Habitat Selection by Spiders on Coastal Sand Dunes in Scania, Sweden

in Insect Systematics & Evolution
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Abstract

This paper deals with the habitat selection of I5 species of spiders on coastal sand dunes studied by the analysis of their spatial distribution of individuals correlated to some intrinsic factors and to environmental conditions. The data are based on a total of 82I samples of I m2 each collected in the course of I7 months at Sandhammaren, SE SkÅne, Sweden. The complicated interplay between the climatic and vegetational conditions of the area and the thermal tolerances, preferences and escape reactions, as well as the resistance to desiccation of the spider species was indicated in the variation of the distribution of the population densities in the biotopes of the dunes. The temperature proved to be a critical environment factor, a main cause of the distribution of the spiders, obvious for e.g. Clubiona trivialis C. Koch, while the humidity seemed to be more important for the habitat selection of Oedothorax apicatus (Bl.).

Insect Systematics & Evolution

An International Journal of Systematic Entomology

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