Dynamics of demersal fish community structure in shelf waters of western Kamchatka
Tendencies of quantitative structure of demersal fishes community on the western Kamchatka shelf are analyzed on the base of 10 bottom trawl surveys conducted in 19962005. Two shifts are revealed with changes of flatfishes biomass and the total biomass of demersal fishes: increasing in early 1980s and decreasing in late 1990s. The same reasons as for pelagic communities changes are supposed: i.e. changes of climate-oceanological conditions and biotic environments. However, these factors influence on bottom community with a delay because of greater inertia of bottom ecosystems.