The Impact of Sea Ice Loss on Benthic Communities of the Makarov Strait (Northeastern Barents Sea)
The continental shelf of the northeastern Barents Sea is presently experiencing a weak influx of Atlantic water from the west. In recent times, warming in Arctic regions has led to an increase in extended ice-free periods in this area, instead of significantly elevating water temperatures. The impli...
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ftmdpi:oai:mdpi.com:/2076-2615/13/14/2320/ 2023-08-20T04:04:50+02:00 The Impact of Sea Ice Loss on Benthic Communities of the Makarov Strait (Northeastern Barents Sea) Lyudmila V. Pavlova Alexander G. Dvoretsky Alexander A. Frolov Olga L. Zimina Olga Yu. Evseeva Dinara R. Dikaeva Zinaida Yu. Rumyantseva Ninel N. Panteleeva agris 2023-07-15 application/pdf https://doi.org/10.3390/ani13142320 EN eng Multidisciplinary Digital Publishing Institute Aquatic Animals https://dx.doi.org/10.3390/ani13142320 https://creativecommons.org/licenses/by/4.0/ Animals; Volume 13; Issue 14; Pages: 2320 macrozoobenthos environmental factors sea ice extent Barents Sea Makarov Strait St. Anna Trough Text 2023 ftmdpi https://doi.org/10.3390/ani13142320 2023-08-01T10:52:56Z The continental shelf of the northeastern Barents Sea is presently experiencing a weak influx of Atlantic water from the west. In recent times, warming in Arctic regions has led to an increase in extended ice-free periods in this area, instead of significantly elevating water temperatures. The implications of this phenomenon on the structure and functioning of benthic communities were investigated during the autumn of 2019 within the Makarov Strait, located in the southwestern part of the St. Anna Trough. The macrozoobenthic communities exhibited a clear connection with the duration of ice-free periods. This variable influenced a vertical carbon flux, which subsequently served as the primary predictor for faunal abundance and diversity, as demonstrated by redundancy and correlation analyses. Two faunal groups were identified, corresponding to short and long open-water periods. Both groups had similar alpha diversity (65 ± 6 and 61 ± 9 species per station) and biomasses (39 ± 13 and 47 ± 13 g m−2) but displayed differing abundances (1140 ± 100 vs. 4070 ± 790 ind. m−2) and other diversity indices. We observed a decline in the proportion of polychaetes, accompanied by an increase in the proportion and diversity of bivalves, as well as a rise in the abundance of infaunal species, sub-surface deposit feeders, and mobile suspension feeders, in response to the increasing vertical carbon flux. The potential increase in anthropogenic pressures related to oil development in the northeastern Barents Sea highlights the importance of our study for conservation and monitoring efforts in the region. Text Arctic Barents Sea Sea ice MDPI Open Access Publishing Arctic Barents Sea St. Anna Trough ENVELOPE(69.500,69.500,80.750,80.750) Animals 13 14 2320 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
macrozoobenthos environmental factors sea ice extent Barents Sea Makarov Strait St. Anna Trough |
spellingShingle |
macrozoobenthos environmental factors sea ice extent Barents Sea Makarov Strait St. Anna Trough Lyudmila V. Pavlova Alexander G. Dvoretsky Alexander A. Frolov Olga L. Zimina Olga Yu. Evseeva Dinara R. Dikaeva Zinaida Yu. Rumyantseva Ninel N. Panteleeva The Impact of Sea Ice Loss on Benthic Communities of the Makarov Strait (Northeastern Barents Sea) |
topic_facet |
macrozoobenthos environmental factors sea ice extent Barents Sea Makarov Strait St. Anna Trough |
description |
The continental shelf of the northeastern Barents Sea is presently experiencing a weak influx of Atlantic water from the west. In recent times, warming in Arctic regions has led to an increase in extended ice-free periods in this area, instead of significantly elevating water temperatures. The implications of this phenomenon on the structure and functioning of benthic communities were investigated during the autumn of 2019 within the Makarov Strait, located in the southwestern part of the St. Anna Trough. The macrozoobenthic communities exhibited a clear connection with the duration of ice-free periods. This variable influenced a vertical carbon flux, which subsequently served as the primary predictor for faunal abundance and diversity, as demonstrated by redundancy and correlation analyses. Two faunal groups were identified, corresponding to short and long open-water periods. Both groups had similar alpha diversity (65 ± 6 and 61 ± 9 species per station) and biomasses (39 ± 13 and 47 ± 13 g m−2) but displayed differing abundances (1140 ± 100 vs. 4070 ± 790 ind. m−2) and other diversity indices. We observed a decline in the proportion of polychaetes, accompanied by an increase in the proportion and diversity of bivalves, as well as a rise in the abundance of infaunal species, sub-surface deposit feeders, and mobile suspension feeders, in response to the increasing vertical carbon flux. The potential increase in anthropogenic pressures related to oil development in the northeastern Barents Sea highlights the importance of our study for conservation and monitoring efforts in the region. |
format |
Text |
author |
Lyudmila V. Pavlova Alexander G. Dvoretsky Alexander A. Frolov Olga L. Zimina Olga Yu. Evseeva Dinara R. Dikaeva Zinaida Yu. Rumyantseva Ninel N. Panteleeva |
author_facet |
Lyudmila V. Pavlova Alexander G. Dvoretsky Alexander A. Frolov Olga L. Zimina Olga Yu. Evseeva Dinara R. Dikaeva Zinaida Yu. Rumyantseva Ninel N. Panteleeva |
author_sort |
Lyudmila V. Pavlova |
title |
The Impact of Sea Ice Loss on Benthic Communities of the Makarov Strait (Northeastern Barents Sea) |
title_short |
The Impact of Sea Ice Loss on Benthic Communities of the Makarov Strait (Northeastern Barents Sea) |
title_full |
The Impact of Sea Ice Loss on Benthic Communities of the Makarov Strait (Northeastern Barents Sea) |
title_fullStr |
The Impact of Sea Ice Loss on Benthic Communities of the Makarov Strait (Northeastern Barents Sea) |
title_full_unstemmed |
The Impact of Sea Ice Loss on Benthic Communities of the Makarov Strait (Northeastern Barents Sea) |
title_sort |
impact of sea ice loss on benthic communities of the makarov strait (northeastern barents sea) |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/ani13142320 |
op_coverage |
agris |
long_lat |
ENVELOPE(69.500,69.500,80.750,80.750) |
geographic |
Arctic Barents Sea St. Anna Trough |
geographic_facet |
Arctic Barents Sea St. Anna Trough |
genre |
Arctic Barents Sea Sea ice |
genre_facet |
Arctic Barents Sea Sea ice |
op_source |
Animals; Volume 13; Issue 14; Pages: 2320 |
op_relation |
Aquatic Animals https://dx.doi.org/10.3390/ani13142320 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ani13142320 |
container_title |
Animals |
container_volume |
13 |
container_issue |
14 |
container_start_page |
2320 |
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1774715229861576704 |