Patterns and drivers of megabenthic secondary production on the Barents Sea shelf
Megabenthos plays a major role in the overall energy flow on Arctic shelves, but information on megabenthic secondary production on large spatial scales is scarce. Here, we estimated for the first time megabenthic secondary production for the entire Barents Sea shelf by applying a species-based empi...
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ftawi:oai:epic.awi.de:40365 2024-09-15T17:57:44+00:00 Patterns and drivers of megabenthic secondary production on the Barents Sea shelf Degen, Renate Jørgensen, LL Ljubin, P Ellingsen, IH Pehlke, Hendrik Brey, Thomas 2016 application/pdf https://epic.awi.de/id/eprint/40365/ https://epic.awi.de/id/eprint/40365/1/Degen16_MEPS546.pdf https://doi.org/10.3354/meps11662 https://hdl.handle.net/10013/epic.47429 https://hdl.handle.net/10013/epic.47429.d001 unknown https://epic.awi.de/id/eprint/40365/1/Degen16_MEPS546.pdf https://hdl.handle.net/10013/epic.47429.d001 Degen, R. , Jørgensen, L. , Ljubin, P. , Ellingsen, I. , Pehlke, H. orcid:0000-0003-1916-7831 and Brey, T. orcid:0000-0002-6345-2851 (2016) Patterns and drivers of megabenthic secondary production on the Barents Sea shelf , Marine Ecology Progress Series, 546 , pp. 1-16 . doi:10.3354/meps11662 <https://doi.org/10.3354/meps11662> , hdl:10013/epic.47429 EPIC3Marine Ecology Progress Series, 546, pp. 1-16, ISSN: 0171-8630 Article isiRev 2016 ftawi https://doi.org/10.3354/meps11662 2024-06-24T04:14:20Z Megabenthos plays a major role in the overall energy flow on Arctic shelves, but information on megabenthic secondary production on large spatial scales is scarce. Here, we estimated for the first time megabenthic secondary production for the entire Barents Sea shelf by applying a species-based empirical model to an extensive dataset from the joint Norwegian− Russian ecosystem survey. Spatial patterns and relationships were analyzed within a GIS. The environmental drivers behind the observed production pattern were identified by applying an ordinary least squares regression model. Geographically weighted regression (GWR) was used to examine the varying relationship of secondary production and the environment on a shelfwide scale. Significantly higher megabenthic secondary production was found in the northeastern, seasonally ice-covered regions of the Barents Sea than in the permanently ice-free southwest. The environmental parameters that significantly relate to the observed pattern are bottom temperature and salinity, sea ice cover, new primary production, trawling pressure, and bottom current speed. The GWR proved to be a versatile tool for analyzing the regionally varying relationships of benthic secondary production and its environmental drivers (R2 = 0.73). The observed pattern indicates tight pelagic− benthic coupling in the realm of the productive marginal ice zone. Ongoing decrease of winter sea ice extent and the associated poleward movement of the seasonal ice edge point towards a distinct decline of benthic secondary production in the northeastern Barents Sea in the future. Article in Journal/Newspaper Barents Sea Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Marine Ecology Progress Series 546 1 16 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Megabenthos plays a major role in the overall energy flow on Arctic shelves, but information on megabenthic secondary production on large spatial scales is scarce. Here, we estimated for the first time megabenthic secondary production for the entire Barents Sea shelf by applying a species-based empirical model to an extensive dataset from the joint Norwegian− Russian ecosystem survey. Spatial patterns and relationships were analyzed within a GIS. The environmental drivers behind the observed production pattern were identified by applying an ordinary least squares regression model. Geographically weighted regression (GWR) was used to examine the varying relationship of secondary production and the environment on a shelfwide scale. Significantly higher megabenthic secondary production was found in the northeastern, seasonally ice-covered regions of the Barents Sea than in the permanently ice-free southwest. The environmental parameters that significantly relate to the observed pattern are bottom temperature and salinity, sea ice cover, new primary production, trawling pressure, and bottom current speed. The GWR proved to be a versatile tool for analyzing the regionally varying relationships of benthic secondary production and its environmental drivers (R2 = 0.73). The observed pattern indicates tight pelagic− benthic coupling in the realm of the productive marginal ice zone. Ongoing decrease of winter sea ice extent and the associated poleward movement of the seasonal ice edge point towards a distinct decline of benthic secondary production in the northeastern Barents Sea in the future. |
format |
Article in Journal/Newspaper |
author |
Degen, Renate Jørgensen, LL Ljubin, P Ellingsen, IH Pehlke, Hendrik Brey, Thomas |
spellingShingle |
Degen, Renate Jørgensen, LL Ljubin, P Ellingsen, IH Pehlke, Hendrik Brey, Thomas Patterns and drivers of megabenthic secondary production on the Barents Sea shelf |
author_facet |
Degen, Renate Jørgensen, LL Ljubin, P Ellingsen, IH Pehlke, Hendrik Brey, Thomas |
author_sort |
Degen, Renate |
title |
Patterns and drivers of megabenthic secondary production on the Barents Sea shelf |
title_short |
Patterns and drivers of megabenthic secondary production on the Barents Sea shelf |
title_full |
Patterns and drivers of megabenthic secondary production on the Barents Sea shelf |
title_fullStr |
Patterns and drivers of megabenthic secondary production on the Barents Sea shelf |
title_full_unstemmed |
Patterns and drivers of megabenthic secondary production on the Barents Sea shelf |
title_sort |
patterns and drivers of megabenthic secondary production on the barents sea shelf |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/40365/ https://epic.awi.de/id/eprint/40365/1/Degen16_MEPS546.pdf https://doi.org/10.3354/meps11662 https://hdl.handle.net/10013/epic.47429 https://hdl.handle.net/10013/epic.47429.d001 |
genre |
Barents Sea Sea ice |
genre_facet |
Barents Sea Sea ice |
op_source |
EPIC3Marine Ecology Progress Series, 546, pp. 1-16, ISSN: 0171-8630 |
op_relation |
https://epic.awi.de/id/eprint/40365/1/Degen16_MEPS546.pdf https://hdl.handle.net/10013/epic.47429.d001 Degen, R. , Jørgensen, L. , Ljubin, P. , Ellingsen, I. , Pehlke, H. orcid:0000-0003-1916-7831 and Brey, T. orcid:0000-0002-6345-2851 (2016) Patterns and drivers of megabenthic secondary production on the Barents Sea shelf , Marine Ecology Progress Series, 546 , pp. 1-16 . doi:10.3354/meps11662 <https://doi.org/10.3354/meps11662> , hdl:10013/epic.47429 |
op_doi |
https://doi.org/10.3354/meps11662 |
container_title |
Marine Ecology Progress Series |
container_volume |
546 |
container_start_page |
1 |
op_container_end_page |
16 |
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1810433884120154112 |