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To determine if invasive annual grasses increased around energy developments after the construction phase, we calculated an invasives index using Landsat TM and ETM+ imagery for a 34-year time period (1985-2018) and assessed trends for 1,755 wind turbines (from the U.S. Wind Turbine Database) installed between 1988 and 2013 in the southern California desert. The index uses the maximum normalized difference vegetation index (NDVI) for early season greenness (January-June), and mean NDVI (July-October) for the later dry season. We estimated the relative cover of invasive annuals each year at turbine locations and control sites and tested for changes before and after each turbine was installed. These data were used...
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Establishing connections among natural landscapes is the most frequently recommended strategy for adapting management of natural resources in response to climate change. The U.S. Northern Rockies still support a full suite of native wildlife, and survival of these populations depends on connected landscapes. Connected landscapes support current migration and dispersal as well as future shifts in species ranges that will be necessary for species to adapt to our changing climate. Working in partnership with state and federal resource managers and private land trusts, we sought to: 1) understand how future climate change may alter habitat composition of landscapes expected to serve as important connections for wildlife,...
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Defining the pre-European range of vegetation communities can enhance our understanding of the role soil, hydrology, and climate had on climax plant communities within southwest Louisiana. Coastal prairie grasslands were in a perpetual state of succession due to two primary disturbances; grazing, primarily by bison and other ungulates, and fires ignited by lightning and Native Americans. Along its borders, prairie vegetation blended into adjacent plant communities forming biologically diverse ecotones that may have fluctuated between a prairie, marsh, or forest dominated community as a result of variable conditions including climate cycles, disturbance and soil characteristics. Since European settlement, this landscape...
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Defining the pre-European range of vegetation communities can enhance our understanding of the role soil, hydrology, and climate had on climax plant communities within southwest Louisiana. Coastal prairie grasslands were in a perpetual state of succession due to two primary disturbances; grazing, primarily by bison and other ungulates, and fires ignited by lightning and Native Americans. Along its borders, prairie vegetation blended into adjacent plant communities forming biologically diverse ecotones that may have fluctuated between a prairie, marsh, or forest dominated community as a result of variable conditions including climate cycles, disturbance and soil characteristics. Since European settlement, this landscape...
    map background search result map search result map Proportion of Exotic Grass and Forbs Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Grassland Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Potential climate change impacts on grassland connectivity in the U.S. Northern Rockies Soil, geomorphology and pre-European settlement vegetation associations of Southwest Louisiana Soil, Geomorphology and Pre-European Settlement Vegetation Associations of Southwest Louisiana Data supporting Landsat time series assessment of invasive annual grasses following energy development Soil, geomorphology and pre-European settlement vegetation associations of Southwest Louisiana Soil, Geomorphology and Pre-European Settlement Vegetation Associations of Southwest Louisiana Data supporting Landsat time series assessment of invasive annual grasses following energy development Potential climate change impacts on grassland connectivity in the U.S. Northern Rockies Proportion of Exotic Grass and Forbs Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Exotic Grass and Forbs Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area Grassland Land Cover in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (3-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (270-m scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (540-m scale) in the Wyoming Basins Ecoregional Assessment area