干旱区生态环境知识资源中心(Arid): Irrigation canals are newly created streams of semi-arid agricultural regions

Arid

DOI	10.1016/j.scitotenv.2018.07.246
	Irrigation canals are newly created streams of semi-arid agricultural regions
	Carlson, Erick A.1,2; Cooper, David J.1,2; Merritt, David M.1,3; Kondratieff, Boris C.1,2,4; Waskom, Reagan M.5
通讯作者	Carlson, Erick A.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	646 页码:770-781
英文摘要	The natural hydrologic processes that create and maintain the diversity of aquatic and riparian habitats along the World's streams and rivers have been profoundly altered by humans. Diversion of surface water to support production agriculture in arid and semi-arid regions has degraded ecosystems but also created potential habitat along and in canals specifically designed to transport water. The prevalence of canals and the immense amount of water used for agriculture have created these new artificial stream systems. This study demonstrates the potential for irrigation canals to support riparian and aquatic communities similar to natural streams in urban/residential and agricultural landscapes. We examined the hydrological and ecological characteristics of streams and irrigation canals in urban and agricultural landscapes in northeastern Colorado, typical of regions dominated by irrigation-supported agriculture. Flow patterns in canals depended on their size and had a range of patterns with potential ecological consequences such as rapidly rising and falling water stage, intermittent dry periods, and delayed peak and base flows compared to natural streams. Despite these hydrologic differences, the taxonomic and functional composition of riparian plant and aquatic macroinvertebrate communities indicated that ecological similarities exist between streams and canals, but are dependent, in part, on their landscape setting with stronger similarities in agricultural areas. We also tested the influence of characterizing taxa by functional groups using physiology, ecology and life history traits to explore attributes of habitats including woody canopy structure and water quality. We used a Habitat Quality Index (HQI) that combined physical and biological measures into a single index. Streams scored higher on average within agriculture and urban/residential settings compared to canals; however, one third of urban canals scored above the average of agricultural streams. This multidisciplinary study shows that irrigation canals can be valuable riparian and aquatic habitat, especially in regions with severely degraded streams. (C) 2018 Published by Elsevier B.V.
英文关键词	Riparian vegetation Aquatic macroinvertebrates Irrigation canal Community ecology
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000445164800074
WOS关键词	RIPARIAN VEGETATION ; DRAINAGE DITCHES ; FOOD WEBS ; ECOLOGICAL CONSEQUENCES ; MACROINVERTEBRATE ASSEMBLAGES ; ECOSYSTEM PROCESSES ; BASIC PRINCIPLES ; ORGANIC-MATTER ; GREEN RIVER ; BIODIVERSITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
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/2XILL650/218576
作者单位	1.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA; 2.Colorado State Univ, Dept Forest & Rangeland Stewardship, Ft Collins, CO 80523 USA; 3.USFS Natl Watershed, Fish & Wildlife Staff, Ft Collins, CO 80526 USA; 4.Colorado State Univ, Bioagr Sci & Pest Management, Ft Collins, CO 80523 USA; 5.Colorado State Univ, Colorado Water Inst, Ft Collins, CO 50523 USA
推荐引用方式 GB/T 7714	Carlson, Erick A.,Cooper, David J.,Merritt, David M.,et al. Irrigation canals are newly created streams of semi-arid agricultural regions[J]. Colorado State University,2019,646:770-781.
APA	Carlson, Erick A.,Cooper, David J.,Merritt, David M.,Kondratieff, Boris C.,&Waskom, Reagan M..(2019).Irrigation canals are newly created streams of semi-arid agricultural regions.SCIENCE OF THE TOTAL ENVIRONMENT,646,770-781.
MLA	Carlson, Erick A.,et al."Irrigation canals are newly created streams of semi-arid agricultural regions".SCIENCE OF THE TOTAL ENVIRONMENT 646(2019):770-781.