Incidental Catches of Harbour Porpoises (Phocoena Phocoena) in the Gillnet Fishery of the Estuary and Gulf of St. Lawrence PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Incidental Catches of Harbour Porpoises (Phocoena Phocoena) in the Gillnet Fishery of the Estuary and Gulf of St. Lawrence PDF full book. Access full book title Incidental Catches of Harbour Porpoises (Phocoena Phocoena) in the Gillnet Fishery of the Estuary and Gulf of St. Lawrence by Canada. Department of Fisheries and Oceans. Download full books in PDF and EPUB format.
Author: Canada. Department of Fisheries and Oceans
Publisher: Mont-Joli, Québec : Fisheries and Oceans Canada
ISBN:
Category : Gillnetting
Languages : en
Pages : 37
Get Book Here
Book Description
Les mortalités accidentelles de marsouins communs associées a la pêche au filet maillant de l'estuaire et du golfe du Saint-Laurent furent examinées a l'aide de 1) questionnaires distribués aux pêcheurs et questionnant sur le nombre de prises accidentelles au cours de 2000 et 2001, et de 2) données provenant des programmes d'Observateurs en Mer et de Pêches Sentinelles de 2001 et 2002.
Author: Canada. Department of Fisheries and Oceans
Publisher: Mont-Joli, Québec : Fisheries and Oceans Canada
ISBN:
Category : Gillnetting
Languages : en
Pages : 37
Get Book Here
Book Description
Les mortalités accidentelles de marsouins communs associées a la pêche au filet maillant de l'estuaire et du golfe du Saint-Laurent furent examinées a l'aide de 1) questionnaires distribués aux pêcheurs et questionnant sur le nombre de prises accidentelles au cours de 2000 et 2001, et de 2) données provenant des programmes d'Observateurs en Mer et de Pêches Sentinelles de 2001 et 2002.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 37
Get Book Here
Book Description
This report examines the incidental catch of harbour porpoises in the gillnet fishery of the Estuary & Gulf of St. Lawrence, based on a questionnaire survey mailed to fishermen in 2000 & 2001 and on data from the At-Sea Observer & Sentinel Fisheries programs of 2001 & 2002. From these data, by-catch rates are estimated and differences in results among the data sources are discussed.
Author:
Publisher:
ISBN:
Category : Gillnetting
Languages : en
Pages : 37
Get Book Here
Book Description
Les mortalités accidentelles de marsouins communs associées a la pêche au filet maillant de l'estuaire et du golfe du Saint-Laurent furent examinées a l'aide de 1) questionnaires distribués aux pêcheurs et questionnant sur le nombre de prises accidentelles au cours de 2000 et 2001, et de 2) données provenant des programmes d'Observateurs en Mer et de Pêches Sentinelles de 2001 et 2002.
Author: Edward A. Trippel
Publisher: St. Andrews, N.B. : Fisheries and Oceans Canada
ISBN:
Category : Bycatches (Fisheries)
Languages : en
Pages : 42
Get Book Here
Book Description
The most serious threat to the status of harbour porpoise (Phocoena phocoena) is incidental mortalities caused by entanglement in fishing gear. As part of an ongoing study to evaluate the utility of mitigation techniques to reduce such harbour porpoise mortalities, observers were placed on-board vessels participating in the lower Bay of Fundy demersal gillnet fishery from 1998-2001. The number of vessels participating in the fishery declined from 22 in 1998 to 13 in 2001. Despite this decline, total annual effort remained relatively stable. Over the 4-yr period, a total of 52 porpoise mortalities were observed. all but four of which were in the Swallowtail region off Grand Manan, New Brunswick. For the Bay of Fundy, total estimated by-catch was 38, 32, 28, and 73 porpoises from 1998-2001, respectively. A lack of spatial and temporal observer coverage did not allow us to generate estimates of variance in by-catch estimates. In all years, the majority of the estimated porpoise by-catch occurred in the Swallowtail region. In general, by-catch was highest in July except in 1999 when it was highest in August. The increase in by-catch seen in 2001 was due to increased catch rates rather than increased effort. While the Canadian by-catch in 2001 appears low (73 porpoises), it was nearly as high as the U.S. by-catch (80 porpoises) which has a much larger fishery. Given that the Canadian by-catch appears to represent a significant source of mortality, observer coverage should be better allocated both spatially and temporally in the future so that more reliable by-catch estimates and their associated variance can be estimated
Author:
Publisher:
ISBN:
Category : Cetacea
Languages : en
Pages : 306
Get Book Here
Book Description
Author: International Whaling Commission
Publisher:
ISBN:
Category : Whaling
Languages : en
Pages : 718
Get Book Here
Book Description
Author: William F. Perrin
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 648
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Bycatches (Fisheries)
Languages : en
Pages : 196
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 722
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 42
Get Book Here
Book Description
