DOI: 10.1016/j.foreco.2015.06.007
Scopus记录号: 2-s2.0-84945464086
论文题名: Trophic cascades from wolves to alders in Yellowstone
作者: Ripple W.J. ; Beschta R.L. ; Painter L.E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 354 起始页码: 254
结束页码: 260
语种: 英语
英文关键词: Alder trees
; Elk
; Riparian
; Trophic cascades
; Wolves
; Yellowstone
Scopus关键词: Forestry
; Alder tree
; Elk
; Riparian
; Trophic cascades
; Wolves
; Yellowstones
; Ecology
; age structure
; behavioral response
; canid
; deer
; dicotyledon
; herbivory
; population density
; predator
; recruitment (population dynamics)
; reintroduction
; restoration ecology
; riparian zone
; species conservation
; stream
; tree ring
; trophic cascade
; Rocky Mountains
; United States
; Yellowstone National Park
; Alnus
; Alnus incana
; Alnus incana tenuifolia
; Canidae
; Canis lupus
; Cervus elaphus
; Ungulata
英文摘要: We explored possible interactions among gray wolves (Canis lupus), Rocky Mountain elk (Cervus elaphus), and thinleaf alder (Alnus incana spp. tenuifoli) in northern Yellowstone National Park. We developed an alder age structure based on annual growth rings for plants growing along six streams in areas accessible to ungulates on the northern range. Alder stems (n= 412) along the six streams originated only after wolf reintroduction. By 2013, 80% of the sampled alders along these streams were taller than 2. m, in contrast with a historical pattern of height suppression by ungulate herbivory. This pattern of alder recruitment is consistent with a trophic cascade whereby new alder growth occurred across all study streams within several years after wolf reintroduction. Although declines in elk density since wolf reintroduction likely contributed to the release of alder from herbivory, the immediate onset of new alder recruitment following wolf reintroduction indicates that behavioral responses to predation may also have been an important component in the resulting trophic cascade. These results suggest that predator conservation could play a role in the management and ecological restoration of riparian areas. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65324
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR, United States; Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR, United States
Recommended Citation:
Ripple W.J.,Beschta R.L.,Painter L.E.. Trophic cascades from wolves to alders in Yellowstone[J]. Forest Ecology and Management,2015-01-01,354