Abstract
After experimental surveys by ship-borne helicopter and fixed-wing aircraft in 1990, harp seal breeding patches were surveyed in the Greenland Sea pack-ice (the West Ice) in the spring of 1991. Combined estimates based on data from visual helicopter transects and aerial photographic transect surveys indicate a minimum total production in excess of 55,000 harp seal pups in the West Ice in 1991. Extreme weather conditions and an exceptional westerly distribution of the pack-ice impeded attempts to survey West Ice hooded seal pups in 1994. Classified counts suggest late births of harp seal pups in 1990 when compared to 1991. Less precise data suggest comparable timing of peak pupping but a wider temporal distribution of hooded seal births in 1994 than in 1991. Published results from analyses of still-camera and video material confirm that image-analysis may be used to obtain useful information on environmental conditions and the spatial distribution and sizes of seals in pack-ice breeding patches.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
