—We surveyed whiptail lizard populations for seven summers (2000–2006) in riparian forests along the Rio Grande in central New Mexico. We captured 5,382 individuals from three parthenogenic species (Aspidoscelis exsanguis, Aspidoscelis neomexicana, and Aspidoscelis uniparens) including 129 hatchlings (young-of-the-year) that were later recaptured as adults. Growth data were fit to a logistic gr...

The purpose of this study was to investigate evapotranspiration (ET) from a variety of scales (leaf to landscape) in saltcedar-dominated floodplain vegetation along the lower Virgin River of southern Nevada. Leaf-level gas exchange indicated that saltcedar exhibits similar stomatal conductance as the sympatric phreatophytes arrowweed, mesquite, and willow. However, sap flow in saltcedar was hig...

Las Vegas Wash drains the Las Vegas Basin in Nevada by capturing a series of tributaries and ending in LakeMead and is being developed into an urban wetland. The soils are part of the Land series and contain high concentrations of pedogenic salts because of local sulfate-rich parent materials and high evapotranspiration rates. These salts cause damage to property, affect plant communities in th...

s: 30–31.Richter, B.D., Mendelson, M.A. & Master, L.L. (1997a). Threats to imperiled freshwater fauna.Conservation Biology, 11: 1081–1093. Richter, B.D, Baumgartner, J.V., Wigington, R. & Braun, D.P. (1997b). How much water doesa river need? Freshwater Biology, 37: 231–249.Riley, A.L. (1998). Restoring Streams in Cities: a Guide for Planners, Policymakers, and Citizens. Washingt...

Waterlogging and salinity are considered to be the two major factors affecting growth and plant distribution in salt marshes. But while the effects of salinity are well known, few studies have investigated the impact of the former on plant survival. The purpose of this laboratory experiment was to determine the effects of water level on growth and survival of the halophytes Salicornia europaea ...

Propagule soil-banks are important for colonization and for the maintenance of regional diversity among bryophytes of temperate regions, yet they have not previously been reported from hot desert ecosystems and little is known about the relationship between soil-bank diversity and elevation. I used emergence germination methods to explore patterns of species composition and richness in bryophyt...