by Oregon Dept. of Fish and Wildlife, Nongame Wildlife Program in Portland, Or .
Written in English
Bibliography: p. 13.
|Statement||Stephen P. Cross.|
|Series||Technical report / Oregon Department of Fish and Wildlife, Nongame Wildlife Program -- 83-2-02A., Technical report (Oregon. Nongame Wildlife Program) -- 83-2-02A.|
|Contributions||Oregon. Nongame Wildlife Program.|
|The Physical Object|
|Pagination||i, 13 p. ;|
|Number of Pages||13|
48, bat passes in riparian areas during 8, hours on detector-nights and assessed bat detection probabilities and vegetative clutter at 71 points. Macrohabitat factors were important to male red bats and pipistrelles whereas female northern long-eared bats displayed mainly microhabitat roost-site preferences. Our results indicated thatCited by: 9. roost site selection factor for Virginia big-eared bats (C. t. virginianus). Only recently has much attention been given to bat ecology in managed forests, with the bulk of this focusing on the Pacific Northwest and Canada. Campbell et al. () documented roost use by silver-haired bats (Lasionycteris noctivagans) in. Information on roosting requirements and responses to forest management is integral to effectively conserve and manage bat populations. Tree hollows are especially important for roosting bats given the long time taken for hollows to form. We used radiotelemetry to compare roost site selection in two species, Vespadelus regulus and Nyctophilus gouldi, in logged jarrah forests of south-western Cited by: We used radiotelemetry to examine the roost-site preferences of four species of tree-roosting bats (Eptesicus fuscus, Lasionycteris noctivagans, Myotis evotis, and M. volans) in southern British Columbia, Canada, by radio-tracking bats to their day roosts. We found a total of 21 roost trees: 14 roosts were beneath loose bark, 5 were in cavities excavated by woodpeckers, and 2 were in natural.
Abstract Forest-dwelling bats often use snags and live trees as maternity and bachelor roost sites. These roost sites can be destroyed or altered by natural events (e.g., wildfire) or forest management activities (e.g., prescribed fire, thinning, harvesting). To determine whether artificial roost structures could supplement natural roost sites. Of the records in which a location was given, bats were found in closed roost sites, mainly caves, buildings, and mines and galleries, while just three were found roosting externally. Buy Techniques for locating natural roost sites of bats in the forests of southwestern Oregon (Technical report) by Cross, Stephen P (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : Stephen P Cross. Bats represent the second most diverse group of mammals inhabiting the western slopes of the Cascade Range in southern Washington and the Oregon Coast Range. Bat populations may well be sensitive to changes in forest age, structure, or distribution, but their nocturnal habits and high mobility render the study of the habitat requirements.
Fewer examples of successful roost-box conservation programs for bats exist (but see Flaquer et al. , Whitaker et al. , likely because the roosting requirements of cavity-dwelling bat. About this book. Although bats are often thought of as cave dwellers, many species depend on forests for all or part of the year. Of the 45 species of bats in North America, more than half depend on forests, using the bark of trees, tree cavities, or canopy foliage as roosting sites. We examined factors influencing habitat use of forest-dwelling bats in southwestern British Columbia using ultrasonic detection. We measured activity of three bat foraging guilds in four forest types and three age classes from May to August and Habitat use varied with forest composition and stand age, but not always as we predicted. In Oregon, silver-haired bats, a tree-dwelling species, were discovered to be 10 times more abundant in old-growth forests than in forests that had been logged. The cracks, hollows, and scaling bark of aging or dead trees provide ideal roosts for many species of tree-dwelling bats.. Stands of old-growth forest can be or more years old in the Pacific Northwest.