates during the phytoplankton spring bloom in a temperate tidal basin. [Poster] In: Ocean Sciences Meeting 2014. , 23.-28.02.2014, Honululu, Hawaii, USA .


Endres, S. , Karthäuser, C. and Engel, A. (2014) Combined effects of temperature and CO2 on organic matter dynamics in the surface microlayer and consequences for air-sea gas exchange. [Poster] In: BIOACID Annual Meeting 2014. , 10-11.09.2014, Kiel, Germany .

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Loginova, A. , Roa, J., Thomsen, S. , Kanzow, T. and Engel, A. (2014) Distribution of transparent exopolymer particles in the easter tropical south Pacific. [Poster] In: Ocean Sciences Meeting 2014. , 23.-28.02.2014, Honululu, Hawaii, USA .


Cisternas-Novoa, C., Lee, C., Engel, A. , Dammrich, T. and de Jesus, R. (2013) Effect of Ocean Acidification on the Gel Particle Composition and Physical Properties of Aggregates of Diatoms. [Poster] In: Gordon Research Conference - Chemical Geography of the Sea. , 04.-09.08.2013, Biddeford, USA .


Galgani, L., Piontek, J. and Engel, A. (2013) The marine surface microlayer, link between ocean surface biology and cloud properties: results from an expedition to the Central Arctic. [Poster] In: 10. JaGFOS Symposium. , 31.10. - 3.11.13, Tokyo, Japan .


Galgani, L., Roa, J., Engel, A. , Bange, H. W. and Gade, M. (2013) The sea-surface microlayer during the R/V Meteor Cruise M91: Measurements and satellite detection of surface films. [Poster] In: SOPRAN Kick-off Meeting. , 19.-20.03.2013, Leipzig, Germany .


Galgani, L., Roa, J., Engel, A. , Bange, H. W. and Gade, M. (2013) The sea-surface microlayer during the R/V Meteor Cruise M91: Measurements and satellite detection of surface films. . [Poster] In: SOPRAN Kick-off Meeting. , 19.-20.03.2013, Leipzig, Germany .


Galgani, L., Stolle, C., Endres, S. , Schulz, K. G., Jürgens, K. and Engel, A. (2013) Bacteria mediated alteration of the gelatinous surface microlayer. [Poster] In: SOPRAN Kick-off Meeting. , 19.-20.03.2013, Leipzig, Germany .


Stolle, C., Galgani, L., Endres, S. , Schulz, K. G., Engel, A. and Jürgens, K. (2013) Interplay of bacteria and organic gel particles at the air-sea interface: effects on ocean carbon dynamics in a changing climate. [Poster] In: First EMBO Conference on Aquatic Microbial Ecology – SAME13. , 8.09.13-10.09.13, Stresa, Italy .


Endres, S. , Galgani, L. and Engel, A. (2012) Marine bacteria thrive when the ocean acidifies. [Poster] In: ISME14 - 14th International Symposium on Microbial Ecology. , 19.-24.08.2012, Copenhagen, Denmark .


Galgani, L. and Engel, A. (2012) Studies on the gelatinous composition of the sea-surface microlayer during indoor and field off-shore mesocosm experiments. [Poster] In: 5. SOPRAN Annual Meeting. , 20.-21.03.2012, Kiel, Germany .


Galgani, L. and Engel, A. (2012) Studies on the sea-surface microlayer composition and the emission of primary marine organic aerosols as consequence of climate change. [Poster] In: SOLAS Open Science Conference. , 07. - 10.05.2012, Cle Elum, Washington, USA .


Galgani, L. and Engel, A. (2012) Studies on the sea-surface microlayer composition and the emission of primary organic aerosols from marine systems. [Poster] In: SOLAS Open Science Conference. , 07. - 10.05.2012, Cle Elum, Washington, USA .


