Arid
DOI10.1016/j.ecoleng.2013.03.003
From accident to management: The Cienega de Santa Clara ecosystem
Carrillo-Guerrero, Yamilett K.1; Flessa, Karl1; Hinojosa-Huerta, Osvel2; Lopez-Hoffman, Laura3,4
通讯作者Flessa, Karl
来源期刊ECOLOGICAL ENGINEERING
ISSN0925-8574
EISSN1872-6992
出版年2013
卷号59页码:84-92
英文摘要

The 1977 creation of the Cienega de Santa Clara, an 18,000 ha wetland (6500 ha cattail marsh with 11,500 ha of open water lagoons and mudflats) in Sonora, Mexico, was the unintended consequence of the solution to reduce the salinity of the U.S. water deliveries to Mexico. Under the 1944 Water Treaty, the U.S. was obliged to deliver water to Mexico. But the water that was delivered from the U.S. harmed crops in Mexico because it included brackish agricultural runoff from fields in the Lower Colorado River basin. In 1972, Minute 242 to the Treaty called for a reduction in the salinity of U.S. deliveries. As a result, the U.S. diverted the agricultural runoff to a desiccated Colorado Delta floodplain in Sonora, Mexico, inadvertently creating the Cienega de Santa Clara, a wetland that now provides habitat for protected species (Desert Pupfish and the Yuma Clapper Rail), and wintering grounds for more than 200,000 migratory waterbirds. In June 1993, the wetland became part of Mexico’s Upper Gulf of California and Colorado River Delta Biosphere Reserve. The Yuma Desalting Plant, completed in 1992, was constructed by the U.S. to desalinate the agricultural runoff that flows to the Cienega. The high cost of operation and abundant Colorado River flow have kept the plant idle. However, the past decade of drought in the Colorado Basin has now made the agricultural runoff a valuable resource to meet growing U.S. water demands, but operating the plant could risk damage to the Cienega wetlands. In response, a binational collaboration of government agencies, environmental groups and university scientists began working together to protect and study this wetland. Replacement flows and environmental monitoring during the 2010-2011 trial run of the Yuma Desalting Plant are prompting a shift from passive to active management of this binational ecosystem. The purpose of this paper is to identify management practices that could help maximize the ecological benefits of water flows. The suggested management practices are based on historical variations in quantity, timing and quality of inflows, occasional dredgings and wildfires. The most important management recommendation is a formal allocation of water of adequate volume and quality. The agreement reached in 2010s Minute 316 to the Treaty is a precedent for successful efforts to protect shared ecosystems along the U.S.-Mexico border. (C) 2013 Elsevier B.V. All rights reserved.


英文关键词Cienega de Santa Clara Colorado River Minute 316 Minute 242 IBWC 1944 International Water Treaty
类型Article
语种英语
国家USA ; Mexico
收录类别SCI-E
WOS记录号WOS:000325750400009
WOS关键词COLORADO RIVER ; RIO-COLORADO ; MEXICO ; WETLAND ; DELTA ; SALINITY
WOS类目Ecology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology ; Engineering
来源机构University of Arizona
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/176716
作者单位1.Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA;
2.Pronatura Noroeste, San Luis Rio Colorado, Mexico;
3.Univ Arizona, Sch Nat Resources, Tucson, AZ 85721 USA;
4.Univ Arizona, Environm & Udall Ctr Studies Publ Policy, Tucson, AZ 85721 USA
推荐引用方式
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Carrillo-Guerrero, Yamilett K.,Flessa, Karl,Hinojosa-Huerta, Osvel,et al. From accident to management: The Cienega de Santa Clara ecosystem[J]. University of Arizona,2013,59:84-92.
APA Carrillo-Guerrero, Yamilett K.,Flessa, Karl,Hinojosa-Huerta, Osvel,&Lopez-Hoffman, Laura.(2013).From accident to management: The Cienega de Santa Clara ecosystem.ECOLOGICAL ENGINEERING,59,84-92.
MLA Carrillo-Guerrero, Yamilett K.,et al."From accident to management: The Cienega de Santa Clara ecosystem".ECOLOGICAL ENGINEERING 59(2013):84-92.
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