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Sorex cinereus group southern clade

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From Hope et al. (2012): "The Southern clade is represented by five nominal species (Hutterer, 2005): Sorex cinereus (sensu stricto) is the most widespread shrew in North America occupying most available boreal coniferous forest in the west and north, and deciduous forests of the east (Whitaker, 2004). Occurrence of S. cinereus in the southwestern United States comprises mountaintop sky island populations within remnant patches of previously more widespread forest. Along the Pacific and Atlantic coasts, S. cinereus is represented on multiple land-bridge islands, although there are few systematic assessments of these populations (e.g., Stewart and Baker, 1992) and their evolutionary histories remain poorly understood. Sorex cinereus has also spread northward to treeline to occupy much of Canada and Alaska reflecting a rapid range expansion from the south following continental ice sheet retreat (Demboski and Cook, 2003). Sorex cinereus does not occur in Oregon or California, but S. lyelli has a limited distribution in eastern California including mid- to high-elevation arid habitats of the Sierra Nevada. Although S. lyelli has previously been considered a member of the Southern clade, this first genetic assessment places S. lyelli within the Beringian clade. In the eastern United States, S. longirostris occurs in the southern Appalachian deciduous forests near bogs and marshes. Finally, both S. milleri and S. emarginatus form isolated populations in montane forests in central eastern and central western Mexico, respectively (Esteva et al., 2010)."

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References

Demboski JR, Cook JA. 2003. Phylogenetic diversification within the Sorex cinereus group (Soricidae). Journal of Mammalogy 84(1): 144-158.

Esteva M, Cervantes FA, Brant SV, Cook JA. 2010. Molecular phylogeny of longtailed shrews (genus Sorex) from Mexico and Guatemala. Zootaxa 2615: 47–65.

Hope AG, Speer KA, Demboski JR, Talbot SL, Cook JA. 2012. A climate for speciation: rapid spatial diversification within the Sorex cinereus complex of shrews. Molecular Phylogenetics and Evolution 64(3): 671-684.

Hutterer R., 2005. Order Soricomorpha. In: Wilson, D.E., Reeder, D.M. (Eds.), Mammal Species of the World: A Taxonomic and Geographic Reference, third ed. The Johns Hopkins Univ. Press, pp. 220–311.

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