Dr. Mariana HILL CRUZ


FB2: Marine Biogeochemistry
FE Biogeochemical Modelling

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

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

ORCID: 0000-0001-7766-3492

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


BMT Oceanica Consulting Marine Science Prize




2023 - 2025
Humboldt Tipping (Phase 2)
Funder: BMBF
Role: Principal Investigator


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


I have 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 ;)


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



Number of items: 10.

Articles in a Scientific Journal - peer-reviewed

[thumbnail of fmars-10-1121569.pdf]

Hill-Cruz, M. , Kriest, I. and Getzlaff, J. (2023) Diving deeper: Mesopelagic fish biomass estimates comparison using two different models. Open Access 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. Open Access Ecological Modelling, 472 . Art.Nr. 110097. DOI 10.1016/j.ecolmodel.2022.110097.

[thumbnail of bg-18-2891-2021.pdf] [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. Open Access Biogeosciences (BG), 18 (9). pp. 2891-2916. DOI 10.5194/bg-18-2891-2021.

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


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. , 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 .

[thumbnail of 00-Program-book.pdf]

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 .

[thumbnail of ACUR-2015-Program.pdf]

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 .

Conference posters

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Hill Cruz, M. , Kriest, I. and Jose, Y. S. (2021) Parameterisation of fish variability effects on biogeochemistry through zooplankton mortality: A sensitivity study for the Eastern Tropical South Pacific. [Poster] In: Advances in Marine Ecosystem Modelling Research (AMEMR) Virtual Conference 2021. , 12.-15.07.2021, Online .

Theses - not published by a publisher

[thumbnail of Thesis_MHC_for-publication.pdf]

Hill Cruz, M. (2022) From Biogeochemistry to Fisheries and Back Again : Modelling the Upwelling Ecosystem off Peru. Open Access (PhD/ Doctoral thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 183 pp.

This list was generated on Sun May 26 04:45:03 2024 CEST.