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...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2007
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.505.2290 http://www.com.univ-mrs.fr/~queguiner/files/Armand et al., 2008-a.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.505.2290 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.505.2290 2023-05-15T13:53:42+02:00 Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean Leanne K. Arm Veronique Cornet-barthaux Julie Mosseri The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.505.2290 http://www.com.univ-mrs.fr/~queguiner/files/Armand et al., 2008-a.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.505.2290 http://www.com.univ-mrs.fr/~queguiner/files/Armand et al., 2008-a.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.com.univ-mrs.fr/~queguiner/files/Armand et al., 2008-a.pdf Diatoms Bacillariophyceae Biomass Cell abundance Chaetoceros Eucampia text 2007 ftciteseerx 2016-01-08T09:20:21Z 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 150m. The stations can be divided into two groups based on species composition and total biomass contributions, equating to high (45.6–99.4 mg CL1) and low (2.5–25.7 mg CL1) 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 macro-nutrient supply, in particular silicic acid availability, as well as from seasonal succession. Text Antarc* Antarctica Southern Ocean Unknown Kerguelen Southern Ocean |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Diatoms Bacillariophyceae Biomass Cell abundance Chaetoceros Eucampia |
spellingShingle |
Diatoms Bacillariophyceae Biomass Cell abundance Chaetoceros Eucampia Leanne K. Arm Veronique Cornet-barthaux Julie Mosseri 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 |
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 150m. The stations can be divided into two groups based on species composition and total biomass contributions, equating to high (45.6–99.4 mg CL1) and low (2.5–25.7 mg CL1) 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 macro-nutrient supply, in particular silicic acid availability, as well as from seasonal succession. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Leanne K. Arm Veronique Cornet-barthaux Julie Mosseri |
author_facet |
Leanne K. Arm Veronique Cornet-barthaux Julie Mosseri |
author_sort |
Leanne K. Arm |
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 |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.505.2290 http://www.com.univ-mrs.fr/~queguiner/files/Armand et al., 2008-a.pdf |
geographic |
Kerguelen Southern Ocean |
geographic_facet |
Kerguelen Southern Ocean |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_source |
http://www.com.univ-mrs.fr/~queguiner/files/Armand et al., 2008-a.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.505.2290 http://www.com.univ-mrs.fr/~queguiner/files/Armand et al., 2008-a.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766259073711341568 |