Antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the Bransfield strait during January 1994
13 pages, 6 figures, 3 tables [EN] Metabolic rates (oxygen consumption and ammonia excretion) of zooplankton were determined during the austral summer (January 1994), in the eastern Bransfield Strait. The study area comprised four distinct hydrographic zones: the ice edge on the western Weddell Sea,...
Published in: | Journal of Marine Systems |
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Elsevier
1998
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Online Access: | http://hdl.handle.net/10261/180947 https://doi.org/10.1016/S0924-7963(98)00048-7 https://doi.org/10.13039/501100007273 |
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ftcsic:oai:digital.csic.es:10261/180947 2024-02-11T09:56:57+01:00 Antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the Bransfield strait during January 1994 Alcaraz, Miquel Saiz, Enric Fernández, José A. Trepat, Isabel Figueiras, F. G. Calbet, Albert Bautista, B. Ministerio de Educación y Ciencia (España) Comisión Interministerial de Ciencia y Tecnología, CICYT (España) 1998-11 http://hdl.handle.net/10261/180947 https://doi.org/10.1016/S0924-7963(98)00048-7 https://doi.org/10.13039/501100007273 unknown Elsevier https://doi.org/10.1016/S0924-7963(98)00048-7 Sí doi:10.1016/S0924-7963(98)00048-7 issn: 0924-7963 e-issn: 1879-1573 Journal of Marine Systems 17(1-4): 347-359 (1998) http://hdl.handle.net/10261/180947 http://dx.doi.org/10.13039/501100007273 none Zooplankton Antarctica Bransfield Strait Ammonia excretion Respiratory metabolism artículo http://purl.org/coar/resource_type/c_6501 1998 ftcsic https://doi.org/10.1016/S0924-7963(98)00048-710.13039/501100007273 2024-01-16T10:38:45Z 13 pages, 6 figures, 3 tables [EN] Metabolic rates (oxygen consumption and ammonia excretion) of zooplankton were determined during the austral summer (January 1994), in the eastern Bransfield Strait. The study area comprised four distinct hydrographic zones: the ice edge on the western Weddell Sea, the waters of Weddell Sea origin, the southern part of the Weddell–Scotia Confluence, and the waters of Bellingshausen origin. The objectives were to estimate the fraction of primary production accounted for by the metabolism of salps and crustacean zooplankton, as well as the contribution of their excretion to the nitrogen demand of phytoplankton. Biomass-specific respiration and excretion rates of zooplankton were measured simultaneously by incubation methods at in situ temperatures. Zooplankton biomass was measured as organic C on aliquots of samples taken between 0 and 200 m. Primary production was measured by incorporation, using photosynthesis–irradiance relationships. Primary production ranged from 179 to 1612 mg C m−2 day−1. Salps were the most abundant zooplankton group, located mainly in the northern part of the study area, where they excluded other zooplankters. Their biomass ranged from 115 to 2930 mg C m−2 (0–200 m). On average, their metabolic carbon requirements represented about 5% of primary production per day, and their excretion of ammonia contributed 10% of daily phytoplankton nitrogen demand. Crustacean zooplankton were of minor importance in the study area, except at the ice edge and areas of recently melted ice. Their biomass ranged from 14.5 to 494 mg C m−2 and they required on average 0.9% of daily primary production, while ammonia excretion accounted for around 0.4% of the phytoplankton nitrogen demand. During this cruise, salps were the most important zooplankton group from the point of view of the transfer of biogenic carbon and nitrogen recycling. However, the control exerted by zooplankton on primary producers was overall modest, and most of the phytoplankton carbon probably sedimented ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Bransfield Strait Weddell Sea Digital.CSIC (Spanish National Research Council) Antarctic Austral Bransfield Strait Weddell Weddell Sea Journal of Marine Systems 17 1-4 347 359 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Zooplankton Antarctica Bransfield Strait Ammonia excretion Respiratory metabolism |
spellingShingle |
Zooplankton Antarctica Bransfield Strait Ammonia excretion Respiratory metabolism Alcaraz, Miquel Saiz, Enric Fernández, José A. Trepat, Isabel Figueiras, F. G. Calbet, Albert Bautista, B. Antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the Bransfield strait during January 1994 |
