Hekkebestanden av teist pa to oyer i Troms
By: Svein Myrberget
Published: 1981
Language: eng
Number of pages: 242
Description: Number of breeding black guillemots in an area in northern Norway, 1960-1981. Suggests that the main reason for an observed decrease is a high adult mortality in monofile fishing nets.
Notes: Litteratur:p.244.