Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa94fa |
The importance of drought-pathogen interactions in driving oak mortality events in the Ozark Border Region | |
Wood, Jeffrey D.1; Knapp, Benjamin O.1; Muzika, Rose-Marie1; Stambaugh, Michael C.1; Gu, Lianhong2,3 | |
2018 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Forests are expected to become more vulnerable to drought-induced tree mortality owing to rising temperatures and changing precipitation patterns that amplify drought lethality. There is a crucial knowledge gap regarding drought-pathogen interactions and their effects on tree mortality. The objectives of this research were to examine whether stand dynamics and 'background' mortality rates were affected by a severe drought in 2012; and to evaluate the importance of drought-pathogen interactions within the context of a mortality event that killed 10.0% and 26.5% of white (Quercus alba L.) and black (Q. velutina Lam.) oak stems, respectively, in a single year. We synthesized (i) forest inventory data (24 years), (ii) 11 years of ecosystem flux data with supporting biological data including predawn leaf water potential and annual forest inventories, (iii) tree-ring analyses of individual white oaks that were alive and ones that died in 2013, and (iv) documentation of a pathogen infection. This forest displayed stand dynamics consistent with expected patterns of decreasing tree density and increasing basal area. Continued basal area growth outpaced mortality implying a net accumulation of live biomass, which was supported by eddy covariance ecosystem carbon flux observations. Individual white and black oaks that died in 2013 displayed historically lower growth with the majority of dead trees exhibiting Biscogniauxia cankers. Our observations point to the importance of event-based oak mortality and that drought-Biscogniauxia interactions are important in shaping oak stand dynamics in this region. Although forest function has not been significantly impaired, these drought-pathogen interactions could amplify mortality under future climate conditions and thus warrant further investigation. |
英文关键词 | abiotic-biotic interactions Biscogniauxia ecosystem carbon and water fluxes forest inventory tree mortality |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419386400001 |
WOS关键词 | WATER-STRESS ; FOREST MORTALITY ; CENTRAL MISSOURI ; EDDY COVARIANCE ; CLIMATE-CHANGE ; TREE ; DECLINE ; LONG ; COLONIZATION ; DEFOLIATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/36471 |
专题 | 气候变化 |
作者单位 | 1.Univ Missouri, Sch Nat Resources, Columbia, MO 65211 USA; 2.Oak Ridge Natl Lab, Environm Sci Div, Oak Ridge, TN USA; 3.Climate Change Sci Inst, Oak Ridge, TN USA |
推荐引用方式 GB/T 7714 | Wood, Jeffrey D.,Knapp, Benjamin O.,Muzika, Rose-Marie,et al. The importance of drought-pathogen interactions in driving oak mortality events in the Ozark Border Region[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(1). |
APA | Wood, Jeffrey D.,Knapp, Benjamin O.,Muzika, Rose-Marie,Stambaugh, Michael C.,&Gu, Lianhong.(2018).The importance of drought-pathogen interactions in driving oak mortality events in the Ozark Border Region.ENVIRONMENTAL RESEARCH LETTERS,13(1). |
MLA | Wood, Jeffrey D.,et al."The importance of drought-pathogen interactions in driving oak mortality events in the Ozark Border Region".ENVIRONMENTAL RESEARCH LETTERS 13.1(2018). |
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