Cisternas-Nuevo, C., Lee, C. and Engel, A. (2011) Measurements of proteinaceous and polysaccharide-rich particles produced by bubbling phytoplankton exduates. [Poster] In: ASLO Aquatic Sciences Meeting. , 13.-18.02.2011, San Juan, Puerto Rico, USA .


Czerny, J., Bellerby, R., Boxhammer, T. , Engel, A. , Ludwig, A., Nachtigall, K., Nondal, G., Silyakova, A., Sswat, M. and Riebesell, U. (2011) Element budgets in an Arctic mesocosm CO2 perturbation study. [Poster] In: EGU General Assembly 2011. , 03.-08.04.2011, Vienna, Austria .


Galgani, L. and Engel, A. (2011) The C-cycle on ocean’s surface. Insights to the composition of the sea surface microlayer. [Poster] In: AEHMS - Aquatic Ecosystems Health and Management Society Conference. , 13.-15.06.2011, Siena, Italy .


Galgani, L. and Engel, A. (2011) Global change and C-cycle at the air-sea interface: the sea surface microlayer and marine aerosol emission. [Poster] In: SOLAS Summer School. , 29.08-10.09.2011, Cargese, Corsica, France .


Galgani, L. and Engel, A. (2011) The sea surface microlayer and marine aerosol emission. [Poster] In: 8. Japanese-German Frontiers of Science Symposium 2011 (JaGFOS). , 27.-30.10.2011, Tokyo, Japan .


Harlay, J., Chou, L., De Bodt, C., Van Oostende, N., Piontek, J., Engel, A. , Sabbe, K., Groom, S. and Borges, A. V. (2011) Biogeochemistry and carbon mass balance of a coccolithophore bloom in the northern Bay of Biscay (June 2006). [Poster] In: EGU General Assembly 2011. , 03.-08.04.2011, Vienna, Austria .


Peeken, I., Nöthig, E., Bauerfeind, E., Bracher, A., Cherkasheva, A., Engel, A. , Gaebler-Schwarz, S., Kilias, E., Kraft, A., Metfies, K., Niehoff, B., Pfaff, S. and Wurst, M. (2011) Plankton Ecology and Biogeochemistry in a Changing Arctic Ocean (PEBCAO), first results from the AWI HAUSGARTEN area (Fram Strait). [Poster] In: Arctic Frontiers – Arctic Tipping Points. , 23.01.-28.01.2011, Tromsø, Norway .


Endres, S. , Unger, J., Wannicke, N. and Engel, A. (2010) Effect of ocean acidification on production and decomposition of exudates - first results from a joint batch experiment. [Poster] In: EPOCA, BIOACID, UKOARP Annual Meeting 2010. , 27.09.-30.09.2010, Bremerhaven, Germany .


Wannicke, N., Unger, J., Endres, S. , Nausch, M., Grossart, H. P., Voss, M. and Engel, A. (2010) How elevated pCO2 and DOM derived from Nodularia grown at different pCO2 level modify bacterial growth and activity - first results from a joint laboratory study. [Poster] In: EPOCA, BIOACID, UKOARP Annual Meeting 2010. , 27.09.-30.09.2010, Bremerhaven, Germany .


Wannick, N., Unger, J., Endres, S. , Nausch, M., Nausch, G., Grossart, H. P., Voss, M. and Engel, A. (2010) Growth and production of Nodularia spumigena under different CO2 concentrations - First results from a joint laboratory study. [Poster] In: EPOCA, BIOACID, UKOARP Annual Meeting 2010. , 27.09.-30.09.2010, Bremerhaven, Germany .


Wurst, M., Händel, N., Nöthig, E. M. and Engel, A. (2010) Potential effects of sea surface warming and acidification on the aggregation of extracellular organic matter in Arctic ecosystems. [Poster] In: 13. International Symposium on Microbial Ecology, ISME-13. , 22.-27.08.2010, Seattle, USA .