topic_facet |
Zooplankton Antarctica Bransfield Strait Ammonia excretion Respiratory metabolism |
description |
13 pages, 6 figures, 3 tables [EN] Metabolic rates (oxygen consumption and ammonia excretion) of zooplankton were determined during the austral summer (January 1994), in the eastern Bransfield Strait. The study area comprised four distinct hydrographic zones: the ice edge on the western Weddell Sea, the waters of Weddell Sea origin, the southern part of the Weddell–Scotia Confluence, and the waters of Bellingshausen origin. The objectives were to estimate the fraction of primary production accounted for by the metabolism of salps and crustacean zooplankton, as well as the contribution of their excretion to the nitrogen demand of phytoplankton. Biomass-specific respiration and excretion rates of zooplankton were measured simultaneously by incubation methods at in situ temperatures. Zooplankton biomass was measured as organic C on aliquots of samples taken between 0 and 200 m. Primary production was measured by incorporation, using photosynthesis–irradiance relationships. Primary production ranged from 179 to 1612 mg C m−2 day−1. Salps were the most abundant zooplankton group, located mainly in the northern part of the study area, where they excluded other zooplankters. Their biomass ranged from 115 to 2930 mg C m−2 (0–200 m). On average, their metabolic carbon requirements represented about 5% of primary production per day, and their excretion of ammonia contributed 10% of daily phytoplankton nitrogen demand. Crustacean zooplankton were of minor importance in the study area, except at the ice edge and areas of recently melted ice. Their biomass ranged from 14.5 to 494 mg C m−2 and they required on average 0.9% of daily primary production, while ammonia excretion accounted for around 0.4% of the phytoplankton nitrogen demand. During this cruise, salps were the most important zooplankton group from the point of view of the transfer of biogenic carbon and nitrogen recycling. However, the control exerted by zooplankton on primary producers was overall modest, and most of the phytoplankton carbon probably sedimented ... |
author2 |
Ministerio de Educación y Ciencia (España) Comisión Interministerial de Ciencia y Tecnología, CICYT (España) |
format |
Article in Journal/Newspaper |
author |
Alcaraz, Miquel Saiz, Enric Fernández, José A. Trepat, Isabel Figueiras, F. G. Calbet, Albert Bautista, B. |
author_facet |
Alcaraz, Miquel Saiz, Enric Fernández, José A. Trepat, Isabel Figueiras, F. G. Calbet, Albert Bautista, B. |
author_sort |
Alcaraz, Miquel |
title |
Antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the Bransfield strait during January 1994 |
title_short |
Antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the Bransfield strait during January 1994 |
title_full |
Antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the Bransfield strait during January 1994 |
title_fullStr |
Antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the Bransfield strait during January 1994 |
title_full_unstemmed |
Antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the Bransfield strait during January 1994 |
title_sort |
antarctic zooplankton metabolism: carbon requirements and ammonium excretion of salps and crustacean zooplankton in the vicinity of the bransfield strait during january 1994 |
publisher |
Elsevier |
publishDate |
1998 |
url |
http://hdl.handle.net/10261/180947 https://doi.org/10.1016/S0924-7963(98)00048-7 https://doi.org/10.13039/501100007273 |
geographic |
Antarctic Austral Bransfield Strait Weddell Weddell Sea |
geographic_facet |
Antarctic Austral Bransfield Strait Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica Bransfield Strait Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Bransfield Strait Weddell Sea |
op_relation |
https://doi.org/10.1016/S0924-7963(98)00048-7 Sí doi:10.1016/S0924-7963(98)00048-7 issn: 0924-7963 e-issn: 1879-1573 Journal of Marine Systems 17(1-4): 347-359 (1998) http://hdl.handle.net/10261/180947 http://dx.doi.org/10.13039/501100007273 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/S0924-7963(98)00048-710.13039/501100007273 |
container_title |
Journal of Marine Systems |
container_volume |
17 |
container_issue |
1-4 |
container_start_page |
347 |
op_container_end_page |
359 |
_version_ |
1790607302506577920 |