publications

Number of items: 254.

Articles in a Scientific Journal - peer-reviewed


Bergen, B., Endres, S., Engel, A., Zark, M., Dittmar, T., Sommer, U. and Jürgens, K. (Submitted) Acidification and warming affect prominent bacteria in two seasonal phytoplankton bloom mesocosms Environmental Microbiology .

[img]

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 Polar Research, 34 (23349). DOI 10.3402/polar.v34.23349.

[img] [img]

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 Biogeosciences (BG), 12 . pp. 6897-6914. DOI 10.5194/bg-12-6897-2015.

[img]

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 Biogeosciences (BG), 12 . pp. 5647-5665. DOI 10.5194/bg-12-5647-2015.

[img]

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 Limnology and Oceanography, 60 (4). pp. 1392-1410. DOI 10.1002/lno.10112.

[img]

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.

[img]

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 Marine Ecology Progress Series, 522 . pp. 49-65. DOI 10.3354/meps11148.

[img]

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 Journal of Geophysical Research - Oceans, 119 (11). pp. 7911-7924. DOI 10.1002/2014JC010188.

[img] [img]

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.

[img]

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 Marine Ecology Progress Series, 507 . pp. 15-30. DOI 10.3354/meps10824.

[img]

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 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 PLoS ONE, 9 (6). e99228. DOI 10.1371/journal.pone.0099228.

[img]

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.

[img]

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

[img]

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.

[img]

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.

[img]

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 Biogeosciences (BG), 10 . pp. 1893-1908. DOI 10.5194/bg-10-1893-2013.

[img]

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 PLoS ONE, 8 (10). e76599. DOI 10.1371/journal.pone.0076599.

[img]

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.

[img]

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 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 Biogeosciences (BG), 10 . pp. 567-582. DOI 10.5194/bg-10-567-2013.

[img]

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 Biogeosciences (BG), 10 (3). pp. 1291-1308. DOI 10.5194/bg-10-1291-2013.

[img]

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 Biogeosciences (BG), 10 . pp. 297-314. DOI 10.5194/bg-10-297-2013.

[img]

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 Biogeosciences (BG), 10 . pp. 161-180. DOI 10.5194/bg-10-161-2013.

[img]

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 Biogeosciences (BG), 10 . pp. 4847-4859. DOI 10.5194/bg-10-4847-2013.

[img]

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 Biogeosciences (BG), 10 . pp. 181-191. DOI 10.5194/bg-10-181-2013.

[img] [img]

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 Biogeosciences (BG), 10 . pp. 1483-1499. DOI 10.5194/bg-10-1483-2013.

[img]

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

[img]

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 Biogeosciences (BG), 9 (8). pp. 2973-2988. DOI 10.5194/bg-9-2973-2012.

[img]

Wohlers, 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.

[img]

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.

[img]

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.


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.

[img]

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 Geophysical Research Letters, 38 (8). DOI 10.1029/2011GL047346.


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) Journal of Plankton Research, 33 (11). pp. 1719-1735. DOI 10.1093/plankt/fbr069.

[img]

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 Atmospheric Chemistry and Physics, 10 (6). pp. 2655-2662. DOI 10.5194/acp-10-2655-2010.

[img]

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

[img]

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 Biogeosciences (BG), 6 . pp. 877-885.


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.


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.


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.

[img]

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.

[img]

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 Atmospheric Chemistry and Physics, 9 (2). pp. 413-442. DOI 10.5194/acp-9-413-2009.

[img]

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.

[img] [img]

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.

[img]

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) Biogeosciences (BG), 5 (2). pp. 509-521. DOI 10.5194/bg-5-509-2008.

[img]

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.

[img]

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.

[img] [img]

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.

[img]

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.

[img]

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 Biogeosciences (BG), 4 (4). pp. 433-454. DOI 10.5194/bg-4-433-2007.

[img]

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.

[img]

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.

[img]

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.

[img]

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.

[img]

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 Global Biogeochemical Cycles, 18 (2). DOI 10.1029/2003GB002184.


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.

[img]

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.

[img]

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.

[img]

Engel, A. and Passow, U. (2001) Carbon and nitrogen content of transparent exopolymer particles (TEP) in relation to their Alcian Blue adsorption Marine Ecology Progress Series, 219 . pp. 1-10. DOI 10.3354/meps219001.

[img]

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

Articles in a Scientific Journal - without review

[img]

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 Atmospheric Chemistry and Physics Discussions . pp. 1-44. DOI 10.5194/acp-2016-39.

[img]

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., Neulinger, S. C., Pahlow, M., Riebesell, U., Schunck, H., Thomsen, S. and Wagner, H. (2015) Water column biogeochemistry of oxygen minimum zones in the eastern tropical North Atlantic and eastern tropical South Pacific Oceans Biogeosciences Discussions, 12 (6). pp. 4495-4556. DOI 10.5194/bgd-12-4495-2015.


Galgani, L. and Engel, A. (2012) The ocean has a gel-like skin made of proteins SOLAS Newsletter, 14 .

[img]

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

Book chapters

[img]

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) 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.

[img]

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.


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 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.

[img]

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


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.


Engel, A., Barcelos e Ramos, J., Geider, R., Hutchins, D., Lee, C., Rost, B., Röttgers, R. and Thingstad, F. (2010) Production and export of organic matter 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.


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

[img]

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 .


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

Presentations


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 .

[img]

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 .

[img]

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) 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 .


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 .


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) Impact of ocean acidification on microbial degradation of organic matter [Talk] In: BIOACID Annual Meeting 2011, 26.-30.09.2011, Bremen, 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 .


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 .


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 .


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 .

[img]

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 .

[img]

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 [Talk] In: EPOCA, BIOACID, UKOARP Annual Meeting, 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: 13th ISME Symposium, 22.-27.08.2010, Seattle, USA .

[img]

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: EPOCA, BIOACID, UKOARP Annual Meeting, 27.09.-30.09.2010, Bremerhaven .


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, 02.2008, Brussels, Belgium .

[img]

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, 02.-07.03.2008, Orlando, FL, USA .

[img]

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 [Talk] In: ISME12 - 12th 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., 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., 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 24th 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 .

[img]

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, 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, 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, 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, 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, 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: 8th 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


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 .

[img]

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 .

[img]

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 .

[img]

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 .

[img]

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, 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, 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, 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, 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 .


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 .


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 .


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: 2nd 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: 2nd 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 .

[img]

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 [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 .

[img]

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, 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, 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

[img]

Engel, A. (1998) Bildung, Zusammensetzung und Sinkgeschwindigkeiten mariner Aggregate (Doctoral thesis/PhD), 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


Engel, A. (1998) Bildung, Zusammensetzung und Sinkgeschwindigkeiten mariner Aggregate (Doctoral thesis/PhD), Christian-Albrechts-Universität, Kiel, Germany, 145 pp.

Reports - Cruise Reports

[img]

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.

This list was generated on Sun May 29 06:49:42 2016 CEST.