Communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des Kerguelen et la mer Méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème.
Mesozooplankton from the epipelagic layer (0-200 m) was studied in two contrasted ecosystems: the first one is located in the Austral Ocean, around the Southern part of the Kerguelen shelf and over the HNLC (High Nutrient Low Chlorophyll) area, at the end of summer bloom period supported by natural...
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2011
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Online Access: | https://tel.archives-ouvertes.fr/tel-00745294/file/Nowaczyk_2011.pdf https://tel.archives-ouvertes.fr/tel-00745294 |
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fttriple:oai:gotriple.eu:10670/1.yyjx2j 2023-05-15T15:33:58+02:00 Communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des Kerguelen et la mer Méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème. Metaplanktonic communities in the epipelagic area of two contrasting environments, the Kerguelen plateau and the Mediterranean Sea: characterisation, spatial distribution and role in the ecosystem. NOWACZYK, Antoine LOPB Centre d'océanologie de Marseille (COM) Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Aix-Marseille Université Carlotti, François 2011-12-19 https://tel.archives-ouvertes.fr/tel-00745294/file/Nowaczyk_2011.pdf https://tel.archives-ouvertes.fr/tel-00745294 fr fre HAL CCSD tel-00745294 10670/1.yyjx2j https://tel.archives-ouvertes.fr/tel-00745294/file/Nowaczyk_2011.pdf https://tel.archives-ouvertes.fr/tel-00745294 other Le serveur TEL (thèses-en-ligne) Biodiversité et Ecologie. Aix-Marseille Université, 2011. Français Zooplancton biogeochimie océan austral méditerranée copépode écosystème pélagique envir geo Thesis https://vocabularies.coar-repositories.org/resource_types/c_46ec/ 2011 fttriple 2023-01-22T17:25:37Z Mesozooplankton from the epipelagic layer (0-200 m) was studied in two contrasted ecosystems: the first one is located in the Austral Ocean, around the Southern part of the Kerguelen shelf and over the HNLC (High Nutrient Low Chlorophyll) area, at the end of summer bloom period supported by natural iron enrichment (KEOPS, January-February 2005). The second study focused on the whole Mediterranean Sea, along a 3 000 km transect characterized by an oligotrophy gradient decrease from West to East (BOUM, June-July 2008) with low phosphorus concentration. Mesozooplanktonic community was characterized by both its stock composition (abundance and biomass) and its structure (taxonomic composition and size spectrum). Spatial distribution at the regional scale was studied and linked to different environmental and trophic parameters. The community impact on primary production was also estimated from different physiological process analyses (ingestion, respiration and excretion). Mesozooplanktonic community showed higher abundance and biomass over the Kerguelen shelf than in HNLC area. The community was essentially composed by copepodite stages, large quantity of exuviae and high respiration rates suggesting active growth. However, phytoplankton based ingestion rates were low implying the use of other food source such as microzooplankton. In the Mediterranean, abundance showed an increasing westward gradient with a southward decreasing gradient in the Occidental Basin. This distribution was strongly linked to the chlorophyll concentration. Mesozooplankton grazing on primary producers was important. Biogeochemical flux associated with the metabolic activities supported in excess of 100 % of the primary production needs in term of carbon, nitrogen and phosphorus. Relationships between the specific diversity and the environmental variables (physical, chemical and biological) showed a high regionalization in the Mediterranean Sea whereas in the Kerguelen shelf these relations are weak. Le mésozooplancton de la couche ... Thesis Austral Ocean Unknown Austral Austral Ocean ENVELOPE(90.000,90.000,-60.000,-60.000) Kerguelen Le Plateau ENVELOPE(70.250,70.250,-49.350,-49.350) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
French |
topic |
Zooplancton biogeochimie océan austral méditerranée copépode écosystème pélagique envir geo |
spellingShingle |
Zooplancton biogeochimie océan austral méditerranée copépode écosystème pélagique envir geo NOWACZYK, Antoine Communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des Kerguelen et la mer Méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème. |
topic_facet |
Zooplancton biogeochimie océan austral méditerranée copépode écosystème pélagique envir geo |
description |
Mesozooplankton from the epipelagic layer (0-200 m) was studied in two contrasted ecosystems: the first one is located in the Austral Ocean, around the Southern part of the Kerguelen shelf and over the HNLC (High Nutrient Low Chlorophyll) area, at the end of summer bloom period supported by natural iron enrichment (KEOPS, January-February 2005). The second study focused on the whole Mediterranean Sea, along a 3 000 km transect characterized by an oligotrophy gradient decrease from West to East (BOUM, June-July 2008) with low phosphorus concentration. Mesozooplanktonic community was characterized by both its stock composition (abundance and biomass) and its structure (taxonomic composition and size spectrum). Spatial distribution at the regional scale was studied and linked to different environmental and trophic parameters. The community impact on primary production was also estimated from different physiological process analyses (ingestion, respiration and excretion). Mesozooplanktonic community showed higher abundance and biomass over the Kerguelen shelf than in HNLC area. The community was essentially composed by copepodite stages, large quantity of exuviae and high respiration rates suggesting active growth. However, phytoplankton based ingestion rates were low implying the use of other food source such as microzooplankton. In the Mediterranean, abundance showed an increasing westward gradient with a southward decreasing gradient in the Occidental Basin. This distribution was strongly linked to the chlorophyll concentration. Mesozooplankton grazing on primary producers was important. Biogeochemical flux associated with the metabolic activities supported in excess of 100 % of the primary production needs in term of carbon, nitrogen and phosphorus. Relationships between the specific diversity and the environmental variables (physical, chemical and biological) showed a high regionalization in the Mediterranean Sea whereas in the Kerguelen shelf these relations are weak. Le mésozooplancton de la couche ... |
author2 |
LOPB Centre d'océanologie de Marseille (COM) Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Aix-Marseille Université Carlotti, François |
format |
Thesis |
author |
NOWACZYK, Antoine |
author_facet |
NOWACZYK, Antoine |
author_sort |
NOWACZYK, Antoine |
title |
Communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des Kerguelen et la mer Méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème. |
title_short |
Communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des Kerguelen et la mer Méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème. |
title_full |
Communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des Kerguelen et la mer Méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème. |
title_fullStr |
Communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des Kerguelen et la mer Méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème. |
title_full_unstemmed |
Communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des Kerguelen et la mer Méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème. |
title_sort |
communautés métazooplanctoniques de la zone épipélagique de deux environnements contrastés, le plateau des kerguelen et la mer méditerranée : caractérisation, distribution spatiale et rôle dans l'écosystème. |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://tel.archives-ouvertes.fr/tel-00745294/file/Nowaczyk_2011.pdf https://tel.archives-ouvertes.fr/tel-00745294 |
long_lat |
ENVELOPE(90.000,90.000,-60.000,-60.000) ENVELOPE(70.250,70.250,-49.350,-49.350) |
geographic |
Austral Austral Ocean Kerguelen Le Plateau |
geographic_facet |
Austral Austral Ocean Kerguelen Le Plateau |
genre |
Austral Ocean |
genre_facet |
Austral Ocean |
op_source |
Le serveur TEL (thèses-en-ligne) Biodiversité et Ecologie. Aix-Marseille Université, 2011. Français |
op_relation |
tel-00745294 10670/1.yyjx2j https://tel.archives-ouvertes.fr/tel-00745294/file/Nowaczyk_2011.pdf https://tel.archives-ouvertes.fr/tel-00745294 |
op_rights |
other |
_version_ |
1766364544730398720 |