Myotis Thysanodes

Myotis Thysanodes

SPECIES: Scientific [common] Myotis thysanodes [fringed myotis] Forest: Salmon–Challis National Forest Forest Reviewer: Rema Sadak (Regional Wildlife Ecologist) Date of Review: 12/1/2017 Forest concurrence (or Yes recommendation if new) for inclusion of species on list of potential SCC: (Enter Yes or No) FOREST REVIEW RESULTS: 1. The Forest concurs or recommends the species for inclusion on the list of potential SCC: Yes_X__ No___ 2. Rationale for not concurring is based on (check all that apply): Species is not native to the plan area _______ Species is not known to occur in the plan area _______ Species persistence in the plan area is not of substantial concern _______ FOREST REVIEW INFORMATION: 1. Is the Species Native to the Plan Area? Yes_X_ No___ If no, provide explanation and stop assessment. 2. Is the Species Known to Occur within the Planning Area? Yes_X_ No___ If no, stop assessment. Table 1. All Known Occurrences, Years, and Frequency within the Planning Area Year Number of Location of Observations (USFS Source of Information Observed Individuals District, Town, River, Road Intersection, HUC, etc.) 1997 – 2002 4 North Fork Ranger District Idaho Fish and Wildlife Information System (January 2017); USFS Natural Resources Information System Wildlife (April 2017) 2009 16 Salmon–Cobalt Ranger District Idaho Fish and Wildlife Information System (January 2017) a. Are all Species Occurrences Only Accidental or Transient? Yes___ No_X_ If yes, document source for determination and stop assessment. b. For species with known occurrences on the Forest since 1990, based on the number of observations and/or year of last observation, can the species be presumed to be established or becoming established in the plan area? Yes_X_ No___ If no, provide explanation and stop assessment c. For species with known occurrences on the Forest predating 1990, does the weight of evidence suggest the species still occurs in the plan area? Yes___ No___ Provide explanation for determination – NA No observations prior to 1990 If determination is no, stop assessment d. Map 1, Fringed myotis range in Idaho (IDFG 2017a) IDFG (Idaho Department of Fish and Game). 2017a. Fringed myotis (Myotis thysanodes). Internet website: https://idfg.idaho.gov/species/taxa/15598. Accessed on September 29, 2017. e. Map 2, Fringed myotis range in Montana (MNHP and MFWP 2017) MNHP and MFWP (Montana Natural Heritage Program and Montana Fish, Wildlife, and Parks). 2017. Montana Field Guides – Fringed Myotis – Myotis thysanodes. Internet website: http://fieldguide.mt.gov/speciesDetail.aspx?elcode=AMACC01090. Accessed on September 29, 2017. f. Map 3, Fringed myotis occurrences on the Salmon–Challis National Forest [Idaho Fish and Wildlife Information Systems (January 2017); USFS Natural Resources Information System Wildlife (April 2017)]. 3. Is There Substantial Concern for the Species’ Capability to persist Over the Long-term in the Plan Area Based on Best Available Scientific Information? Table 2. Status summary based on existing conservation assessments Entity Status/Rank (all at species level except NatureServe Global Rank) NatureServe G4— Not rare and apparently secure, but with cause for long-term concern (usually more than 100 occurrences) Global Rank NatureServe S3— Vulnerable in the state of Idaho (Species is at moderate risk of extinction or elimination due to restricted range, few State Rank populations or occurrences, steep declines, severe threats, or other factors) Idaho State IDAPA— Protected nongame List Status SGCN—Not listed USDA Forest Region 4— Not listed Service Region 1— Sensitive USDI FWS Not listed Other BLM— Not listed Western Bat Working Group Medium Priority— indicates a level of concern, that should warrant closer evaluation, more research, and conservation actions of both the species and possible threats (Miller et al. 2007). BLM (United States Department of the Interior, Bureau of Land Management). 2015. Idaho BLM Special Status Species List Update. Instruction Memorandum ID-IM-2015-009. Internet website: https://www.blm.gov/policy/id-im-2015-009. Accessed on October 4, 2017. Miller, K., E.G. Harris, and C.E. Harris. 2007. Idaho Bat Conservation Plan. Version 1.0. Idaho Bat Working Group. Boise, ID. 143pp. Western Bat Working Group. 2017. Idaho Bat Conservation Plan. Table 3. Status summary based on best available scientific information. Species (Scientific and Common Name): Myotis thysanodes [fringed myotis] Criteria Rank Rationale Literature Citations 1 B2 The fringed myotis appears to be minimally distributed on the Forest NatureServe. 