Fish Trawl Assessment
The primary object of the fish trawl assessment program is to estimate the relative abundance (numbers) and biomass (weight), species composition, and biological information on benthic and pelagic marine fish and invertebrate communities within the study areas. Bottom and pelagic trawl nets are deployed at each station and towed for approximately 5 to 15 minutes at an approximate speed of 2 to 4 knots. On average a 15 minute trawl tow covers a distance of approximately 926 meters (3,050 ft.). State-of-the-art instrumentation records all trawl performance data during each tow, allowing an accurate estimate of area surveyed. Biologists sort the catch, weigh and count animals by species, and collect samples for studies of diet and ecosystem relationships. Common fish species seen in the trawl surveys in the Chukchi Sea are mostly small and include Arctic cod, Pacific sandlance, capelin and several species of sculpins. Common invertebrate species are numerous and include snow crab, a variety of sea stars, brittle stars and molluscs.
Fisheries 2012
Additional 2012 fishery information will be available, please check back later.
Jeff June
Principal Investigator
Natural Resources Consultants Inc
4039 21st Avenue West, Suite 404
Seattle, WA 98199
206-285-3480
jjune@nrccorp.com
Fisheries 2011
Additional 2011 fishery information will be available, please check back later.
Jeff June
Principal Investigator
Natural Resources Consultants Inc
4039 21st Avenue West, Suite 404
Seattle, WA 98199
206-285-3480
jjune@nrccorp.com
Fisheries 2010
Additional 2010 fishery information will be available, please check back later.
Brenda Norcross
Principal Investigator
UAF – Institute of Marine Science
116 O’Neill PO Box 757220
Fairbanks, AK 99775
907-474-7990
bnorcross@alaska.edu
Brenda Holladay
Principal Investigator
UAF – Institute of Marine Science
209C O’Neill PO Box 757220
Fairbanks, AK 99775
907-474-5428
baholladay@alaska.edu
Bob Meyer
Principal Investigator, LGL
Fisheries 2009
Additional 2009 fishery information will be available, please check back later.
Brenda Norcross
Principal Investigator
UAF – Institute of Marine Science
116 O’Neill PO Box 757220
Fairbanks, AK 99775
907-474-7990
bnorcross@alaska.edu
Brenda Holladay
Principal Investigator
UAF – Institute of Marine Science
209C O’Neill PO Box 757220
Fairbanks, AK 99775
907-474-5428
baholladay@alaska.edu