The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components
This study examines the performance of pelagic and benthic Malacostraca in two glacial fjords of west Spitsbergen: Kongsfjorden, strongly influenced by warm Atlantic waters, and Hornsund which, because of the strong impact of the cold Sørkapp Current, has more of an Arctic character. The material wa...
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2017
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Online Access: | https://doi.org/10.1016/j.oceano.2017.01.004 https://doaj.org/article/ddafe16f65414c02944e976aceb050b9 |
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ftdoajarticles:oai:doaj.org/article:ddafe16f65414c02944e976aceb050b9 2023-05-15T14:48:17+02:00 The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components Joanna Legeżyńska Maria Włodarska-Kowalczuk Marta Gluchowska Mateusz Ormańczyk Monika Kędra Jan Marcin Węsławski 2017-10-01T00:00:00Z https://doi.org/10.1016/j.oceano.2017.01.004 https://doaj.org/article/ddafe16f65414c02944e976aceb050b9 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S0078323417300180 https://doaj.org/toc/0078-3234 0078-3234 doi:10.1016/j.oceano.2017.01.004 https://doaj.org/article/ddafe16f65414c02944e976aceb050b9 Oceanologia, Vol 59, Iss 4, Pp 541-564 (2017) Malacostraca Arctic Svalbard Diversity Distribution Oceanography GC1-1581 article 2017 ftdoajarticles https://doi.org/10.1016/j.oceano.2017.01.004 2022-12-30T22:57:54Z This study examines the performance of pelagic and benthic Malacostraca in two glacial fjords of west Spitsbergen: Kongsfjorden, strongly influenced by warm Atlantic waters, and Hornsund which, because of the strong impact of the cold Sørkapp Current, has more of an Arctic character. The material was collected during 12 summer expeditions organized from 1997 to 2013. In all, 24 pelagic and 116 benthic taxa were recorded, most of them widely distributed Arctic-boreal species. The advection of different water masses from the shelf had a direct impact on the structure of the pelagic Malacostraca communities, resulting in the clear dominance of the sub-arctic hyperiid amphipod Themisto abyssorum in Kongsfjorden and the great abundance of Decapoda larvae in Hornsund. The taxonomic, functional and size compositions of the benthic malacostracan assemblages varied between the two fjords, and also between the glacier-proximate inner bays and the main fjord basins, as a result of the varying dominance patterns of the same assemblage of species. There was a significant drop in species richness in the strongly disturbed glacial bays of both fjords, but only in Hornsund was this accompanied by a significant decrease in density and diversity, probably due to greater isolation and poorer quality of sediment organic matter in its innermost basin. Our results suggest that the diversity and distribution of benthic malacostracans in these two fjords are only distantly related to the different hydrological regimes; rather, they are governed by locally acting factors, such as depth, sediment type, the variety of microhabitats and the availability and quality of food. Article in Journal/Newspaper Arctic glacier Hornsund Kongsfjord* Kongsfjorden Svalbard Themisto abyssorum Themisto Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Svalbard Oceanologia 59 4 541 564 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Malacostraca Arctic Svalbard Diversity Distribution Oceanography GC1-1581 |
spellingShingle |
Malacostraca Arctic Svalbard Diversity Distribution Oceanography GC1-1581 Joanna Legeżyńska Maria Włodarska-Kowalczuk Marta Gluchowska Mateusz Ormańczyk Monika Kędra Jan Marcin Węsławski The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components |
topic_facet |
Malacostraca Arctic Svalbard Diversity Distribution Oceanography GC1-1581 |
description |
This study examines the performance of pelagic and benthic Malacostraca in two glacial fjords of west Spitsbergen: Kongsfjorden, strongly influenced by warm Atlantic waters, and Hornsund which, because of the strong impact of the cold Sørkapp Current, has more of an Arctic character. The material was collected during 12 summer expeditions organized from 1997 to 2013. In all, 24 pelagic and 116 benthic taxa were recorded, most of them widely distributed Arctic-boreal species. The advection of different water masses from the shelf had a direct impact on the structure of the pelagic Malacostraca communities, resulting in the clear dominance of the sub-arctic hyperiid amphipod Themisto abyssorum in Kongsfjorden and the great abundance of Decapoda larvae in Hornsund. The taxonomic, functional and size compositions of the benthic malacostracan assemblages varied between the two fjords, and also between the glacier-proximate inner bays and the main fjord basins, as a result of the varying dominance patterns of the same assemblage of species. There was a significant drop in species richness in the strongly disturbed glacial bays of both fjords, but only in Hornsund was this accompanied by a significant decrease in density and diversity, probably due to greater isolation and poorer quality of sediment organic matter in its innermost basin. Our results suggest that the diversity and distribution of benthic malacostracans in these two fjords are only distantly related to the different hydrological regimes; rather, they are governed by locally acting factors, such as depth, sediment type, the variety of microhabitats and the availability and quality of food. |
format |
Article in Journal/Newspaper |
author |
Joanna Legeżyńska Maria Włodarska-Kowalczuk Marta Gluchowska Mateusz Ormańczyk Monika Kędra Jan Marcin Węsławski |
author_facet |
Joanna Legeżyńska Maria Włodarska-Kowalczuk Marta Gluchowska Mateusz Ormańczyk Monika Kędra Jan Marcin Węsławski |
author_sort |
Joanna Legeżyńska |
title |
The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components |
title_short |
The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components |
title_full |
The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components |
title_fullStr |
The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components |
title_full_unstemmed |
The malacostracan fauna of two Arctic fjords (west Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components |
title_sort |
malacostracan fauna of two arctic fjords (west spitsbergen): the diversity and distribution patterns of its pelagic and benthic components |
publisher |
Elsevier |
publishDate |
2017 |
url |
https://doi.org/10.1016/j.oceano.2017.01.004 https://doaj.org/article/ddafe16f65414c02944e976aceb050b9 |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) |
geographic |
Arctic Hornsund Svalbard |
geographic_facet |
Arctic Hornsund Svalbard |
genre |
Arctic glacier Hornsund Kongsfjord* Kongsfjorden Svalbard Themisto abyssorum Themisto Spitsbergen |
genre_facet |
Arctic glacier Hornsund Kongsfjord* Kongsfjorden Svalbard Themisto abyssorum Themisto Spitsbergen |
op_source |
Oceanologia, Vol 59, Iss 4, Pp 541-564 (2017) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0078323417300180 https://doaj.org/toc/0078-3234 0078-3234 doi:10.1016/j.oceano.2017.01.004 https://doaj.org/article/ddafe16f65414c02944e976aceb050b9 |
op_doi |
https://doi.org/10.1016/j.oceano.2017.01.004 |
container_title |
Oceanologia |
container_volume |
59 |
container_issue |
4 |
container_start_page |
541 |
op_container_end_page |
564 |
_version_ |
1766319378123456512 |