DOI: 10.1111/gcb.13584
论文题名: Tree demography suggests multiple directions and drivers for species range shifts in mountains of Northeastern United States
作者: Wason J.W. ; Dovciak M.
刊名: Global Change Biology
出版年: 2017
卷: 23, 期: 8 起始页码: 3335
结束页码: 3347
语种: 英语
英文关键词: climate change
; forest soils
; land-use legacy
; northern hardwood forest
; spruce-fir forest
; tree distributions
Scopus关键词: Abies
; Abies balsamea
; Acer pensylvanicum
; Acer saccharum
; Betula alleghaniensis
; Fagus grandifolia
; Picea
; Picea rubens
英文摘要: Climate change is expected to lead to upslope shifts in tree species distributions, but the evidence is mixed partly due to land-use effects and individualistic species responses to climate. We examined how individual tree species demography varies along elevational climatic gradients across four states in the northeastern United States to determine whether species elevational distributions and their potential upslope (or downslope) shifts were controlled by climate, land-use legacies (past logging), or soils. We characterized tree demography, microclimate, land-use legacies, and soils at 83 sites stratified by elevation (~500 to ~1200 m above sea level) across 12 mountains containing the transition from northern hardwood to spruce-fir forests. We modeled elevational distributions of tree species saplings and adults using logistic regression to test whether sapling distributions suggest ongoing species range expansion upslope (or contraction downslope) relative to adults, and we used linear mixed models to determine the extent to which climate, land use, and soil variables explain these distributions. Tree demography varied with elevation by species, suggesting a potential upslope shift only for American beech, downslope shifts for red spruce (more so in cool regions) and sugar maple, and no change with elevation for balsam fir. While soils had relatively minor effects, climate was the dominant predictor for most species and more so for saplings than adults of red spruce, sugar maple, yellow birch, cordate birch, and striped maple. On the other hand, logging legacies were positively associated with American beech, sugar maple, and yellow birch, and negatively with red spruce and balsam fir – generally more so for adults than saplings. All species exhibited individualistic rather than synchronous demographic responses to climate and land use, and the return of red spruce to lower elevations where past logging originally benefited northern hardwood species indicates that land use may mask species range shifts caused by changing climate. © 2016 John Wiley & Sons Ltd 资助项目: Wason, J.W.
; Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, United States
; 电子邮件: jaywason@gmail.com
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60878
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY, United States; School of Forestry and Environmental Studies, Yale University, 370 Prospect St., New Haven, CT, United States
Recommended Citation:
Wason J.W.,Dovciak M.. Tree demography suggests multiple directions and drivers for species range shifts in mountains of Northeastern United States[J]. Global Change Biology,2017-01-01,23(8)