Zooplankton vertical stratification in the East-pacific and Indian sectors of the Southern Ocean
IntroductionIn the Southern Ocean, the large-scale distribution of zooplankton, including their abundance and community composition from the epipelagic to the upper bathypelagic layers, remains poorly understood. This gap in knowledge limits our comprehension of their ecological and biogeochemical r...
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ftdoajarticles:oai:doaj.org/article:0e96318aba344f3ca4b7976cb78f0541 2024-09-30T14:26:12+00:00 Zooplankton vertical stratification in the East-pacific and Indian sectors of the Southern Ocean Yunzhe Liu Yanqing Wang Yongming Sun Guang Yang Kerrie M. Swadling 2024-09-01T00:00:00Z https://doi.org/10.3389/fmars.2024.1274582 https://doaj.org/article/0e96318aba344f3ca4b7976cb78f0541 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2024.1274582/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2024.1274582 https://doaj.org/article/0e96318aba344f3ca4b7976cb78f0541 Frontiers in Marine Science, Vol 11 (2024) mesozooplankton vertical distribution Antarctic Surface Water Circumpolar Deep Water Antarctic zooplankton survey planktonic food webs Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2024 ftdoajarticles https://doi.org/10.3389/fmars.2024.1274582 2024-09-17T16:00:46Z IntroductionIn the Southern Ocean, the large-scale distribution of zooplankton, including their abundance and community composition from the epipelagic to the upper bathypelagic layers, remains poorly understood. This gap in knowledge limits our comprehension of their ecological and biogeochemical roles.MethodsTo better understand their community structure, depth-stratified zooplankton samples were collected from 0 to 1500 m during four summers in the East-Pacific and Indian sectors of the Southern Ocean. In addition, analysis of environmental drivers including temperature, salinity, dissolved oxygen, and chlorophyll a concentration, as well as water masses was conducted.ResultsOur study indicates that zooplankton diversity may be similar between the two sectors, while zooplankton abundance was higher in the East-Pacific sector during different sampling months and years. Moreover, zooplankton abundance decreased with depth in both sectors. Based on cluster analysis, zooplankton communities were generally divided by either the epipelagic or the deeper layers’ communities. In both sectors, the epipelagic layer was dominated by cyclopoid copepods, such as Oithona similis and Oncaea curvata, as well as calanoid copepods including Calanoides acutus, Rhincalanus gigas, and Ctenocalanus citer, while copepods and other taxa including Chaetognatha, Amphipoda, and Ostracoda, were important contributors to the deep layer communities.DiscussionOur analysis revealed that water masses, combined with their physical characteristics such as specific temperature and salinity ranges and depth, along with biological factors such as chlorophyll a concentration, might be the most important drivers for structuring zooplankton communities from epipelagic to upper bathypelagic layer. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Copepods Directory of Open Access Journals: DOAJ Articles Antarctic Indian Pacific Southern Ocean Frontiers in Marine Science 11 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
mesozooplankton vertical distribution Antarctic Surface Water Circumpolar Deep Water Antarctic zooplankton survey planktonic food webs Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
mesozooplankton vertical distribution Antarctic Surface Water Circumpolar Deep Water Antarctic zooplankton survey planktonic food webs Science Q General. Including nature conservation geographical distribution QH1-199.5 Yunzhe Liu Yanqing Wang Yongming Sun Guang Yang Kerrie M. Swadling Zooplankton vertical stratification in the East-pacific and Indian sectors of the Southern Ocean |
topic_facet |
mesozooplankton vertical distribution Antarctic Surface Water Circumpolar Deep Water Antarctic zooplankton survey planktonic food webs Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
IntroductionIn the Southern Ocean, the large-scale distribution of zooplankton, including their abundance and community composition from the epipelagic to the upper bathypelagic layers, remains poorly understood. This gap in knowledge limits our comprehension of their ecological and biogeochemical roles.MethodsTo better understand their community structure, depth-stratified zooplankton samples were collected from 0 to 1500 m during four summers in the East-Pacific and Indian sectors of the Southern Ocean. In addition, analysis of environmental drivers including temperature, salinity, dissolved oxygen, and chlorophyll a concentration, as well as water masses was conducted.ResultsOur study indicates that zooplankton diversity may be similar between the two sectors, while zooplankton abundance was higher in the East-Pacific sector during different sampling months and years. Moreover, zooplankton abundance decreased with depth in both sectors. Based on cluster analysis, zooplankton communities were generally divided by either the epipelagic or the deeper layers’ communities. In both sectors, the epipelagic layer was dominated by cyclopoid copepods, such as Oithona similis and Oncaea curvata, as well as calanoid copepods including Calanoides acutus, Rhincalanus gigas, and Ctenocalanus citer, while copepods and other taxa including Chaetognatha, Amphipoda, and Ostracoda, were important contributors to the deep layer communities.DiscussionOur analysis revealed that water masses, combined with their physical characteristics such as specific temperature and salinity ranges and depth, along with biological factors such as chlorophyll a concentration, might be the most important drivers for structuring zooplankton communities from epipelagic to upper bathypelagic layer. |
format |
Article in Journal/Newspaper |
author |
Yunzhe Liu Yanqing Wang Yongming Sun Guang Yang Kerrie M. Swadling |
author_facet |
Yunzhe Liu Yanqing Wang Yongming Sun Guang Yang Kerrie M. Swadling |
author_sort |
Yunzhe Liu |
title |
Zooplankton vertical stratification in the East-pacific and Indian sectors of the Southern Ocean |
title_short |
Zooplankton vertical stratification in the East-pacific and Indian sectors of the Southern Ocean |
title_full |
Zooplankton vertical stratification in the East-pacific and Indian sectors of the Southern Ocean |
title_fullStr |
Zooplankton vertical stratification in the East-pacific and Indian sectors of the Southern Ocean |
title_full_unstemmed |
Zooplankton vertical stratification in the East-pacific and Indian sectors of the Southern Ocean |
title_sort |
zooplankton vertical stratification in the east-pacific and indian sectors of the southern ocean |
publisher |
Frontiers Media S.A. |
publishDate |
2024 |
url |
https://doi.org/10.3389/fmars.2024.1274582 https://doaj.org/article/0e96318aba344f3ca4b7976cb78f0541 |
geographic |
Antarctic Indian Pacific Southern Ocean |
geographic_facet |
Antarctic Indian Pacific Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Southern Ocean Copepods |
op_source |
Frontiers in Marine Science, Vol 11 (2024) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2024.1274582/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2024.1274582 https://doaj.org/article/0e96318aba344f3ca4b7976cb78f0541 |
op_doi |
https://doi.org/10.3389/fmars.2024.1274582 |
container_title |
Frontiers in Marine Science |
container_volume |
11 |
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1811646641397039104 |