Emerging patterns of species richness, diversity, population density, and distribution in the skates (Rajidae) of Alaska

摘要: Six years of bottom-trawl survey data, including over 6000 trawls covering 200 km2 bottom area throughout Alaska’s subarctic marine waters, were analyzed for patterns in species richness, diversity, density, and distribution skates. The Bering Sea continental shelf slope, Aleutian Islands, Gulf Alaska regions stratified by geographic subregion depth. Species richness relative density skates increased with depth to the break all regions. was dominated skate (Bathyraja parmifera), but diversity low. On higher shallow stratum, appeared subregions canyons. In Islands Alaska, generally highest deepest strata. data maps presented here are based on species-level collected waters this article represents most comprehensive summary fauna region published date.