Details:

Personal Author:
Rutecki, T. L. (Thomas L.) ; Rodgveller, Cara J. ; Lunsford, Chris R.
Rutecki, T. L. (Thomas L.) ; Rodgveller, Cara J. ; Lunsford, Chris R. Less -
Corporate Authors:
Alaska Fisheries Science Center (U.S.)
NOAA Program & Office:
NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center)
NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center) Less -
Description:
This report discusses the history and methods of the National Marine Fisheries Service's (NMFS) longline surveys of the Gulf of Alaska, eastern Bering Sea, and eastern Aleutian Islands and summarizes the 1990-2014 survey results. The primary purpose of the NMFS longline survey is to determine the relative abundance and length composition of sablefish, Anoplopoma fimbria; shortspine thornyhead, Sebastolobus alascanus; rougheye rockfish, Sebastes aleutianus; blackspotted rockfish, Sebastes melanostictus; and shortraker rockfish, Sebastes borealis, in the Gulf of Alaska, eastern Bering Sea, and Aleutian Islands region. Only the abovementioned species and arrowtooth flounder, Atheresthes stomias, are discussed in this report. Catch results are listed for Pacific cod, Gadus macrocephalus; Pacific halibut, Hippoglossus stenolepis; giant grenadier, Albatrossia pectoralis; Greenland turbot, Reinhardtius hippoglossoides; spiny dogfish, Squalus acanthias; and Pacific sleeper shark, Somniosus pacificus. The survey area covers the upper continental slope and selected gullies of the Gulf of Alaska and the upper continental slope of the eastern Bering Sea and Aleutian Islands region. Overall sablefish abundance indices (relative population number (RPN) and relative population weight (RPW)) for the Gulf of Alaska decreased from 1990 to 2014. Shorrtspine thornyhead RPN for the Gulf of Alaska increased from 1990 to 2014 and RPW increased from 1990 to 2014. Rougheye and blackspotted rockfish RPN for the Gulf of Alaska increased from 1992 to 2014 and RPW increased from 1992 to 2014. Gulf of Alaska RPN for shortraker rockfish increased from 1992 to 2011 followed by a decrease during 2012-2014. While shortraker rockfish RPWs fluctuated over the years there was an overall increase in RPWs from 1992 to 2014. Arrowtooth flounder RPN for the Gulf of Alaska fluctuated between increases and decreases from 1990 to 2010 but decreased during 2011-2014. Arrowtooth flounder RPW decreased overall from 1990 to 2014. [doi:10.7289/V5/TM-AFSC-324 (http://dx.doi.org/10.7289/V5/TM-AFSC-324)]
Content Notes:
T.L. Rutecki, C.J. Rodgveller, and C.R. Lunsford.

"August 2016."

Chiefly tables.

System requirements: Adobe Acrobat Reader.

Includes bibliographical references (pages 19-20).

Rutecki, T. L., C. J. Rodgveller, and C. R. Lunsford. 2016. National Marine Fisheries Service longline survey data report and survey history, 1990-2014. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC 324, 329 p.


Keywords:
[+]
Fish Populations
Fish Stock Assessment
Fish Surveys
Longlining (Fisheries)
Management

Series:
NOAA technical memorandum NMFS-AFSC ; 324
DOI:
http://doi.org/10.7289/V5/TM-AFSC-324
Document Type:
Technical Memorandum
Place as Subject:
Alaska ; Pacific Coast ; Bering Sea Coast
Alaska ; Pacific Coast ; Bering Sea Coast Less -
Rights Information:
Public Domain
Compliance:
Library
Main Document Checksum:
[+]
urn:sha256:170aff0c65e92bd78359fcbe246be04da3f185b0d0e999e5613e8990054f16cd
File Type:

Supporting Files

• No Additional Files

More +