Home – Home – Jornals – Contemporary Problems of Ecology 2006 number 5

The problem of the features of expansion with the invasive species of water ecosystems of East Transbaikalia is considered for the example of the Bailkanian amphipod Gmelinoides fasciatus (Stebbing, 1899). Settling of G. fasciatus from the Ivano-Arakhley lakes is negatively affected by the summer mean-water intermittence of the brooks flowing out of the lakes and their freezing during the winter mean water period. In Lake Arakhley, the major effect on the spatial distribution of this species during the summer period is caused by the depth, the character of bottom sediments, near-bottom temperature, and the amount of oxygen dissolved in water. The features of the life cycle of G. fasciatus in the lake, the effect of the invader species on the population of the local amphipod species Gammarus lacustris (Sars, 1863) and macro-animal benthos were revealed.