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Data from: Identification of Single-Nucleotide Polymorphic Loci Associated with Biomass Yield under Water Deficit in Alfalfa (Medicago sativa L.) Using Genome-Wide Sequencing and Association Mapping

    Alfalfa is a worldwide grown forage crop and is important due to its high biomass production and nutritional value. However, the production of alfalfa is challenged by adverse environmental factors such as drought and other stresses. Developing drought resistance alfalfa is an important breeding target for enhancing alfalfa productivity in arid and semi-arid regions. In the present study, we used genotyping-by-sequencing and genome-wide association to identify marker loci associated with biomass yield under drought in the field in a panel of diverse germplasm of alfalfa.

    Leaf-level trade-offs between drought avoidance and desiccation recovery drive elevation stratification in arid oaks: site environmental data, individual tree stem and leaf physiological data, and analyses

      We investigated whether oak species in the Chiricahua Mountains were 1) elevationally stratified, 2) whether that stratification was correlated with temperature minima, maxima, and water availability, 3) if physiological tolerances to freezing or drought stress correlated with elevation ranges, and 4) if traits important to local (elevation) distributions were correlated with climatic values of the wider species ranges. Data were collected at field sites from wild, adult trees in the Chiricahua Mountains, Arizona, USA from 2014-2015.

      Water Resources of the United States

        Water is one of six science mission areas of the U.S. Geological Survey (USGS). Water's mission is to collect and disseminate reliable, impartial, and timely information that is needed to understand the Nation's water resources. This database contains downloadable water-related spatial data files for exploration and analysis.

        Forest Disturbance Monitor

          View, threshold, and download recent forest disturbance maps for use in targeted detection of forest insects and disease.

          NRCS Regional Conservation Partnership Program - Prairie Grasslands Region

            One of the most threatened ecosystems in North America, native prairie and grasslands contained within the Prairie Grasslands Region are essential habitat for a number of wild game and threatened species, including the lesser prairie chicken and sage grouse. The region also encompasses the Red River Basin of the North and the Ogallala Aquifer—areas that are facing critical conservation needs on working lands from frequent flooding and ponding (in the north) to prolonged drought and aquifer decline (in the Ogallala). This dataset includes a printer-friendly CCA map and shapefiles for GIS.

            NRCS Regional Conservation Partnership Program - Colorado River Basin

              Irrigated agriculture is vitally important to the economy and quality of life in many areas of the Colorado River Basin. It also accounts for a significant share of the basin’s existing water use, shared among 33 million people in the United States plus 3 million in Mexico. Faced with historic drought conditions and water supply pressures, farmers, ranchers, Indian tribes and other water users are in urgent need of accelerated conservation on working agricultural lands. This dataset includes a printer-friendly CCA map and shapefiles for GIS.