气候变化领域集成服务门户(CCPortal): Cross-scale interaction of host tree size and climatic water deficit governs bark beetle-induced tree mortality

CCPortal

DOI	10.1038/s41467-020-20455-y
	Cross-scale interaction of host tree size and climatic water deficit governs bark beetle-induced tree mortality
	Koontz M.J.; Latimer A.M.; Mortenson L.A.; Fettig C.J.; North M.P.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	The recent Californian hot drought (2012–2016) precipitated unprecedented ponderosa pine (Pinus ponderosa) mortality, largely attributable to the western pine beetle (Dendroctonus brevicomis; WPB). Broad-scale climate conditions can directly shape tree mortality patterns, but mortality rates respond non-linearly to climate when local-scale forest characteristics influence the behavior of tree-killing bark beetles (e.g., WPB). To test for these cross-scale interactions, we conduct aerial drone surveys at 32 sites along a gradient of climatic water deficit (CWD) spanning 350 km of latitude and 1000 m of elevation in WPB-impacted Sierra Nevada forests. We map, measure, and classify over 450,000 trees within 9 km2, validating measurements with coincident field plots. We find greater size, proportion, and density of ponderosa pine (the WPB host) increase host mortality rates, as does greater CWD. Critically, we find a CWD/host size interaction such that larger trees amplify host mortality rates in hot/dry sites. Management strategies for climate change adaptation should consider how bark beetle disturbances can depend on cross-scale interactions, which challenge our ability to predict and understand patterns of tree mortality. © 2021, The Author(s).
语种	英语
scopus关键词	adaptation; aerial survey; beetle; climate change; drought; forest ecosystem; mortality; article; climate change; forest; human; latitude; mortality rate; Nevada; nonhuman; ponderosa pine; Scolytinae; unmanned aerial vehicle; water deficit; animal; bark; California; drought; ecosystem monitoring; host parasite interaction; metabolism; parasitology; pathogenicity; physiology; plant disease; plant dispersal; tree; weevil; California; Sierra Nevada [California]; United States; Coleoptera; Dendroctonus brevicomis; Pinus ponderosa; Scolytinae; pheromone; water; Animals; California; Droughts; Ecological Parameter Monitoring; Host-Parasite Interactions; Pheromones; Pinus ponderosa; Plant Bark; Plant Diseases; Plant Dispersal; Trees; Water; Weevils
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250791
作者单位	Graduate Group in Ecology, University of California, Davis, CA, United States; Department of Plant Sciences, University of California, Davis, CA, United States; Earth Lab, University of Colorado-Boulder, Boulder, CO, United States; USDA Forest Service, Pacific Southwest Research Station, Placerville, CA, United States; USDA Forest Service, Pacific Southwest Research Station, Davis, CA, United States; USDA Forest Service, Pacific Southwest Research Station, Mammoth Lakes, CA, United States
推荐引用方式 GB/T 7714	Koontz M.J.,Latimer A.M.,Mortenson L.A.,et al. Cross-scale interaction of host tree size and climatic water deficit governs bark beetle-induced tree mortality[J],2021,12(1).
APA	Koontz M.J.,Latimer A.M.,Mortenson L.A.,Fettig C.J.,&North M.P..(2021).Cross-scale interaction of host tree size and climatic water deficit governs bark beetle-induced tree mortality.Nature Communications,12(1).
MLA	Koontz M.J.,et al."Cross-scale interaction of host tree size and climatic water deficit governs bark beetle-induced tree mortality".Nature Communications 12.1(2021).