A Study of Bat Populations at Los Alamos National Laboratory and Bandelier National Monument, Jemez Mountains, New Mexico: FY95-97 report to: Los Alamos National Laboratory and Bandelier National Monument
Bogan MA, O'Shea TJ, Cryan PM, Ditto AM, Schaedla WH, Valdez EW, Castle KT, Ellison L. 1997. A Study of Bat Populations at Los Alamos National Laboratory and Bandelier National Monument, Jemez Mountains, New Mexico: FY95-97 report to: Los Alamos National Laboratory and Bandelier National Monument. University of New Mexico. Albuquerque, NM
Although previous work on bats has been conducted in the Jemez Mountians of New Mexico, the status and trends of bat populations there are not well known. In 1995, a three-year study was initiated to assess the current status of bat species of concern, elucidate distribution and relative abundance, and obtain information on roosting sites of bats. We captured and released 1532 bats of 15 species (Myotis cali/omicus, M. ciliolabrum, M. evotis, M. thysanodes, M. volam, M yumanensis, Lasiurus cinereus, Lasionycteris noctivagans, Pipistrellus hesperus, Eptesicus jIlSCUS, Euderma maculatum, Corynorhimls townsend ii, Antrozous pallidus, Tadarida brasiliensis, and Nyctinomops macrotis) and followed 32 bats of eight species (M. evotis, M. thysanodes, M. volans, E. jIlSCUS, E. maculatum, C. townsendii, A. pallidus, and N. macrotis) to 51 active diurnal roosts. The most abundant species were: L. noctivagans, E. juscus, L. cinereu&, M. evotis, M. volam, and M. ciliolabrum. Most of these species are typical inhabitants of ponderosa pine-mixed coniferous forests. The abundance of L. noctivagans is partly a function of their migration through the area. Captured males outnumbered females for many species; only 5 species (M. cali/omicus, M. thysanodes, M. yumanensis, E. juscus and C. townsendii) were captured in about equal numbers of both sexes. Exact reasons for the observed distribution of sexes is unknown but climate, elevational influences, and sites chosen for netting may be involved. We netted eight bat species of concern in the Jemez. We frequestly captured four of these species (M. ciliolabrum, M. evotis, M. thysanodes, and M. volans). We captured smaller numbers of the other four species of concern, for a variety of reasons, but we found or know reliably of moderate- to large-sized roosting aggregations of three of these: M. yumanensis, Euderma maculatum, and Nyctinomops macrotis. We captured only seven individuals of C. townsendii, lending credence to the possibility that this species is of concern in the area.
- Type
- Published Report
- Authors
- Bogan, Michael; O'Shea, Thomas; Cryan, Paul; Ditto, Amy; Schaedla, William; Valdez, Ernest; Castle, Kevin; Ellison, Laura
- Date of Issue
- 1997-12-02
- Publisher
- University of New Mexico
- Units
- BAND
- Keywords
- Animal Studies, Bats (Chiroptera), Checklist, Mammals, Monitoring, Townsend's Big-eared Bat (Corynorhinus townsendii)