Discussion

• Main Authors: Vertebrates From Hornsund, Christian Lydersen, Fan Gjertz, Jan Marcin Weslawski
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 1988
• Subjects: Conclusion; Hornsund; Urd; bearded seal; Cepphus grylle; fratercula; Larus hyperboreus; Phoca hispida; Tundra; Uria lomvia; uria
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.610.5960; http://www.iopan.gda.pl/ekologia/pdfpapersekologia/Lydersen 1989.pdf

ABSTRACT. Stomachs of 171 vcrtebrates (two species of fish, eightof birds;urd trvo of seals) frorn Hornsund, Svllberci. rvcrccoilectedbctweenTSeptembcrand5Octoberl984. ArcticcodBoreogadussaidaandtheamphipod Parorhenti-sto libellula rvere the main prey species of black guillemots Cepphus grylle, little auks A/ie ci /e, pufl'ins Fratercula urctica, Brunnich's guillemots Uria lomvia, kittiwakes Rissa tridactylc and ringcd seals Phoca hispida. Fulmars Fulnutrw glocialis preyed mainly on the squid Gonatusfabricii utd the polychactc l,,lereis irrorrzra. Eiders Sornateria nnllissirna preyed mainly on bivalves and on the amphipod Gammarellus homari. G. homari utdGammartu oceanicus were lhe mostimportantpreyspeciesofstriped snailfish|rpcrisliparis,whileshorthornsculpinMyoxocephalusscorpiusmainly preyed qpon G. homari and Anonyx sarsi. Glaucous gulls Larus hyperboreus took many different prey including birds and tundra plants. Only one bearded seal Erignathus barbqtus stomach with content. was available for this stuilv.