Wurst, M., Händel, N., Nöthig, E. M. and Engel, A. (2010) Potential effects of sea surface warming and acidification on the aggregation of extracellular organic matter in Arctic ecosystems. [Poster] In: EPOCA, BIOACID, UKOARP Annual Meeting 2010. , 27.09.-30.09.2010, Bremerhaven, Germany .


Wurst, M., Händel, N., Nöthig, E. M., Bathmann, U. and Engel, A. (2010) Effects of temperature and CO2 on organic matter production and aggregation in Arctic ecosystems. [Poster] In: International Polar Year Oslo Science. , 8.-12.06.2010, Oslo, Norway .


Biermann, A. and Engel, A. (2009) Effect of CO2 on the properties and sinking velocity of aggregates of the coccolithophore Emiliania huxleyi.. [Poster] In: ASLO Aquatic Sciences Meeting. , 25.-30.01, Nice, France .


Chou, L., Harlay, J., De Bodt, C., Roevros, N., Borges, A. V., Suykens, K., Delille, B., Sabbe, K., Van Oostende, N., Engel, A. , Piontek, J., Borchard, C., Händel, N. and Groom, S. (2009) Role of pelagic calcification and export of carbonate production in climate change. [Poster] In: SOLAS Open Science Conference. , 16.-19.11.2009, Barcelona, Spain .


Engel, A. (2009) Effects of climate change on the emission of biogenic primary organic aerosols from marine systems. [Poster] In: SOPRAN Annual meeting 2009. , 19.-20.03.2009, Kiel, Germany .


Engel, A. , Biermann, A., Szlosek, J., Abramson, L. and Lee, C. (2009) Role of biogenic minerals in particle aggregation processes and potential sensitivities to ocean acidification. [Poster] In: ASLO Aquatic Sciences Meeting. , 25.-30.01.2009, Nice, France .


Händel, N., Piontek, J., Harlay, J., De Bodt, C., Chou, L. and Engel, A. (2009) Dynamics of polysaccharides and transparent exopolymer particles during a coccolithophore bloom in the Bay of Biscay. [Poster] In: ASLO Aquatic Sciences Meeting 2009. , 25.-30.01.2009, Nice, France .


Harlay, J., Borges, A. V., De Bodt, C., Van Oostende, N., Piontek, J., Suykens, K., Engel, A. , Sabbe, K., Groom, S. and Chou, L. (2009) Biogeochemistry and carbon budget during a coccolithophorid bloom in the northern Bay of Biscay (June 2006). [Poster] In: EGU General Assembly 2009. , 19.-24.04.2009, Vienna, Austria .


Piontek, J., Händel, N., Borchard, C., Lunau, M., Chou, L. and Engel, A. (2009) The significance of bacterial polysaccharide degradation for carbon export, today and in the future ocean. [Poster] In: ASLO Aquatic Sciences Meeting 2009. , 25.-30.01.2009, Nice, France .


Chou, L., Harlay, J., De Bodt, C., Roevros, N., Borges, A. V., Suykens, K., Delille, B., Sabbe, K., Van Oostende, N., Engel, A. , Piontek, J., Borchard, C., Händel, N., Schmidt, S. and Groom, S. (2008) Biogeochemical Investigations of Coccolithophore Blooms along the Continental Margin of the Northern Bay of Biscay: Highlights of the PEACE Project. [Poster] In: 2. International Symposium on the Ocean in a High-CO2 World. , 06.-09.10.2008, Monaco .


Engel, A. , Händel, N., Grossart, H. P., Wohlers, J. and Riebesell, U. (2008) Effects of increasing temperature on the production and molecular composition of DOM during an indoor-mesocosm experiment. [Poster] In: 5. AQUASHIFT-Workshop (in the framework of the DGL Annual Meeting). , 22.-26.09.2008, Konstanz, Germany .


Händel, N., Piontek, J., Wohlers, J., Riebesell, U. and Engel, A. (2008) Dynamics of dissolved neutral and acidic sugars in seawater. [Poster] In: ASLO Ocean Sciences Meeting. , 02.-07.03.2008, Orlando, USA .


