Molluscs in Kongsfjorden (Spitsbergen, Svalbard): a species list and patterns of distribution and diversity

Polar research

Maria Wlodarska-Kowalczuk¹ 

[1] Institute of Oceanology, Polish Academy of Sciences, Sopot, PolandCorrespondence

关键词: Mollusca;    glacial fjord;    species list;    species distribution;    diversity;    Svalbard.;   

DOI  :  10.1111/j.1751-8369.2007.00003.x

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

This paper presents a survey of the mollusc fauna in Kongsfjorden, an Arctic glacial fjord in Spitsbergen, Svalbard, based on 197 samples collected with van Veen grabs, dredges, scuba-diving collections and baited traps at depths ranging from 5 to 390 m. Eighty-seven mollusc species were recorded. The species distribution accords well with the distribution of the main substrata: barren rock, kelp bed, gravel and soft bottom. For the most common substrate type, the soft bottom, the distribution and diversity of molluscs were analysed in relation to environmental factors. Glacial activity (particularly the inflow of glacial meltwater loaded with mineral solids) is responsible for the main gradients of environmental variables in the fjord. Silt concentration in sediments, the water temperature near the bottom and inorganic suspensions in the surface water best predict the species distribution of the soft bottom. Two faunal associations located in glacial bays and three faunal associations in the central basi...

【 授权许可】

CC BY-NC