Claudia Martínez Olguin 605
Los organismos que viven en ellos son parte de los ecosistemas de agua dulce.
alluvial soil in shallow valley at the head of which a small spring issued a fair trickle of water about 2kms south of Higuerillas, elevation ~1660 meters (~5450 feet); local narrow belt of vegetation constituting an extreme southern extension of the Chihuahuan Desert, Meridional Subregion
Estaba bañándose con la tierra
lower slope of hill south of El Cerrito, 5kms south of Tequisquiapan; bedrock volcanic andesite, an intermediate rock between basalt and rhyolite; elevation about 2,000m (6600 ft)