globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13555
论文题名:
Emerging climate-driven disturbance processes: widespread mortality associated with snow-to-rain transitions across 10° of latitude and half the range of a climate-threatened conifer
作者: Buma B.; Hennon P.E.; Harrington C.A.; Popkin J.R.; Krapek J.; Lamb M.S.; Oakes L.E.; Saunders S.; Zeglen S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
卷: 23, 期:7
起始页码: 2903
结束页码: 2914
语种: 英语
英文关键词: Alaska yellow-cedar ; biogeography ; Callitropsis nootkatensis ; climate change ; climate refugia ; emergent disturbance ; forest disturbance ; precipitation ; protected area ; snow
Scopus关键词: Callitropsis nootkatensis ; Coniferophyta
英文摘要: Climate change is causing rapid changes to forest disturbance regimes worldwide. While the consequences of climate change for existing disturbance processes, like fires, are relatively well studied, emerging drivers of disturbance such as snow loss and subsequent mortality are much less documented. As the climate warms, a transition from winter snow to rain in high latitudes will cause significant changes in environmental conditions such as soil temperatures, historically buffered by snow cover. The Pacific coast of North America is an excellent test case, as mean winter temperatures are currently at the snow–rain threshold and have been warming for approximately 100 years post-Little Ice Age. Increased mortality in a widespread tree species in the region has been linked to warmer winters and snow loss. Here, we present the first high-resolution range map of this climate-sensitive species, Callitropsis nootkatensis (yellow-cedar), and document the magnitude and location of observed mortality across Canada and the United States. Snow cover loss related mortality spans approximately 10° latitude (half the native range of the species) and 7% of the overall species range and appears linked to this snow–rain transition across its range. Mortality is commonly >70% of basal area in affected areas, and more common where mean winter temperatures is at or above the snow–rain threshold (>0 °C mean winter temperature). Approximately 50% of areas with a currently suitable climate for the species (<−2 °C) are expected to warm beyond that threshold by the late 21st century. Regardless of climate change scenario, little of the range which is expected to remain suitable in the future (e.g., a climatic refugia) is in currently protected landscapes (<1–9%). These results are the first documentation of this type of emerging climate disturbance and highlight the difficulties of anticipating novel disturbance processes when planning for conservation and management. © 2016 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60907
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Natural Sciences, University of Alaska Southeast, 11120 Glacier Highway, Juneau, AK, United States; USDA Forest Service, PNW Research Station, 11175 Auke Lake Way, Juneau, AK, United States; USDA Forest Service, PNW Research Station, 3625 93rd Ave SW, Olympia, WA, United States; Little Earth GIS Consulting Inc, PO Box 354, Lantzville, BC, Canada; School of Natural Resources and Extension, University of Alaska Fairbanks, Fairbanks, AK, United States; USDA Forest Service, Alaska Region, Juneau, AK, United States; Stanford University, Stanford, CA, United States; Coast Area Research, BC Ministry of Forests, Lands, and Natural Resource Operations, Nanaimo, BC, Canada; West Coast Region, British Columbia Ministry of Forests, Lands and Natural Resource Operations, Nanaimo, BC, Canada

Recommended Citation:
Buma B.,Hennon P.E.,Harrington C.A.,et al. Emerging climate-driven disturbance processes: widespread mortality associated with snow-to-rain transitions across 10° of latitude and half the range of a climate-threatened conifer[J]. Global Change Biology,2017-01-01,23(7)
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