Assessing longevity of ponderosa pine (Pinus ponderosa) snags in relation to age, diameter, wood density and pitch content
نویسندگان
چکیده
منابع مشابه
Snag longevity in relation to wildfire and postfire salvage logging
Snags create nesting, foraging, and roosting habitat for a variety of wildlife species. Removal of snags through postfire salvage logging reduces the densities and size classes of snags remaining after wildfire. We determined important variables associated with annual persistence rates (the probability a snag remains standing from 1 year to the next) of large conifer snags ( 23 cm diameter brea...
متن کاملCharacteristics of snags containing excavated cavities in northern Arizona mixed-conifer and ponderosa pine forests
Snags provide an important resource for a rich assemblage of cavity-nesting birds in the southwestern United States. To expand our knowledge of snag use by cavity-nesting birds in this region, we documented characteristics of snags with and without excavated cavities in mixed-conifer and ponderosa pine (Pinus ponderosa Dougl. ex Laws) forest in north-central Arizona. Snags were sampled in 113 s...
متن کاملForest Management and the Dead Wood Resource in Ponderosa Pine Forests: Effects on Small Mammals
Changes in vegetation structure and composition affect habitat for wildlife. Species such as small mammals that are restricted to small home ranges and are relatively immobile may be most affected since it is more difficult to find and move to new habitat. In the southwestern United States, forest management treatments (thinning and prescribed burning) are being implemented to alter structure a...
متن کاملDay Roosts of Female Fringed Myotis (myotis Thysanodes) in Xeric Forests of the Pacific Northwest
We ?1 radiotracked 25 adult female fringed myotis (Myotis thysanodes) to day roosts in xeric ponderosa pine (Pinus ponderosa) forests on the east side of the Cascade range in Washington and Oregon from 2001 to 2003. Bats were tracked for an average of 9.6 days/bat 6 0.1 SE for a total of 240 roost-days. Bats used 118 roosts, 93% of which were in the crevices of rocks. Pregnant females chose hor...
متن کاملSnag density and composition of snag populations on two National Forests in northern Arizona
Snags (standing dead trees) provide important habitat for forest wildlife, as well as a source of coarse woody debris important in forest succession. Because of their importance, some land-management agencies have standards for snag retention on lands under their jurisdiction (e.g. U.S. Forest Service, British Columbia Ministry of Forestry). Despite these guidelines, however, little information...
متن کامل