Results for redfish from the Spanish Surveys conducted in the NAFO Regulatory Area of Divisions 3NO, 1995-2009

Since 1995, a stratified random spring bottom trawl survey in the NAFO Regulatory Area of Div. 3NO was conducted by Spain. In 2001, the trawl vessel was replaced; so, the time series indices were transformed. The transformed entire series of mean catches, biomass and length distribution for redfish...

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Bibliographic Details
Main Authors: González-Troncoso, Diana, Paz, Xabier, González-Iglesias, María de la Concepción
Format: Report
Language:English
Published: 2010
Subjects:
Pesquerías
Centro Oceanográfico de Vigo
North Atlantic
Northeast Atlantic
Sebastes marinus
Sebastes mentella
Online Access:http://hdl.handle.net/10508/625
http://hdl.handle.net/10261/328317
Description
Summary:Since 1995, a stratified random spring bottom trawl survey in the NAFO Regulatory Area of Div. 3NO was conducted by Spain. In 2001, the trawl vessel was replaced; so, the time series indices were transformed. The transformed entire series of mean catches, biomass and length distribution for redfish (Sebastes marinus, Sebastes mentella and Sebastes fasciatus collectively reported) are presented for the period 1995-2000, and the no-transformed data for the years 2002-2009. In 2001 there are data from the two vessels. The summed biomass based on conversion of the length frequencies are presented and compared to the estimates from the method used to convert the CPUE. The indices of this species were variable over the time, with a sharp increase in year 2009. There are no recent good recent recruitments.

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