Carbon intake by zooplankton. Importance and role of zooplankton grazing in the Indian sector of the Southern Ocean
Southern Ocean Joint Global Ocean Flux Symposium (SO-JGOFS), BREST, FRANCE, JUL 08-12, 2000 International audience Ingestion by mesozooplankton and micronekton was monitored during two of the ANTARES cruises in the Indian sector of the Southern Ocean in spring and summer. The composition of the meso...
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Online Access: | https://hal.science/hal-03483028 https://doi.org/10.1016/S0967-0645(02)00077-2 |
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ftsorbonneuniv:oai:HAL:hal-03483028v1 2024-09-15T17:47:02+00:00 Carbon intake by zooplankton. Importance and role of zooplankton grazing in the Indian sector of the Southern Ocean Mayzaud, P Tirelli, V Errhif, A Labat, Jp Razouls, S Perissinotto, R 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-03483028 https://doi.org/10.1016/S0967-0645(02)00077-2 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/S0967-0645(02)00077-2 hal-03483028 https://hal.science/hal-03483028 doi:10.1016/S0967-0645(02)00077-2 ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-03483028 Deep Sea Research Part II: Topical Studies in Oceanography, 2002, 49 (16), pp.3169-3187. ⟨10.1016/S0967-0645(02)00077-2⟩ [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/S0967-0645(02)00077-2 2024-07-25T23:47:52Z Southern Ocean Joint Global Ocean Flux Symposium (SO-JGOFS), BREST, FRANCE, JUL 08-12, 2000 International audience Ingestion by mesozooplankton and micronekton was monitored during two of the ANTARES cruises in the Indian sector of the Southern Ocean in spring and summer. The composition of the mesozooplankton populations varied in space and with season. Copepods always dominated in number and biomass, but salps and pteropods were present in the northern part of the transect in summer. Five species of large copepod (Calanus simillimus, Calanoides acutus, Rhincalanus gigas, Calanus propinquus and Metridia gerlachei) dominated the biomass with a North-South gradient. Smaller species (Oithona spp., Ctenocalanus citer, Clausocalanus laticeps) were also present. Biomass showed a definite trend with highest levels towards the polar front zone and permanent open-ocean area. Feeding activity was monitored either for the total population (summer) or specific individuals (spring). In summer, depending on the area considered, grazing rates by mesozooplankton appeared to have a significant impact on phytoplankton primary production. In the northern part of the transect (polar front zone or PFZ), salps and to a minor extent pteropods and copepods contributed mostly to the feeding pressure. Maximum intensity was observed in the Coastal Antarctic Zone (CCSZ) where Euphausia superba (adults and calyptopis larvae) could ingest more than 100% of the daily primary production. In spring, the impact of copepods dominated the zooplankton community. Small calanoids and young stages of large species of copepods rather than adult stages were the dominant contributors to grazing pressure. In summer, respiration rates of the dominant copepod species showed that energy expenditure exceeded by far chlorophyll ingestion. This is generally interpreted as the consequence of ingestion of alternate non-chlorophyll food source. The inverse correlation between the biomass of microzooplankton and the area of maximum difference between grazing ... Article in Journal/Newspaper Antarc* Antarctic Euphausia superba Mesozooplankton Southern Ocean Copepods HAL Sorbonne Université Deep Sea Research Part II: Topical Studies in Oceanography 49 16 3169 3187 |
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Open Polar |
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HAL Sorbonne Université |
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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 Tirelli, V Errhif, A Labat, Jp Razouls, S Perissinotto, R Carbon intake by zooplankton. Importance and role of zooplankton grazing in the Indian sector of the Southern Ocean |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
Southern Ocean Joint Global Ocean Flux Symposium (SO-JGOFS), BREST, FRANCE, JUL 08-12, 2000 International audience Ingestion by mesozooplankton and micronekton was monitored during two of the ANTARES cruises in the Indian sector of the Southern Ocean in spring and summer. The composition of the mesozooplankton populations varied in space and with season. Copepods always dominated in number and biomass, but salps and pteropods were present in the northern part of the transect in summer. Five species of large copepod (Calanus simillimus, Calanoides acutus, Rhincalanus gigas, Calanus propinquus and Metridia gerlachei) dominated the biomass with a North-South gradient. Smaller species (Oithona spp., Ctenocalanus citer, Clausocalanus laticeps) were also present. Biomass showed a definite trend with highest levels towards the polar front zone and permanent open-ocean area. Feeding activity was monitored either for the total population (summer) or specific individuals (spring). In summer, depending on the area considered, grazing rates by mesozooplankton appeared to have a significant impact on phytoplankton primary production. In the northern part of the transect (polar front zone or PFZ), salps and to a minor extent pteropods and copepods contributed mostly to the feeding pressure. Maximum intensity was observed in the Coastal Antarctic Zone (CCSZ) where Euphausia superba (adults and calyptopis larvae) could ingest more than 100% of the daily primary production. In spring, the impact of copepods dominated the zooplankton community. Small calanoids and young stages of large species of copepods rather than adult stages were the dominant contributors to grazing pressure. In summer, respiration rates of the dominant copepod species showed that energy expenditure exceeded by far chlorophyll ingestion. This is generally interpreted as the consequence of ingestion of alternate non-chlorophyll food source. The inverse correlation between the biomass of microzooplankton and the area of maximum difference between grazing ... |
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 Tirelli, V Errhif, A Labat, Jp Razouls, S Perissinotto, R |
author_facet |
Mayzaud, P Tirelli, V Errhif, A Labat, Jp Razouls, S Perissinotto, R |
author_sort |
Mayzaud, P |
title |
Carbon intake by zooplankton. Importance and role of zooplankton grazing in the Indian sector of the Southern Ocean |
title_short |
Carbon intake by zooplankton. Importance and role of zooplankton grazing in the Indian sector of the Southern Ocean |
title_full |
Carbon intake by zooplankton. Importance and role of zooplankton grazing in the Indian sector of the Southern Ocean |
title_fullStr |
Carbon intake by zooplankton. Importance and role of zooplankton grazing in the Indian sector of the Southern Ocean |
title_full_unstemmed |
Carbon intake by zooplankton. Importance and role of zooplankton grazing in the Indian sector of the Southern Ocean |
title_sort |
carbon intake by zooplankton. importance and role of zooplankton grazing in the indian sector of the southern ocean |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.science/hal-03483028 https://doi.org/10.1016/S0967-0645(02)00077-2 |
genre |
Antarc* Antarctic Euphausia superba Mesozooplankton Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Euphausia superba Mesozooplankton Southern Ocean Copepods |
op_source |
ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-03483028 Deep Sea Research Part II: Topical Studies in Oceanography, 2002, 49 (16), pp.3169-3187. ⟨10.1016/S0967-0645(02)00077-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0967-0645(02)00077-2 hal-03483028 https://hal.science/hal-03483028 doi:10.1016/S0967-0645(02)00077-2 |
op_doi |
https://doi.org/10.1016/S0967-0645(02)00077-2 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
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49 |
container_issue |
16 |
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3169 |
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3187 |
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