Temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean
The temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean was assessed on the basis of measurements of gross primary production (GPP), community respiration (CR) and net community production (NCP), as well as experimental assessments of the response of CR to tempera...
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ftcopernicus:oai:publications.copernicus.org:bg23930 2023-05-15T17:27:49+02:00 Temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean García-Corral, L. S. Barber, E. Regaudie-de-Gioux, A. Sal, S. Holding, J. M. Agustí, S. Navarro, N. Serret, P. Mozetič, P. Duarte, C. M. 2018-09-27 application/pdf https://doi.org/10.5194/bg-11-4529-2014 https://www.biogeosciences.net/11/4529/2014/ eng eng doi:10.5194/bg-11-4529-2014 https://www.biogeosciences.net/11/4529/2014/ eISSN: 1726-4189 Text 2018 ftcopernicus https://doi.org/10.5194/bg-11-4529-2014 2019-12-24T09:54:15Z The temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean was assessed on the basis of measurements of gross primary production (GPP), community respiration (CR) and net community production (NCP), as well as experimental assessments of the response of CR to temperature manipulations. Metabolic rates were measured at 68 stations along three consecutive longitudinal transects completed during the Malaspina 2010 Expedition, in three different seasons. Temperature gradients were observed in depth and at basin and seasonal scale. The results showed seasonal variability in the metabolic rates, the highest rates being observed during the spring transect. The overall mean integrated GPP / CR ratio was 1.39 ± 0.27 decreasing from winter to summer, and the NCP for the subtropical North Atlantic Ocean during the cruises exhibits net autotrophy (NCP > 0) in about two-thirds (66%) of the total sampled communities. Also, we reported the activation energies describing the temperature dependence of planktonic community metabolism, which was generally higher for CR than for GPP in the subtropical North Atlantic Ocean, as the metabolic theory of ecology predicts. Furthermore, we made a comparison of activation energies describing the responses to in situ temperature in the field (Ea CR = 1.64 ± 0.36 eV) and those derived experimentally by temperature manipulations (Ea CR = 1.45 ± 0.6 eV), which showed great consistency. Text North Atlantic Copernicus Publications: E-Journals Biogeosciences 11 16 4529 4540 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
The temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean was assessed on the basis of measurements of gross primary production (GPP), community respiration (CR) and net community production (NCP), as well as experimental assessments of the response of CR to temperature manipulations. Metabolic rates were measured at 68 stations along three consecutive longitudinal transects completed during the Malaspina 2010 Expedition, in three different seasons. Temperature gradients were observed in depth and at basin and seasonal scale. The results showed seasonal variability in the metabolic rates, the highest rates being observed during the spring transect. The overall mean integrated GPP / CR ratio was 1.39 ± 0.27 decreasing from winter to summer, and the NCP for the subtropical North Atlantic Ocean during the cruises exhibits net autotrophy (NCP > 0) in about two-thirds (66%) of the total sampled communities. Also, we reported the activation energies describing the temperature dependence of planktonic community metabolism, which was generally higher for CR than for GPP in the subtropical North Atlantic Ocean, as the metabolic theory of ecology predicts. Furthermore, we made a comparison of activation energies describing the responses to in situ temperature in the field (Ea CR = 1.64 ± 0.36 eV) and those derived experimentally by temperature manipulations (Ea CR = 1.45 ± 0.6 eV), which showed great consistency. |
format |
Text |
author |
García-Corral, L. S. Barber, E. Regaudie-de-Gioux, A. Sal, S. Holding, J. M. Agustí, S. Navarro, N. Serret, P. Mozetič, P. Duarte, C. M. |
spellingShingle |
García-Corral, L. S. Barber, E. Regaudie-de-Gioux, A. Sal, S. Holding, J. M. Agustí, S. Navarro, N. Serret, P. Mozetič, P. Duarte, C. M. Temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean |
author_facet |
García-Corral, L. S. Barber, E. Regaudie-de-Gioux, A. Sal, S. Holding, J. M. Agustí, S. Navarro, N. Serret, P. Mozetič, P. Duarte, C. M. |
author_sort |
García-Corral, L. S. |
title |
Temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean |
title_short |
Temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean |
title_full |
Temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean |
title_fullStr |
Temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean |
title_full_unstemmed |
Temperature dependence of planktonic metabolism in the subtropical North Atlantic Ocean |
title_sort |
temperature dependence of planktonic metabolism in the subtropical north atlantic ocean |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-11-4529-2014 https://www.biogeosciences.net/11/4529/2014/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-11-4529-2014 https://www.biogeosciences.net/11/4529/2014/ |
op_doi |
https://doi.org/10.5194/bg-11-4529-2014 |
container_title |
Biogeosciences |
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11 |
container_issue |
16 |
container_start_page |
4529 |
op_container_end_page |
4540 |
_version_ |
1766120112241246208 |