NDLI: Diversity of grass-dwelling spiders (Arachnida: Araneae) in calcareous fens of the Coastal Lowland, Latvia

Content Provider	Springer Nature Link
Author	Štokmane, Maija Spuņģis, Voldemārs
Copyright Year	2014
Abstract	Calcareous fens have a high conservation priority in the European Union. They are very unique, very sensitive and very rare habitats in Latvia as well as in many other European countries. Because of their rarity, many organisms living in calcareous fens are nowadays considered threatened. The same is applied to spiders. Spiders have been suggested as good biodiversity indicators because they have numerous direct and indirect relationships with other organisms. Only few investigations have been carried out on fen inhabiting spiders. The knowledge of grass-dwelling spiders is especially lacking. Thus the aim of this study was to evaluate grass-dwelling spider diversity in several calcareous fens of Latvia, compare these fens and to find out the habitat features that might affect grass-layer inhabiting spiders. The research was carried out in eight calcareous fens located in the Coastal Lowland of Latvia. A total of 760 spiders from nine families and 20 species were collected with a sweep net. Two of the most abundant spider species were Dolomedes fimbriatus (Clerck, 1757) and Tibellus maritimus (Menge, 1875). Diversity indices suggested that the grass-dwelling spider community consists of few abundant species and numerous rare species. Correlation analysis as well as DCA showed that plant species diversity did not significantly affect spider species richness and diversity, although at the same time there were a lot of significant associations between spiders and individual plant species. It was shown that various spider species responded very differently to the presence of particular plant species, and thus habitat structural heterogeneity emerges to be an important factor influencing the grass-dwelling spider diversity and community structure. Correlation analysis also revealed that spider abundance was negatively affected by the vegetation height and wind speed.
Starting Page	757
Ending Page	769
Page Count	13
File Format	PDF
ISSN	1366638X
Journal	Journal of Insect Conservation
Volume Number	18
Issue Number	5
e-ISSN	15729753
Language	English
Publisher	Springer International Publishing
Publisher Date	2014-08-09
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Araneae Grass-dwelling spiders Species diversity Calcareous fens Entomology Conservation Biology/Ecology Biodiversity Animal Ecology Life Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Animal Science and Zoology Nature and Landscape Conservation Insect Science

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