Impact of long effect of lime dust emission on spidery fauna of pine biogeocenose

The article provides data on impact of long effect of lime dust, disposed into atmosphere by the lime-sand brick enterprise, on number and complex structure of spidery animals (Arachnida: Aranei, Opiliones) of pine biogeocenose. 62 species of spider were determined, including 5 new for Mari El Republic, and 2 species of cellar-spider. There were identified most informative bio indicative factors of complex structure of arachnids for diagnosis of effect level of long lime pollution on pine biogeocenose.