Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model
Sensitivity to nonlinear equations may be a characteristic feature of biological models, particularly those that are complex. A complex marine ecosystem model (PlankTOM5.2) that incorporates multiple plankton functional types (PFTs) was embedded in a global ocean general circulation model (OGCM) and...
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ftnerc:oai:nora.nerc.ac.uk:269779 2023-05-15T17:34:07+02:00 Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model Anderson, Thomas R. Gentleman, Wendy C. Sinha, Bablu 2010-10 http://nora.nerc.ac.uk/id/eprint/269779/ https://doi.org/10.1016/j.pocean.2010.06.003 unknown Anderson, Thomas R. orcid:0000-0002-7408-1566 Gentleman, Wendy C.; Sinha, Bablu. 2010 Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model. Progress In Oceanography, 87 (1-4). 201-213. https://doi.org/10.1016/j.pocean.2010.06.003 <https://doi.org/10.1016/j.pocean.2010.06.003> Publication - Article PeerReviewed 2010 ftnerc https://doi.org/10.1016/j.pocean.2010.06.003 2023-02-04T19:35:45Z Sensitivity to nonlinear equations may be a characteristic feature of biological models, particularly those that are complex. A complex marine ecosystem model (PlankTOM5.2) that incorporates multiple plankton functional types (PFTs) was embedded in a global ocean general circulation model (OGCM) and its performance assessed for four different formulations of multiple-prey zooplankton functional response: Michaelis–Menten (MM: Holling Type II), Sigmoidal (S: Holling Type III), Blackman (B) and Ivlev (Iv). Predictions of the four simulations were compared for the North Atlantic and North Pacific oceans. Remarkable differences were seen in both spatial extent and magnitude of predicted distributions of PFTs, as well as bulk properties, highlighting how the choice of functional response has a major impact on the resulting ecosystem structure. The range of average concentration of diatoms in surface waters was particularly marked, varying between 0.04 mg m−3 (B and MM) and 0.13 mg m−3 (S) in spring and between 0.01 mg m−3 (B) and 0.07 mg m−3 (S) in autumn. Differences in ecosystem structure affected predicted export flux, which varied by more than 25% among the simulations. Overall, our work highlights that accuracy is required in ecosystem formulation if reliable predictions are to be made when using complex marine ecosystem models embedded in OGCMs and therefore the need for further studies, with appropriate validation, that address structural sensitivity. Article in Journal/Newspaper North Atlantic Natural Environment Research Council: NERC Open Research Archive Ivlev ENVELOPE(156.303,156.303,52.975,52.975) Pacific Progress in Oceanography 87 1-4 201 213 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
description |
Sensitivity to nonlinear equations may be a characteristic feature of biological models, particularly those that are complex. A complex marine ecosystem model (PlankTOM5.2) that incorporates multiple plankton functional types (PFTs) was embedded in a global ocean general circulation model (OGCM) and its performance assessed for four different formulations of multiple-prey zooplankton functional response: Michaelis–Menten (MM: Holling Type II), Sigmoidal (S: Holling Type III), Blackman (B) and Ivlev (Iv). Predictions of the four simulations were compared for the North Atlantic and North Pacific oceans. Remarkable differences were seen in both spatial extent and magnitude of predicted distributions of PFTs, as well as bulk properties, highlighting how the choice of functional response has a major impact on the resulting ecosystem structure. The range of average concentration of diatoms in surface waters was particularly marked, varying between 0.04 mg m−3 (B and MM) and 0.13 mg m−3 (S) in spring and between 0.01 mg m−3 (B) and 0.07 mg m−3 (S) in autumn. Differences in ecosystem structure affected predicted export flux, which varied by more than 25% among the simulations. Overall, our work highlights that accuracy is required in ecosystem formulation if reliable predictions are to be made when using complex marine ecosystem models embedded in OGCMs and therefore the need for further studies, with appropriate validation, that address structural sensitivity. |
format |
Article in Journal/Newspaper |
author |
Anderson, Thomas R. Gentleman, Wendy C. Sinha, Bablu |
spellingShingle |
Anderson, Thomas R. Gentleman, Wendy C. Sinha, Bablu Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model |
author_facet |
Anderson, Thomas R. Gentleman, Wendy C. Sinha, Bablu |
author_sort |
Anderson, Thomas R. |
title |
Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model |
title_short |
Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model |
title_full |
Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model |
title_fullStr |
Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model |
title_full_unstemmed |
Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model |
title_sort |
influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model |
publishDate |
2010 |
url |
http://nora.nerc.ac.uk/id/eprint/269779/ https://doi.org/10.1016/j.pocean.2010.06.003 |
long_lat |
ENVELOPE(156.303,156.303,52.975,52.975) |
geographic |
Ivlev Pacific |
geographic_facet |
Ivlev Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Anderson, Thomas R. orcid:0000-0002-7408-1566 Gentleman, Wendy C.; Sinha, Bablu. 2010 Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model. Progress In Oceanography, 87 (1-4). 201-213. https://doi.org/10.1016/j.pocean.2010.06.003 <https://doi.org/10.1016/j.pocean.2010.06.003> |
op_doi |
https://doi.org/10.1016/j.pocean.2010.06.003 |
container_title |
Progress in Oceanography |
container_volume |
87 |
container_issue |
1-4 |
container_start_page |
201 |
op_container_end_page |
213 |
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1766132844603637760 |