Download or read book Distribution and Abundance of Harbour Seals Phoca Vitulina Concolor and Grey Seals Halichoerus Grypus in the Estuary and Gulf of St Lawrence 1994 2001 written by Hammill, M. O. (Michael O.) and published by Mont-Joli, Québec : Fisheries and Oceans Canada. This book was released on 2005 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Harbour Seal Phoca Vitulina and Grey Seal Halichoerus Grypus Abundance in the St Lawrence Estuary written by Maurice Lamontagne Institute and published by . This book was released on 1995 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: An aerial survey and several boat surveys were conducted during April-September 1994 to obtain information on harbour and grey seal abundance and distribution in the Saint-Lawrence Estuary. A total of 389 harbour seals and 111 grey seals were counted on or near haul-out sites during the aerial survey flown in August.

Download or read book Harbour Seal Phoca Vitulina and Grey Seal Halichoerus Grypus Abundance in the St Lawrence Estuary written by V. Lesage and published by Mont-Joli, Québec : Fisheries and Oceans, Canada. This book was released on 1995 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spatial Distribution and Count of Harbour Seals Phoca Vitulina and Grey Seals Halichoerus Grypus in the Estuary and Gulf of St Lawrence from an Aerial Survey Conducted June 2019 written by Arnaud Mosnier and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In June 2019, a helicopter survey was conducted to determine harbour and grey seals distribution and abundance in the Estuary and Gulf of St. Lawrence. A total of 5,714 harbour seals and 14,691 grey seals were counted at haul-out sites. In the estuary, 2,140 harbour seals and 839 grey seals were counted, representing a significant increase from surveys conducted in 1995-96 and 2000, particularly in the upper estuary for grey seals and in the lower estuary for harbour seals. In the Gulf, grey seals were dominant (13,852 grey seals versus 3,574 harbour seals). Counts were higher than in previous surveys, due to both a larger survey area being covered in 2019, and a greater number of animals present in areas covered during previous surveys. The 2019 survey provides the first comprehensive count and spatial distribution data for harbor seals and grey seals over the entire Estuary and Gulf of St. Lawrence. Combined with information from similar surveys conducted in other regions in eastern Canada, these data will serve to improve knowledge of the population size and distribution of both species in this area"--Abstract.

Download or read book Annual Report written by North Atlantic Marine Mammal Commission and published by . This book was released on 2007 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Distribution and Abundance of Harbor Seals Phoca Vitulina Concolor and Gray Seals Halichoerus Grypus in Southern New England Winter 1998 summer 1999 written by Margaret E. Barlas and published by . This book was released on 1999 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distribution and Counts of Harbour Phoca Vitulina and Grey Seals Halichoerus Grypus on the Atlantic Coast of Nova Scotia and Bay of Fundy from Aerial and Land Surveys 2019 2021 written by Damian Lidgard and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Our knowledge of the summer abundance and distribution of harbour and grey seals in eastern Canada is limited due to lack of surveys. Between 2019 and 2021, land and aerial surveys were conducted to determine the size and distribution of harbour and grey seal haulouts along the Atlantic coast of Nova Scotia (NS) and Bay of Fundy and in the Bras D'Or Lake, NS"--Abstract.

Download or read book The Distribution and Abundance of Harbor Seals Phoca Vitulina Concolor in the Woods Hole Region written by Pieter Andrew Philip DeHart and published by . This book was released on 2002 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habour seal Phoca vitulina and Grey seal Halichoerus gripus Abundance in the St Lawrence Estuary written by V. Lesage and published by . This book was released on 1995 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Counts and Spatial Distribution of Harbour Seals Phoca Vitulina and Grey Seals Halichoerus Grypus from an Aerial Survey of the Coast of the Newfoundland Shelf and Sandwich Bay Labrador During the Summer of 2021 written by Charmain D. Hamilton and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Harbour seals reside throughout the year around Newfoundland and Labrador (NL) at unknown abundance levels. The first systematic survey for harbour seals occurred along the NL Shelf during July and August 2021 to obtain haul-out counts and assess distribution. Grey seals were also recorded as these two species can share haul-out locations. Photographic surveys were flown along the coastline with a Bell 429 helicopter. 3,341 seals were seen hauled out and identified as harbour, grey or unknown seals. After the unknown seals were assigned to species, 2,961 harbour and 380 grey seals were estimated to be seen. The largest numbers of harbour seals were found in the Grey Islands, Saint Pierre and Miquelon (France) and along the southern coast of Newfoundland east of Bay d'Espoir. Grey seals were only observed hauled out in southern Newfoundland, primarily west of Placentia Bay. No seals were seen hauled out in Sandwich Bay, Labrador. Despite differences in methodology compared to previous work, the results indicate that harbour seals have disappeared from previously occupied areas. Although increases have probably occurred in some areas, this species has likely not regained the abundance levels present before the bounty hunt (1952-1976). Future surveys are needed to understand regional population trends and gain a better understanding of counts and distribution in Labrador"--Abstract, page iv.

Download or read book Seasonal Abundance Distribution and Ecology of the Harbor Seal Phoca Vitulina Richardsi on San Miguel Island California written by Brent S Stewart and published by . This book was released on 1981 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Status Review written by John L. Sease and published by . This book was released on 1992 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gray Seals in Nantucket Sound Massachusetts Winter and Spring 1994 written by Valerie Rough and published by . This book was released on 1995 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Stocks of Grey Seals Halichoerus Grypus and Common Seals Phoca Vitulina in Great Britain written by W. Nigel Bonner and published by . This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Grey Seal Halichoerus Grypus Distribution During 1983 84 in the Gulf of St Lawrence as Observed by Aerial Survey written by Canada. Department of Fisheries and Oceans and published by . This book was released on 1985 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abundance of Northwest Atlantic Grey Seals in the Gulf of St Lawrence and Along the Nova Scotia Eastern Shore written by Michael O. Hammill and published by . This book was released on 2005 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 2012 Population Estimate for the Harbor Seal Phoca Vitulina Concolor in New England Waters written by Gordon T. Waring and published by . This book was released on 2015 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This survey was conducted to obtain an abundance estimate for the New England harbor seal (Phoca vitulina concolor) population, as the previous estimate (2001) was outdated for stock assessment purposes. Aerial photographic surveys and radio tracking of harbor seals on ledges along the Maine coast were conducted during the pupping period in late May 2012. Twenty-nine harbor seals (20 adults and 9 juveniles) were captured and radio-tagged prior to the aerial survey. Of these, 18 animals (6 adult males, 6 adult females, 2 juvenile males and 4 juvenile females) were available during the survey to develop a correction factor for the fraction of seals not observed. The estimate of harbor seal abundance in 2012 was 75,834 (11,625 standard deviation [sd]; 0.153 coefficient of variation [CV]). Nmin, the lower 20% confidence limit, was 66,884. The 2012 point estimate is 24% lower than the 99,340 reported for 2001. Possible reasons for the lower estimate include changes in survey design, differences in the age/sex ratio of radio-tagged seals available for obtaining a correction factor, differences in harbor seal distribution between 2001 and 2012, and/or that the population has actually declined. [doi:10.7289/V5ZC80VT (http://dx.doi.org/10.7289/V5ZC80VT)]