Fire has become more extensive in recent decades in southwestern United States arid lands. Burned areas pose management challenges and opportunities, and increasing our understanding of post-fire plant colonization may assist management decision-making. We examined plant communities, soils, and soil seed banks two years after the 2005 Loop Fire, located in a creosote-blackbrush community in Red...

This study presents the status of ex situ and in conservation for crop wild relatives rice, potato, sweet finger millet Brazil, subsequent germplasm collection expeditions. research is part a global initiative entitled “Adapting Agriculture to Climate Change: Collecting, Protecting, Preparing Crop Wild Relatives” supported by Global Diversity Trust. Species primary, secondary, tertiary gene poo...

Tamarix ramosissima is a naturalized, nonnative plant species which has become widespread along riparian corridors throughout the western United States. We test the hypothesis that the distribution and success of Tamarix result from human modification of river-flow regimes. We conducted a natural experiment in eight ecoregions in arid and semiarid portions of the western United States, measurin...