Symposium Introduction

Human impacts on wildlife consists of direct influence and indirect changes in the environment. One form of direct impact on Plants and animals - logging. Finding themselves suddenly in the open habitats, plants of the lower tiers of the forest have an adverse effect direct solar radiation. In thermophilic plants, herbaceous and shrub layers destroys chlorophyll, inhibited the growth of some species disappear. On the ground, cutting settle light-loving plants that are resistant to elevated temperature and lack of moisture. Changing and fauna: species related by stands disappear, or migrate to other places. Tangible impact on the vegetation cover to provide massive forest visits vacationers and tourists. In these cases, the adverse effect is trampling, soil compaction and pollution. Wood plants wither. Direct human impact on wildlife is extermination of species of food for him or other material favor.

It is believed that in 1600 people were massacred more than 160 species and subspecies of birds and at least 100 species of mammals. In the long list extinct species had been on tour - a wild bull, who lived in Europe. In XVIII century was extirpated described Russian naturalist GV Steller sea cow - aquatic mammal, referring to the category of Siren.