Use by bats of old-growth redwood hollows on the north coast of California
Gellman ST and Zielinski WJ. 1996. Use by bats of old-growth redwood hollows on the north coast of California. Journal of Mammalogy. 77(1):255-265
Guano traps inside old-growth redwoods showed use by bats in this study at Del Norte Coast Redwoods State Park. The authors investigated bat use of hollowed trees on both sides of Highway 101; during most of the 18 monthly sample periods (spring 1992-fall 1993), bats used all 26 of the study trees. This use, and the amounts of guano found, indicate that the trees were either day roosts for a small number of bats or temporary night roosts. Weight of guano was more related to the volume of the hollow rather than to tree diameter; the paper points out the importance of old-growth areas containing enough trees with basal hollows to offer adequate roost area for bats. The study found that the preferred trees had larger volumes of hollow space, greater diameters, and were nearer to water. The document includes charts of guano data and bat preferences regarding tree characteristics.
- Type
- Journal Article
- Authors
- Gellman, Steven; Zielinski, William
- Units
- REDW
- Keywords
- Animal Studies, Bats (Chiroptera), Del Norte Coast Redwoods State Park, Guano, Habitats, Old Growth Forest, Presence (Biodiversity), Redwood, roosting, Roosts, Taxa Links To References, tree cavity, Trees