?????????????????????? ?????????????????? ???????????????? ?????????????????????????? ?? ???????????????? ???????????????????????? ???? ???????????? ???????????? ?????????????????? ?????????????????? Mytilus galloprovincialis ?? ?????????????? ???????????????? ??????????????. ????????????????, ?????? ?????? ?????????????? ?????????????? ???? ???????????????????????????? ???????????? ???????????????????????? ???????? ????????????????????. ???????????????? ???????????????????? ?????????????????????????? ?????????????????? ???????????? ??????????????, ?? ???????????????????? ???????????????????????? ??? ???????????? ???????????????? ?? ???????????? ???????????? ?? ???????????????????? ????????????????????. ???????????????????? ?????????????? ???????????????????????? ?? ???????????????? ???????????????????????? ?????????????? ?????????????????????????? ???????????????????? ???? ???????????? ???????????????????????????? ??????????????????.

Changes of domination and species diversity indices at different stages of Mytilus galloprovincialis biocenose succession in the areas of fish-kill development are considered. It is shown that these indices depend on comparative abundance of leading species of community. The values of domination index turned out to be the lowest and the values of diversity index ??? the highest in the period of fish-kill and community degradation. The lowest species diversity and the most important domination degree are noted at these levels of biocenose restoration.