Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
Conservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest Serv Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)vice Region 6 and U.S.D.I. Bureau of Land ManagementAuthorsDAVID R. CLAYTON is a wildlife biologist. USDA Forest Service. Rogue River-Siskiyou National Forest, Medford, OR 97501DEANNA H. OLSON is a research ecologist, USDA Forest Service, Pacific Northwest Research Station, Corvallis, OR 97331Discla Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)imerThis Conservation Assessment was prepared to compile the published and unpublished Information on the Oregon slender salamander (Batrachoseps wrigConservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
hti). Although the best scientific information available was used and subject experts were consulted in preparation of this document, it is expected tConservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest Serv Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)rvation Assessment, please contact the Interagency Conservation Planning Coordinator for Region 6 Forest Service. BLM OR/WA in Portland. Oregon, via the Interagency special Status and Sensitive Species Program website.1Executive SummaryThe Oregon Slender Salamander Conservation Assessment Version 1. Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)0 was updated in January 2009 (Version 2.0) to incorporate Appendices 2, 3, and 4, and to integrate those findings into the main document.Species: OreConservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
gon Slender Salamander (Batrachoseps wrighti)Thxonomic Group: AmphibianOther Management Status: U.S.D.A. Forest Service, Region 6 - Sensitive; Ư.S.D.IConservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest Serv Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)01; The Oregon Natural Heritage Information Center ranks this species as Globally imperiled (G2G3), Oregon State imperiled (S2S3) and it is List 1 (threatened with extinction or presumed to be extinct throughout their entire range). Management of the species follows Forest Service 2670 Manual policy Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti) and BLM 6840 Manual direction.Range: The species is currently known from the north Oregon Cascade Range and foothills, occurring west of the crest frConservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
om the Columbia River to Highway 58, and occurring east of the crest from the Columbia River to the Warm Springs Indian Reservation. It occurs across Conservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest Serv Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)und 1,700 meters at the southern end of its range on the west side of the Cascade Range crest. There are 740 site records, which collapse to 407 sites when locations within 200 m of each other are combined.Specific Habitat: This terrestrial salamander is highly associated with down wood in forests. Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)In the western Cascades, four habitat characteristics have a significant positive association with Oregon slender salamanders: canopy closure, west anConservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
d east aspects, decayed logs in the 50 to 75 cm (20 to 30 in) diameter class, and snags. While it may be found in all serai stages when down wood is pConservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest Serv Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti) not well known; the species uses a variety of ground cover objects ranging from sloughed bark to down logs, and occur in younger and older forests.Threats: Land-use activities that affect substrate, ground cover including down wood, forest condition, or microhabitat and microclimate regimes may imp Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)act individuals or populations at occupied sites (site). The primary potential threat to these salamanders and their habitat is short rotation clearcuConservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
t timber harvest, which removes canopy closure, disturbs substrates, and can alter microhabitat refuges and microclimates. In particular, where there Conservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest Serv Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)is uncertainty about the effect on these salamanders of partial harvest, or regeneration harvest with green tree and down wood retention.Management Considerations: Considerations for maintaining local populations include maintaining undisturbed cool, moist surface and subsurface refuges. The timing Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)of activities to outside of the season when animals are surface active is also a consideration for this species’ management: some habitat disturbing aConservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
ctivities that could harm the species at those times when the animals are surface active (i.e., winter/spring) may be relatively benign at other limesConservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest Serv Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)populations are recognized within the range ofthe species) are considerations for determining sites to manage. At stand scales, a mosaic of riparian reserves, upslope patch reserves and partial harvest areas may contribute to the retention of habitat for this species.Inventory, Monitoring, and Resea Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)rch Opportunities: Information gaps identified by lhe interagency Oregon slender salamander work group as medium to high priority include:o field valiConservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
dation of the habitat modeldelinealion of the southern distribution of the species on both the cast and west side of the Cascade Range,0 distribution Conservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest Serv Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)ies such as density management and fuels reduction treatments,o the effect of lire on this species and habitat associations east of the Cascades,o how much coarse woody debris should be recruited to retain salamanders at a site,o distribution of the two discrete genetic populations on federal land a Conservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)llocations,o movement abilities of the salamander.Many of these gaps can be answered by using various techniques of inventory, monitoring and researchConservation Assessment for the Oregon Slender Salamander (Batrachoseps wrighti)
. Basic inventory techniques may assist in locating new populations or to monitor known sites over the long term to determine population trends.3TABLEConservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest ServConservation Assessment for theOregon Slender Salamander(Batrachoseps wrighti)Version 2.039814David R. Clayton and Deanna H. OlsonU.S.D.A. Forest ServGọi ngay
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