DOI: 10.1016/j.foreco.2013.06.013
Scopus记录号: 2-s2.0-84899126682
论文题名: Riparian buffers and forest thinning: Effects on headwater vertebrates 10years after thinning
作者: Olson D.H. ; Leirness J.B. ; Cunningham P.G. ; Ashley Steel E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 321 起始页码: 81
结束页码: 93
语种: 英语
英文关键词: Amphibians
; Salamanders
; Small streams
; Stream banks
; Western Oregon
Scopus关键词: Forestry
; Regression analysis
; Surveys
; Amphibians
; Salamanders
; Small streams
; Stream banks
; Western Oregon
; Animals
; habitat restoration
; headwater
; riparian zone
; thinning
; vertebrate
; Animals
; Fishes
; Forestry
; Oregon
; Regression Analysis
; Cascade Range
; Coos Bay
; Mount Hood
; Oregon
; United States
; Amphibia
; Animalia
; Dicamptodon tenebrosus
; Plethodon dunni
; Plethodon vehiculum
; Rhyacotriton
; Salamandroidea
; Vertebrata
英文摘要: We monitored instream vertebrate and stream-bank-dwelling amphibian counts during a stand-scale experiment of the effect of riparian buffer width with upland forest thinning in western Oregon, USA using a before/after/control methodology. We analyzed animal counts along 45 streams at 8 study sites, distributed from the foothills of Mount Hood to Coos Bay, Oregon using data collected pre-treatment and during the first decade post-treatment. We examined the role of four types of stream buffers in explaining the variability in post-treatment animal counts. We built separate linear regression models for stream-bank and instream animals, examining species and species-assemblages of specific interest. Stream-bank models addressed all amphibians, the subset of all terrestrial-breeding amphibians, Plethodon dunni, and Plethodon vehiculum, which were the two most abundant stream-bank species. Instream models were examined for all vertebrates, the subset of all stream-breeding amphibians, Dicamptodon tenebrosus, and Rhyacotriton species. All bank and instream models considered buffer treatment, survey area, stream width, pre-treatment count, and number of days post-treatment as possible explanatory variables. Instream models also considered survey method: hand sampling or electrofishing. Along banks there was support for a negative effect of the two narrowest buffers in the all-species model and the terrestrial-breeding amphibian assemblage model, and for an apparent negative effect of the narrowest buffer in the P. dunni model. Nevertheless, P. dunni were retained as one of the most common species along stream banks throughout the 10-years of our post-treatment monitoring. Instream, complex interactions among covariates in the model precluded determination of consistently positive or negative effects of buffers on animal counts. This is the first study to test the riparian reserve widths of the US federal Northwest Forest Plan, and it is encouraging that we documented no negative effects of those buffers with upland thinning in headwater drainages. Narrower buffers appeared to pose a risk to stream bank animals. Nevertheless, with our moderate thinning regime and in treatments with all buffer widths, species occurrences were retained through time. The joint buffers-with-thinning treatments appear to be relatively benign and may be reconciled by the designed long-term habitat restoration benefits of the thinning-and-buffer prescriptions. Mixed widths of buffers might be considered to hedge uncertainties, and balance the socioeconomic and ecological benefits of thinning in riparian areas with risks to some species. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65993
Appears in Collections: 影响、适应和脆弱性
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作者单位: Pacific Northwest Research Station, USDA Forest Service, 3200 SW Jefferson Way, Corvallis, OR 97331, United States; Pacific Northwest Research Station, USDA Forest Service, 400 N. 34th St., Suite 201, Seattle, WA 98103, United States; USFWS Division of Migratory Bird Management, 11510 American Holly Dr., Laurel, MD 20708, United States; Department of Entomology and Wildlife Ecology, University of Delaware, Newark, DE 19716, United States
Recommended Citation:
Olson D.H.,Leirness J.B.,Cunningham P.G.,et al. Riparian buffers and forest thinning: Effects on headwater vertebrates 10years after thinning[J]. Forest Ecology and Management,2014-01-01,321