Change the group structure of Amur tiger in Sikhote-Alin biosphere reserve according to photoaccounts

Since 2006 in Sikhote-Alin Biosphere Reserve monitoring of local tiger group by means of phototraps is carried out. In the southern and central parts of the reserve 44 different tigers were photographed. Only one tiger was marked out by traps within 8 years of the photoaccount. 26 tigers were photographed no more than one year. The reasons of disappearance of tigers from the research territory: death for the natural reasons - 7 cases, death as a result of poaching - 4 cases, 7 young tigers were settled from the research territory. The most intensive speed of change the individuals occurs in the southern part of the reserve which is characterized by higher anthropogenous loading.