Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2
The main aim of the ecosystem survey was to map the distribution and abundance of the young and adult stages of several demersal and pelagic fish species, and in addition to this gather information about hydrographical features, zooplankton, benthos, seabirds and sea mammals. Depleted content of oxy...
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ftimr:oai:imr.brage.unit.no:11250/112219 2024-09-15T17:57:46+00:00 Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2 IMR PINRO 2005 11535768 bytes application/pdf http://hdl.handle.net/11250/112219 eng eng IMR/PINRO IMR/PINRO joint report series 1 - 2005 urn:issn:1502-8828 http://hdl.handle.net/11250/112219 86 s. 0-gruppe 0-group cruise report toktrapport "Johan Hjort" "Jan Mayen" økosystemtokt Barentshavet VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 Research report 2005 ftimr 2024-07-31T03:37:25Z The main aim of the ecosystem survey was to map the distribution and abundance of the young and adult stages of several demersal and pelagic fish species, and in addition to this gather information about hydrographical features, zooplankton, benthos, seabirds and sea mammals. Depleted content of oxygen in the bottom layer of the southern Barents Sea that started in 1998 has continued in summer and autumn 2004. Phosphate content in the Barents Sea in summer was close to the long-term mean and reduced in autumn because of late termination of water blooming. Total abundance indices of 0-group fish were estimated by new Norwegian-Russian method used two ways. The new indices show the same richness of year classes as was found by traditional indices. Total cod numbers was estimated to be 1544 million individuals. Numbers of haddock was estimated near 791 million individuals. Assessments of other species biomass were estimated correspondingly: Redfish Sebastes marinus - 12 thousand sp., Sebastes mentella - 317 thousand sp., long rough dab - 3096 million individuals, Greenland halibut - 139 thousand sp. In addition, three species of catfish were also estimated. Report Barents Sea Barentshav* Greenland Jan Mayen Sebastes mentella Institute for Marine Research: Brage IMR |
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Institute for Marine Research: Brage IMR |
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English |
topic |
0-gruppe 0-group cruise report toktrapport "Johan Hjort" "Jan Mayen" økosystemtokt Barentshavet VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 |
spellingShingle |
0-gruppe 0-group cruise report toktrapport "Johan Hjort" "Jan Mayen" økosystemtokt Barentshavet VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 IMR PINRO Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2 |
topic_facet |
0-gruppe 0-group cruise report toktrapport "Johan Hjort" "Jan Mayen" økosystemtokt Barentshavet VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 |
description |
The main aim of the ecosystem survey was to map the distribution and abundance of the young and adult stages of several demersal and pelagic fish species, and in addition to this gather information about hydrographical features, zooplankton, benthos, seabirds and sea mammals. Depleted content of oxygen in the bottom layer of the southern Barents Sea that started in 1998 has continued in summer and autumn 2004. Phosphate content in the Barents Sea in summer was close to the long-term mean and reduced in autumn because of late termination of water blooming. Total abundance indices of 0-group fish were estimated by new Norwegian-Russian method used two ways. The new indices show the same richness of year classes as was found by traditional indices. Total cod numbers was estimated to be 1544 million individuals. Numbers of haddock was estimated near 791 million individuals. Assessments of other species biomass were estimated correspondingly: Redfish Sebastes marinus - 12 thousand sp., Sebastes mentella - 317 thousand sp., long rough dab - 3096 million individuals, Greenland halibut - 139 thousand sp. In addition, three species of catfish were also estimated. |
format |
Report |
author |
IMR PINRO |
author_facet |
IMR PINRO |
author_sort |
IMR |
title |
Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2 |
title_short |
Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2 |
title_full |
Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2 |
title_fullStr |
Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2 |
title_full_unstemmed |
Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2 |
title_sort |
extended survey report from the joint norwegian/russian ecosystem survey in the barents sea august-october 2004, volume 2 |
publisher |
IMR/PINRO |
publishDate |
2005 |
url |
http://hdl.handle.net/11250/112219 |
genre |
Barents Sea Barentshav* Greenland Jan Mayen Sebastes mentella |
genre_facet |
Barents Sea Barentshav* Greenland Jan Mayen Sebastes mentella |
op_source |
86 s. |
op_relation |
IMR/PINRO joint report series 1 - 2005 urn:issn:1502-8828 http://hdl.handle.net/11250/112219 |
_version_ |
1810433926458507264 |