Impact of multiple stressors on sea bed fauna in a warming Arctic
The Arctic Barents Sea is experiencing a record temperature increase, a poleward shift in the distributions of commercial fish stocks, and invasion by the snow crab, a new predator. To evaluate benthic community vulnerability when exposed to seawater warming, bottom trawling, and predation from a ne...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/2600103 https://doi.org/10.3354/meps12803 |
id |
ftimr:oai:imr.brage.unit.no:11250/2600103 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/2600103 2023-05-15T14:59:52+02:00 Impact of multiple stressors on sea bed fauna in a warming Arctic Jørgensen, Lis Lindal Primicerio, Raul Ingvaldsen, Randi Brunvær Fossheim, Maria Strelkova, Natalia Thangstad, Trude Hauge Manushin, Igor Zakharov, Denis 2019 application/pdf http://hdl.handle.net/11250/2600103 https://doi.org/10.3354/meps12803 eng eng Marine Ecology Progress Series. 2019, 608 1-12. urn:issn:0171-8630 http://hdl.handle.net/11250/2600103 https://doi.org/10.3354/meps12803 cristin:1691930 1-12 608 Marine Ecology Progress Series Journal article Peer reviewed 2019 ftimr https://doi.org/10.3354/meps12803 2021-09-23T20:14:48Z The Arctic Barents Sea is experiencing a record temperature increase, a poleward shift in the distributions of commercial fish stocks, and invasion by the snow crab, a new predator. To evaluate benthic community vulnerability when exposed to seawater warming, bottom trawling, and predation from a new predator, we used a trait-based approach and applied this to an extensive dataset of >450 megabenthic taxa, from a 1.5 million km2 area. Taxon rank values were obtained after sorting the taxa by temperature median and temperature range, i.e. the temperature sensitivity trait, and by body height, mean weight, and mobility, i.e. the trawl vulnerability trait, and were given as a size-based prey classification, i.e. the predation trait. The taxon rank values were then used to calculate the mean community sensitivity. Our study showed a recent significant increase in community mean temperature ranks, indicating an increased importance of species with affinity for warmer waters and a reduced importance of coldwater species. Commercial fish stocks and snow crabs are expanding into the western part of the Barents Sea, thereby simultaneously increasing the exposure of large immobile species to trawling and of small prey species to crab predation. Overall, we found a high level of vulnerability to the 3 investigated stressors in the northwestern Barents Sea, which may lead to alterations in community structure and diversity. Mapping vulnerability to multiple stressors enables authorities managing human activities to identify vulnerable areas that warrant special measures, including protection from trawling and reduction of the snow crab stock. publishedVersion Article in Journal/Newspaper Arctic Barents Sea Snow crab Institute for Marine Research: Brage IMR Arctic Barents Sea Marine Ecology Progress Series 608 1 12 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
The Arctic Barents Sea is experiencing a record temperature increase, a poleward shift in the distributions of commercial fish stocks, and invasion by the snow crab, a new predator. To evaluate benthic community vulnerability when exposed to seawater warming, bottom trawling, and predation from a new predator, we used a trait-based approach and applied this to an extensive dataset of >450 megabenthic taxa, from a 1.5 million km2 area. Taxon rank values were obtained after sorting the taxa by temperature median and temperature range, i.e. the temperature sensitivity trait, and by body height, mean weight, and mobility, i.e. the trawl vulnerability trait, and were given as a size-based prey classification, i.e. the predation trait. The taxon rank values were then used to calculate the mean community sensitivity. Our study showed a recent significant increase in community mean temperature ranks, indicating an increased importance of species with affinity for warmer waters and a reduced importance of coldwater species. Commercial fish stocks and snow crabs are expanding into the western part of the Barents Sea, thereby simultaneously increasing the exposure of large immobile species to trawling and of small prey species to crab predation. Overall, we found a high level of vulnerability to the 3 investigated stressors in the northwestern Barents Sea, which may lead to alterations in community structure and diversity. Mapping vulnerability to multiple stressors enables authorities managing human activities to identify vulnerable areas that warrant special measures, including protection from trawling and reduction of the snow crab stock. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Jørgensen, Lis Lindal Primicerio, Raul Ingvaldsen, Randi Brunvær Fossheim, Maria Strelkova, Natalia Thangstad, Trude Hauge Manushin, Igor Zakharov, Denis |
spellingShingle |
Jørgensen, Lis Lindal Primicerio, Raul Ingvaldsen, Randi Brunvær Fossheim, Maria Strelkova, Natalia Thangstad, Trude Hauge Manushin, Igor Zakharov, Denis Impact of multiple stressors on sea bed fauna in a warming Arctic |
author_facet |
Jørgensen, Lis Lindal Primicerio, Raul Ingvaldsen, Randi Brunvær Fossheim, Maria Strelkova, Natalia Thangstad, Trude Hauge Manushin, Igor Zakharov, Denis |
author_sort |
Jørgensen, Lis Lindal |
title |
Impact of multiple stressors on sea bed fauna in a warming Arctic |
title_short |
Impact of multiple stressors on sea bed fauna in a warming Arctic |
title_full |
Impact of multiple stressors on sea bed fauna in a warming Arctic |
title_fullStr |
Impact of multiple stressors on sea bed fauna in a warming Arctic |
title_full_unstemmed |
Impact of multiple stressors on sea bed fauna in a warming Arctic |
title_sort |
impact of multiple stressors on sea bed fauna in a warming arctic |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2600103 https://doi.org/10.3354/meps12803 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Snow crab |
genre_facet |
Arctic Barents Sea Snow crab |
op_source |
1-12 608 Marine Ecology Progress Series |
op_relation |
Marine Ecology Progress Series. 2019, 608 1-12. urn:issn:0171-8630 http://hdl.handle.net/11250/2600103 https://doi.org/10.3354/meps12803 cristin:1691930 |
op_doi |
https://doi.org/10.3354/meps12803 |
container_title |
Marine Ecology Progress Series |
container_volume |
608 |
container_start_page |
1 |
op_container_end_page |
12 |
_version_ |
1766331988651802624 |