Barents Sea - Data Sources
Total biomass
ICES working group reports for Areas I and II:
- Capelin (WGAFWG), estimated biomass (Ktonnes). Acoustic sampling, Survey: The Joint Russian-Norwegian Ecosystem Survey (Aug-Sep)
- NEA saithe (WGNSSK), estimated biomass (Ktonnes). Survey: acoustic survey (Oct-Nov)
- Northern shrimp (WGNIPAG), biomass index. Survey: International Bottom Trawl Survey, 1 quarter (Feb-Mar)
- Redfish sp,(AFWG) biomass index. Survey: The Joint Russian-Norwegian Ecosystem Survey (Aug-Sep)
IMR- Sjømil data base (Same data as presented by the ICES WGs):
- Polar cod, estimated biomass (Ktonnes). Acoustic sampling, Survey: The Joint Russian-Norwegian Ecosystem Survey (Aug-Sep)
- NEA cod, estimated biomass (Ktonnes). Survey: Trawl-acoustic sampling (The Joint Norwegian-Russian Winter Survey)
- NEA haddock. calculated biomass (Ktonnes). Survey: Trawl-acoustic sampling (The Joint Norwegian-Russian Winter Survey)
- Greenland halibut, estimated abundance. Survey: The Joint Russian-Norwegian Ecosystem Survey (Aug-Sep)
IMR- Survey report from the Russian-Norwegian ecosystem survey (RNES)(Aug.-Sept):
- Atlantic herring juveniles (1-3 years), estimated biomass (Ktonnes). Trawl-Acoustic sampling, Survey: The Joint Russian-Norwegian Ecosystem Survey (Aug-Sep)
- Wolffish sp, estimated abundance. Survey: Trawl survey (Aug-Sep)
Models for assessment of biomass or abundance for
NEA cod : http://www.ices.dk/reports/ACOM/2012/AFWG/Annex%2003%20Stock%20Annex%20Northeast%20Arctic%20Cod.pdf
NEA haddock : http://www.ices.dk/reports/ACOM/2012/AFWG/Annex%2004%20Stock%20Annex%20NEA%20Haddock.pdf
NEA Saithe : http://www.ices.dk/reports/ACOM/2012/AFWG/Annex%2005%20Stock%20Annex%20NEA%20Saithe.pdf
Greenland halibut : http://www.ices.dk/reports/ACOM/2012/AFWG/Annex%2008%20Stock%20Annex%20NEA%20Greenland%20Halibut.pdf
Landings
ICES working group reports for Areas I and II:
- Capelin (WGAFWG)
- NEA saithe (WGNSSK)
- Shrimp (WGNIPAG)
- Redfish sp (AFWG)
- Greenland halibut (AFWG)
IMR Sjømil data base (Same data as presented by the ICES WGs):
- NEA cod
- NEA haddock
Discards
ICES working group report for Area I and II (incomplete data in the Indiseas 2-data set):
- NEA Cod (AFWG)
- Redfish sp (AFWG)
Mean length
IMR, Norwegian Marine Data Center:
- For 1973-2006 : capelin, juv herring, capelin, herring (0-3 y), NEA cod (3+y),, NEA haddock (3+y), beaked redfish, golden redfish
- For 2007-2010: capelin, juv. Herring (0-3 y), polar cod, NEA cod (3+y), NEA haddock (3+y), NEA saithe (3+y), blue whiting, beaked redfish, golden redfish and greenland halibut. Due to extremely few measurements,wolffish sp was not included.
based on length measurements during the Russian-Norwegian Ecosystem Survey (Aug-Sep)
Trophic levels (TL)
Fishbase.com (FAO):
- For all fish species except juv. herring
- TL for juvenile herring is suggested to 3, slightly above capelin. Herring at this life stage is to a large extent filling the same niche as capelin, but is at the same time predators on larval and 0-group capelins
-
Life span
Fishbase.com (FAO):
- For the fish species
Mean intrinsic vulnerability index
Fishbase.com (FAO):
- For the fish species