David’s research interests involve all aspects of plant ecology, both at the individual plant level and at the plant community level. Recent research efforts have involved extensive collaboration with colleagues in assessing effects of biosolids on Chihuahuan desert rangelands. This work examined nutrient cycling, effects on forage production, and water quality and erosion implications. He has also collaborated with fire ecologists in studying effects of wildfire and prescribed fire in the southwest and in Texas where he studied effects on endangered cacti as well as community-level effects in short- and mixed grass prairies
