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Map of the Rio Conchos basin, Chihuahua, México, and its major irrigation districts Figura 1. Mapa de la cuenca del río Conchos, Chihuahua, México y sus principales distritos de riego.
Source publication
The biological diversity of arid and semi-arid ecosystems is threatened by exploitation of wáter resources for agricultural and economic development. As demand for the scarce water supplies of these regions has increased in recent decades in North America, efforts to moderate consumptive water use generally have been unsuccessful. This problem is h...
Contexts in source publication
Context 1
... Rio Conchos Basin. The challenge of reducing landscape-scale threats to biodiversity is exemplified in the Rio Conchos basin (Figure 1). The Rio Conchos is the most biologically and economically important major tributary system in the Northern Chihuahuan Desert of Mexico. ...
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... Rio Conchos is the most biologically and economically important major tributary system in the Northern Chihuahuan Desert of Mexico. It accounts for approximately 30% of the total catchment area and is the largest tributary by water volume of the Rio Grande-Rio Bravo del Norte basin (Kim & Valdés 2002), as it provides approximately one-third of the total annual volume to the Río Bravo (=Rio Grande) proper ( Barrios et al. 2009, over 90% of the water of the Rio Conchos is allocated to irrigation of crops, primarily in the 005 Delicias, 090 Bajo Río Conchos, and 103 Río Florido of the highly degraded Middle Rio Conchos sub-basin (Figure 1), with surface water irrigation fed mostly by water stored in La Boquilla, Francisco I. Madero, and Luis L. León reservoirs. In addition, groundwater extracted within the basin is used extensively for irrigation of crops (Kim & Valdés 2002). ...
Context 3
... sistema acuático también alberga vegetación ribereña que incluye Flaveria chloraefolia, Heliotropium curassavicum var curassavicum y Samolus ebracteatus así como la planta endémica arsénico tolerante, Eleocharis arsenifera (González-Elizondo 2005). En el resto del sistema predominan los tapetes de cianobacterias (cuadro 1; Figura 7). Los mantos bacterianos a lo largo del gradiente de temperatura que -28- system where a wetland existed prior to habitat alterations associated with agricultural activities (Figure 3). ...
