Overview

Distribution

Range Description

The taiga shrew's range extends from Fennoscandia in the west, through northern and central Russia, north Mongolia and northern China, and northern Kazakhstan, to the Pacific coast and Sakhalin island. In Europe, it is more or less continuously distributed from Finland to northern Russia and northern Belarus (Corbet 1978, Sulkava 1999). Populations in Norway and Sweden may be isolated; the species was not detected in Fennoscandia until as late as 1949 (Sulkava 1999). In Mongolia, occurs along the Sögnögör River in south-western Hentii Mountain Range, and in Züünbürkh in eastern Hentii Mountain Range (Shvetsov et al., 1980); also occurs in parts of Mongol Daguur Steppe. In China, distribution is restricted to the northeastern regions of Heilongjiang and E Nei Mongol.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Inhabits forest, taiga, river valleys and forest-steppe. Occasionally found in mountain steppe and riparian zones. In Europe it is found along small brooks where there is dense vegetation (e.g. ferns) within mature spruce and mixed boreal forests. It is also sometimes found in scrub and fallow fields, so long as there is damp, dense vegetation at ground level and a deep soil layer (Sulkava 1999). It feeds mainly on invertebrates, particularly earthworms and dipteran larvae, although plant material is very occasionally taken (Sulkava 1990).

Systems
  • Terrestrial
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Sorex isodon

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 19
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2008

Assessor/s
Amori, G., Henttonen, H., Stubbe, M., Samiya, R., Ariunbold, J., Buuveibaatar, V., Dorjderem, S., Monkhzul, Ts., Otgonbaatar, M., Tsogbadrakh, M. & Gankhuyag, P.

Reviewer/s
Amori, G. (Small Nonvolant Mammal Red List Authority) & Temple, H. (Global Mammal Assessment Team)

Contributor/s

Justification
Globally this species has a wide range, but it is a habitat specialist and its distribution is patchy. Habitat loss and degradation is ongoing but is not a serious threat to the species at present. It is consequently assessed as Least Concern.

History
  • 1996
    Lower Risk/least concern
    (Baillie and Groombridge 1996)
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Population

Population
In Europe it is rare and local. In north-west Europe and north-western Siberia, captures of this species generally form less than 1% of all Sorex captures with snap traps and pitfall traps (Sulkava 1999). It is a patchily distributed species and little is known about population trends. Little data exists on populations of this species in Mongolia, but it is not thought to be widespread (R. Samiya pers. comm.).

Population Trend
Unknown
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Threats

Major Threats
Preferred habitats are being altered by forestry and drainage (Sulkava 1999). Globally this is not considered to be a serious threat at present.
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Management

Conservation Actions

Conservation Actions
It is listed on Appendix III of the Bern Convention, and occurs in many protected areas. Population trends and habitat status require monitoring in the western European part of its range.
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Wikipedia

Taiga shrew

The taiga shrew (Sorex isodon), also known as the even-toothed shrew can achieve a body length of about 67 millimeters, with a tail of about 43 millimeters. This shrew is very similar to the long-clawed shrew. This species inhabits forested mountain valleys, and is found across northern Eurasia. It ranges from the Baltic Sea area through the Lake Baikal region of Siberia into the Russian Far East and along the Baekdudaegan mountains of the Korean Peninsula.[3]

See also

References

  1. ^ Hutterer, R. (2005). In Wilson, D. E.; Reeder, D. M. Mammal Species of the World (3rd ed.). Johns Hopkins University Press. pp. 289–290. ISBN 978-0-8018-8221-0. OCLC 62265494. 
  2. ^ Amori, G., Henttonen, H., Stubbe, M., Samiya, R., Ariunbold, J., Buuveibaatar, V., Dorjderem, S., Monkhzul, Ts., Otgonbaatar, M., Tsogbadrakh, M. & Gankhuyag, P. (2008). "Sorex isodon". IUCN Red List of Threatened Species. Version 2010.4. International Union for Conservation of Nature. Retrieved 30 March 2011. 
  3. ^ Won, Byeong-o (원병오) (2004). 한국의 포유동물 (Hangugui poyudongmul, Mammals of Korea). Seoul: Dongbang Media. ISBN 89-8457-310-8. 
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