Hill Cruz, Mariana

Dr. Mariana HILL CRUZ

FB2: Marine Biogeochemistry
FE Biogeochemical Modelling

Office:
Phone: +49 431 600-1544
Email: mhill-cruz(at)geomar.de

Address:
GEOMAR Helmholtz Centre for Ocean Research Kiel
Wischhofstr. 1-3
24148 Kiel
Germany

ORCID: 0000-0001-7766-3492
LinkedIn: mariana-hill

Research Interests

I am interested in modelling higher trophic levels (fish, macroinvertebrates and sharks) and how they interact with the environment. I use, among other tools, the multi-species model OSMOSE one-way coupled to biogeochemical models to study the Humboldt Current System and the Western Baltic Sea.

Education and Employment

Since 2022 Researcher, GEOMAR
2023 - 2024 3-month internship, Convention on the Conservation of Migratory Species of Wild Animals, UN Campus Bonn
2018 - 2022 Doctorate, Kiel University/ GEOMAR
2016 - 2018 MSc. Biological Oceanography, Kiel University/ GEOMAR
2014 - 2015 BSc. Marine Science, The University of Western Australia

Awards

BMT Oceanica Consulting Marine Science Prize

Projects

Current

2023 - 2025
Humboldt Tipping (Phase 2)
Funder: BMBF
Role: Principal Investigator
https://humboldt-tipping.org/

Completed

2018 - 2023
Humboldt Tipping (Phase 1) WP3
Funder: BMBF
Role: Doctoral Researcher

2018 - 2023
CUSCO (Coastal Upwelling System in a Changing Ocean) WP6
Funder: BMBF
Role: Doctoral Researcher
https://www.ebus-climate-change.de/cusco-wp6

Teaching

Courses at the Humboldt-tipping Spring School 2024:

Introduction to ocean upwelling systems, marine ecosystems, and climate change
Ocean-biogeochemical modeling and ecological modeling
Ecosystem modelling with OSMOSE
Writing scientific papers from start to finish
Visual communication of science: How to improve my plots and figures

I have also supervised Bachelor's and Master's interns. If you would like to do an internship or thesis on a topic related to ecosystem modelling, send me an e-mail ;)

Memberships

ICES Working Group on Integrative, Physical-biological and Ecosystem Modelling

Publications

Number of items: 19.

Articles in a Scientific Journal - peer-reviewed

[thumbnail of fsaf214_supplemental_files.zip]

Xue, T.

and Hill-Cruz, M.

(2025) Phenological mismatch contributes to anchoveta landings collapse under El Niño and climate change in the Peruvian upwelling system.

ICES Journal of Marine Science, 82 (12). Art.Nr. fsaf214. DOI 10.1093/icesjms/fsaf214.

Skogen, M. D., Aarflot, J. M., García-García, L. M., Ji, R., Ruiz-Villarreal, M., Almroth-Rosell, E., Belgrano, A., Benkort, D., Daewel, U., Edman, M., Friedland, R., Gao, S., Hill-Cruz, M.

, Hjøllo, S. S., Huret, M., Kellner, J. B., van Leeuwen, S., Lopez de Gamiz-Zearra, A., Maar, M., Mousing, E. A., Peck, M. A., Pastor Rollan, A., Sailley, S. F., Saraiva, S., Speakman, C., Troost, T. and Yumruktepe, V. C. (2024) Bridging the gap: integrating models and observations for better ecosystem understanding.

Marine Ecology Progress Series, 739 . pp. 257-268. DOI 10.3354/meps14616.

Hill-Cruz, M.

, Kriest, I.

and Getzlaff, J. (2023) Diving deeper: Mesopelagic fish biomass estimates comparison using two different models.

Frontiers in Marine Science, 10 . Art.Nr. 1121569. DOI 10.3389/fmars.2023.1121569.

[thumbnail of Hill_Cruz_Frenger_2022.pdf]

Hill-Cruz, M.

, Frenger, I.

, Getzlaff, J., Kriest, I.

, Xue, T.

and Shin, Y. J. (2022) Understanding the drivers of fish variability in an end-to-end model of the Northern Humboldt Current System.

Ecological Modelling, 472 . Art.Nr. 110097. DOI 10.1016/j.ecolmodel.2022.110097.

