Role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone
15 pages, 7 figures.-- Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted; authors and original publication must be credited The dynamics of individual phytoplankton species are often more variable than predicted for their functional gro...
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Online Access: | http://hdl.handle.net/10261/166292 https://doi.org/10.3354/meps12542 |
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ftcsic:oai:digital.csic.es:10261/166292 2024-02-11T10:06:44+01:00 Role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone Otero, Jaime Bode, Antonio Álvarez-Salgado, Xosé Antón Varela, Manuel 2018 http://hdl.handle.net/10261/166292 https://doi.org/10.3354/meps12542 en eng Inter Research Publisher's version https://doi.org/10.3354/meps12542 Sí Marine Ecology Progress Series 596: 33-47 (2018) 0171-8630 http://hdl.handle.net/10261/166292 doi:10.3354/meps12542 1616-1599 open Phytoplankton Cell size Functional traits Sea surface temperature Nutrients Upwelling NW Iberian margin artículo http://purl.org/coar/resource_type/c_6501 2018 ftcsic https://doi.org/10.3354/meps12542 2024-01-16T10:31:10Z 15 pages, 7 figures.-- Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted; authors and original publication must be credited The dynamics of individual phytoplankton species are often more variable than predicted for their functional groups. This observation is poorly understood in highly perturbed coastal systems. Trends in the abundance of 54 phytoplankton species spanning a volumetric size range from ~102 to ~105 μm3 in shelf waters of the NW Iberian upwelling system since the late 1980s were modelled as a function of environmental variables. Functional traits were assessed for their ability to explain the across-species changes in occurrence and abundance due to the environmental drivers. Species-specific responses to the environment were heterogeneous, precluding any generalisation by taxonomic groups, although these responses were partially related to cell size. Smaller species showed a high probability of occurrence and higher abundance under high nitrate concentration in the euphotic layer, pointing to a major role of the upwelling of Eastern North Atlantic Central Water but also to inputs of nutrients mineralised over the shelf. However, cell size explained only a small amount of the variability in the individual species’ responses to the environment. Growth rate and maximum rate of nitrogen uptake normalised to cell size provided additional explanation for the individual species’ responses to the environmental drivers. Fast-growing species, though less efficient in taking up upwelled nutrients, thrived in favourable upwelling conditions. These results support the dominance of species of intermediate size during blooms in this upwelling region, and suggest that variability in functional traits among species rather than cell size alone affects the response of phytoplankton to environmental changes in upwelling ecosystems. Project RADIALES conducted and funded by the Instituto Español de Oceanografía (www.seriestemporales-ieo.com). J.O. ... Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Marine Ecology Progress Series 596 33 47 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Phytoplankton Cell size Functional traits Sea surface temperature Nutrients Upwelling NW Iberian margin |
spellingShingle |
Phytoplankton Cell size Functional traits Sea surface temperature Nutrients Upwelling NW Iberian margin Otero, Jaime Bode, Antonio Álvarez-Salgado, Xosé Antón Varela, Manuel Role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone |
topic_facet |
Phytoplankton Cell size Functional traits Sea surface temperature Nutrients Upwelling NW Iberian margin |
description |
15 pages, 7 figures.-- Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted; authors and original publication must be credited The dynamics of individual phytoplankton species are often more variable than predicted for their functional groups. This observation is poorly understood in highly perturbed coastal systems. Trends in the abundance of 54 phytoplankton species spanning a volumetric size range from ~102 to ~105 μm3 in shelf waters of the NW Iberian upwelling system since the late 1980s were modelled as a function of environmental variables. Functional traits were assessed for their ability to explain the across-species changes in occurrence and abundance due to the environmental drivers. Species-specific responses to the environment were heterogeneous, precluding any generalisation by taxonomic groups, although these responses were partially related to cell size. Smaller species showed a high probability of occurrence and higher abundance under high nitrate concentration in the euphotic layer, pointing to a major role of the upwelling of Eastern North Atlantic Central Water but also to inputs of nutrients mineralised over the shelf. However, cell size explained only a small amount of the variability in the individual species’ responses to the environment. Growth rate and maximum rate of nitrogen uptake normalised to cell size provided additional explanation for the individual species’ responses to the environmental drivers. Fast-growing species, though less efficient in taking up upwelled nutrients, thrived in favourable upwelling conditions. These results support the dominance of species of intermediate size during blooms in this upwelling region, and suggest that variability in functional traits among species rather than cell size alone affects the response of phytoplankton to environmental changes in upwelling ecosystems. Project RADIALES conducted and funded by the Instituto Español de Oceanografía (www.seriestemporales-ieo.com). J.O. ... |
format |
Article in Journal/Newspaper |
author |
Otero, Jaime Bode, Antonio Álvarez-Salgado, Xosé Antón Varela, Manuel |
author_facet |
Otero, Jaime Bode, Antonio Álvarez-Salgado, Xosé Antón Varela, Manuel |
author_sort |
Otero, Jaime |
title |
Role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone |
title_short |
Role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone |
title_full |
Role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone |
title_fullStr |
Role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone |
title_full_unstemmed |
Role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone |
title_sort |
role of functional trait variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone |
publisher |
Inter Research |
publishDate |
2018 |
url |
http://hdl.handle.net/10261/166292 https://doi.org/10.3354/meps12542 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Publisher's version https://doi.org/10.3354/meps12542 Sí Marine Ecology Progress Series 596: 33-47 (2018) 0171-8630 http://hdl.handle.net/10261/166292 doi:10.3354/meps12542 1616-1599 |
op_rights |
open |
op_doi |
https://doi.org/10.3354/meps12542 |
container_title |
Marine Ecology Progress Series |
container_volume |
596 |
container_start_page |
33 |
op_container_end_page |
47 |
_version_ |
1790604646686916608 |