Biogeography of the Southern Ocean: environmental factors driving mesoplankton distribution South of Africa
Spatial distribution of zooplankton communities depends on numerous factors, especially temperature and salinity conditions (hydrological factor), sampled depth, chlorophyll concentration, and diel cycle. We analyzed and compared the impact of these factors on mesoplankton abundance, biodiversity, q...
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ftpubmed:oai:pubmedcentral.nih.gov:8117931 2023-05-15T13:43:44+02:00 Biogeography of the Southern Ocean: environmental factors driving mesoplankton distribution South of Africa Vereshchaka, Alexander Musaeva, Eteri Lunina, Anastasiia 2021-05-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8117931/ https://doi.org/10.7717/peerj.11411 en eng PeerJ Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8117931/ http://dx.doi.org/10.7717/peerj.11411 © 2021 Vereshchaka et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. CC-BY PeerJ Biodiversity Text 2021 ftpubmed https://doi.org/10.7717/peerj.11411 2021-05-23T00:31:20Z Spatial distribution of zooplankton communities depends on numerous factors, especially temperature and salinity conditions (hydrological factor), sampled depth, chlorophyll concentration, and diel cycle. We analyzed and compared the impact of these factors on mesoplankton abundance, biodiversity, quantitative structure based on proportion of taxa and qualitative structure based on presence/absence of taxa in the Southern Ocean. Samples (43 stations, three vertical strata sampled at each station, 163 taxa identified) were collected with a Juday net along the SR02 transect in December 2009. Mesoplankton abundance in discrete vertical layers ranged from 0.2 to 13,743.6 ind. m(−3), i.e., five orders of magnitude, maximal and minimal values were recorded in the upper mixed and in the deepest layer, respectively. Within the combined 300-m layer, abundances ranged from 16.0 to 1,455.0 ind. m(−3), i.e., two orders of magnitude suggesting that integral samples provide little information about actual variations of mesoplankton abundances. A set of analyses showed that depth was the major driver of mesoplankton distribution (abundance, biodiversity, quantitative structure), hydrological factors influenced two of them (quantitative and qualitative structure), chlorophyll concentration strongly affected only quantitative structure, and diel cycle had an insignificant effect on mesoplankton distribution. Using our current knowledge of the fine structure of the Antarctic Circumpolar Current, we compared effects of four hydrological fronts, i.e., boundaries between different water-masses with distinct environmental characteristics, and eight dynamic jets (narrow yet very intense currents) on mesoplankton distribution. Subtropical, Polar, and Subantarctic Fronts drove quantitative and qualitative structure of mesoplankton assemblages (decreasing in order of influence), while the Southern Boundary affected only qualitative structure. Effects of dynamic jets were insignificant. We suggest that mesoplankton composition is driven ... Text Antarc* Antarctic Southern Ocean PubMed Central (PMC) Antarctic Southern Ocean The Antarctic PeerJ 9 e11411 |
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Biodiversity Vereshchaka, Alexander Musaeva, Eteri Lunina, Anastasiia Biogeography of the Southern Ocean: environmental factors driving mesoplankton distribution South of Africa |
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Biodiversity |
description |
Spatial distribution of zooplankton communities depends on numerous factors, especially temperature and salinity conditions (hydrological factor), sampled depth, chlorophyll concentration, and diel cycle. We analyzed and compared the impact of these factors on mesoplankton abundance, biodiversity, quantitative structure based on proportion of taxa and qualitative structure based on presence/absence of taxa in the Southern Ocean. Samples (43 stations, three vertical strata sampled at each station, 163 taxa identified) were collected with a Juday net along the SR02 transect in December 2009. Mesoplankton abundance in discrete vertical layers ranged from 0.2 to 13,743.6 ind. m(−3), i.e., five orders of magnitude, maximal and minimal values were recorded in the upper mixed and in the deepest layer, respectively. Within the combined 300-m layer, abundances ranged from 16.0 to 1,455.0 ind. m(−3), i.e., two orders of magnitude suggesting that integral samples provide little information about actual variations of mesoplankton abundances. A set of analyses showed that depth was the major driver of mesoplankton distribution (abundance, biodiversity, quantitative structure), hydrological factors influenced two of them (quantitative and qualitative structure), chlorophyll concentration strongly affected only quantitative structure, and diel cycle had an insignificant effect on mesoplankton distribution. Using our current knowledge of the fine structure of the Antarctic Circumpolar Current, we compared effects of four hydrological fronts, i.e., boundaries between different water-masses with distinct environmental characteristics, and eight dynamic jets (narrow yet very intense currents) on mesoplankton distribution. Subtropical, Polar, and Subantarctic Fronts drove quantitative and qualitative structure of mesoplankton assemblages (decreasing in order of influence), while the Southern Boundary affected only qualitative structure. Effects of dynamic jets were insignificant. We suggest that mesoplankton composition is driven ... |
format |
Text |
author |
Vereshchaka, Alexander Musaeva, Eteri Lunina, Anastasiia |
author_facet |
Vereshchaka, Alexander Musaeva, Eteri Lunina, Anastasiia |
author_sort |
Vereshchaka, Alexander |
title |
Biogeography of the Southern Ocean: environmental factors driving mesoplankton distribution South of Africa |
title_short |
Biogeography of the Southern Ocean: environmental factors driving mesoplankton distribution South of Africa |
title_full |
Biogeography of the Southern Ocean: environmental factors driving mesoplankton distribution South of Africa |
title_fullStr |
Biogeography of the Southern Ocean: environmental factors driving mesoplankton distribution South of Africa |
title_full_unstemmed |
Biogeography of the Southern Ocean: environmental factors driving mesoplankton distribution South of Africa |
title_sort |
biogeography of the southern ocean: environmental factors driving mesoplankton distribution south of africa |
publisher |
PeerJ Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8117931/ https://doi.org/10.7717/peerj.11411 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
PeerJ |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8117931/ http://dx.doi.org/10.7717/peerj.11411 |
op_rights |
© 2021 Vereshchaka et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
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CC-BY |
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https://doi.org/10.7717/peerj.11411 |
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e11411 |
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