Zoogeographical freshwater divisions of the Caucasus as a part of the West Asian Transitional Region
Journal: Proceedings of the Zoological Institute RAS
Year: 2010

The Caucasus, together with Anatolia, Mesopotamia, internal Iranian and Afghan drainages form a region of extremely high heterogeneity and transitional character between the “true” Holarctic, Sino-Indian and African regions sensu Berg (e.g. 1934, 1949). Its zoogeographical delineation is therefore of considerable interest. The goal of this study was to analyse zoogeographical affinities of the Caucasian ecoregions in terms of fish distribution and estimate the rank of the zoogeographical boundar