Lunau, M., Wurst, M., Piontek, J., Grossart, H. P., Riebesell, U. and Engel, A. (2008) Potential effects of ocean acidification on microbial organic matter degradation during an offshore mesocosm experiment. [Poster] In: SOPRAN annual meeting 2008. , 11.-12.03.2008, Rostock/Warnemünde, Germany .


Lunau, M., Wurst, M., Piontek, J., Grossart, H. P., Riebesell, U. and Engel, A. (2008) Potential effects of ocean acidification on microbial organic matter degradation during an offshore mesocosm experiment. [Poster] In: ASLO Ocean Sciences Meeting. , 02.-07.03.2008, Orlando, USA .


Piontek, J., Händel, N., Lunau, M., Borchard, C. and Engel, A. (2008) Effects of ocean acidification on the bacterial degradation of organic matter. [Poster] In: 2. International Symposium on the Ocean in a High-CO2 World. , 06.-09.10.2008, Monaco .


Biermann, A. and Engel, A. (2007) Effect of CO2 on the properties and sinking velocity of aggregates of the coccolithophore Emiliania huxleyi. [Poster] In: 97. Jahrestagung der Geologischen Vereinigung e.V. = GV International Conference 2007 . , 01.-05.10.2007, Bremen, Germany .

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Engel, A. , Szlosek, J., Abramson, L., Liu, Z., Stewart, G., Hirschberg, D. and Lee, C. (2006) Importance of Calcareous Shells in Aggregate Formation and Particle Decomposition for the Coccolithophorid Emiliania Huxleyi. Open Access [Poster] In: AGU Ocean Sciences Meeting 2006. , 20.02.-24.02.2006, Honolulu, Hawaii, USA .


Piontek, J., Langer, G., Händel, N., Riebesell, U. and Engel, A. (2006) Effects of rising temperature on the microbial decomposition of sinking organic material in the surface ocean. [Poster] In: ESSP Global Change Open Science Conference. , 09.-12.11.2006, Beijing, China .


Piontek, J., Langer, G., Händel, N., Riebesell, U. , Wohlers, J. and Engel, A. (2006) Effects of rising temperature on the decomposition of phytoplankton aggregates . [Poster] In: 3. AQUASHIFT Workshop. , 14.-16.11.2006, Kiel, Germany .


Engel, A. , Langer, G., Piontek, J., Händel, N. and Szlosek, J. (2005) Wie verändert sich die Biogeochemie des Ozeans im Anthropozaen?. [Poster] In: Wissenswerte 2005. , 28.-30.11.2005, Bremen, Germany .


Benthien, A., Riebesell, U. , Engel, A. , Zondervan, I., Hefter, J., Delille, B., Harlay, J. and Jacquet, S. (2004) Alkenone carbon isotopes during a bloom of Emiliania huxleyi: Effects of CO2 concentration and production. [Poster] In: 8. International Conference on Paleoceanography, ICP 8. , 05.09.-10.09.2004, Biarritz, France .

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Riebesell, U. , Allgaier, M., Avgoustidi, V., Bellerby, R., Carbonnel, V., Chou, L., Delille, B., Egge, J., Engel, A. , Grossart, H. P., Huonnic, P., Jansen, S., Johannessen, T., Joint, I., Krigstad, S., Lovdal, T., Martin-Jézéquel, V., Moros, C., Mühling, M., Nightingale, M., Passow, U., Rost, B., Schulz, K., Skjelvan, I., Terbrüggen, A. and Trimborn, S. (2004) Pelagic Ecosystems in a High CO2 Ocean: the Mesocosm Approach. [Poster] In: SOLAS Open Science Conference 2004. , 13.-16.10.2004, Halifax, Canada .


Benthien, A., Zondervan, I., Riebesell, U. , Engel, A. , Hefter, J., Delille, B., Harlay, J. and Jacquet, S. (2003) Alkenone carbon isotopes during a bloom of Emiliania huxleyi: Effects of CO2 concentration and production. [Poster] In: EGS-AGU-EUG Joint Assembly 2003. , 06.-11.04.2003, Nice, France .


