Arid
DOI10.1002/eco.1864
Riparian plant composition along hydrologic gradients in a dryland river basin and implications for a warming climate
Reynolds, Lindsay V.1,2; Shafroth, Patrick B.2
通讯作者Reynolds, Lindsay V.
来源期刊ECOHYDROLOGY
ISSN1936-0584
EISSN1936-0592
出版年2017
卷号10期号:6
英文摘要

Droughts in dryland regions on all continents are expected to increase in severity and duration under future climate projections. In dryland regions, it is likely that minimum streamflow will decrease with some perennial streams shifting to intermittent flow under climate-driven changes in precipitation and runoff and increases in temperature. Decreasing base flow and shifting flow regimes from perennial to intermittent could have significant implications for stream-dependent biota, including riparian vegetation. In this study, we asked, how do riparian plant communities vary along wet-to-dry hydrologic gradients on small (first-third order) streams? We collected data on geomorphic, hydrologic, and plant community characteristics on 54 stream sites ranging in hydrology from intermittent to perennial flow across the Upper Colorado River Basin (284,898 km(2)). We found that plant communities varied along hydrologic gradients from high to low elevation between streams, and perennial to intermittent flow. We identified indicator species associated with different hydrologic conditions and suggest how plant communities may shift under warmer, drier conditions. Our results indicate that species richness and cover of total, perennial, wetland, and native plant groups will decrease while annual plants will increase under drying conditions. Understanding how plant communities respond to regional drivers such as hydroclimate requires broad-scale approaches such as sampling across whole river basins. With increasingly arid conditions in many regions of the globe, understanding plant community shifts is key to understanding the future of riparian ecosystems.


英文关键词arid and semiarid lands Colorado River Basin drought ecological flows intermittent and perennial streams riparian vegetation streamflow permanence temporary streams
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000410633100019
WOS关键词WESTERN NORTH-AMERICA ; NATURAL FLOW REGIME ; SAN-PEDRO RIVER ; COLORADO RIVER ; UNITED-STATES ; VEGETATION COMMUNITIES ; TEMPORAL VARIABILITY ; WETLAND DISTRIBUTION ; CHANGING CLIMATE ; DESERT STREAM
WOS类目Ecology ; Environmental Sciences ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Water Resources
来源机构United States Geological Survey ; Colorado State University ; E18
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198401
作者单位1.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA;
2.US Geol Survey, Ft Collins Sci Ctr, 2150 Ctr Ave,Bldg C, Ft Collins, CO 80526 USA
推荐引用方式
GB/T 7714
Reynolds, Lindsay V.,Shafroth, Patrick B.. Riparian plant composition along hydrologic gradients in a dryland river basin and implications for a warming climate[J]. United States Geological Survey, Colorado State University, E18,2017,10(6).
APA Reynolds, Lindsay V.,&Shafroth, Patrick B..(2017).Riparian plant composition along hydrologic gradients in a dryland river basin and implications for a warming climate.ECOHYDROLOGY,10(6).
MLA Reynolds, Lindsay V.,et al."Riparian plant composition along hydrologic gradients in a dryland river basin and implications for a warming climate".ECOHYDROLOGY 10.6(2017).
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