Global relationship between phytoplankton diversity and productivity in the ocean
10 pages, 10 figures
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dig-icm-es-10261-1032962022-12-07T09:17:11Z Global relationship between phytoplankton diversity and productivity in the ocean Vallina, Sergio M. Follows, M.J. Dutkiewicz, Stephanie Montoya, José M. Cermeño, Pedro Loreau, Michel 10 pages, 10 figures The shape of the productivity-diversity relationship (PDR) for marine phytoplankton has been suggested to be unimodal, that is, diversity peaking at intermediate levels of productivity. However, there are few observations and there has been little attempt to understand the mechanisms that would lead to such a shape for planktonic organisms. Here we use a marine ecosystem model together with the community assembly theory to explain the shape of the unimodal PDR we obtain at the global scale. The positive slope from low to intermediate productivity is due to grazer control with selective feeding, which leads to the predator-mediated coexistence of prey. The negative slope at high productivity is due to seasonal blooms of opportunist species that occur before they are regulated by grazers. The negative side is only unveiled when the temporal scale of the observation captures the transient dynamics, which are especially relevant at highly seasonal latitudes. Thus selective predation explains the positive side while transient competitive exclusion explains the negative side of the unimodal PDR curve. The phytoplankton community composition of the positive and negative sides is mostly dominated by slow-growing nutrient specialists and fast-growing nutrient opportunist species, respectively. © 2014 Macmillan Publishers Limited This work was supported by a Marie Curie Fellowship (IOF—FP7) to S.M.V. from the European Union and was performed within the MIT’s Darwin Project (http://darwinproject.mit.edu/). M.J.F. and S.D. are grateful for support from the >Gordon and Betty Moore Foundation>. M.L. was supported by the TULIP Laboratory of Excellence (ANR-10-LABX-41). S.M.V., P.C. and J.M.M. are currently supported by >Ramon y Cajal> contracts from the Spanish Ministry of Economy and Competitiveness (MINECO) Peer Reviewed 2014-07-01 2014-10-14T08:30:28Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1038/ncomms5299 e-issn: 2041-1723 Nature Communications 5: 4299 (2014) http://hdl.handle.net/10261/103296 10.1038/ncomms5299 24980772 https://doi.org/10.1038/ncomms5299 open Nature Publishing Group |
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| description |
10 pages, 10 figures |
| format |
artículo |
| author |
Vallina, Sergio M. Follows, M.J. Dutkiewicz, Stephanie Montoya, José M. Cermeño, Pedro Loreau, Michel |
| spellingShingle |
Vallina, Sergio M. Follows, M.J. Dutkiewicz, Stephanie Montoya, José M. Cermeño, Pedro Loreau, Michel Global relationship between phytoplankton diversity and productivity in the ocean |
| author_facet |
Vallina, Sergio M. Follows, M.J. Dutkiewicz, Stephanie Montoya, José M. Cermeño, Pedro Loreau, Michel |
| author_sort |
Vallina, Sergio M. |
| title |
Global relationship between phytoplankton diversity and productivity in the ocean |
| title_short |
Global relationship between phytoplankton diversity and productivity in the ocean |
| title_full |
Global relationship between phytoplankton diversity and productivity in the ocean |
| title_fullStr |
Global relationship between phytoplankton diversity and productivity in the ocean |
| title_full_unstemmed |
Global relationship between phytoplankton diversity and productivity in the ocean |
| title_sort |
global relationship between phytoplankton diversity and productivity in the ocean |
| publisher |
Nature Publishing Group |
| url |
http://hdl.handle.net/10261/103296 |
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