Engel, A. , Heeman, C. and Schneider, U. (2003) Influence of CO2 on the production of transparent exopolymer particles (TEP) by marine phytoplankton. [Poster] In: IGBP/SCOR Open Science Meeting on Ocean Biogeochemistry and Ecosystems Analysis. , 07.-10.01.2003, Paris, France .


Schneider, B., Engel, A. and Schlitzer, R. (2003) Effects of depth and CO2-dependent C:N ratios of POM on the marine carbon cycle. [Poster] In: EGS-AGU-EUG Joint Assembly 2003. , 06.-11.04.2003, Nice, France .


Thoms, S., Engel, A. , Riebesell, U. and Zondervan, I. (2003) Modeling the aggregation of dissolved polysaccharides during a marine phytoplankton bloom. [Poster] In: IGBP/SCOR Open Science Meeting on Ocean Biogeochemistry and Ecosystems Analysis. , 07.-10.01.2003, Paris, France .


Engel, A. and Passow, U. (2000) Contribution of Transparent Exopolymer Particles (TEP) to the marine carbon cycle. [Poster] In: International JGOFS Workshop Biogeochemical Cycles: German contributions to the International Joint Global Ocean Flux Study. , 18.-21.09.2000, Bremen, Germany .


Passow, U. and Engel, A. (2000) Decomposition of diatom frustules. Comparison between suspended and aggregated materia. [Poster] In: International JGOFS Workshop Biogeochemical Cycles: German contributions to the International Joint Global Ocean Flux Study. , 18.-21.09.2000, Bremen, Germany .


Engel, A. and Passow, U. (1999) The Role of Aggregation for the Dissolution of Diatom Frustules. [Poster] In: ASLO Aquatic Sciences Meeting 1999. , 01.-05.02.1999, Santa Fe, USA .


Krembs, C. and Engel, A. (1998) Dynamics of transparent exopolymer particles (TEP) during summer 1995 in the pack ice-covered area of the Laptev Sea. [Poster] In: AGU/ASLO 1998 Ocean Sciences Meeting. , 09.-13.2.1998, San Diego, USA .

Theses - published by a publisher

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Engel, A. (1998) Bildung, Zusammensetzung und Sinkgeschwindigkeiten mariner Aggregate. Open Access (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 145 pp. . Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 300 . DOI 10.3289/IFM_BER_300.

Theses - not published by a publisher

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Engel, A. (1995) Der Einfluß von chemischen Reizen und Licht auf Phytoplankton : eine experimentelle Untersuchung. (Diploma thesis), Christian-Albrechts-Universität, Kiel, Kiel, Germany, 88 pp.

Reports - Cruise Reports

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Körtzinger, A. , Andrae, A., Baschek, B., Becker, K., Behr, H. D., Blandfort, D., Calil, P., Carrasco, R., Dengler, M. , Devresse, Q., Engel, A. , Fiedler, B., Fischer, G., Fischer, T. , Flintrop, C., Fomba, K. W., Golde, S., Hahn, T., Hauss, H. , Hepach, H. , Heymann, K., Hieronymi, M. , Horstmann, J., Hufnagel, L., Iversen, M. H., Karstensen, J. , Katzenmeier, S., Knudsen, J., Kock, T., Krahmann, G. , Krasemann, H., Merckelbach, L., Moradi, N., Nothof, M., Paulsen, M., Raeke, A., Röttgers, R., Schultze, L. and Stoeck, T. (2020) Eddy Study to Understand Physical-Chemical-Biological Coupling and the Biological Carbon Pump as a Function of Eddy Type off West Africa, Cruise No. M160, 23.11.2019 - 20.12.2019, Mindelo (Cabo Verde) - Mindelo (Cabo Verde). Open Access . Gutachterpanel Forschungsschiffe, Bonn, Germany, 54 pp.

