DOI: 10.1016/j.foreco.2013.12.024
Scopus记录号: 2-s2.0-84891798817
论文题名: Bark beetles and dwarf mistletoe interact to alter downed woody material, canopy structure, and stand characteristics in northern Colorado ponderosa pine
作者: Klutsch J.G. ; Beam R.D. ; Jacobi W.R. ; Negrón J.F.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 315 起始页码: 63
结束页码: 71
语种: 英语
英文关键词: Bark beetles
; Disturbance ecology
; Dwarf mistletoe
; Endemic
; Fuel
; Mountain pine beetle
Scopus关键词: Bark beetle
; Disturbance ecology
; Dwarf mistletoe
; Endemic
; Mountain pine beetle
; Fueling
; Fuels
; Forestry
; basal area
; beetle
; biomass
; canopy
; coarse woody debris
; coniferous tree
; disturbance
; endemic species
; forest dynamics
; fuelwood
; mortality
; parasitic plant
; population outbreak
; species diversity
; Ecology
; Forestry
; Fuels
; Insects
; Colorado
; United States
英文摘要: Due to the recent outbreaks of bark beetles in western U.S.A., research has focused on the effects of tree mortality on forest conditions, such as fuel complexes and stand structure. However, most studies have addressed outbreak populations of bark beetles only and there is a lack of information on the effect of multiple endemic, low level populations of biotic disturbance agents that could influence forest dynamics, fuel heterogeneity, and species composition. Downed woody material, fuel parameters and stand characteristics were assessed in areas of ponderosa pine (Pinus ponderosa) infested with southwestern dwarf mistletoe (Arceuthobium vaginatum subsp. cryptopodum), and in areas with endemic populations of mountain pine beetle (Dendroctonus ponderosae) and Ips spp. (Coleoptera: Curculionidae, Scolytinae) in northern Colorado. Both endemic bark beetles and dwarf mistletoe were associated with more dense stands than uninfested plots and resulted in reducing basal area of live trees. The amount of downed woody material was positively related to time since tree mortality and basal area of bark beetle-attacked trees. There was an increase of up to 10% for fine and coarse downed woody material for every increase of 1m2ha-1 basal area of mortality from mountain pine beetle that was 4-15years after death. The average intensity of dwarf mistletoe infections on live trees was positively related to amount of 10-h downed woody material and negatively associated with percent live ponderosa pine crown. Fuel bed and canopy characteristics were dependent on the presence of both dwarf mistletoe and mountain pine beetle-caused mortality. Together these endemic biotic disturbances have an effect on downed woody material biomass accumulation, fuel arrangements, stand densities and species composition. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66105
Appears in Collections: 影响、适应和脆弱性
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作者单位: Colorado State University, Department of Bioagricultural Sciences and Pest Management, Fort Collins, CO 80523-1177, United States; USDA Forest Service, Rocky Mountain Research Station, 240 West Prospect, Fort Collins, CO 80526-2096, United States; University of Alberta, Department of Renewable Resources, 442 Earth Science Building, Edmonton, AB T6G 2E3, Canada
Recommended Citation:
Klutsch J.G.,Beam R.D.,Jacobi W.R.,et al. Bark beetles and dwarf mistletoe interact to alter downed woody material, canopy structure, and stand characteristics in northern Colorado ponderosa pine[J]. Forest Ecology and Management,2014-01-01,315