Marusik, Y. M., and Koponen, S., 2002, Diversity Of Spiders In Boreal And Arctic Zones: Journal of Arachnology, v. 30, no. 2, p. 205-210.
Summary
During the last two decades a great number of studies dealing witharctic and boreal spiders have been published, both in thePalaearctic and the Nearctic. Such an increase in informationmakes it possible to analyze basic patterns of spider diversity inthe North as well as to show areas where further studies are stillnecessary. The number of species found in faunas of larger areasnorth of 60 degree N varies from 620 (Finland) to 250 (PolarUrals) and 300 (Yukon), when island faunas are excluded. Twoareas, divided by the Bering Strait, Northeastern Siberia andnorth-western North America have marked proportion of endemic taxa(ca. 8 %) belonging to several spider families. Considerablenumber of endemic spiders are known also in Middle Siberia. [...]
Summary
During the last two decades a great number of studies dealing witharctic and boreal spiders have been published, both in thePalaearctic and the Nearctic. Such an increase in informationmakes it possible to analyze basic patterns of spider diversity inthe North as well as to show areas where further studies are stillnecessary. The number of species found in faunas of larger areasnorth of 60 degree N varies from 620 (Finland) to 250 (PolarUrals) and 300 (Yukon), when island faunas are excluded. Twoareas, divided by the Bering Strait, Northeastern Siberia andnorth-western North America have marked proportion of endemic taxa(ca. 8 %) belonging to several spider families. Considerablenumber of endemic spiders are known also in Middle Siberia. Thenumber of spiders in local faunas of the boreal zone varies around300 species. Study of species composition in more than 20 localnorthern faunas reveals that proportion of Lycosidae species ineach local fauna varies in smallest range (7-12 % of all speciesfound) in comparison to other families. Thus Lycosidae can be usedas an indicator group of general species diversity of spiders inlocal faunas.