Transformed results for Greenland Halibut from the Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1996-2002

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 1464m. The main propose of the surveys was obtain abundance and biomass indices and population structure for the commercial species in...

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Bibliographic Details
Main Authors: González-Troncoso, Diana, Román-Marcote, Esther, Paz, Xabier
Format: Report
Language:English
Published: 2003
Subjects:
Pesquerías
Centro Oceanográfico de Vigo
Greenland
North Atlantic
Northwest Atlantic
Online Access:http://hdl.handle.net/10508/592
http://hdl.handle.net/10261/328639
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 1464m. The main propose of the surveys was obtain abundance and biomass indices and population structure for the commercial species in the area. In 2001, the trawl vessel was replaced in the realization of the trawls; so, the time series indices was transformed. The transformed entire series of abundance, biomass and lenght distribution for Greenland halibut are presented for the period 1996-2000, and the no-transformed data for the years 2001 and 2002. The standard deviation are shown for abundance and biomass. A decreasing in Greenland halibut biomass is observed in last years. A high percent of juvenile individuals shows a good recruitment in recent years.

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