Buchholz, Sascha
(2009)
Spider Assemblages in an Inland Dune Complex
of Northwest Germany.
DROSERA - Naturkundliche Mitteilungen aus Norddeutschland, 2008 (1/2).
pp. 63-76.
ISSN 0341406X
Abstract
Spider assemblages in an inland dune complex of Northwest Germany. – The study
took place in the northern part of North Rhine-Westphalia in 2005. Nine sites in different habitat
types of an inland dune complex were sampled by pitfall trapping and hand collecting for
the presence of spiders. Sampling was done to determine a possible spider species community
that is characteristic of open inland dunes. Possible indicator species for these habitats
were sought. A total catch of 5,396 individuals included 136 species from 21 families.
Among them were 16 species listed in the Red Data Book of North Rhine-Westphalia, six of
the recorded species are listed as rare or had only seldom been recorded previously. A spider
assemblage of dry habitats could be separated from communities inhabiting agricultural
and forested sites by subjecting the spider data to a redundancy analysis (RDA). It was impossible
to define indicator species for open inland dune habitats, but the occurrence of
species typical of sand habitats indicates a certain importance of the fragmented sites of the
study area for nature conservation. Extensive habitat management is essential for a longterm
maintenance of those species.
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