Role of functional traits variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone.
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 i...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter-Research Science Center
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/10508/15142 https://www.int-res.com/articles/meps_oa/m596p033.pdf https://doi.org/10.3354/meps12542 |
id |
ftieo:oai:repositorio.ieo.es:10508/15142 |
---|---|
record_format |
openpolar |
spelling |
ftieo:oai:repositorio.ieo.es:10508/15142 2023-06-11T04:14:52+02:00 Role of functional traits variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone. Otero, J. (Jaime) Bode, A. (Antonio) Álvarez-Salgado, X.A. (Xosé Antón) Varela-Rodríguez, M. (Manuel) 2018 http://hdl.handle.net/10508/15142 https://www.int-res.com/articles/meps_oa/m596p033.pdf https://doi.org/10.3354/meps12542 eng eng Inter-Research Science Center Centro Oceanográfico de Vigo VIGO A CORUÑA 0171-8630 https://www.int-res.com/articles/meps_oa/m596p033.pdf http://hdl.handle.net/10508/15142 doi:10.3354/meps12542 open access Phytoplankton Cell size Functional traits Sea surface temperature Nutrients Upwelling NW Iberian margin research article 2018 ftieo https://doi.org/10.3354/meps12542 2023-05-02T23:49:31Z 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. Article in Journal/Newspaper North Atlantic Instituto Español de Oceanografía: e-IEO Marine Ecology Progress Series 596 33 47 |
institution |
Open Polar |
collection |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
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, J. (Jaime) Bode, A. (Antonio) Álvarez-Salgado, X.A. (Xosé Antón) Varela-Rodríguez, M. (Manuel) Role of functional traits 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 |
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. |
format |
Article in Journal/Newspaper |
author |
Otero, J. (Jaime) Bode, A. (Antonio) Álvarez-Salgado, X.A. (Xosé Antón) Varela-Rodríguez, M. (Manuel) |
author_facet |
Otero, J. (Jaime) Bode, A. (Antonio) Álvarez-Salgado, X.A. (Xosé Antón) Varela-Rodríguez, M. (Manuel) |
author_sort |
Otero, J. (Jaime) |
title |
Role of functional traits variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone. |
title_short |
Role of functional traits variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone. |
title_full |
Role of functional traits variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone. |
title_fullStr |
Role of functional traits variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone. |
title_full_unstemmed |
Role of functional traits variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone. |
title_sort |
role of functional traits variability in the response of individual phytoplankton species to changing environmental conditions in a coastal upwelling zone. |
publisher |
Inter-Research Science Center |
publishDate |
2018 |
url |
http://hdl.handle.net/10508/15142 https://www.int-res.com/articles/meps_oa/m596p033.pdf https://doi.org/10.3354/meps12542 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
0171-8630 https://www.int-res.com/articles/meps_oa/m596p033.pdf http://hdl.handle.net/10508/15142 doi:10.3354/meps12542 |
op_rights |
open access |
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_ |
1768371219531300864 |