气候变化领域集成服务门户(CCPortal): Impacts of climate and insect herbivory on productivity and physiology of trembling aspen (Populus tremuloides) in Alaskan boreal forests

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DOI	10.1088/1748-9326/ab215f
	Impacts of climate and insect herbivory on productivity and physiology of trembling aspen (Populus tremuloides) in Alaskan boreal forests
	Boyd M.A.; Berner L.T.; Doak P.; Goetz S.J.; Rogers B.M.; Wagner D.; Walker X.J.; Mack M.C.
发表日期	2019
ISSN	17489318
卷号	14 期号:8
英文摘要	Climate change is impacting forested ecosystems worldwide, particularly in the Northern Hemisphere where warming has increased at a faster rate than the rest of the globe. As climate warms, trembling aspen (Populus tremuloides) is expected to become more successful in northern boreal forests because of its current presence in drier areas of North America. However, large-scale productivity decline of aspen has recently been documented throughout the United States and Canada as a result of drought and insect outbreaks. We used tree ring measurements (basal area increment (BAI) and stable carbon isotopes (δ 13C)) and remote sensing indices of vegetation productivity (NDVI) to study the impact of climate and damage by the aspen epidermal leaf miner (Phyllocnistis populiella) on aspen productivity and physiology in interior Alaska. We found that productivity decreased with greater leaf mining and was not sensitive to growing season (GS) moisture availability. Although productivity decreased during high leaf mining years, it recovered to pre-outbreak levels during years of low insect damage, suggesting a degree of resilience to P. populiella mining. Climate and leaf mining interacted to influence tree ring δ 13C, with greater leaf mining resulting in decreased δ 13C when GS moisture availability was low. We also found that NDVI was negatively associated with leaf mining, and positively correlated with BAI and the δ 13C decrease corresponding to mining. This suggests that NDVI is capturing not only variations in productivity, but also changes in physiology associated with P. populiella. Overall, these findings indicate that the indirect effects of P. populiella mining have a larger impact on aspen productivity and physiology than climate under current conditions, and is essential to consider when assessing growth, physiology and NDVI trends in interior Alaska. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	aspen epidermal leaf miner; climate change; satellite remote sensing; stable carbon isotopes; tree rings
语种	英语
scopus关键词	Forestry; Isotopes; Miners; Moisture; Physiology; Productivity; Remote sensing; Basal area increment; Northern Hemispheres; Populus tremuloides; Remote sensing index; Satellite remote sensing; Stable carbon isotopes; Tree rings; Vegetation productivity; Climate change; boreal forest; carbon isotope; climate change; climate conditions; deciduous tree; forest ecosystem; growing season; herbivory; leafminer; NDVI; Northern Hemisphere; physiology; remote sensing; stable isotope; tree ring; Alaska; Canada; United States; Agromyzidae; Hexapoda; Phyllocnistis; Populus tremuloides
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154446
作者单位	Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, United States; School of Informatics, Computing and Cyber Systems, Northern Arizona University, Flagstaff, AZ, United States; Department of Biology and Wildlife, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States; Woods Hole Research Center, Falmouth, MA, United States
推荐引用方式 GB/T 7714	Boyd M.A.,Berner L.T.,Doak P.,et al. Impacts of climate and insect herbivory on productivity and physiology of trembling aspen (Populus tremuloides) in Alaskan boreal forests[J],2019,14(8).
APA	Boyd M.A..,Berner L.T..,Doak P..,Goetz S.J..,Rogers B.M..,...&Mack M.C..(2019).Impacts of climate and insect herbivory on productivity and physiology of trembling aspen (Populus tremuloides) in Alaskan boreal forests.Environmental Research Letters,14(8).
MLA	Boyd M.A.,et al."Impacts of climate and insect herbivory on productivity and physiology of trembling aspen (Populus tremuloides) in Alaskan boreal forests".Environmental Research Letters 14.8(2019).