Species Diversity of Edaphic Mesostigmatid Mites (Acari: Mesostigmata) of Arasbaran Forest

Species diversity, effect of edaphic mesostigmatid mites and their feeding habits on natural equilibrium of soil creatures is very important and of indices of changes in ecosystems. In this study, our goals were collecting and evaluating of diversity of soil specimens in four sights of Arasbaran forests in summer 2013. Biodiversity indices of Shannon, Simpson and Brillouin in addition to evenness index of Simpson, Camargo and Smith-Wilson calculated by means of ecological methodology 6.0 software. Our results revealed that the maximum relative abundance belongs to Veigaia nemorensis (Koch, 1836) with 11.54% andVeigaia planicola (Berlese, 1882) with 8.34% both from Veigaiidae family and minimum belongs to Sejus sp. from family sejidae with 0.17%. Maximum rate of Shannon’s and Simpson’s diversity was respectively 4.61 and 0.97 in Kalaleh area, with maximum collected species number rate of Simpson’s evenness index also belongs to this area with 0.65 percent. The high frequency of mites of family Veigaiidae can be attributed to their strength of predatory and fauna richness in the soil.