2017. NatureServe Distribution on based on occurrence data, though there have been no systematic surveys Explorer: An online encyclopedia of Salmon–Challis for this species within the SCNF. life [web application]. Version 7.1. National Forest Throughout its range, the species is closely associated with oak and NatureServe, Arlington, Virginia. pinyon woodlands, which do not occur on the SCNF. It may also occur in Internet website: various other habitats from desert-scrub to fir-pine associations, which http://explorer.natureserve.org. are available, and roost sites include caves, mines, and buildings. Accessed on October 4, 2017. This species is known to have a patchy distribution across its range (NatureServe 2017). Due to the unavailability of oak and pinyon woodlands on the Forest, distribution is likely equally patchy on the Salmon–Challis National Forest (SCNF). On the SCNF, desert-scrub and fir- pine habitats are naturally distributed as a mosaic, with some opportunity for dispersal between suitable habitats. Confidence in Rank: High, Medium, or Low 2 C Fringed myotis populations are generally patchy in distribution among Barbour, R. W., and W. H. Davis. Distribution in core range areas as well as in peripheral populations. Although their 1969. Bats of America. The surrounding range is large, they are rare and patchily distributed within that range University of Kentucky Press, geographic area (Keinath 2004). Global range includes western North America from Lexington, Kentucky. 286 pp. southcentral British Columbia south through the western United States Keinath, D. A. 2004. Fringed myotis to Veracruz and Chiapas in southern Mexico; west to the Pacific coast, (Myotis thysanodes): a technical east to the Black Hills region of Wyoming-South Dakota-Nebraska, and conservation assessment. [Online]. western Texas (O'Farrell and Studier 1980; Nagorsen and Brigham 1993; USDA Forest Service, Rocky Simmons, in Wilson and Reeder 2005). Elevational range extends from Mountain Region. Available: sea level along the Pacific coast to around 9,350 feet in New Mexico http://www.fs.fed.us/r2/projects/s (Barbour and Davis 1969). cp/assessments/fringedmyotis.pdf. Nagorsen, D.W., and R.M. Brigham. Species (Scientific and Common Name): Myotis thysanodes [fringed myotis] Criteria Rank Rationale Literature Citations This species has a patchy distribution across Idaho, and is found south of 1993. The bats of British Columbia. Coeur D’Alene Lake, across the Palouse to the northern part of Hells Royal B.C. Mus. Handb. Victoria, Canyon National Recreation Area, in the Boise River Valley and the Snake BC. 164pp. River Birds of Prey National Conservation Area. This species has also been Miller, K.E.G. and C.E. Harris. 2007. captured in the FDR National Parkway, between Yellowstone and Grand Idaho Bat Conservation Plan. Idaho Teton National Parks, just east of the Idaho state border (Miller and Department of Fish and Game Harris 2007). (IDFG) - Idaho Bat Working Group. The species has a wide distribution outside the SCNF, with generally 14p. disjunct populations. Therefore, this criterion is ranked C. O'Farrell, M.J. and E.H. Studier. Confidence in Rank: High, Medium, or Low 1980. Myotis thysanodes. Mammalian Species 137:1-5. Wilson, D. E., and D. M. Reeder (editors). 2005. Mammal species of the world: a taxonomic and geographic reference. Third edition. The Johns Hopkins University Press, Baltimore. Two volumes. 2,142 pp. Internet website: http://vertebrates.si.edu/msw/ms wcfapp/msw/index.cfm. Accessed on Oct 4, 2017 3 B The fringed myotis is apparently migratory in Arizona and New Mexico, Arroyo-Cabrales, J. and P.C. de Dispersal though little is known about migration distances and destinations nor Grammont. 2017. The IUCN Red Capability whether all populations do so (O'Farrell and Studier 1980). It is thought List of Threatened Species: to be a slow flyer (Arroyo-Cabrales and de Grammont 2017). e.T14206A22063246. Very few data are available on home range requirements for http://www.iucnredlist.org insectivorous bats and none for the fringed myotis in particular. Accessed on 12/1/2017. Species (Scientific and Common Name): Myotis thysanodes [fringed myotis] Criteria Rank Rationale Literature Citations The nightly activity areas for individual M. evotis (similar in form and Miner, K., P. Brown, B. Berry, C. function to M. thysanodes) were reported as approximately 94 acres Brown-Buescher, A. Kisner, S. (Waldien and Hayes 2001). This appears to be a reasonable estimate of Remington, D. Simons, D. Stokes, J. home range size for the fringed myotis. However, fringed myotis have Stephenson, and L. Underwood. been shown to travel farther from roosts than M. evotis in similar habitat 1996. Habitat use by Myotis evotis (Miner et al. 1996). and M. thysanodes in a southern Thus, being a slow flyer it is likely that migration distances are moderate. California pine-oak woodland. Bat In addition, given the species is a habitat generalist dispersal is likely not Research News 37:141. limited by habitat and we assign a rank of B. Confidence is moderated by O'Farrell, M.J. and E.H. Studier. limited by the paucity of information on the species’ seasonal 1980. Myotis thysanodes. movements. Mammalian Species 137:1-5. Waldien, D.L. and J.P. Hayes. 2001. Activity areas of female long-eared myotis in coniferous forests in Confidence in Rank: High, Medium, or Low western Oregon. Northwest Science 75:307-314. 4 A-B The fringed myotis is uncommon or rare through the bulk of its range Ammerman, L.

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