This study used a long-term dataset to examine the impacts of drought on grassland conditions at Las Cienegas National Conservation Area in southeastern Arizona from 2004-2014. Changes included declines in perennial grass basal cover with patchy mortality, leaf litter increases, shrub declines and increases in non-native grass, Lehmann’s Lovegrass (Eragrostis lehmanniana). Grassland cover declined by 25-50% in years with low precipitation from January-June. Given that global climate models predict steep declines in spring rainfall, grassland managers could improve grassland resilience by monitoring rainfall and associated mortality across multiple months, including non-traditional seasons, and by establishing contingency plans for various types of drought. The dataset was developed through a partnership between The Nature Conservancy and Bureau of Land Management with monitoring assistance from stakeholders.Download file (1580KB)
Select a keyword below to find all associated reports and data sets, or browse all of our reports and data.
For best results, do not view the PDF in your web browser. Instead, right-click the file and select "Save file as" in Firefox, or "Save target as" in Internet Explorer to save the PDF to your computer.