Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords
In high latitude coastal regions, benthic scavenger communities are largely composed of invertebrates that play a key role in the cycling of organic matter. Factors including temperature and depth can structure Arctic and Subarctic fjord benthic communities, but the response of scavenging communitie...
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Online Access: | https://hdl.handle.net/10037/20121 https://doi.org/10.1007/s00300-020-02773-5 |
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ftunivtroemsoe:oai:munin.uit.no:10037/20121 2023-05-15T14:26:59+02:00 Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords Dunlop, Katherine Mary Renaud, Paul Eric Berge, Jørgen Jones, Daniel O.B. Harbour, Rob P. Tandberg, Anne Helene S. Sweetman, Andrew K. 2020-12-05 https://hdl.handle.net/10037/20121 https://doi.org/10.1007/s00300-020-02773-5 eng eng Springer Polar Biology info:eu-repo/grantAgreement/RCN/MARINFORSK/244572/Norway/Combined effects of multiple organic stressors from jellyfish blooms and aquaculture operations on seafloor ecosystems// Dunlop, Renaud, Berge, Jones, Harbour, Tandberg, Sweetman. Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords. Polar Biology. 2020:1-13 FRIDAID 1861460 doi:10.1007/s00300-020-02773-5 0722-4060 1432-2056 https://hdl.handle.net/10037/20121 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1007/s00300-020-02773-5 2021-06-25T17:57:53Z In high latitude coastal regions, benthic scavenger communities are largely composed of invertebrates that play a key role in the cycling of organic matter. Factors including temperature and depth can structure Arctic and Subarctic fjord benthic communities, but the response of scavenging communities to these factors is poorly known. To address this, we compared scavenging fauna in eight fjords with different physical characteristics in Svalbard and northern Norway using time-lapse imagery of scavengers consuming Atlantic herring ( Clupea harengus ) bait. Fjords influenced by relatively warm Atlantic waters, both in Norway and Svalbard, had high scavenger richness. However, Svalbard fjords with negative bottom temperatures had the lowest species richness and were dominated by lysianassoid amphipods and ophiuroids. In these cold Svalbard fjords, the mean carrion removal rates were almost 20 times higher than mean values noted elsewhere, except in the warm Norwegian fjord Kaldfjorden. Amphipods and ophiuroids quickly reduced the bait to bones (207.6–304.7 g removed per hour (g h −1 ); mean 290.6 ± 7.3 g h −1 , n = 4) in cold Svalbard fjords. In the warmer Svalbard fjords, carrion removal rates were low (0–51.5 g h −1 mean 14.6 ± 9.0 g h −1 , n = 5). Carrion removal rates in Kaldfjorden were higher than other Atlantic Water influenced fjords (132.1 and 372.5 g h −1 , n = 2) owing to the scavenging activity of Atlantic cod ( Gadus morhua ). The results demonstrate potential ecosystem responses to warming in Arctic and Subarctic fjords, particularly effects related to range expansion of boreal species. Article in Journal/Newspaper Arctic Arctic atlantic cod Gadus morhua Northern Norway Polar Biology Subarctic Svalbard University of Tromsø: Munin Open Research Archive Arctic Norway Svalbard Polar Biology 44 1 31 43 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Dunlop, Katherine Mary Renaud, Paul Eric Berge, Jørgen Jones, Daniel O.B. Harbour, Rob P. Tandberg, Anne Helene S. Sweetman, Andrew K. Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
In high latitude coastal regions, benthic scavenger communities are largely composed of invertebrates that play a key role in the cycling of organic matter. Factors including temperature and depth can structure Arctic and Subarctic fjord benthic communities, but the response of scavenging communities to these factors is poorly known. To address this, we compared scavenging fauna in eight fjords with different physical characteristics in Svalbard and northern Norway using time-lapse imagery of scavengers consuming Atlantic herring ( Clupea harengus ) bait. Fjords influenced by relatively warm Atlantic waters, both in Norway and Svalbard, had high scavenger richness. However, Svalbard fjords with negative bottom temperatures had the lowest species richness and were dominated by lysianassoid amphipods and ophiuroids. In these cold Svalbard fjords, the mean carrion removal rates were almost 20 times higher than mean values noted elsewhere, except in the warm Norwegian fjord Kaldfjorden. Amphipods and ophiuroids quickly reduced the bait to bones (207.6–304.7 g removed per hour (g h −1 ); mean 290.6 ± 7.3 g h −1 , n = 4) in cold Svalbard fjords. In the warmer Svalbard fjords, carrion removal rates were low (0–51.5 g h −1 mean 14.6 ± 9.0 g h −1 , n = 5). Carrion removal rates in Kaldfjorden were higher than other Atlantic Water influenced fjords (132.1 and 372.5 g h −1 , n = 2) owing to the scavenging activity of Atlantic cod ( Gadus morhua ). The results demonstrate potential ecosystem responses to warming in Arctic and Subarctic fjords, particularly effects related to range expansion of boreal species. |
format |
Article in Journal/Newspaper |
author |
Dunlop, Katherine Mary Renaud, Paul Eric Berge, Jørgen Jones, Daniel O.B. Harbour, Rob P. Tandberg, Anne Helene S. Sweetman, Andrew K. |
author_facet |
Dunlop, Katherine Mary Renaud, Paul Eric Berge, Jørgen Jones, Daniel O.B. Harbour, Rob P. Tandberg, Anne Helene S. Sweetman, Andrew K. |
author_sort |
Dunlop, Katherine Mary |
title |
Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords |
title_short |
Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords |
title_full |
Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords |
title_fullStr |
Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords |
title_full_unstemmed |
Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords |
title_sort |
benthic scavenger community composition and carrion removal in arctic and subarctic fjords |
publisher |
Springer |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/20121 https://doi.org/10.1007/s00300-020-02773-5 |
geographic |
Arctic Norway Svalbard |
geographic_facet |
Arctic Norway Svalbard |
genre |
Arctic Arctic atlantic cod Gadus morhua Northern Norway Polar Biology Subarctic Svalbard |
genre_facet |
Arctic Arctic atlantic cod Gadus morhua Northern Norway Polar Biology Subarctic Svalbard |
op_relation |
Polar Biology info:eu-repo/grantAgreement/RCN/MARINFORSK/244572/Norway/Combined effects of multiple organic stressors from jellyfish blooms and aquaculture operations on seafloor ecosystems// Dunlop, Renaud, Berge, Jones, Harbour, Tandberg, Sweetman. Benthic scavenger community composition and carrion removal in Arctic and Subarctic fjords. Polar Biology. 2020:1-13 FRIDAID 1861460 doi:10.1007/s00300-020-02773-5 0722-4060 1432-2056 https://hdl.handle.net/10037/20121 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1007/s00300-020-02773-5 |
container_title |
Polar Biology |
container_volume |
44 |
container_issue |
1 |
container_start_page |
31 |
op_container_end_page |
43 |
_version_ |
1766300521473245184 |