Blar i ICES CM documents authored by IMR scientists (1949-2011) på emneord "harp seal"
Viser treff 1-20 av 29
-
A study of genetic variation in northeast Atlantic harp seals (Pagophilus groenlandicus)
(ICES CM Documents;1991/N:5, Working paper, 1991)16 enzymes were examined for genetic studies of the harp seal population structure in the Northeast Atlantic. Muscle and liver samples were collected in the West Ice off Jan Mayen and in the Eastern Barents Sea in 1987, ... -
Diet of harp seals (Phoca groenlandica) feeding between the breeding and moulting seasons in the southern Barents and White Seas
(ICES CM Documents;1993/N:8, Working paper, 1993)The harp seal Phoca groenlandica is the most abundant seal species in the Barents Sea. In order to evaluate the ecological importance of the species, diet studies have recently been carried out at various times of the ... -
Estimating Abundance of Seals in a Drifting Environment: 2005: Pup Production of Harp Seals, Pagophilus groenlandicus, in the Northwest Atlantic
(ICES CM Documents;2005/R:06, Working paper, 2005)Photographic and visual aerial surveys to determine current pup production of northwest Atlantic harp seals were conducted off Newfoundland and Labrador (the “Front”), and in the Gulf of St. Lawrence during March 2004. ... -
Estimation of harp seal pup production in the Greenland Sea using spatial analysis on aerial survey data
(ICES CM documents, Working paper, 2005)From 14 March to 6 April 2002 aerial surveys were carried out in the Greenland Sea packice to assess the pup production of the Greenland Sea population of harp seals Pagophilus groenlandicus. One xed-wing twin-engined ... -
Field studies of harp seal (Phoca Groenlandica) distribution and feeding ecology in the Barents Sea in september 1990
(ICES CM Documents;1991/N:3, Working paper, 1991)The harp seal Phoca groenlandica is the most abundant seal species in the Barents Sea, and it may be a significant predator on other marine resources in this area. In order to evaluate the ecological role of harp seals, ... -
Harp seal (Phoca Groenlandica) invasions in north Norwegian coastal waters: A preliminary report on age composition and feeding habits
(ICES CM Documents;1990/N:6, Working paper, 1990)Since 1978 large numbers of harp seals (Phoca groenlandica) have invaded areas of North Norway in winter and spring. In 1987 and 1988 dramatic increases occurred both in magnitude and geographic extent of these seal ... -
Preliminary data on feeding and condition of Barents Sea harp seals (Phoca Groenlandica) throughout the year
(ICES CM Documents;1992/N:5, Working paper, 1992)In order to evaluate the ecological role of the most abundant seal species in the Barents Sea, the harp seal Phoca groenlandica, field studies have been carried out in September 1990, in February, March/April, June and ... -
Prey consumtion by Barents sea harp seals in the period 1990-2005
(ICES CM documents, Working paper, 2006)The Barents Sea ecosystem has experienced major fluctuations in species abundance in the past 20-30 years. The mechanisms behind these fluctuations are complex and arise from numerous interactions between species and the ... -
Recent age compositions and aberrant migration patterns of the Barents Sea stock of harp seals Phoca groenlandica
(ICES CM Documents;1996/N:4, Working paper, 1996)Since 1978, and in particular in 1986-1988, large numbers of harp seals Phoca groenlandica have invaded coastal waters of North Norway during winter and spring. After 1988 the harp seal invasions have been restricted to ... -
Report of the ICES/NAFO working group of harp and hooded seals (WGHARP) [30 August - 3 September 2005 St. Johns, Newfoundland, Canada]
(ICES CM documents;2006/ACFM:06, Working paper, 2006) -
Report of the ICES/NAFO Working Group on Harp and Hooded Seals [2- 6 September, 2003, Arkhangelsk, Russia]
(ICES CM Documents;2004/ACFM:6, Working paper, 2004) -
Report of the ICES/NAFO Workshop on Survey Methodology for Harp and Hooded Seals [SevPINRO, Archangelsk, Russia, 5- 12 October, 1992]
(ICES CM Documents;1993/N:2, Working paper, 1993) -
Report of the Joint ICES/NAFO Working Group on Harp and Hooded Seals [Copenhagen, 14- 18 October, 1991]
(ICES CM Documents;1992/Assess:5, Working paper, 1992) -
Report of the Joint ICES/NAFO Working Group on Harp and Hooded Seals [Dartmouth, N.S. Canada, 5- 9 June, 1995]
(ICES CM Documents;1995/Assess:20, Working paper, 1995) -
Report of the Joint ICES/NAFO Working Group on Harp and Hooded Seals [ICES Headquarters, 2- 6 October, 2000]
(ICES CM Documents;2001/ACFM:8, Working paper, 2001) -
Report of the Joint ICES/NAFO Working Group on Harp and Hooded Seals [ICES Headquarters, 28 August - 3 September, 1997]
(ICES CM Documents;1998/Assess:3, Working paper, 1998) -
Report of the Joint ICES/NAFO Working Group on Harp and Hooded Seals [ICES Headquarters, 28 August - 3 September, 1997]
(ICES CM Documents;1998/Assess:3, Working paper, 1998) -
Report of the Joint ICES/NAFO Working Group on Harp and Hooded Seals [Tromsø, 29 September - 2 October, 1998]
(ICES CM Documents;1999/ACFM:7, Working paper, 1999) -
Report of the Working Group on Harp and Hooded Seals (WGHARP) [15 - 19 August 2011 St. Andrews, Scotland, UK]
(ICES CM documents;2011/ACOM:20, Working paper, 2011) -
Report of the Working Group on Harp and Hooded Seals (WGHARP) [24 -27 August 2009 Copenhagen, Denmark]
(ICES CM documents;2009 /ACOM:17, Working paper, 2009)