Research Document - 2007/008
Results from the August 2006 Sentinel mobile survey of the southern Gulf of St. Lawrence
By Poirier, G.A. and L. Currie
Abstract
In 2003 the mobile gear component of the industry-based Sentinel survey in the southern Gulf of St. Lawrence (NAFO Area 4T) was conducted, for the first time, as a stratified random survey. Four otter trawl vessels participated in the survey during August. In 2004 and again in 2006, one of the original vessels was replaced. Differences were found in the efficiency of the vessels for catching cod, white hake, American plaice, winter flounder, and herring. Differences were found in some comparisons of catchability by size of fish, but these differences have not been consistent, either over time, or among vessels. Precision of vessel comparisons should increase with the integration of these results with results of future surveys. The abundance indices for cod, American plaice, winter flounder and yellowtail flounder decreased significantly from 2003 to 2006.
Accessibility Notice
This document is available in PDF format. If the document is not accessible to you, please contact the Secretariat to obtain another appropriate format, such as regular print, large print, Braille or audio version.
- Date modified: