Application of Soil Oribatid Mites as Bioindicators in Impact Areas of the Gas Industry in the West Siberian Tundra
نویسندگان
چکیده
Atmospheric emissions from gas pre-treatment centers of the Gazprom Dobycha Yamburg LLC influenced the community of oribatid mites in southern tundra ecosystems. It was evidenced by changing the ratio of the ecological groups of the oribatid mites rather than its total abundance. The euedaphic oribatid mites prevailed essentially in the mites community of more contaminated biotopes located closer to the source of atmospheric pollution. In the conditions of decreasing pollution levels, the mites community structure was changed to predominance of litter-surface oribatid mites species, larger in size and typical for undisturbed natural communities. Level of pollution was evaluated on the basis of cumulative index of anthropogenic pollution load per unit of an ecosystem surface (IPLS). It was found that the best characteristic of bioindication of pollution is the ratio of litter-topsoil oribatid mites to euedaphic ones (RL/S). Very simple equation with significantly high determination coefficient was obtained to describe this dependence: RL/S = 4.84 – Ln(IPLS).
منابع مشابه
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