Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea
Climate change is influencing some environmental variables in the Southern Ocean (SO) and this will have an effect on the marine biodiversity. Peracarid crustaceans are one of the dominant and most species-rich groups of the SO benthos. To date, our knowledge on the influence of environmental variab...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/527500/ https://nora.nerc.ac.uk/id/eprint/527500/1/fmars-07-554663.pdf https://www.frontiersin.org/article/10.3389/fmars.2020.554663 |
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ftnerc:oai:nora.nerc.ac.uk:527500 2023-05-15T13:41:45+02:00 Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea Di Franco, Davide Linse, Katrin Griffiths, Huw Haas, Christian Saeedi, Hanieh Brandt, Angelika 2020-10-07 text http://nora.nerc.ac.uk/id/eprint/527500/ https://nora.nerc.ac.uk/id/eprint/527500/1/fmars-07-554663.pdf https://www.frontiersin.org/article/10.3389/fmars.2020.554663 en eng Frontiers Media S.A. https://nora.nerc.ac.uk/id/eprint/527500/1/fmars-07-554663.pdf Di Franco, Davide; Linse, Katrin orcid:0000-0003-3477-3047 Griffiths, Huw orcid:0000-0003-1764-223X Haas, Christian; Saeedi, Hanieh; Brandt, Angelika. 2020 Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea. Frontiers in Marine Science, 7, 554663. https://doi.org/10.3389/fmars.2020.554663 <https://doi.org/10.3389/fmars.2020.554663> cc_by_4 CC-BY Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.3389/fmars.2020.554663 2023-02-04T19:50:31Z Climate change is influencing some environmental variables in the Southern Ocean (SO) and this will have an effect on the marine biodiversity. Peracarid crustaceans are one of the dominant and most species-rich groups of the SO benthos. To date, our knowledge on the influence of environmental variables in shaping abundance and species composition in the SO’s peracarid assemblages is limited, and with regard to ice coverage it is unknown. The aim of our study was to assess the influence of sea ice coverage, chlorophyll-a, and phytoplankton concentrations on abundance, distribution and assemblage structure of peracarids. In addition, the influence of other physical parameters on peracarid abundance was assessed, including depth, temperature, salinity, sediment type, current velocity, oxygen, iron, nitrate, silicate and phosphate. Peracarids were sampled with an epibenthic sledge (EBS) in different areas of the Atlantic sector of the SO and in the Weddell Sea. Sampling areas were characterized by different regimes of ice coverage (the ice free South Orkney Islands, the seasonally ice-covered Filchner Trough and the Eastern Antarctic Peninsula including the Prince Gustav Channel which was formerly covered by a perennial ice shelf). In total 64766 individuals of peracarids were collected and identified to order level including five orders: Amphipoda, Cumacea, Isopoda, Mysidacea, and Tanaidacea. Amphipoda was the most abundant taxon, representing 32% of the overall abundances, followed by Cumacea (31%), Isopoda (29%), Mysidacea (4%), and Tanaidacea (4%). The Filchner Trough had the highest abundance of peracarids, while the South Orkney Islands showed the lowest abundance compared to other areas. Ice coverage was the main environmental driver shaping the abundance pattern and assemblage structure of peracarids and the latter were positively correlated with ice coverage and chlorophyll-a concentration. We propose that the positive correlation between sea ice and peracarid abundances is likely due to phytoplankton ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ice Shelf Sea ice South Orkney Islands Southern Ocean Weddell Sea Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Antarctic Peninsula Weddell Sea Weddell South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Filchner Trough ENVELOPE(-36.000,-36.000,-77.000,-77.000) Prince Gustav Channel ENVELOPE(-58.250,-58.250,-63.833,-63.833) Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Climate change is influencing some environmental variables in the Southern Ocean (SO) and this will have an effect on the marine biodiversity. Peracarid crustaceans are one of the dominant and most species-rich groups of the SO benthos. To date, our knowledge on the influence of environmental variables in shaping abundance and species composition in the SO’s peracarid assemblages is limited, and with regard to ice coverage it is unknown. The aim of our study was to assess the influence of sea ice coverage, chlorophyll-a, and phytoplankton concentrations on abundance, distribution and assemblage structure of peracarids. In addition, the influence of other physical parameters on peracarid abundance was assessed, including depth, temperature, salinity, sediment type, current velocity, oxygen, iron, nitrate, silicate and phosphate. Peracarids were sampled with an epibenthic sledge (EBS) in different areas of the Atlantic sector of the SO and in the Weddell Sea. Sampling areas were characterized by different regimes of ice coverage (the ice free South Orkney Islands, the seasonally ice-covered Filchner Trough and the Eastern Antarctic Peninsula including the Prince Gustav Channel which was formerly covered by a perennial ice shelf). In total 64766 individuals of peracarids were collected and identified to order level including five orders: Amphipoda, Cumacea, Isopoda, Mysidacea, and Tanaidacea. Amphipoda was the most abundant taxon, representing 32% of the overall abundances, followed by Cumacea (31%), Isopoda (29%), Mysidacea (4%), and Tanaidacea (4%). The Filchner Trough had the highest abundance of peracarids, while the South Orkney Islands showed the lowest abundance compared to other areas. Ice coverage was the main environmental driver shaping the abundance pattern and assemblage structure of peracarids and the latter were positively correlated with ice coverage and chlorophyll-a concentration. We propose that the positive correlation between sea ice and peracarid abundances is likely due to phytoplankton ... |
format |
Article in Journal/Newspaper |
author |
Di Franco, Davide Linse, Katrin Griffiths, Huw Haas, Christian Saeedi, Hanieh Brandt, Angelika |
spellingShingle |
Di Franco, Davide Linse, Katrin Griffiths, Huw Haas, Christian Saeedi, Hanieh Brandt, Angelika Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea |
author_facet |
Di Franco, Davide Linse, Katrin Griffiths, Huw Haas, Christian Saeedi, Hanieh Brandt, Angelika |
author_sort |
Di Franco, Davide |
title |
Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea |
title_short |
Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea |
title_full |
Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea |
title_fullStr |
Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea |
title_full_unstemmed |
Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea |
title_sort |
abundance and distributional patterns of benthic peracarid crustaceans from the atlantic sector of the southern ocean and weddell sea |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/527500/ https://nora.nerc.ac.uk/id/eprint/527500/1/fmars-07-554663.pdf https://www.frontiersin.org/article/10.3389/fmars.2020.554663 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) ENVELOPE(-36.000,-36.000,-77.000,-77.000) ENVELOPE(-58.250,-58.250,-63.833,-63.833) |
geographic |
Antarctic Southern Ocean Antarctic Peninsula Weddell Sea Weddell South Orkney Islands Filchner Trough Prince Gustav Channel |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula Weddell Sea Weddell South Orkney Islands Filchner Trough Prince Gustav Channel |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Shelf Sea ice South Orkney Islands Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Shelf Sea ice South Orkney Islands Southern Ocean Weddell Sea |
op_relation |
https://nora.nerc.ac.uk/id/eprint/527500/1/fmars-07-554663.pdf Di Franco, Davide; Linse, Katrin orcid:0000-0003-3477-3047 Griffiths, Huw orcid:0000-0003-1764-223X Haas, Christian; Saeedi, Hanieh; Brandt, Angelika. 2020 Abundance and distributional patterns of benthic peracarid crustaceans from the Atlantic sector of the Southern Ocean and Weddell Sea. Frontiers in Marine Science, 7, 554663. https://doi.org/10.3389/fmars.2020.554663 <https://doi.org/10.3389/fmars.2020.554663> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2020.554663 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
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1766156808203796480 |