DOI: 10.1016/j.foreco.2013.09.028
Scopus记录号: 2-s2.0-84888128510
论文题名: An assessment of fisher (Pekania pennanti) tolerance to forest management intensity on the landscape
作者: Zielinski W.J. ; Thompson C.M. ; Purcell K.L. ; Garner J.D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 821
结束页码: 826
语种: 英语
英文关键词: California
; Fire
; Fisher
; Forestry
; Fuel management
; Pekania pennanti
Scopus关键词: California
; Fisher
; Fuel management
; Geographic location
; Habitat connectivity
; Management activities
; Pekania pennanti
; Southern sierra nevada
; Animals
; Conservation
; Ecosystems
; Fires
; Hardwoods
; Restoration
; Timber
; Forestry
; assessment method
; clearcutting
; disturbance
; ecological modeling
; environmental restoration
; forest management
; forestry
; fuel
; habitat conservation
; habitat type
; landscape
; mustelid
; restoration ecology
; thinning
; timber harvesting
; vegetation structure
; Animals
; Conservation
; Ecosystems
; Fires
; Forestry
; Forests
; Hardwoods
; Restoration
; California
; Sierra Nevada [California]
; United States
; Canis familiaris
; Coniferophyta
英文摘要: Forest restoration intended to reduce the overabundance of dense vegetation can be at odds with wildlife habitat conservation, particularly for species of wildlife that are strongly associated with structurally diverse forests with dense canopies. The fisher (Pekania pennanti), a mesopredator that occurs in mid-elevation forests of the southern Sierra Nevada, is such a species and managers are challenged to address fuel accumulations while at the same time maintaining sufficient habitat. We were interested in whether fishers tolerate the amount of management-related disturbance that fire ecologists predict will be sufficient to reduce the severity and spread rate of fires. To address this question we related an index of relative fisher abundance to data on the amount of each sample area that has been affected by one or more forms of disturbance. These are forms of forest management associated with either restoration activities (e.g., thinning, prescribed fire) or timber harvest (e.g., clear cutting, selection harvest). We used scat detection dogs to determine the relative abundance of scats in each of 15, 14km2 hexagonal sample areas that were sampled twice a year for 4years. These data were used to classify each sample area as either low, moderate or high relative abundance of fishers. We also summarized for each of the sample areas the total number of hectares (including overlap) affected by management activities each year, and generated a 3-year running average. The areas exhibiting the highest use by fishers had an average of 36.7hectares per year affected by ground-disturbing activities. Given that each sample area was 1400hectares, this suggests that fishers consistently occupy - at the highest rate of use - places where an average of 2.6% of the area has been disturbed per year. This translates to an average of 7.4ha of disturbance/year/km2 (47.1acres of disturbance/year/mi2). This is more disturbance than was predicted to be necessary to treat forests to reduce fire spread rate and severity in the southern Sierra Nevada, but less than predicted to be necessary by fire models for other geographic locations. Our work suggests that it may be possible to implement restorative treatments at an extent and rate that achieves fire modeling goals and does not affect occupancy by fishers. Implementation of such an approach, however, should also consider protection of large trees (conifers and hardwoods) used as resting and denning sites and account for the maintenance of habitat connectivity. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66263
Appears in Collections: 影响、适应和脆弱性
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作者单位: USDA Forest Service, Pacific Southwest Research Station, 1700 Bayview Drive, Arcata, CA 95521, United States; USDA Forest Service, Pacific Southwest Research Station, 2081 East Sierra Ave., Fresno, CA 93710, United States
Recommended Citation:
Zielinski W.J.,Thompson C.M.,Purcell K.L.,et al. An assessment of fisher (Pekania pennanti) tolerance to forest management intensity on the landscape[J]. Forest Ecology and Management,2013-01-01,310