Lichen composition in the floodplain of the Agan river (Khanty-Mansiysk autonomous area - Yugra)

The paper presents the results of the study carried out in the forest areas of Khanty-Mansiysk Autonomous Area - Yugra in the upper reaches of the Agan River in 2014. The researchers studied the lichens on 4 sites, including 2 pilot sites exposed to fires of 1992 and 2001, one pilot site in the oil pollution area, and one control site in vivo. The aim was to identify the taxonomic diversity of lichens under human impact and their ecological and floristic characteristics (exemplified by a forest site in the upper part of the Agan River). The study revealed 72 lichen species belonging to 29 genera, with the most diverse composition of 77.8% in an area with no human impact. The new data obtained in Khanty-Mansiysk Autonomous Area showed negative human impact on lichens. For instance, the forests exposed to fires in 1992, have 58.3% of lichens, and 48.6% lichens in 2001. The smallest variety of lichens was observed at the geological exploration site (23.6%). The largest number of indicator species was observed on the background site (29) and the lowest was on the site with geolodical exploration facilities...