Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean
Analysis of the diatom assemblage during the recent KErguelen: compared study of Ocean and Plateau in Surface water (KEOPS) mission (January-February 2005), enabled a modern description of the summer bloom community over the Kerguelen Plateau in the context of the community in the surrounding high-n...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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ftinsu:oai:HAL:hal-00709951v1 2023-06-18T03:37:30+02:00 Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean Armand, Leanne K. Cornet, Veronique Mosseri, Julie Queguiner, Bernard Laboratoire d'océanographie et de biogéochimie (LOB) Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2008 https://hal.science/hal-00709951 https://doi.org/10.1016/j.dsr2.2007.12.031 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2007.12.031 hal-00709951 https://hal.science/hal-00709951 doi:10.1016/j.dsr2.2007.12.031 ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-00709951 Deep Sea Research Part II: Topical Studies in Oceanography, 2008, 55, pp.653-676. ⟨10.1016/j.dsr2.2007.12.031⟩ diatoms bacillariophyceae biomass cell abundance Chaetoceros Eucampia SUB-ARCTIC PACIFIC INDIAN-OCEAN AUSTRAL SUMMER INTERANNUAL VARIABILITY PLANKTON DIATOMS CROZET BASIN PHYTOPLANKTON ISLANDS SECTOR ANTARCTICA [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2008 ftinsu https://doi.org/10.1016/j.dsr2.2007.12.031 2023-06-05T19:00:29Z Analysis of the diatom assemblage during the recent KErguelen: compared study of Ocean and Plateau in Surface water (KEOPS) mission (January-February 2005), enabled a modern description of the summer bloom community over the Kerguelen Plateau in the context of the community in the surrounding high-nutrient, low-chlorophyll (HNLC) Southern Ocean waters. Net samples revealed biogeographic partitioning of certain species. Comparison of net samples with CTD-Niskin bottle samples revealed a considerable underestimation of large diatom species in the water samples. We analysed four plateau stations and one off-plateau HNLC station for individual species abundances and biomass contributions down to 150 m. The stations can be divided into two groups based on species composition and total biomass contributions, equating to high (45.6-99.4 mu g C L-1) and low (2.5-25.7 mu g C L-1) biomass regimes. Individual species abundances were not related to the major species biomass contributions. Repeat analyses at the bloom station, A3, and the off-plateau HNLC station, C11, revealed evolution from a Chaetoceros subgenus Hyalochaete bloom to a remnant Eucampia antarctica assemblage. In contrast the HNLC station, C11, remained dominated by Fragilariopsis pseudonana and F kerguelensis throughout the survey. Comparison to artificial iron experiments reveals differences in the responses of Pseudo-nitzschia spp. and F. kerguelensis, which may arise in part from differences in in macro-nutrient supply, in particular silicic acid availability, as well as from seasonal succession. (C) 2008 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Antarc* Antarctica Arctic Phytoplankton Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Arctic Austral Indian Kerguelen Pacific Southern Ocean Deep Sea Research Part II: Topical Studies in Oceanography 55 5-7 653 676 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
diatoms bacillariophyceae biomass cell abundance Chaetoceros Eucampia SUB-ARCTIC PACIFIC INDIAN-OCEAN AUSTRAL SUMMER INTERANNUAL VARIABILITY PLANKTON DIATOMS CROZET BASIN PHYTOPLANKTON ISLANDS SECTOR ANTARCTICA [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
diatoms bacillariophyceae biomass cell abundance Chaetoceros Eucampia SUB-ARCTIC PACIFIC INDIAN-OCEAN AUSTRAL SUMMER INTERANNUAL VARIABILITY PLANKTON DIATOMS CROZET BASIN PHYTOPLANKTON ISLANDS SECTOR ANTARCTICA [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Armand, Leanne K. Cornet, Veronique Mosseri, Julie Queguiner, Bernard Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean |
topic_facet |
diatoms bacillariophyceae biomass cell abundance Chaetoceros Eucampia SUB-ARCTIC PACIFIC INDIAN-OCEAN AUSTRAL SUMMER INTERANNUAL VARIABILITY PLANKTON DIATOMS CROZET BASIN PHYTOPLANKTON ISLANDS SECTOR ANTARCTICA [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
Analysis of the diatom assemblage during the recent KErguelen: compared study of Ocean and Plateau in Surface water (KEOPS) mission (January-February 2005), enabled a modern description of the summer bloom community over the Kerguelen Plateau in the context of the community in the surrounding high-nutrient, low-chlorophyll (HNLC) Southern Ocean waters. Net samples revealed biogeographic partitioning of certain species. Comparison of net samples with CTD-Niskin bottle samples revealed a considerable underestimation of large diatom species in the water samples. We analysed four plateau stations and one off-plateau HNLC station for individual species abundances and biomass contributions down to 150 m. The stations can be divided into two groups based on species composition and total biomass contributions, equating to high (45.6-99.4 mu g C L-1) and low (2.5-25.7 mu g C L-1) biomass regimes. Individual species abundances were not related to the major species biomass contributions. Repeat analyses at the bloom station, A3, and the off-plateau HNLC station, C11, revealed evolution from a Chaetoceros subgenus Hyalochaete bloom to a remnant Eucampia antarctica assemblage. In contrast the HNLC station, C11, remained dominated by Fragilariopsis pseudonana and F kerguelensis throughout the survey. Comparison to artificial iron experiments reveals differences in the responses of Pseudo-nitzschia spp. and F. kerguelensis, which may arise in part from differences in in macro-nutrient supply, in particular silicic acid availability, as well as from seasonal succession. (C) 2008 Elsevier Ltd. All rights reserved. |
author2 |
Laboratoire d'océanographie et de biogéochimie (LOB) Université de la Méditerranée - Aix-Marseille 2-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Armand, Leanne K. Cornet, Veronique Mosseri, Julie Queguiner, Bernard |
author_facet |
Armand, Leanne K. Cornet, Veronique Mosseri, Julie Queguiner, Bernard |
author_sort |
Armand, Leanne K. |
title |
Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean |
title_short |
Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean |
title_full |
Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean |
title_fullStr |
Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean |
title_full_unstemmed |
Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean |
title_sort |
late summer diatom biomass and community structure on and around the naturally iron-fertilised kerguelen plateau in the southern ocean |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00709951 https://doi.org/10.1016/j.dsr2.2007.12.031 |
geographic |
Arctic Austral Indian Kerguelen Pacific Southern Ocean |
geographic_facet |
Arctic Austral Indian Kerguelen Pacific Southern Ocean |
genre |
Antarc* Antarctica Arctic Phytoplankton Southern Ocean |
genre_facet |
Antarc* Antarctica Arctic Phytoplankton Southern Ocean |
op_source |
ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-00709951 Deep Sea Research Part II: Topical Studies in Oceanography, 2008, 55, pp.653-676. ⟨10.1016/j.dsr2.2007.12.031⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2007.12.031 hal-00709951 https://hal.science/hal-00709951 doi:10.1016/j.dsr2.2007.12.031 |
op_doi |
https://doi.org/10.1016/j.dsr2.2007.12.031 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
55 |
container_issue |
5-7 |
container_start_page |
653 |
op_container_end_page |
676 |
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1769010295779360768 |