✦ LIBER ✦

Spatial Distribution and Diversity of Macroinvertebrates on the Stony Shore of a Subarctic Lake

✍ Scribed by Anders Klemetsen; J. Malcolm Elliott

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 403 KB
Volume: 95
Category: Article
ISSN: 1434-2944
DOI: 10.1002/iroh.200911199

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✦ Synopsis

Abstract

Quantitative samples taken with a new colonisation sampler over three years demonstrated a macroinvertebrate community of 25 taxa in the stony littoral of Takvatn, North Norway. The spatial variance was density‐dependent and the ‘index of aggregation’ varied in the range 1.01–1.73 for 13 common taxa. The distribution was significantly aggregated for 10 taxa and close to random for three taxa. The taxon richness and diversity was lower than in southern oligotrophic Fennoscandian lakes but higher than in northern Swedish lakes. Takvatn had more Plecoptera and fewer Trichoptera than most other lakes. All Plecoptera and Ephemeroptera in the lake occur in northern Norwegian rivers and typically lotic species were prominent in the lake‐shore community. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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