Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea
An 0-group fish survey is conducted annually in the Barents Sea in order to estimate fish population abundance. Data on jellyfish by-catch have been recorded since 1980, although this dataset has never been analysed. In recent years, however, the ecological importance of jellyfish medusae has become...
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Online Access: | http://hdl.handle.net/11250/109240 https://doi.org/10.1371/journal.pone.0033050 |
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ftimr:oai:imr.brage.unit.no:11250/109240 2023-05-15T15:38:29+02:00 Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea Eriksen, Elena Prozorkevich, Dmitry Trofimov, Aleksandr Howell, Daniel 2012-03-22 application/pdf http://hdl.handle.net/11250/109240 https://doi.org/10.1371/journal.pone.0033050 eng eng PLoS ONE urn:issn:1932-6203 http://hdl.handle.net/11250/109240 http://dx.doi.org/10.1371/journal.pone.0033050 e33050 7 PLoS ONE 3 jellyfish maneter biomass biomasse stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 Journal article Peer reviewed 2012 ftimr https://doi.org/10.1371/journal.pone.0033050 2021-09-23T20:14:20Z An 0-group fish survey is conducted annually in the Barents Sea in order to estimate fish population abundance. Data on jellyfish by-catch have been recorded since 1980, although this dataset has never been analysed. In recent years, however, the ecological importance of jellyfish medusae has become widely recognized. In this paper the biomass of jellyfish (medusae) in 0–60 m depths is calculated for the period 1980–2010. During this period the climate changed from cold to warm, and changes in zooplankton and fish distribution and abundance were observed. This paper discusses the less well known ecosystem component; jellyfish medusae within the Phylum Cnidaria, and their spatial and temporal variation. The long term average was ca. 9x10^8 kg, with some years showing biomasses in excess of 5x10^9 kg. The biomasses were low during 1980s, increased during 1990s, and were highest in early 2000s with a subsequent decline. The bulk of the jellyfish were observed in the central parts of the Barents Sea, which is a core area for most 0-group fishes. Jellyfish were associated with haddock in the western area, with haddock and herring in the central and coastal area, and with capelin in the northern area of the Barents Sea. The jellyfish were present in the temperature interval 1°C Article in Journal/Newspaper Barents Sea Institute for Marine Research: Brage IMR Barents Sea PLoS ONE 7 3 e33050 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
jellyfish maneter biomass biomasse stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 |
spellingShingle |
jellyfish maneter biomass biomasse stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 Eriksen, Elena Prozorkevich, Dmitry Trofimov, Aleksandr Howell, Daniel Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea |
topic_facet |
jellyfish maneter biomass biomasse stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Social science: 200::Library and information science: 320::Knowledge retrieval and organization: 323 |
description |
An 0-group fish survey is conducted annually in the Barents Sea in order to estimate fish population abundance. Data on jellyfish by-catch have been recorded since 1980, although this dataset has never been analysed. In recent years, however, the ecological importance of jellyfish medusae has become widely recognized. In this paper the biomass of jellyfish (medusae) in 0–60 m depths is calculated for the period 1980–2010. During this period the climate changed from cold to warm, and changes in zooplankton and fish distribution and abundance were observed. This paper discusses the less well known ecosystem component; jellyfish medusae within the Phylum Cnidaria, and their spatial and temporal variation. The long term average was ca. 9x10^8 kg, with some years showing biomasses in excess of 5x10^9 kg. The biomasses were low during 1980s, increased during 1990s, and were highest in early 2000s with a subsequent decline. The bulk of the jellyfish were observed in the central parts of the Barents Sea, which is a core area for most 0-group fishes. Jellyfish were associated with haddock in the western area, with haddock and herring in the central and coastal area, and with capelin in the northern area of the Barents Sea. The jellyfish were present in the temperature interval 1°C |
format |
Article in Journal/Newspaper |
author |
Eriksen, Elena Prozorkevich, Dmitry Trofimov, Aleksandr Howell, Daniel |
author_facet |
Eriksen, Elena Prozorkevich, Dmitry Trofimov, Aleksandr Howell, Daniel |
author_sort |
Eriksen, Elena |
title |
Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea |
title_short |
Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea |
title_full |
Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea |
title_fullStr |
Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea |
title_full_unstemmed |
Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea |
title_sort |
biomass of scyphozoan jellyfish, and its spatial association with 0-group fish in the barents sea |
publisher |
PLoS ONE |
publishDate |
2012 |
url |
http://hdl.handle.net/11250/109240 https://doi.org/10.1371/journal.pone.0033050 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
e33050 7 PLoS ONE 3 |
op_relation |
urn:issn:1932-6203 http://hdl.handle.net/11250/109240 http://dx.doi.org/10.1371/journal.pone.0033050 |
op_doi |
https://doi.org/10.1371/journal.pone.0033050 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
3 |
container_start_page |
e33050 |
_version_ |
1766369436762112000 |