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Barthelmess, T., Loginova, A. N. , Grosse, J. and Engel, A. (2019) Practical at Sea: M. Sc. Advanced Course in Biological Oceanography, Alkor Report AL523.2 [AL523/2], 01.07. – 03.07.2019, Kiel (Germany) – Kiel (Germany) BiolOcPrac (GPF 19-1_127). Open Access . Alkor-Berichte, AL523-2 . GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, 22 pp. DOI 10.3289/CR_AL523-2.

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Engel, A. (2015) Short Report Alkor Cruise AL 458 [AL458] (Kiel-Riga-Kiel), 03.06.2015-19.06.2015 . . GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, 18 pp.

Reports - other reports

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Matthews, H. D., Rogelj, J., Redman, A., Mengis, N. , Hebden, S., Nolan, R., Hepach, H. , Donges, J. F., Martin, M. A., Büchs, M., Edwards, C., Lorek, S., Redman, A., Green, J. F., Pihl, E., Fuss, S., Gärtner, J., Lotze, H., Bowen, K., Sioen, G. B., Woodcock, J., Alcaraz Sedra, O., Bastos, A., Bauer, N., Bertram, C., Blenckner, T., Brando, P. M., Brodie Rudolph, T., Dasgupta, P., Donkor, F. K., Duan, H., Duarte, C. M., Engel, A. , Gettelman, A., Girardin, C. A. J., Golledge, N. R., Grose, M. R., Hashizume, M., Hirota, M., Kojima, S., Lele, S., McCauley, D., M'ebratu, D., Rahmstorf, S., Reid, C. E., Saunois, M., Spangenberg, J. H., Sterner, T. N. S., Stevens, N., Thonicke, K., Tian, H. and Winkelmann, R. and Future Earth, The Earth League, WCRP (2021) 10 New Insights in Climate Science 2021. Open Access . UNSPECIFIED, Stockholm, Sweden, 53 pp. DOI 10.5281/zenodo.5639539.

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Ambsdorf, J., Engel, A. , Grabe, J., Kronfeld-Goharani, U., Latif, M. , Lenz, M., Lotze, H., Matz-Lück, N., Müller, A., Neumann, B., Ott, K., Petersen, S. , Quaas, M., Reusch, T. B. H. , Riebesell, U. , Schulz, C., Unmüßig, B., Unger, S., Visbeck, M. , Wahl, M. , Wallmann, K. J. G. and Wodtke, L. and Heinrich-Böll-Stiftung Schleswig-Holstein, Heinrich-Böll-Stifung (Bundesstiftung), Kieler Exzellenzcluster Ozean der Zukunft, Le Monde diplomatique (2017) Meeresatlas: Daten und Fakten über unseren Umgang mit dem Ozean. Open Access , ed. by Bähr, U., Kronfeld-Goharani, U. and Wiebe, P.. Heinrich Böll Stiftung, Berlin, Germany, 50 pp.

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Ambsdorf, J., Engel, A. , Grabe, J., Kronfeld-Goharani, U., Latif, M. , Lenz, M., Lotze, H., Matz-Lück, N., Müller, A., Neumann, B., Ott, K., Petersen, S. , Quaas, M., Reusch, T. B. H. , Riebesell, U. , Schulz, C., Unmüßig, B., Unger, S., Visbeck, M. , Wahl, M. , Wallmann, K. J. G. and Wodtke, L. and Heinrich-Böll-Stiftung Schleswig-Holstein, Heinrich-Böll-Stifung (Bundesstiftung), Kieler Exzellenzcluster Ozean der Zukunft, Le Monde diplomatique (2017) Ocean Atlas : facts and figures about our relationship with the ocean. Open Access , ed. by Bähr, U., Kronfeld-Goharani, U. and Wiebe, P.. Heinrich Böll Stiftung, Berlin, Germany, 50 pp.

This list was generated on Sun May 19 01:52:00 2024 CEST.