At-sea observations of the spring migration and pair bonding of ivory gulls (Pagophila eburnea) around Svalbard and East Greenland

Polar research

Henrik Kylin¹ 

[1] Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences PO Box 7050SE-750 07UppsalaSweden Correspondence

关键词: Ivory gull;    Pagophila eburnea;    mate selection;    pair bonding;    feeding behaviour;    inter-species competition.;   

DOI  :  10.3402/polar.v30i0.6421

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

Because of logistical constraints little previous information exists on ivory gulls (Pagophila eburnea) in the waters around Svalbard and the east coast of Greenland in late winter/early spring. The Swedish Arctic Ocean 2002 expedition investigated these areas at that time of year and in this paper I report on the observations of ivory gulls made during the expedition. The ivory gull was essentially absent from open waters but was the most common seabird in areas with pack ice, showing behavioural differences depending on local conditions. Generally, the number of ivory gulls was low when there was little plankton in the water. Ivory gulls followed the ship depending on the availability of food items in the wake and also depending on competition from other species, particularly glaucous gulls (Larus hyperboreus). Although ivory gulls were present in most of Fram Strait and the northern part of the East Greenland Current during 6 and 19 May, sightings were few and correlated to the amount of plankton in th...

【 授权许可】

CC BY-NC