Blar i Brage IMR på forfatter "Ugland, Karl Inne"
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Geographic variation and acoustic structure of the underwater vocalization of harbor seal (Phoca vitulina) in Norway, Sweden and Scotland
Bjørgesæter, Anders; Ugland, Karl Inne; Bjørge, Arne (Journal article; Peer reviewed, 2004)The male harbor seal (Phoca vitulina) produces broadband nonharmonic vocalizations underwater during the breeding season. In total, 120 vocalizations from six colonies were analyzed to provide a description of the acoustic ... -
Harp seal (Phoca Groenlandica) invasions in north Norwegian coastal waters: A preliminary report on age composition and feeding habits
Haug, Tore; Krøyer, Ari B.; Nilssen, Kjell Tormod; Ugland, Karl Inne (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 ...