Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau
This study aimed to obtain the first estimates of S. thompsoni population dynamics and growth rates over the Kerguelen Plateau (Southern Indian Ocean). Micronekton, including salps, were repeatedly sampled during late summer to early autumn (26th February – 15th March 2018) at contrasting hydrologic...
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ftarchimer:oai:archimer.ifremer.fr:77147 2023-05-15T13:47:37+02:00 Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau Henschke, Natasha Blain, Stéphane Cherel, Yves Cotte, Cedric Espinasse, Boris Hunt, Brian P.v. Pakhomov, Evgeny A. 2021-02 application/pdf https://archimer.ifremer.fr/doc/00659/77147/78474.pdf https://doi.org/10.1016/j.jmarsys.2020.103489 https://archimer.ifremer.fr/doc/00659/77147/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00659/77147/78474.pdf doi:10.1016/j.jmarsys.2020.103489 https://archimer.ifremer.fr/doc/00659/77147/ info:eu-repo/semantics/openAccess restricted use Journal Of Marine Systems (0924-7963) (Elsevier BV), 2021-02 , Vol. 214 , P. 103489 (10p.) text Publication info:eu-repo/semantics/article 2021 ftarchimer https://doi.org/10.1016/j.jmarsys.2020.103489 2021-11-23T23:50:09Z This study aimed to obtain the first estimates of S. thompsoni population dynamics and growth rates over the Kerguelen Plateau (Southern Indian Ocean). Micronekton, including salps, were repeatedly sampled during late summer to early autumn (26th February – 15th March 2018) at contrasting hydrological stations on the Kerguelen Plateau in the southern proximity of Kerguelen Islands. At two stations, S. thompsoni made up almost half of the micronekton biomass. Environmental conditions were important in determining the density and development of S. thompsoni populations. Growth rates (0.5–7.0% d−1) were higher than previously reported from the Antarctic Peninsula (0.3–4.6% d−1) but lower than near the Antarctic Polar Front (APF; 3.7–20.7% d−1). Despite warm surface waters (4–5 °C), low chlorophyll a concentrations restricted the salp populations from growing as fast as populations near the APF. Because the Kerguelen Plateau region deflects a branch of warm water southward towards Antarctica, more studies of S. thompsoni population dynamics across multiple seasons are needed to fully understand their importance over the Kerguelen Plateau and their invasion potential into higher latitudes. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Kerguelen Islands Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Antarctic Peninsula Indian Kerguelen Kerguelen Islands The Antarctic Journal of Marine Systems 214 103489 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
This study aimed to obtain the first estimates of S. thompsoni population dynamics and growth rates over the Kerguelen Plateau (Southern Indian Ocean). Micronekton, including salps, were repeatedly sampled during late summer to early autumn (26th February – 15th March 2018) at contrasting hydrological stations on the Kerguelen Plateau in the southern proximity of Kerguelen Islands. At two stations, S. thompsoni made up almost half of the micronekton biomass. Environmental conditions were important in determining the density and development of S. thompsoni populations. Growth rates (0.5–7.0% d−1) were higher than previously reported from the Antarctic Peninsula (0.3–4.6% d−1) but lower than near the Antarctic Polar Front (APF; 3.7–20.7% d−1). Despite warm surface waters (4–5 °C), low chlorophyll a concentrations restricted the salp populations from growing as fast as populations near the APF. Because the Kerguelen Plateau region deflects a branch of warm water southward towards Antarctica, more studies of S. thompsoni population dynamics across multiple seasons are needed to fully understand their importance over the Kerguelen Plateau and their invasion potential into higher latitudes. |
format |
Article in Journal/Newspaper |
author |
Henschke, Natasha Blain, Stéphane Cherel, Yves Cotte, Cedric Espinasse, Boris Hunt, Brian P.v. Pakhomov, Evgeny A. |
spellingShingle |
Henschke, Natasha Blain, Stéphane Cherel, Yves Cotte, Cedric Espinasse, Boris Hunt, Brian P.v. Pakhomov, Evgeny A. Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau |
author_facet |
Henschke, Natasha Blain, Stéphane Cherel, Yves Cotte, Cedric Espinasse, Boris Hunt, Brian P.v. Pakhomov, Evgeny A. |
author_sort |
Henschke, Natasha |
title |
Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau |
title_short |
Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau |
title_full |
Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau |
title_fullStr |
Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau |
title_full_unstemmed |
Population demographics and growth rate of Salpa thompsoni on the Kerguelen Plateau |
title_sort |
population demographics and growth rate of salpa thompsoni on the kerguelen plateau |
publisher |
Elsevier BV |
publishDate |
2021 |
url |
https://archimer.ifremer.fr/doc/00659/77147/78474.pdf https://doi.org/10.1016/j.jmarsys.2020.103489 https://archimer.ifremer.fr/doc/00659/77147/ |
geographic |
Antarctic Antarctic Peninsula Indian Kerguelen Kerguelen Islands The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Indian Kerguelen Kerguelen Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Kerguelen Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Kerguelen Islands |
op_source |
Journal Of Marine Systems (0924-7963) (Elsevier BV), 2021-02 , Vol. 214 , P. 103489 (10p.) |
op_relation |
https://archimer.ifremer.fr/doc/00659/77147/78474.pdf doi:10.1016/j.jmarsys.2020.103489 https://archimer.ifremer.fr/doc/00659/77147/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.jmarsys.2020.103489 |
container_title |
Journal of Marine Systems |
container_volume |
214 |
container_start_page |
103489 |
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1766247528391507968 |