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1 Polish Journal of Ecology

1 1999

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Effect of spruce forest decline on spider communities of Karkonosze Mts.

Łuczak J., Woźny M.

Polish Journal of Ecology

1999

Vol. 47, no 4

429-447

Effects of spruce forest degradation on quantitative and qualitative diversity of communities of epigeic spiders and spiders inhabiting herb and shrub layer were studied in Karkonosze Mts. It has been found that epigeic spiders have preferred degraded forest habitats, whereas spiders inhabiting herb layer, mainly web spiders were most abundant in old-growth living spruce forests and, during spring - also in spruce thickets. Some 15% only of epigeic spiders numbers and 20% of web spiders of the herb layer were common to all of the three habitat types examined: living spruce forests, degraded forests and spruce thickets (young spruce forest). This reflects spatial diversity of the spider communities. An analysis was made of these differences, as well as of the difference between the upper and lower montane zone with regard to colonisation by the spiders.