Metabolic state along a summer north-south transect near the Antarctic Peninsula: A size spectra approach
To establish a metabolic state along a north-south transect in Antarctic waters, we approached community respiration (CR) from a combined perspective based on the metabolic theory of ecology (MTE) and the size-scaling of the whole planktonic community. A detailed analysis of a summer integrated mult...
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Oxford University Press
2014
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Online Access: | http://hdl.handle.net/10261/102844 https://doi.org/10.1093/plankt/fbu042 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100003339 |
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ftcsic:oai:digital.csic.es:10261/102844 2024-02-11T09:58:26+01:00 Metabolic state along a summer north-south transect near the Antarctic Peninsula: A size spectra approach García Muñoz, Cristina García, Carlos M. Lubián, Luis M. López Urrutia, Ángel Hernández León, Santiago Ameneiro, Julia Ministerio de Educación y Ciencia (España) European Commission Consejo Superior de Investigaciones Científicas (España) 2014-07 http://hdl.handle.net/10261/102844 https://doi.org/10.1093/plankt/fbu042 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100003339 unknown Oxford University Press http://doi.org/10.1093/plankt/fbu042 doi:10.1093/plankt/fbu042 issn: 0142-7873 e-issn: 1464-3774 Journal of Plankton Research 36(4): 1074-1091 (2014) http://hdl.handle.net/10261/102844 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003339 none Normalized biomass size spectra South Shetland Islands Metabolic state artículo http://purl.org/coar/resource_type/c_6501 2014 ftcsic https://doi.org/10.1093/plankt/fbu04210.13039/50110000078010.13039/501100003339 2024-01-16T10:01:31Z To establish a metabolic state along a north-south transect in Antarctic waters, we approached community respiration (CR) from a combined perspective based on the metabolic theory of ecology (MTE) and the size-scaling of the whole planktonic community. A detailed analysis of a summer integrated multi-trophic normalized biomass size spectra (NBSS), from heterotrophic bacteria to zooplankton, was carried out. To acquire individual size data, different techniques were combined: flow cytometry for smaller fractions (<20 μm of equivalent spherical diameter), FlowCAM for larger nano- and microplankton and scanning and image analysis for the zooplankton fractions. The distribution of the NBSS was linear at all stations (R2 values: 0.87-0.93) but dome-shape features appeared related to phytoplankton cell distribution which are responsible for a large fraction of microbial respiration. Generally, the region showed an autotrophic budget south of the archipelago due to gross primary production (GPP) values up to 2804 mg C m-2 day-1, where salps could significantly contribute to the carbon export flux. Contrastingly, higher CR rates (.1000 mg C m-2 day-1) were found at the northern stations due to a higher phytoplankton respiration activity associated with increasing sea water temperatures and a higher presence of heterotrophic organisms (microheterotrophs, chaetognaths and copepods) resulting in a net heterotrophic metabolic state (GPP/CR < 1). © 2014 The Author. Published by Oxford University Press. All rights reserved. This work was supported by project COUPLING CTM2008-06343-C02-02/ANT from the Spanish Ministry of Science and Education. C.G-M.'s work was supported by a pre-doctoral fellowship from the Spanish Council for Research (CSIC), JAE-Predoc 2009. Peer Reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula South Shetland Islands Copepods Digital.CSIC (Spanish National Research Council) Antarctic Antarctic Peninsula South Shetland Islands The Antarctic Journal of Plankton Research 36 4 1074 1091 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Normalized biomass size spectra South Shetland Islands Metabolic state |
spellingShingle |
Normalized biomass size spectra South Shetland Islands Metabolic state García Muñoz, Cristina García, Carlos M. Lubián, Luis M. López Urrutia, Ángel Hernández León, Santiago Ameneiro, Julia Metabolic state along a summer north-south transect near the Antarctic Peninsula: A size spectra approach |
topic_facet |
Normalized biomass size spectra South Shetland Islands Metabolic state |
description |
To establish a metabolic state along a north-south transect in Antarctic waters, we approached community respiration (CR) from a combined perspective based on the metabolic theory of ecology (MTE) and the size-scaling of the whole planktonic community. A detailed analysis of a summer integrated multi-trophic normalized biomass size spectra (NBSS), from heterotrophic bacteria to zooplankton, was carried out. To acquire individual size data, different techniques were combined: flow cytometry for smaller fractions (<20 μm of equivalent spherical diameter), FlowCAM for larger nano- and microplankton and scanning and image analysis for the zooplankton fractions. The distribution of the NBSS was linear at all stations (R2 values: 0.87-0.93) but dome-shape features appeared related to phytoplankton cell distribution which are responsible for a large fraction of microbial respiration. Generally, the region showed an autotrophic budget south of the archipelago due to gross primary production (GPP) values up to 2804 mg C m-2 day-1, where salps could significantly contribute to the carbon export flux. Contrastingly, higher CR rates (.1000 mg C m-2 day-1) were found at the northern stations due to a higher phytoplankton respiration activity associated with increasing sea water temperatures and a higher presence of heterotrophic organisms (microheterotrophs, chaetognaths and copepods) resulting in a net heterotrophic metabolic state (GPP/CR < 1). © 2014 The Author. Published by Oxford University Press. All rights reserved. This work was supported by project COUPLING CTM2008-06343-C02-02/ANT from the Spanish Ministry of Science and Education. C.G-M.'s work was supported by a pre-doctoral fellowship from the Spanish Council for Research (CSIC), JAE-Predoc 2009. Peer Reviewed |
author2 |
Ministerio de Educación y Ciencia (España) European Commission Consejo Superior de Investigaciones Científicas (España) |
format |
Article in Journal/Newspaper |
author |
García Muñoz, Cristina García, Carlos M. Lubián, Luis M. López Urrutia, Ángel Hernández León, Santiago Ameneiro, Julia |
author_facet |
García Muñoz, Cristina García, Carlos M. Lubián, Luis M. López Urrutia, Ángel Hernández León, Santiago Ameneiro, Julia |
author_sort |
García Muñoz, Cristina |
title |
Metabolic state along a summer north-south transect near the Antarctic Peninsula: A size spectra approach |
title_short |
Metabolic state along a summer north-south transect near the Antarctic Peninsula: A size spectra approach |
title_full |
Metabolic state along a summer north-south transect near the Antarctic Peninsula: A size spectra approach |
title_fullStr |
Metabolic state along a summer north-south transect near the Antarctic Peninsula: A size spectra approach |
title_full_unstemmed |
Metabolic state along a summer north-south transect near the Antarctic Peninsula: A size spectra approach |
title_sort |
metabolic state along a summer north-south transect near the antarctic peninsula: a size spectra approach |
publisher |
Oxford University Press |
publishDate |
2014 |
url |
http://hdl.handle.net/10261/102844 https://doi.org/10.1093/plankt/fbu042 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100003339 |
geographic |
Antarctic Antarctic Peninsula South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula South Shetland Islands Copepods |
genre_facet |
Antarc* Antarctic Antarctic Peninsula South Shetland Islands Copepods |
op_relation |
http://doi.org/10.1093/plankt/fbu042 doi:10.1093/plankt/fbu042 issn: 0142-7873 e-issn: 1464-3774 Journal of Plankton Research 36(4): 1074-1091 (2014) http://hdl.handle.net/10261/102844 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003339 |
op_rights |
none |
op_doi |
https://doi.org/10.1093/plankt/fbu04210.13039/50110000078010.13039/501100003339 |
container_title |
Journal of Plankton Research |
container_volume |
36 |
container_issue |
4 |
container_start_page |
1074 |
op_container_end_page |
1091 |
_version_ |
1790594093286424576 |