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We assessed the impacts of co-occurring invasive plant species on fire regimes and postfire native communities in the Mojave Desert, western USA by analyzing the distribution and co-occurrence patterns of three invasive annual grasses known to alter fuel conditions and community structure: Red Brome (Bromus rubens), Cheatgrass (Bromus tectorum), and Mediterranean grass (Schismus spp.: Schismus arabicus and Schismus barbatus), and an invasive forb, red stemmed filaree (Erodium cicutarium) which can dominate postfire sites. We developed species distribution models (SDMs) for each of the four taxa and analyzed field plot data to assess the relationship between invasives and fire frequency, years postfire, and the impacts...
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The Mediterranean ecosystems of southern California are some of the most ecologically diverse systems in the world. The diversity of plants and animals, as well as high rates of endemism, make the area a biodiversity hotspot. High diversity in plant and animal species contributes greatly to the health and productivity of ecosystems, and plays an important role in the local and state economy (e.g. tourism, food crops, etc.). San Diego County's complex topography, highly variable precipitation and climate play a large role in determining the biology of the region. Changing temperatures and precipitation patterns due to climate change would alter the region's climate and add to other stressors such as habitat fragmentation...


    map background search result map search result map Assessing Climate Impacts and Adaptation for Biodiversity and Natural Resources in San Diego County Invasive Plant Cover in the Mojave Desert, 2009 - 2013 (ver. 2.0, April 2021) Species distribution model of the invasive annual grass Bromus rubens (red brome) in the Mojave Desert Species distribution model of the invasive annual forb Erodium cicutarium (red-stemmed filaree) in the Mojave Desert Species distribution model of the invasive annual grass Schismus spp (Mediterranean split grass) in the Mojave Desert Species distribution model of the invasive annual grass Bromus tectorum (cheatgrass) in the Mojave Desert Assessing Climate Impacts and Adaptation for Biodiversity and Natural Resources in San Diego County Invasive Plant Cover in the Mojave Desert, 2009 - 2013 (ver. 2.0, April 2021) Species distribution model of the invasive annual grass Bromus rubens (red brome) in the Mojave Desert Species distribution model of the invasive annual forb Erodium cicutarium (red-stemmed filaree) in the Mojave Desert Species distribution model of the invasive annual grass Schismus spp (Mediterranean split grass) in the Mojave Desert Species distribution model of the invasive annual grass Bromus tectorum (cheatgrass) in the Mojave Desert