[thumbnail of bg-18-2891-2021-supplement.pdf]

Hill-Cruz, M.

, Kriest, I.

, Jose, Y. S.

, Kiko, R.

, Hauss, H.

and Oschlies, A.

(2021) Zooplankton mortality effects on the plankton community of the Northern Humboldt Current System: Sensitivity of a regional biogeochemical model.

Biogeosciences (BG), 18 (9). pp. 2891-2916. DOI 10.5194/bg-18-2891-2021.

Articles in a Scientific Journal - without review

Hill-Cruz, M.

, Xue, T.

, Hauschildt, J., Gutiérrez, M. and Kemena, T. P.

(Submitted) Supervised and unsupervised machine learning methods for modelling current and future habitat of Peruvian anchovy.

bioRxiv - the preprint server for biology . DOI 10.1101/2025.05.08.652876.

Articles in newspapers or magazines

[thumbnail of PICES-Press-2023-Vol31No1.pdf]

Kaplan, I., Hazen, E., Wildermuth, R., Koenigstein, S., Hill-Cruz, M.

, Pierre-Yves, H. and Muhling, B. (2023) SPF - Workshop 2: The Devil's in the Details of Using Species Distribution Models to Inform Multispecies and Ecosystem Models.

PICES Press, 31 (1). pp. 70-71.

Presentations

Hill, M.

, Xue, T.

, Hauschildt, J.

, Gutierrez, M. and Kemena, T. P.

(2025) Modelling the distribution of Peruvian anchovies under a changing climate. [Talk] In: Association for the Sciences of Limnology and Oceanography (ASLO) 2025 Aquatic Sciences Meeting. , 26.-31.03.2025, Charlotte, North Carolina, USA .

Hill, M.

, Scotti, M.

, MacNeil, L.

, Ito, M.

, Neumann, T. and Shin, Y. (2023) An OSMOSE configuration for the Western Baltic: First steps. [Talk] In: ICES Working Group on Integrative, Physical-biological and Ecosystem Modelling Annual Meeting. , 27.-30.03.2023, Copenhagen, Denmark .

Hill-Cruz, M.

(2022) Contrasting responses of anchovy and hake to fishing scenarios. [Talk] In: Open Science Conference on Eastern Boundary Upwelling Systems (EBUS): Past, Present and Future & Second International Conference on the Humboldt Current System. , 19-23.09.2022, Lima, Peru .

Hill-Cruz, M.

, Frenger, I.

, Kriest, I.

, Getzlaff, J., Xue, T.

and Shin, Y. (2022) Habitat impact on the interannual variability of fish in the northern Humboldt Current System. [Talk] In: Small Pelagic Fish: New Frontiers in Science for Sustainable Management. , 07.-11.11.2022, Lisbon, Portugal .

Hill Cruz, M.

, Hauschildt, J., Xue, T.

and Frenger, I.

(2022) Modelación dinámica del sistema de afloramiento costero del Perú. [Talk] In: Humboldt Tipping Final Symposium. , 27.09.2022, Lima, Peru .

Hill Cruz, M.

, Kriest, I.

and Getzlaff, J. (2022) How to model mesopelagic fish? Inter-comparison of two modelling approaches. [Talk] In: Ocean Sciences Meeting 2022. , 24.02.-04.03-2022, Online .

Hill, M.

(2022) Contrasting responses of Peruvian hake and anchovy to fishing scenarios in an ecosystem model. [Talk] In: YOUMARES12 Conference for Young Marine Researchers. , 11-14.10.2022, Berlin, Germany .

Hill Cruz, M.

, Kriest, I.

, Jose, Y. S.

and Oschlies, A.

(2019) Zooplankton mortality effects on the planktonic ecosystem of the upwelling system off Peru: A regional biogeochemical modelling approach. [Talk] In: Association for the Sciences of Limnology and Oceanography (ASLO) 2019 Aquatic Sciences Meeting. , 23.02.-02.03.2019, San Juan, Puerto Rico .

Hill-Cruz, M.

(2015) Spatial Variations in the Fish Assemblage Composition of Princess Royal Harbour. [Talk] In: Australasian Conference of Undergraduate Research. , 29.-30.09.2015, Perth, Australia .