DOI: 10.1016/j.foreco.2013.06.002
Scopus记录号: 2-s2.0-84880319856
论文题名: Susceptibility of Salix monticola to Cytospora canker under increased temperatures and decreased water levels
作者: Kaczynski K.M. ; Cooper D.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 305 起始页码: 223
结束页码: 228
语种: 英语
英文关键词: Cytospora chrysosperma
; Drought stress
; Riparian
; Rocky Mountains
; Salix monticola
; Temperature stress
Scopus关键词: Cytospora chrysosperma
; Drought stress
; Riparian
; Rocky Mountains
; Salix monticola
; Temperature stress
; Atmospheric temperature
; Biomass
; Landforms
; Population statistics
; Water levels
; Climate change
; air temperature
; biomass
; biotic factor
; climate effect
; disease treatment
; fungus
; infectious disease
; population decline
; temperature effect
; tree
; ungulate
; Colorado
; Rocky Mountain National Park
; Rocky Mountains
; United States
英文摘要: In the past two decades, a large-scale decline of tall iparian willow populations has occurred in parts of the Rocky Mountains, USA. Previous research has demonstrated that the biotic factors ungulate browsing and Valsa sordida (Cytospora chrysosperma), a fungal infection, are drivers of the decline. Increased air temperatures and decreased water levels as predicted by climate models may interact with biotic factors to produce further decline. To examine the effects of potential climate change on willows, we implemented a factorial field experiment in Rocky Mountain National Park, Colorado. We measured the effects of high and low water levels, increased air temperature, and fungal infection on above and belowground willow biomass. There was no significant difference in aboveground biomass under any treatment. Warmed treatments resulted in significantly greater belowground biomass. Inoculated stems were highly susceptible to potentially lethal fungal cankers under all treatments. This suggests that willows presently are highly sensitive to Cytospora canker and future climate changes may have little additional effect on their susceptibility to fungal infection. Cytospora canker can lead to stem death and resource managers should work to reduce mechanisms of stem wounding, such as ungulate browsing, that may allow entrance for fungal infection and lead to further riparian willow dieback. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66438
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest and Rangeland Stewardship, Colorado State University, United States
Recommended Citation:
Kaczynski K.M.,Cooper D.J.. Susceptibility of Salix monticola to Cytospora canker under increased temperatures and decreased water levels[J]. Forest Ecology and Management,2013-01-01,305