The global ocean is an ecosystem: simulating marine life and fisheries

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Author(s) Christensen, Villy, Coll, Marta, Buszowski, Joe, Cheung, William W.L., Frölicher, Thomas, Steenbeek, Jeroen, Stock, Charles A., Watson, Reg A., Walters, Carl J.
Publication Type Journal Items, Publication Status: Published
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Title The global ocean is an ecosystem: simulating marine life and fisheries
Author(s) Christensen, Villy
Coll, Marta
Buszowski, Joe
Cheung, William W.L.
Frölicher, Thomas
Steenbeek, Jeroen
Stock, Charles A.
Watson, Reg A.
Walters, Carl J.
Journal or Series Title Global Ecology and Biogeography
Volume Number 24
Issue Number 5
Start Page 507
End Page 517
ISSN 1466-822X
1466-8238
Publisher Wiley-Blackwell
Publication Place Oxford
Publication Date 2015-05
Keyword(s) Ecosystem model
End-to-end model
Fish biomass trends
Fish catches
Food security
Model tuning
Seafood production
World ocean
Abstract AimThere has been considerable effort allocated to understanding the impact of climate change on our physical environment, but comparatively little to how life on Earth and ecosystem services will be affected. Therefore, we have developed a spatial-temporal food web model of the global ocean, spanning from primary producers through to top predators and fisheries. Through this, we aim to evaluate how alternative management actions may impact the supply of seafood for future generations. LocationGlobal ocean. MethodsWe developed a modelling complex to initially predict the combined impact of environmental parameters and fisheries on global seafood production, and initially evaluated the model's performance through hindcasting. The modelling complex has a food web model as core, obtains environmental productivity from a biogeochemical model and assigns global fishing effort spatially. We tuned model parameters based on Markov chain random walk stock reduction analysis, fitting the model to historic catches. We evaluated the goodness-of-fit of the model to data for major functional groups, by spatial management units and globally. ResultsThis model is the most detailed ever constructed of global fisheries, and it was able to replicate broad patterns of historic fisheries catches with best agreement for the total catches and good agreement for species groups, with more variation at the regional level. Main conclusionsWe have developed a modelling complex that can be used for evaluating the combined impact of fisheries and climate change on upper-trophic level organisms in the global ocean, including invertebrates, fish and other large vertebrates. The model provides an important step that will allow global-scale evaluation of how alternative fisheries management measures can be used for mitigation of climate change.
DOI 10.1111/geb.12281
Additional Notes Published online 2 Feburary 2015
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03731
Organisational Unit(s)
NEBIS System Number 002072617
Source Database ID WOS-000352530900001
SCOPUS-84926250063
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@article{Chrstnsn2015,
  author = "Christensen, Villy and Coll, Marta and Buszowski, Joe and Cheung, William W.L. and Fr{\"{o}}licher, Thomas and Steenbeek, Jeroen and Stock, Charles A. and Watson, Reg A. and Walters, Carl J.",
  title = "{T}he global ocean is an ecosystem: simulating marine life and fisheries",
  journal = "Global Ecology and Biogeography",
  year = 2015,
  volume = "24",
  number = "5",
  pages = "507--517",
  month = may,
}


E-Citations record created: Mon, 11 May 2015, 12:02:23 CET