Results for the Greenland Halibut in the Spanish Spring Survey in the NAFO Regulatory Area of Divisions 3NO, 1996-2001: Abundance, Biomass and Population Structure

Since 1995, a stratified random spring bottom trawl survey in the NAFO Regulatory Area of Div. 3NO was conducted by Spain. The depth strata surveyed was extended to 1464 m. The main propose of the surveys was obtain abundance and biomass indices for the commercial species in the area. The entire ser...

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Bibliographic Details
Main Authors: González-Troncoso, D. (Diana), Román-Marcote, E. (Esther), Paz, X. (Xabier)
Format: Report
Language:English
Published: Centro Oceanográfico de Vigo 2002
Subjects:
Greenland
North Atlantic
Northwest Atlantic
Online Access:http://hdl.handle.net/10508/589
Description
Summary:Since 1995, a stratified random spring bottom trawl survey in the NAFO Regulatory Area of Div. 3NO was conducted by Spain. The depth strata surveyed was extended to 1464 m. The main propose of the surveys was obtain abundance and biomass indices for the commercial species in the area. The entire series of abundance and biomass for Greenland halibut are presented for the period 1996-2001. The indices calculated from the survey series shows an increasing in the Greenland halibut abundance and biomass until 1998, but in following years these values tend to decrease. However, recruitment is good in the last years, although the number of individuals of length over 70 cm is very low.

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