Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea
The Southern Ocean (SO) continental shelf and deep sea are environments characterised by different benthic communities. Their structure and composition are driven and shaped by different variables: whilst on the continental shelf physical environmental variables are the main drivers shaping faunal a...
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ftdoajarticles:oai:doaj.org/article:b890cee82493481c92a195bd5e26b46a 2023-05-15T18:25:16+02:00 Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea Davide Di Franco Katrin Linse Huw J. Griffiths Angelika Brandt 2021-09-01T00:00:00Z https://doi.org/10.1016/j.ecolind.2021.107832 https://doaj.org/article/b890cee82493481c92a195bd5e26b46a EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S1470160X21004970 https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2021.107832 https://doaj.org/article/b890cee82493481c92a195bd5e26b46a Ecological Indicators, Vol 128, Iss , Pp 107832- (2021) Macrobenthos Environmental factors Benthic environment Marine invertebrates Peracarida Depth Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1016/j.ecolind.2021.107832 2022-12-31T11:22:50Z The Southern Ocean (SO) continental shelf and deep sea are environments characterised by different benthic communities. Their structure and composition are driven and shaped by different variables: whilst on the continental shelf physical environmental variables are the main drivers shaping faunal abundance, structure and composition, the deep-sea fauna is most problably driven by biological variables such as predation and competition. Among shelf and deep-sea benthic communities, peracarids (e.g. amphipods and isopods) are one of the most dominant groups, showing high levels of abundance and diversity in both environments. Knowledge on their assemblage structure and composition in the SO remains limited, as well as the knowledge of the environmental variables that influence them. Therefore, the aim of our study was to investigate peracarid assemblages from the SO continental shelf and deep sea and to assess the main drivers shaping their assemblage structure along a wide bathymetric gradient (from 160 m to about 6000 m depth) and at a large geographic scale. We analysed the spatial distribution of 183,606 peracarids sampled using an epibenthic sledge (EBS) during nine different expeditions in the SO, covering a latitudinal range of 77° to 41° South. Depth was identified as the main driver shaping peracarid abundance pattern, their assemblage structure from the continental shelf (<1499 m) was dissimilar to that from the deep sea (>1500 m). Also, depth was differently correlated with different peracarid orders: while isopod abundances increased with depth, amphipods and mysids were negatively correlated; no correlation was found with cumaceans and tanaidaceans. The dissimilar peracarid assemblage structure between the SO continental shelf and the SO deep sea can be due to the assumption that there are different driving forces shaping benthic assemblages from these two environments (physical variables on the continental shelf, biological interactions in the deep sea). As a result, we also suggest that ... Article in Journal/Newspaper Southern Ocean Directory of Open Access Journals: DOAJ Articles Southern Ocean Ecological Indicators 128 107832 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Macrobenthos Environmental factors Benthic environment Marine invertebrates Peracarida Depth Ecology QH540-549.5 |
spellingShingle |
Macrobenthos Environmental factors Benthic environment Marine invertebrates Peracarida Depth Ecology QH540-549.5 Davide Di Franco Katrin Linse Huw J. Griffiths Angelika Brandt Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea |
topic_facet |
Macrobenthos Environmental factors Benthic environment Marine invertebrates Peracarida Depth Ecology QH540-549.5 |
description |
The Southern Ocean (SO) continental shelf and deep sea are environments characterised by different benthic communities. Their structure and composition are driven and shaped by different variables: whilst on the continental shelf physical environmental variables are the main drivers shaping faunal abundance, structure and composition, the deep-sea fauna is most problably driven by biological variables such as predation and competition. Among shelf and deep-sea benthic communities, peracarids (e.g. amphipods and isopods) are one of the most dominant groups, showing high levels of abundance and diversity in both environments. Knowledge on their assemblage structure and composition in the SO remains limited, as well as the knowledge of the environmental variables that influence them. Therefore, the aim of our study was to investigate peracarid assemblages from the SO continental shelf and deep sea and to assess the main drivers shaping their assemblage structure along a wide bathymetric gradient (from 160 m to about 6000 m depth) and at a large geographic scale. We analysed the spatial distribution of 183,606 peracarids sampled using an epibenthic sledge (EBS) during nine different expeditions in the SO, covering a latitudinal range of 77° to 41° South. Depth was identified as the main driver shaping peracarid abundance pattern, their assemblage structure from the continental shelf (<1499 m) was dissimilar to that from the deep sea (>1500 m). Also, depth was differently correlated with different peracarid orders: while isopod abundances increased with depth, amphipods and mysids were negatively correlated; no correlation was found with cumaceans and tanaidaceans. The dissimilar peracarid assemblage structure between the SO continental shelf and the SO deep sea can be due to the assumption that there are different driving forces shaping benthic assemblages from these two environments (physical variables on the continental shelf, biological interactions in the deep sea). As a result, we also suggest that ... |
format |
Article in Journal/Newspaper |
author |
Davide Di Franco Katrin Linse Huw J. Griffiths Angelika Brandt |
author_facet |
Davide Di Franco Katrin Linse Huw J. Griffiths Angelika Brandt |
author_sort |
Davide Di Franco |
title |
Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea |
title_short |
Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea |
title_full |
Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea |
title_fullStr |
Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea |
title_full_unstemmed |
Drivers of abundance and spatial distribution in Southern Ocean peracarid crustacea |
title_sort |
drivers of abundance and spatial distribution in southern ocean peracarid crustacea |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.ecolind.2021.107832 https://doaj.org/article/b890cee82493481c92a195bd5e26b46a |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Ecological Indicators, Vol 128, Iss , Pp 107832- (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1470160X21004970 https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2021.107832 https://doaj.org/article/b890cee82493481c92a195bd5e26b46a |
op_doi |
https://doi.org/10.1016/j.ecolind.2021.107832 |
container_title |
Ecological Indicators |
container_volume |
128 |
container_start_page |
107832 |
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1766206596250075136 |