DOI: 10.1016/j.foreco.2016.10.039
Scopus记录号: 2-s2.0-84994054757
论文题名: Asynchronous recruitment dynamics of snowshoe hares and white spruce in a boreal forest
作者: Olnes J. ; Kielland K.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 384 起始页码: 83
结束页码: 91
语种: 英语
英文关键词: Alaska
; Boreal forest
; Herbivory
; Snowshoe hare
; Succession
; White spruce
Scopus关键词: Banks (bodies of water)
; Floods
; Alaska
; Boreal forests
; Herbivory
; Snowshoe hare
; Succession
; White spruce
; Forestry
; abundance
; boreal forest
; browsing
; community composition
; coniferous tree
; ecosystem function
; ecosystem structure
; growing season
; herbivore
; lagomorph
; plant community
; plant-herbivore interaction
; recruitment (population dynamics)
; seedling
; succession
; Alaska
; Tanana River
; United States
; Coniferophyta
; Lepus americanus
; Picea
; Picea glauca
英文摘要: Herbivores have the capacity to modify plant community composition and ecosystem structure and function via browsing. For example, moose and snowshoe hare facilitate succession in Alaska's boreal forest by preferentially browsing early successional species over late successional conifers. Snowshoe hares also eat conifers, including white spruce, and this browsing may affect the pattern of spruce establishment over time. We measured over 800 spruce at 18 locations along the Tanana River floodplain in interior Alaska, USA and demonstrated that the proportion of spruce browsed annually positively correlates with annual hare abundance. Nearly all seedlings sampled had been browsed. Further, we modeled the pattern of spruce establishment over the last 40 years and found that hare abundance, growing season temperature, early season snow depth, and flooding explain the majority of this pattern. This model demonstrated that less spruce established during periods of high hare abundance than during periods of low hare abundance. The extensive browsing of white spruce that occurs during periods of high hare abundance may further compound the negative effects of climate warming on spruce recruitment in these floodplain forests. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64602
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK, United States; Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States
Recommended Citation:
Olnes J.,Kielland K.. Asynchronous recruitment dynamics of snowshoe hares and white spruce in a boreal forest[J]. Forest Ecology and Management,2017-01-01,384