Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14720 |
Legacies of more frequent drought in ponderosa pine across the western United States | |
Peltier, Drew M. P.1,2; Ogle, Kiona1,2 | |
2019-11-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:11页码:3803-3816 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Despite widespread interest in drought legacies-multiyear impacts of drought on tree growth-the key implication of reported drought legacies remains unaddressed: as impaired growth and slow recovery associated with drought legacies are pervasive across forest ecosystems, what is the impact of more frequent drought conditions? We investigated the assumption that either multiple drought years occurring during a short period (multiyear droughts), or droughts occurring during the recovery period from previous drought (compounded droughts), are detrimental to subsequent growth. There is evidence that drought responses may vary among populations of widespread species, leading us to examine regional differences in responses of the conifer Pinus ponderosa to historic drought frequency in the western United States. More frequent drought conditions incurred additional growth declines and shifts in growth-climate sensitivities in the years following drought relative to single-drought events, with 'triple-droughts' being worse than 'double-droughts'. Notably, prediction skill was not strongly reduced when ignoring compounded droughts, a consequence of the temporally comprehensive formulation of our stochastic antecedent model that accounts for the climatic memory of tree growth. We argue that incorporating drought-induced temporal variability in tree growth sensitivities can aid inference gained from statistical models, where more simplistic models could overestimate the severity of drought legacies. We also found regional differences in response to repeated drought, and suggest plastic post-drought sensitivities and climatic memory may represent beneficial physiological adjustments in interior regions. Within-species variability may thus mediate forest responses to increasing drought frequency under future climate change, but experimental approaches using more species are necessary to improve our understanding of the mechanisms that underlie drought legacy effects on tree growth. |
英文关键词 | disturbance hydraulic failure ITRDB memory NSC pervasive plasticity repeat SAM tree-ring |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000489174400020 |
WOS关键词 | CARBON-ISOTOPE DISCRIMINATION ; INDUCED TREE MORTALITY ; CLIMATE-CHANGE ; PHYSIOLOGICAL-MECHANISMS ; HYDRAULIC DETERIORATION ; PRECIPITATION PULSES ; GEOGRAPHIC-VARIATION ; ECOLOGICAL MEMORY ; LINKING DROUGHT ; FIRE OCCURRENCE |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/188073 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.No Arizona Univ, Dept Biol Sci, 617 S Beaver St,POB 5640, Flagstaff, AZ 86004 USA; 2.No Arizona Univ, Sch Informat Comp & Cyber Syst, Flagstaff, AZ 86004 USA |
推荐引用方式 GB/T 7714 | Peltier, Drew M. P.,Ogle, Kiona. Legacies of more frequent drought in ponderosa pine across the western United States[J]. GLOBAL CHANGE BIOLOGY,2019,25(11):3803-3816. |
APA | Peltier, Drew M. P.,&Ogle, Kiona.(2019).Legacies of more frequent drought in ponderosa pine across the western United States.GLOBAL CHANGE BIOLOGY,25(11),3803-3816. |
MLA | Peltier, Drew M. P.,et al."Legacies of more frequent drought in ponderosa pine across the western United States".GLOBAL CHANGE BIOLOGY 25.11(2019):3803-3816. |
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