Protist community composition during early phytoplankton blooms in the naturally iron-fertilized Kerguelen area (Southern Ocean)
Microbial eukaryotic community composition was examined by 18S rRNA gene tag pyrosequencing, during the early phase of spring phytoplankton blooms induced by natural iron fertilization, off Kerguelen Island in the Southern Ocean (KEOPS2 cruise). A total of 999 operational taxonomical units (OTUs), a...
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Copernicus Gesellschaft Mbh
2014
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Online Access: | https://doi.org/10.5194/bg-11-5847-2014 https://archimer.ifremer.fr/doc/00291/40221/38694.pdf https://archimer.ifremer.fr/doc/00291/40221/38695.pdf https://archimer.ifremer.fr/doc/00291/40221/48215.pdf https://archimer.ifremer.fr/doc/00291/40221/48216.pdf https://archimer.ifremer.fr/doc/00291/40221/ |
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fttriple:oai:gotriple.eu:10670/1.xju5rn 2023-05-15T18:25:02+02:00 Protist community composition during early phytoplankton blooms in the naturally iron-fertilized Kerguelen area (Southern Ocean) Georges, C. Monchy, S. Genitsaris, S. Christaki, U. 2014-10-21 https://doi.org/10.5194/bg-11-5847-2014 https://archimer.ifremer.fr/doc/00291/40221/38694.pdf https://archimer.ifremer.fr/doc/00291/40221/38695.pdf https://archimer.ifremer.fr/doc/00291/40221/48215.pdf https://archimer.ifremer.fr/doc/00291/40221/48216.pdf https://archimer.ifremer.fr/doc/00291/40221/ en eng Copernicus Gesellschaft Mbh doi:10.5194/bg-11-5847-2014 10670/1.xju5rn https://archimer.ifremer.fr/doc/00291/40221/38694.pdf https://archimer.ifremer.fr/doc/00291/40221/38695.pdf https://archimer.ifremer.fr/doc/00291/40221/48215.pdf https://archimer.ifremer.fr/doc/00291/40221/48216.pdf https://archimer.ifremer.fr/doc/00291/40221/ lic_creative-commons other Archimer, archive institutionnelle de l'Ifremer Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2014-10-21 , Vol. 11 , N. 20 , P. 5847-5863 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2014 fttriple https://doi.org/10.5194/bg-11-5847-2014 2023-01-22T18:39:55Z Microbial eukaryotic community composition was examined by 18S rRNA gene tag pyrosequencing, during the early phase of spring phytoplankton blooms induced by natural iron fertilization, off Kerguelen Island in the Southern Ocean (KEOPS2 cruise). A total of 999 operational taxonomical units (OTUs), affiliated to 30 known high-level taxonomic groups, were retrieved from 16 samples collected in the upper 300m water column. The alveolata group was the most abundant in terms of sequence number and diversity (696 OTUs). The majority of alveolata sequences were affiliated to Dinophyceae and to two major groups of marine alveolates (MALV-I and MALV-II). In the upper 180 m, only 13% of theOTUs were shared between of the fertilized stations and the reference site characterized by high-nutrient low-chlorophyll (HNLC) waters. Fungi and Cerco-zoa were present in iron-fertilized waters, but almost absent in the HNLC samples, while Haptophyta and Chlorophyta characterized the HNLC sample. Finally, the 300m depth samples of all stations were differentiated by the presence of MALV-II and Radiolaria. Multivariate analysis, examining the level of similarity between different samples, showed that protistan assemblages differed significantly between the HNLC and iron-fertilized stations, but also between the diverse iron-fertilized blooms. Text Southern Ocean Unknown Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Southern Ocean Biogeosciences 11 20 5847 5863 |
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envir geo |
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envir geo Georges, C. Monchy, S. Genitsaris, S. Christaki, U. Protist community composition during early phytoplankton blooms in the naturally iron-fertilized Kerguelen area (Southern Ocean) |
topic_facet |
envir geo |
description |
Microbial eukaryotic community composition was examined by 18S rRNA gene tag pyrosequencing, during the early phase of spring phytoplankton blooms induced by natural iron fertilization, off Kerguelen Island in the Southern Ocean (KEOPS2 cruise). A total of 999 operational taxonomical units (OTUs), affiliated to 30 known high-level taxonomic groups, were retrieved from 16 samples collected in the upper 300m water column. The alveolata group was the most abundant in terms of sequence number and diversity (696 OTUs). The majority of alveolata sequences were affiliated to Dinophyceae and to two major groups of marine alveolates (MALV-I and MALV-II). In the upper 180 m, only 13% of theOTUs were shared between of the fertilized stations and the reference site characterized by high-nutrient low-chlorophyll (HNLC) waters. Fungi and Cerco-zoa were present in iron-fertilized waters, but almost absent in the HNLC samples, while Haptophyta and Chlorophyta characterized the HNLC sample. Finally, the 300m depth samples of all stations were differentiated by the presence of MALV-II and Radiolaria. Multivariate analysis, examining the level of similarity between different samples, showed that protistan assemblages differed significantly between the HNLC and iron-fertilized stations, but also between the diverse iron-fertilized blooms. |
format |
Text |
author |
Georges, C. Monchy, S. Genitsaris, S. Christaki, U. |
author_facet |
Georges, C. Monchy, S. Genitsaris, S. Christaki, U. |
author_sort |
Georges, C. |
title |
Protist community composition during early phytoplankton blooms in the naturally iron-fertilized Kerguelen area (Southern Ocean) |
title_short |
Protist community composition during early phytoplankton blooms in the naturally iron-fertilized Kerguelen area (Southern Ocean) |
title_full |
Protist community composition during early phytoplankton blooms in the naturally iron-fertilized Kerguelen area (Southern Ocean) |
title_fullStr |
Protist community composition during early phytoplankton blooms in the naturally iron-fertilized Kerguelen area (Southern Ocean) |
title_full_unstemmed |
Protist community composition during early phytoplankton blooms in the naturally iron-fertilized Kerguelen area (Southern Ocean) |
title_sort |
protist community composition during early phytoplankton blooms in the naturally iron-fertilized kerguelen area (southern ocean) |
publisher |
Copernicus Gesellschaft Mbh |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-5847-2014 https://archimer.ifremer.fr/doc/00291/40221/38694.pdf https://archimer.ifremer.fr/doc/00291/40221/38695.pdf https://archimer.ifremer.fr/doc/00291/40221/48215.pdf https://archimer.ifremer.fr/doc/00291/40221/48216.pdf https://archimer.ifremer.fr/doc/00291/40221/ |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Kerguelen Kerguelen Island Southern Ocean |
geographic_facet |
Kerguelen Kerguelen Island Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Archimer, archive institutionnelle de l'Ifremer Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2014-10-21 , Vol. 11 , N. 20 , P. 5847-5863 |
op_relation |
doi:10.5194/bg-11-5847-2014 10670/1.xju5rn https://archimer.ifremer.fr/doc/00291/40221/38694.pdf https://archimer.ifremer.fr/doc/00291/40221/38695.pdf https://archimer.ifremer.fr/doc/00291/40221/48215.pdf https://archimer.ifremer.fr/doc/00291/40221/48216.pdf https://archimer.ifremer.fr/doc/00291/40221/ |
op_rights |
lic_creative-commons other |
op_doi |
https://doi.org/10.5194/bg-11-5847-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
20 |
container_start_page |
5847 |
op_container_end_page |
5863 |
_version_ |
1766206167852253184 |