Download or read book Standardizing the Southern Gulf of St Lawrence Bottom trawl Survey Time Series Adjusting for Changes in Research Vessel Gear and Survey Protocol written by Canada. Department of Fisheries and Oceans and published by Moncton, N.B. : Fisheries and Oceans. This book was released on 2003 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Standardizing the Southern Gulf of St Lawrence Bottom Trawl Survey Time Series written by Hugues Pascal Benoît and published by . This book was released on 2006 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Results from the September 2009 Bottom trawl Survey of the Southern Gulf of St Lawrence written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Results from the 2011 Sentinel Bottom trawl Survey in the Southern Gulf of St Lawrence and Comparisons with Previous 2003 to 2010 Surveys written by Luc Savoie and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Results from the September 2012 and 2013 Bottom trawl Surveys of the Southern Gulf of St Lawrence and Comparisons with Previous 1971 to 2011 Surveys written by Luc Savoie and published by . This book was released on 2014 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Results from the 2012 and 2013 Sentinel Bottom trawl Surveys in the Southern Gulf of St Lawrence and Comparisons with Previous 2003 to 2011 Surveys written by Luc Savoie and published by . This book was released on 2014 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Calibration of Bottom Trawl Survey Vessels written by G. Mark Fowler and published by . This book was released on 2009 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adjustments to calibrate fish and invertebrate abundance estimates between two research survey vessels were determined using mixed-effects and fixed-effects modelling. The fixed-effects model assumes equal probability of a fish being available for capture between the two vessels for a given paired tow set, while the mixed-effects model assumes equal probability over the population of sets, including an estimate of within-set variability as random error. The mixed-effects approach appeared superior to the fixed-effects approach, being better able to resolve the high variability between sets characteristic of the stratified-random survey design in which the calibrartion experiment was conducted. Differences in catchability with length of animals was pervasive, the greatest differences in catchability between vessels being associated with the smallest animals. The influence of length on catchability was best portrayed as a curilinear relationship, as catchability tended to plateau for animals over about 26cm. For some species catchabilities between vessles differed according to the time of day and depth of a tow, though in most cases the differences were of fairly small magnitude.

Download or read book Preliminary Results from the September 2010 and 2011 Bottom trawl Survey of the Southern Gulf of St Lawrence written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary results from the September 2010 and 2011 bottom trawl survey of the southern Gulf of St Lawrence written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Results from the 2010 Sentinel Bottom trawl Survey in the Southern Gulf of St Lawrence and Comparisons with Previous 2003 to 2009 Surveys written by Luc Savoie and published by . This book was released on 2011 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Technical Report of Fisheries and Aquatic Sciences written by and published by . This book was released on 2009 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of the Utility of Summer Trawl Surveys 1990 to 1994 in the Shediac Valley NAFO Unit Area 4Tl as an Index of Pre recruit Abundance for Southern Gulf of St Lawrence Cod written by and published by . This book was released on 1995 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper evaluates the potential of a juvenile cod survey as an independent index of pre-recruiting year class strength of southern Gulf of St. Lawrence cod. The evaluation is based on five surveys conducted with a bottom trawl in the Shediac Valley area of the southern Gulf in the summers of 1990 to 1994. Numbers per tow at age for ages 1 to 9 were obtained for all five years of the survey. Two types of analyses were used to attempt to evaluate the utility of the surveys as an index of year class strength: correlation analysis and application of two multiplicative models, an age & year class model and an age, year class, stratum, and age-stratum interaction model.

Download or read book Abundance and distribution of fish and squid from E E Prince Trawl Surveys in the Southern Gulf of St Lawrence 1970 79 written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Results from the September 2005 Bottom trawl Survey of the Sourthern Gulf of St Lawrence written by T. Hurlbut and published by . This book was released on 2006 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2013 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the North Pacific Symposium on Invertebrate Stock Assessment and Management written by National Research Council Canada and published by NRC Research Press. This book was released on 1998 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a symposium that focused on new, innovative evaluation of the implications and needs for changing management approaches and demands in invertebrate fishery science. Species covered in the presentations include crustaceans, gastropods, echinoderms, and bivalves. Presentations are organized in the following subject areas: assessment of abundance and related parameters; growth, mortality, and yield per recruit; spatial pattern and its implications; the fishing process; population dynamics; the fishery as a selective force; invertebrate fisheries management; and regional perspectives from the north Pacific. The proceedings conclude with a symposium overview.

Download or read book Evaluation of the Utility of Summer Trawl Surveys 1990 to 1994 in the Shediac Valley NAFO Unit Area 4TI as an Index of Pre recruit Abundance for Southern Gulf of St Lawrence Cod written by Canada. Department of Fisheries and Oceans and published by Moncton, N.B. : Department of Fisheries and Oceans. This book was released on 1995 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: