Download or read book Results of the Acoustic Survey of Herring Stocks in NAFO Divisions 4T and 4Vn November 1986 written by R. Shotton and published by . This book was released on 1987 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the International Herring Symposium written by and published by . This book was released on 1991 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Results of the 1986 and 1987 Winter Acoustic Surveys of NAFO Div 4WX Herring Stocks written by U. Buerkle and published by . This book was released on 1987 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distributions and Acoustic Backscatter of Herring in NAFO Divisions 4T and 4Vn November December 1988 written by D.K. Cairns and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Results of Acoustic Surveys of the Southwest Nova Scotia NAFO Division 4WX Herring Stock During February and July 1981 written by Ross Shotton and published by . This book was released on 1982 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acoustic surveys of the 4WX herring stocks during winter and summer, 1981, obtained stock size estimates of 408 000 t and 201 000 t, respectively. Sampling error and unavailability of the stock to survey. during the summer period meant that there is a large amount of uncertainty In these estimates. Despite this, many of the problems associated with these surveys appear tractable and the continuation of these surveys should provide cost-effective estimates of the abundance of this herring stock.
Download or read book Results of the 1989 Winter Acoustic Surveys of NAFO Div 4WX Herring Stocks written by U. Buerkle and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Acoustic Backscatter of Herring in NAFO Divisions 4T and 4Vn Sept 23 Oct 08 1995 written by and published by . This book was released on 1996 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes & presents results of an acoustic survey for herring in the Gulf of St. Lawrence & Cape Breton areas. Survey efforts were concentrated in the Chaleur Bay & Miscou area and the Cape Breton area, where herring congregate in the fall. The survey also covered parts of north-east Prince Edward Island and the George's Bay area off Nova Scotia. Fishing for species identification & biological sampling was performed whenever concentrations of acoustic targets were detected. Results presented include geographic distribution of herring, mean biomass density & total biomass index, and catch at age.
Download or read book Distribution and Acoustic Backscatter of Herring in NAFO Divisions 4T and 4Vn Fall 1990 1992 written by C. LeBlanc and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Results of the 1990 Winter Acoustic Surveys of NAFO Div 4WX Herring Stocks written by Buerkle, U and published by St. Andrews, N.B. : Canadian Atlantic Fisheries Scientific Advisory Committee. This book was released on 1990 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of 1999 Herring Acoustic Surveys in NAFO Divisions 4WX written by G. D. Melvin and published by . This book was released on 2000 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Acoustic Backscatter of Herring in NAFO Division 4T November 1989 written by D.K. Cairns and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Acoustic Backscatter of Herring in NAFO Divisions 4T and 4Vn October 1993 written by Claude LeBlanc and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Atlantic Herring in NAFO Division 4T 1986 written by Edward Michael Pakenham Chadwick and published by . This book was released on 1986 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction to this assessment of the southern Gulf of St. Lawrence herring stock reviews the characteristics of the herring fishery. The assessment then presents the input data (landings, four types of abundance indices calculated from fishery catch rates & research survey data, catch & weight at age from fishery sampling, partial recruitment, natural & fishing mortality) and the assessment results for both spring & fall spawners. Finally, a prognosis for the stock to 1989 is presented and research needs are outlined.
Download or read book Summary of 2015 2016 and 2017 Herring Acoustic Surveys in Northwest Atlantic Fisheries Organization NAFO Divisions 4VWX written by Rabindra Singh and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Automated acoustic recording systems deployed on commercial fishing vessels have been used since 1997 to document the distribution and relative abundance of Atlantic Herring from industry vessel surveys and fishing excursions in the Bay of Fundy and coastal Nova Scotia area within Northwest Atlantic Fisheries Organization (NAFO) divisions 4VWX. During the years 2015 to 2017, regularly scheduled surveys at approximately 14 day intervals were again conducted on the main Herring spawning components, and the spawning stock biomass for each component was estimated by summing these results. Six structured surveys were conducted in Scots Bay in 2015, six in 2016, and eight in 2017. Five usable structured surveys were conducted on German Bank in both 2015 and 2016. There were four (plus two) surveys on German Bank in 2017. The September 17 survey was initially excluded because it was nine days after the previous one; however, this resulted in a 28-day gap before the next acceptable survey. Subesquently, at the 2018 assessment meeting, this survey was included. One acceptable structured survey was completed in the Trinity Ledge area in 2015, followed by three in 2016 and four in 2017. There were no structured surveys conducted in 2015 or 2016 for Spectacle Buoy; however, three fall surveys were completed in 2017. In most cases, these surveys provided good coverage of the spawning areas consistent with established protocols"--Abstract, page iv.
Download or read book Assessment of Atlantic Herring in NAFO Division 4T 1986 written by Chadwick, E. M. P. (Edward Michael Pakenham) and published by [Dartmouth, N.S.] : Canadian Atlantic Fisheries Scientific Advisory Committee. This book was released on 1986* with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Atlantic Herring in NAFO Division 4T 1987 written by Edward Michael Pakenham Chadwick and published by . This book was released on 1988 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Data from 2015 2016 and 2017 Herring Acoustic Surveys in the Northwest Atlantic Fisheries Organization Divisions 4VWX written by Rabindra Singh and published by . This book was released on 2019 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
