Feeding, respiration and egg production rates of copepods during austral spring in the Indian sector of the Antarctic Ocean: role of the zooplankton community in carbon transformation
International audience During the austral spring period of 1996, the composition, age structure and physiological activity of zooplankton were studied in the Indian sector of the Southern Ocean. Zooplankton biomass ranged from less than 1 gm(-2) in the Northern Polar Front Zone (PFZ) to 16 g m(-2) n...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Online Access: | https://hal.science/hal-03482987 https://doi.org/10.1016/S0967-0637(02)00012-2 |
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ftsorbonneuniv:oai:HAL:hal-03482987v1 2024-09-09T19:11:46+00:00 Feeding, respiration and egg production rates of copepods during austral spring in the Indian sector of the Antarctic Ocean: role of the zooplankton community in carbon transformation Mayzaud, P Razouls, S Errhif, A Tirelli, V Labat, Jp Station Zoologique de Villefranche Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2002 https://hal.science/hal-03482987 https://doi.org/10.1016/S0967-0637(02)00012-2 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/S0967-0637(02)00012-2 hal-03482987 https://hal.science/hal-03482987 doi:10.1016/S0967-0637(02)00012-2 ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers https://hal.science/hal-03482987 Deep Sea Research Part I: Oceanographic Research Papers, 2002, 49 (6), pp.1027-1048. ⟨10.1016/S0967-0637(02)00012-2⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2002 ftsorbonneuniv https://doi.org/10.1016/S0967-0637(02)00012-2 2024-07-25T23:47:52Z International audience During the austral spring period of 1996, the composition, age structure and physiological activity of zooplankton were studied in the Indian sector of the Southern Ocean. Zooplankton biomass ranged from less than 1 gm(-2) in the Northern Polar Front Zone (PFZ) to 16 g m(-2) near the ice edge in the Seasonal Ice Zone (SIZ). Zooplankton communities were dominated by copepods associated with euphausiid larvae. At all stations, species composition of copepods was dominated in number by small species (Oithona spp, Ctenocalanus citer). Northern stations were characterized by Calanus simillimus and Metridia lucens. Southern stations showed high abundance of Calanoides acutus, Calanus propinquus and Rhincalanus gigas. Stage distribution was analyzed for the four main contributors to the copepod biomass (Calanus simillimus, Calanoides acutus, Calanus propinquus and Rhincalanus gigas). Gut pigment content and gut transit time showed a strong day-night periodicity. Gut transit times were usually high with values ranging from 1 h (Calanus propinquus) to 1 h 30 min (Rhincalanus gigas). Maximum ingestion rates were recorded for Calanus propinquus and Pleuromamma robusta. Respiration rates were measured for 13 species of copepods and varied from 0.5-0.6 mul O-2 ind(-1) day(-1) for smaller species to 20-62 mul O-2 ind(-1) day(-1) for the larger ones. The impact of the copepod population was estimated from the CO2 produced per m-2 and per day, which showed a release of 4.2-4.5 mmol. It corresponded to a minimum ingestion of 41.4% in the Permanent Open Ocean Zone (POOZ) and 22.6% in the SIZ of the daily primary production. The budget between carbon ingestion and respiratory requirements appears to be nearly balanced, but with the exception of Calanus propinquus, cannot accommodate the addition of the cost of egg production, which only partially relies on food intake. During austral spring, the population studied appeared to rely mostly on phytoplankton as food, though additional use of internal energy ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Southern Ocean Copepods HAL Sorbonne Université Antarctic Antarctic Ocean Austral Indian Southern Ocean The Antarctic Deep Sea Research Part I: Oceanographic Research Papers 49 6 1027 1048 |
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Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
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[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Mayzaud, P Razouls, S Errhif, A Tirelli, V Labat, Jp Feeding, respiration and egg production rates of copepods during austral spring in the Indian sector of the Antarctic Ocean: role of the zooplankton community in carbon transformation |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience During the austral spring period of 1996, the composition, age structure and physiological activity of zooplankton were studied in the Indian sector of the Southern Ocean. Zooplankton biomass ranged from less than 1 gm(-2) in the Northern Polar Front Zone (PFZ) to 16 g m(-2) near the ice edge in the Seasonal Ice Zone (SIZ). Zooplankton communities were dominated by copepods associated with euphausiid larvae. At all stations, species composition of copepods was dominated in number by small species (Oithona spp, Ctenocalanus citer). Northern stations were characterized by Calanus simillimus and Metridia lucens. Southern stations showed high abundance of Calanoides acutus, Calanus propinquus and Rhincalanus gigas. Stage distribution was analyzed for the four main contributors to the copepod biomass (Calanus simillimus, Calanoides acutus, Calanus propinquus and Rhincalanus gigas). Gut pigment content and gut transit time showed a strong day-night periodicity. Gut transit times were usually high with values ranging from 1 h (Calanus propinquus) to 1 h 30 min (Rhincalanus gigas). Maximum ingestion rates were recorded for Calanus propinquus and Pleuromamma robusta. Respiration rates were measured for 13 species of copepods and varied from 0.5-0.6 mul O-2 ind(-1) day(-1) for smaller species to 20-62 mul O-2 ind(-1) day(-1) for the larger ones. The impact of the copepod population was estimated from the CO2 produced per m-2 and per day, which showed a release of 4.2-4.5 mmol. It corresponded to a minimum ingestion of 41.4% in the Permanent Open Ocean Zone (POOZ) and 22.6% in the SIZ of the daily primary production. The budget between carbon ingestion and respiratory requirements appears to be nearly balanced, but with the exception of Calanus propinquus, cannot accommodate the addition of the cost of egg production, which only partially relies on food intake. During austral spring, the population studied appeared to rely mostly on phytoplankton as food, though additional use of internal energy ... |
author2 |
Station Zoologique de Villefranche Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Mayzaud, P Razouls, S Errhif, A Tirelli, V Labat, Jp |
author_facet |
Mayzaud, P Razouls, S Errhif, A Tirelli, V Labat, Jp |
author_sort |
Mayzaud, P |
title |
Feeding, respiration and egg production rates of copepods during austral spring in the Indian sector of the Antarctic Ocean: role of the zooplankton community in carbon transformation |
title_short |
Feeding, respiration and egg production rates of copepods during austral spring in the Indian sector of the Antarctic Ocean: role of the zooplankton community in carbon transformation |
title_full |
Feeding, respiration and egg production rates of copepods during austral spring in the Indian sector of the Antarctic Ocean: role of the zooplankton community in carbon transformation |
title_fullStr |
Feeding, respiration and egg production rates of copepods during austral spring in the Indian sector of the Antarctic Ocean: role of the zooplankton community in carbon transformation |
title_full_unstemmed |
Feeding, respiration and egg production rates of copepods during austral spring in the Indian sector of the Antarctic Ocean: role of the zooplankton community in carbon transformation |
title_sort |
feeding, respiration and egg production rates of copepods during austral spring in the indian sector of the antarctic ocean: role of the zooplankton community in carbon transformation |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.science/hal-03482987 https://doi.org/10.1016/S0967-0637(02)00012-2 |
geographic |
Antarctic Antarctic Ocean Austral Indian Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Austral Indian Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctic Ocean Southern Ocean Copepods |
op_source |
ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers https://hal.science/hal-03482987 Deep Sea Research Part I: Oceanographic Research Papers, 2002, 49 (6), pp.1027-1048. ⟨10.1016/S0967-0637(02)00012-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0967-0637(02)00012-2 hal-03482987 https://hal.science/hal-03482987 doi:10.1016/S0967-0637(02)00012-2 |
op_doi |
https://doi.org/10.1016/S0967-0637(02)00012-2 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
49 |
container_issue |
6 |
container_start_page |
1027 |
op_container_end_page |
1048 |
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1809751988121894912 |