Download or read book Estimation of Exploitation and Migration Rates of Atlantic Cod Gadus Morhua in NAFO Subdiv 3Psc and Divs 3KL During 1997 and 1998 Based on Tagging Experiments written by Noel G. Cadigan and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lower Bounds on the Exploitation of Cod Gadus Morhua in NAFO Divs 3KL and Subdiv 3Ps During 1997 99 from Tagging Experiments written by and published by . This book was released on 2000 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes & presents results from a model developed to estimate exploitation rates (fraction of stock removed by the fishery) using tags returned from the commercial fisheries for Atlantic cod in NAFO Divisions 3KL & Subdivision 3Ps & adjacent areas during 1997-99. The model involves length- and gear-based exploitation rates and incorporates methods to estimate tagging mortality, tag loss, tag reporting rates, and fish growth. This model is used to estimate weekly exploitation rates in 3KL & 3Ps, but the focus is on exploitation in 3KL during the two time periods in which most of the commercial catch in 1999 was taken. The model's estimates represent the fraction of the tagged population exploited by the fishery if there was no migration. Using the reported landings for the two periods, the biomass of fish in 3KL is also estimated.

Download or read book Exploitation Rates and Movements of Atlantic Cod Gadus Morhua in NAFO Divs 3KL Based on Tagging Experiments Conducted During 1997 2002 written by and published by . This book was released on 2003 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes & presents results of a mark-recapture study of Atlantic cod in Divisions 3KL (east coast Newfoundland) initiated in 1997 & continued in 2002. The purpose of the study was to provide information on movement patterns & stock structure of inshore cod as well as to obtain estimates of exploitation rates on cod tagged in different inshore regions. The method for estimating exploitation, similar to that described in Brattey et al. (2001, 2002), incorporates a new method of accounting for tag loss (Cadigan & Brattey, 2003). The report gives annual estimates of exploitation for each tagging experiment conducted over the period. It also summarizes the spatial & temporal distribution of recaptures of tagged cod released in various regions of 3KL and reported as recaptured up to the end of December 2002.

Download or read book Estimation of Cod Gadus Morhua Growth in NAFO Subdiv 3Ps and Divs 3KL in 1997 99 from Tagging Experiments written by and published by . This book was released on 2000 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes & presents results from a model used for estimating growth of Atlantic cod in NAFO Subdivision 3Ps and Divisions 3KL during 1997-99. Information from tag returns from the commercial, sentinel, & food fisheries in these regions during 1997-99 is used to estimate growth based on known lengths-at-release & times-at-liberty. The model incorporates the Von Bertalanffy growth model, modified to accommodate seasonal variations in growth, as well as a measurement bias component. The basic approach has been studied fairly extensively in the fisheries literature, and the paper presents a review of this literature. Important biases in estimating growth from tagging data are identified, and the magnitude of the bias in the analysis is estimated using a simple simulation. The estimated model is used to predict cod growth for times-at-liberty ranging from 0 to 3 years, and for fish lengths ranging between 40 & 90 centimetres.

Download or read book Updated estimates of exploitation rates and biomass for cod Gadus morhua in NAFO divisions 3KL and subdivision 3Ps during 1997 2000 from tagging experiments in these years written by Noel G. Cadigan and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Updated Estimates of Exploitation Rates and Biomass for Cod Gadus Morhua in NAFO Divisions 3KL and Subdivision 3Ps During 1997 2000 from Tagging Experiments in These Years written by and published by . This book was released on 2001 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper updates the analyses in a report by Cadigan & Brattey (2001) using additional recaptures from tagging experiments conducted in Northwest Atlantic Fisheries Organization Divisions 3K & 3L (3KL) and Subdivision 3Ps (eastern & southern Newfoundland) from 1997 to 2001. The additional recaptures occurred up to April 1, 2001. The methods of analysis used are identical to those in Cadigan & Brattey, with a few exceptions. It also provides an updated description of the data used for estimation and estimates exploitable biomass for three regions in 3KL & 3Ps for weeks in which sufficient landings (over 100 tonnes) were reported to get reasonable estimates.

Download or read book Seasonal Migration Patterns of Atlantic Cod Gadus Morhua in NAFO Subdivision 3Ps Based on Tagging Experiments During 1997 98 written by John Brattey and published by . This book was released on 1999 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Movements of Atlantic Cod Gadus Morhua in NAFO Subdiv 3Ps and Updated Estimates of Exploitation from Tagging Experiments in 1997 2002 written by and published by . This book was released on 2002 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: A mark-recapture study of Atlantic cod, initiated off southern Newfoundland in 1997, was continued in 2002. The purpose of the study was to provide information on movement patterns of inshore & offshore cod and to obtain estimates of exploitation rates on different components of the stock. This report presents annual estimates of exploitation for each tagging experiment during 1997-2002 and summarizes the spatial & temporal distribution of recaptures of tagged cod released in various regions of the south coast during 1997-2002 and reported as recaptured up to the end of September 2002. The report also illustrates the distribution of recaptures from tagging.

Download or read book Updated Estimates of Exploitation Rates and Biomass for Cod Gadus Morhua in NAFO Divisions 3KL and Subdivision 3Ps During 1997 2000 from Tagging Experiments in These Years written by Cadigan, Noel G and published by . This book was released on 2002 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimation of Cod Gadus Morhua Growth in NAFO Subdiv 3Ps and Divs 3KL in 1997 1999 from Tagging Experiments written by Noel G. Cadigan and published by . This book was released on 2000 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lower Bounds on the Exploitation of Cod Gadus Morhua in NAFO Divs 3KL and Subdiv 3Ps During 1997 1999 from Tagging Experiments written by Cadigan, Noel G and published by . This book was released on 2000 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stock Structure and Seasonal Migration Patterns of Atlantic Cod Gadus Morhua Based on Inshore Tagging Experiments in Divs 3KL During 1995 97 written by John Brattey and published by . This book was released on 1999 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Exploitation Rates and Movements of Atlantic Cod Gadus Morhua in NAFO Subdiv 3Ps Based on Tagging Experiments Conducted During 1997 2001 written by Brattey, J. (John) and published by . This book was released on 2002 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Exploitation of Atlantic Cod Gadus Morhua in NAFO Subdiv 3Ps written by John Brattey and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seasonal Migration Patterns of Atlantic Cod Gadus Morhua in NAFO Subdivision 3Ps Based on Tagging Experiments During 1997 98 written by John Brattey and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Movements of Atlantic Cod Gadus Morhua in NAFO Subdiv 3Ps and Updated Estimates of Exploitation from Tagging Experiments in 1997 2002 written by Brattey, J. (John) and published by . This book was released on 2002 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Updated Estimates of Exploitation from Tagging of Atlantic Cod Gadus Morhua in NAFO Subdiv 3Ps During 1997 2003 written by Brattey, J. (John) and published by . This book was released on 2003 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: