Arid
DOI10.1002/eco.1993
Using remote sensing to assess the impact of beaver damming on riparian evapotranspiration in an arid landscape
Fairfax, Emily; Small, Eric E.
通讯作者Fairfax, Emily
来源期刊ECOHYDROLOGY
ISSN1936-0584
EISSN1936-0592
出版年2018
卷号11期号:7
英文摘要

Beaver damming creates and maintains riparian ecosystems in arid regions, which are often afflicted by seasonal and multi-year droughts. We hypothesize that beaver ponds act as buffers against the effects of drought on nearby riparian vegetation via the following mechanism: Beaver ponds formed upstream of each dam retain water during wetter parts of the year, then during drier parts of the year, they gradually release that water into nearby soil where it is accessible to the roots of riparian vegetation. We calculated the evapotranspiration (ET) and normalized difference vegetation index (NDVI) of riparian vegetation on Susie and Maggie Creeks in north-eastern Nevada from 2013 to 2016 and then compared the ET and NDVI to the location and intensity of beaver damming on the creeks. We found that the ET of riparian areas with beaver damming was 50-150% higher than the ET in riparian areas without beaver damming and that NDVI in dammed riparian areas was 6-88% higher than that in undammed areas. These differences peaked in mid-summer when the landscape is at its hottest and driest state. There was no apparent loss of beaver pond drought buffering as a multi-year drought (2013-2015) progressed. Our results indicate that riparian areas with beaver damming in arid landscapes are better able to maintain vegetation productivity than areas without beaver damming during both short and extended periods of drought.


英文关键词arid beaver drought evapotranspiration METRIC NDVI remote sensing riparian
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000446431200016
WOS关键词WATER-CONTROLLED ECOSYSTEMS ; ENERGY-BALANCE ; CASTOR-CANADENSIS ; SEASONAL DROUGHT ; MAPPING EVAPOTRANSPIRATION ; HYDROLOGIC PROCESSES ; UNITED-STATES ; METRIC MODEL ; ACTIVE-ROLE ; DAMS
WOS类目Ecology ; Environmental Sciences ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208682
作者单位Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA
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GB/T 7714
Fairfax, Emily,Small, Eric E.. Using remote sensing to assess the impact of beaver damming on riparian evapotranspiration in an arid landscape[J],2018,11(7).
APA Fairfax, Emily,&Small, Eric E..(2018).Using remote sensing to assess the impact of beaver damming on riparian evapotranspiration in an arid landscape.ECOHYDROLOGY,11(7).
MLA Fairfax, Emily,et al."Using remote sensing to assess the impact of beaver damming on riparian evapotranspiration in an arid landscape".ECOHYDROLOGY 11.7(2018).
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