Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11258-018-0813-7 |
Legacy effects of a regional drought on aboveground net primary production in six central US grasslands | |
Griffin-Nolan, Robert J.1,2; Carroll, Charles J. W.1,2; Denton, Elsie M.1,4; Johnston, Melissa K.1,5; Collins, Scott L.3; Smith, Melinda D.1,2; Knapp, Alan K.1,2 | |
通讯作者 | Griffin-Nolan, Robert J. |
来源期刊 | PLANT ECOLOGY
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ISSN | 1385-0237 |
EISSN | 1573-5052 |
出版年 | 2018 |
卷号 | 219期号:5页码:505-515 |
英文摘要 | Global climate models predict increases in the frequency and severity of drought worldwide, directly affecting most ecosystem types. Consequently, drought legacy effects (drought-induced alterations in ecosystem function postdrought) are expected to become more common in ecosystems varying from deserts to grasslands to forests. Drought legacies in grasslands are usually negative and reduce ecosystem function, particularly after extended drought. Moreover, ecosystems that respond strongly to drought (high sensitivity) might be expected to exhibit the largest legacy effects the next year, but this relationship has not been established. We quantified legacy effects of a severe regional drought in 2012 on postdrought (2013) aboveground net primary productivity (ANPP) in six central US grasslands. We predicted that (1) the magnitude of drought legacy effects measured in 2013 would be positively related to the sensitivity of ANPP to the 2012 drought, and (2) drought legacy effects would be negative (reducing 2013 ANPP relative to that expected given normal precipitation amounts). The magnitude of legacy effects measured in 2013 was strongly related (r (2) = 0.88) to the sensitivity of ANPP to the 2012 drought across these six grasslands. However, contrary to expectations, positive legacy effects (greater than expected ANPP) were more commonly observed than negative legacy effects. Thus, while the sensitivity of ANPP to drought may be a useful predictor of the magnitude of legacy effects, short-term (1-year) severe droughts may cause legacy effects that are more variable than those observed after multiyear droughts. |
英文关键词 | Climate extremes Grasslands Drought legacy Drought sensitivity ANPP |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000429362800003 |
WOS关键词 | SEMIARID GRASSLAND ; GREAT-PLAINS ; TEMPORAL DYNAMICS ; UNITED-STATES ; ECOSYSTEM ; VARIABILITY ; CLIMATE ; FOREST ; SENSITIVITY ; RESILIENCE |
WOS类目 | Plant Sciences ; Ecology ; Forestry |
WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
来源机构 | Colorado State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/212191 |
作者单位 | 1.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA; 2.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA; 3.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; 4.ARS, USDA, Eastern Oregon Agr Res, Burns, OR USA; 5.ARS, USDA, Cent Plains Expt Range, Nunn, CO USA |
推荐引用方式 GB/T 7714 | Griffin-Nolan, Robert J.,Carroll, Charles J. W.,Denton, Elsie M.,et al. Legacy effects of a regional drought on aboveground net primary production in six central US grasslands[J]. Colorado State University,2018,219(5):505-515. |
APA | Griffin-Nolan, Robert J..,Carroll, Charles J. W..,Denton, Elsie M..,Johnston, Melissa K..,Collins, Scott L..,...&Knapp, Alan K..(2018).Legacy effects of a regional drought on aboveground net primary production in six central US grasslands.PLANT ECOLOGY,219(5),505-515. |
MLA | Griffin-Nolan, Robert J.,et al."Legacy effects of a regional drought on aboveground net primary production in six central US grasslands".PLANT ECOLOGY 219.5(2018):505-515. |
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