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  Disentangling diverse responses to climate change among global marine ecosystem models

Heneghan, R. F., Galbraith, E., Blanchard, J. L., Harrison, C., Barrier, N., Bulman, C., Cheung, W., Coll, M., Eddy, T. D., Erauskin-Extramiana, M., Everett, J. D., Fernandes-Salvador, J. A., Gascuel, D., Guiet, J., Maury, O., Palacios-Abrantes, J., Petrik, C. M., Pontavice, H. d., Richardson, A. J., Steenbeek, J., Tai, T. C., Volkholz, J., Woodworth-Jefcoats, P. A., Tittensor, D. P. (2021): Disentangling diverse responses to climate change among global marine ecosystem models. - Progress in Oceanography, 198, 102659.
https://doi.org/10.1016/j.pocean.2021.102659

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Heneghan, Ryan F., Autor
Galbraith, Eric, Autor
Blanchard, Julia L., Autor
Harrison, Cheryl, Autor
Barrier, Nicolas, Autor
Bulman, Catherine , Autor
Cheung, William , Autor
Coll, Marta , Autor
Eddy, Tyler D. , Autor
Erauskin-Extramiana, Maite , Autor
Everett, Jason D., Autor
Fernandes-Salvador, Jose A. , Autor
Gascuel, Didier , Autor
Guiet, Jerome, Autor
Maury, Olivier , Autor
Palacios-Abrantes, Juliano , Autor
Petrik, Colleen M. , Autor
Pontavice, Hubert du , Autor
Richardson, Anthony J., Autor
Steenbeek, Jeroen , Autor
Tai, Travis C., AutorVolkholz, Jan1, Autor              Woodworth-Jefcoats, Phoebe A. , AutorTittensor, Derek P. , Autor mehr..
Affiliations:
1Potsdam Institute for Climate Impact Research, ou_persistent13              

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Schlagwörter: Climatic change Modelling Fishery oceanography Marine ecology FishMIP Structural uncertainty
 Zusammenfassung: Climate change is warming the ocean and impacting lower trophic level (LTL) organisms. Marine ecosystem models can provide estimates of how these changes will propagate to larger animals and impact societal services such as fisheries, but at present these estimates vary widely. A better understanding of what drives this inter-model variation will improve our ability to project fisheries and other ecosystem services into the future, while also helping to identify uncertainties in process understanding. Here, we explore the mechanisms that underlie the diversity of responses to changes in temperature and LTLs in eight global marine ecosystem models from the Fisheries and Marine Ecosystem Model Intercomparison Project (FishMIP). Temperature and LTL impacts on total consumer biomass and ecosystem structure (defined as the relative change of small and large organism biomass) were isolated using a comparative experimental protocol. Total model biomass varied between −35% to +3% in response to warming, and -17% to +15% in response to LTL changes. There was little consensus about the spatial redistribution of biomass or changes in the balance between small and large organisms (ecosystem structure) in response to warming, an LTL impacts on total consumer biomass varied depending on the choice of LTL forcing terms. Overall, climate change impacts on consumer biomass and ecosystem structure are well approximated by the sum of temperature and LTL impacts, indicating an absence of nonlinear interaction between the models’ drivers. Our results highlight a lack of theoretical clarity about how to represent fundamental ecological mechanisms, most importantly how temperature impacts scale from individual to ecosystem level, and the need to better understand the two-way coupling between LTL organisms and consumers. We finish by identifying future research needs to strengthen global marine ecosystem modelling and improve projections of climate change impacts.

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 Datum: 2021-07-192021-01-142021-08-032021-08-092021-11-10
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.pocean.2021.102659
PIKDOMAIN: RD3 - Transformation Pathways
Organisational keyword: RD3 - Transformation Pathways
MDB-ID: No data to archive
OATYPE: Hybrid Open Access
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Titel: Progress in Oceanography
Genre der Quelle: Zeitschrift, SCI, Scopus
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 198 Artikelnummer: 102659 Start- / Endseite: - Identifikator: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/progress-in-oceanography
Publisher: Elsevier