Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/1365-2656.12614 |
Precipitation alters interactions in a grassland ecological community | |
Deguines, Nicolas1,2; Brashares, Justin S.2; Prugh, Laura R.1 | |
通讯作者 | Deguines, Nicolas |
来源期刊 | JOURNAL OF ANIMAL ECOLOGY
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ISSN | 0021-8790 |
EISSN | 1365-2656 |
出版年 | 2017 |
卷号 | 86期号:2页码:262-272 |
英文摘要 | 1. Climate change is transforming precipitation regimes world-wide. Changes in precipitation regimes are known to have powerful effects on plant productivity, but the consequences of these shifts for the dynamics of ecological communities are poorly understood. This knowledge gap hinders our ability to anticipate and mitigate the impacts of climate change on biodiversity. 2. Precipitation may affect fauna through direct effects on physiology, behaviour or demography, through plant-mediated indirect effects, or by modifying interactions among species. In this paper, we examined the response of a semi-arid ecological community to a fivefold change in precipitation over 7 years. 3. We examined the effects of precipitation on the dynamics of a grassland ecosystem in central California from 2007 to 2013. We conducted vegetation surveys, pitfall trapping of invertebrates, visual surveys of lizards and capture-mark-recapture surveys of rodents on 30 plots each year. We used structural equation modelling to evaluate the direct, indirect and modifying effects of precipitation on plants, ants, beetles, orthopterans, kangaroo rats, ground squirrels and lizards. 4. We found pervasive effects of precipitation on the ecological community. Although precipitation increased plant biomass, direct effects on fauna were often stronger than plantmediated effects. In addition, precipitation altered the sign or strength of consumer-resource and facilitative interactions among the faunal community such that negative or neutral interactions became positive or vice versa with increasing precipitation. 5. These findings indicate that precipitation influences ecological communities in multiple ways beyond its recognized effects on primary productivity. Stochastic variation in precipitation may weaken the average strength of biotic interactions over time, thereby increasing ecosystem stability and resilience to climate change. |
英文关键词 | arthropods conditional outcomes Dipodomys ingens dryland ecological non-monotonicity food web path analysis rain San Joaquin antelope squirrel |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000397968700010 |
WOS关键词 | CLIMATE-CHANGE ; SPECIES INTERACTIONS ; WATER AVAILABILITY ; POPULATIONS ; ECOSYSTEMS ; IMPACTS ; DESERT ; SOIL ; CONSERVATION ; BIODIVERSITY |
WOS类目 | Ecology ; Zoology |
WOS研究方向 | Environmental Sciences & Ecology ; Zoology |
来源机构 | University of California, Berkeley |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200002 |
作者单位 | 1.Univ Washington, Sch Environm & Forest Sci, Winkenwerder Hall,W Stevens Way NE, Seattle, WA 98195 USA; 2.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Mulford Hall,Hilgard Way, Berkeley, CA 94720 USA |
推荐引用方式 GB/T 7714 | Deguines, Nicolas,Brashares, Justin S.,Prugh, Laura R.. Precipitation alters interactions in a grassland ecological community[J]. University of California, Berkeley,2017,86(2):262-272. |
APA | Deguines, Nicolas,Brashares, Justin S.,&Prugh, Laura R..(2017).Precipitation alters interactions in a grassland ecological community.JOURNAL OF ANIMAL ECOLOGY,86(2),262-272. |
MLA | Deguines, Nicolas,et al."Precipitation alters interactions in a grassland ecological community".JOURNAL OF ANIMAL ECOLOGY 86.2(2017):262-272. |
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