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Filters Date Range Past year (1) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Citation (5) Types Journal Citation (4) Contacts Nathan Piekielek Diane Debinski Glenn, Edward P Hultine, Kevin R Nagler, Pamela L More... Categories Publication (5) Data (3) Tag Types NCCWSC Science Themes (3) Organization (3) Theme (3) Wildlife and Plants (3) Drought, Fire and Extreme Weather (1) Label (1) Science Themes (1) Tag Schemes https://www.sciencebase.gov/vocab/category/NCCWSC/Project/OrganizationName (4) https://www.sciencebase.gov/vocab/category/NCCWSC/ScienceThemes (4) ISO 19115 Topic Categories (3) https://www.sciencebase.gov/vocab/category/NCCWSC/WildlifeandPlants (3) https://www.sciencebase.gov/vocab/category/NCCWSC/DroughtFireandExtremeWeather (1) View Results as: JSON ATOM CSV

Wide-area estimates of saltcedar (Tamarix spp.) evapotranspiration on the lower Colorado River measured by heat balance and remote sensing methods In many places along the lower Colorado River, saltcedar (Tamarix spp) has replaced the native shrubs and trees, including arrowweed, mesquite, cottonwood and willows. Some have advocated that by removing saltcedar, we could save water and create environments more favourable to these native species. To test these assumptions we compared sap flux measurements of water used by native species in contrast to saltcedar, and compared soil salinity, ground water depth and soil moisture across a gradient of 200?1500 m from the river's edge on a floodplain terrace at Cibola National Wildlife Refuge (CNWR). We found that the fraction of land covered (fc) with vegetation in 2005?2007 was similar to that occupied by native... Categories: Publication; Types: Citation, Journal Citation; Tags: EVI, Ecohydrology, MODIS, Pluchea, Populus, All tags... Prosopis, ground water, tamarisk, Fewer tags Hydrological Analysis of Greater Yellowstone Ecosystem Montane Meadow Condition using MODIS data Locating meadow study sitesMeadow centers as recorded in the ‘Copy of sitecords_areaelev from Caruthers thesis.xls’ file delivered by Debinski in November 2012 were matched to polygons as recorded in files ‘teton97map_area.shp’ and ‘gallatin97map_area.shp’ both also delivered by Debinski in November 2012.In cases where the meadow center did not fall within a meadow polygon, if there was a meadow polygon of the same meadow TYPE nearby (judgment was used here), the meadow center was matched with the meadow polygon of same meadow TYPE. In total, 29 of 30 Gallatin meadow sites and 21 of 25 Teton meadow sites were positively located.Identifying meadow pixels for analysisThe native MODIS 250-meter grid was reprojected... Categories: Data; Types: Citation; Tags: Greater Yellowstone Ecosystem, MODIS, NDVI, North Central CASC, Plants, All tags... Wildlife and Plants, biota, meadow, Fewer tags An analysis of montane meadow drying in the Greater Yellowstone Ecosystem using remotely sensed NDVI from the MODIS period of record (lsp metrics) Locating meadow study sitesMeadow centers as recorded in the ‘Copy of sitecords_areaelev from Caruthers thesis.xls’ file delivered by Debinski in November 2012 were matched to polygons as recorded in files ‘teton97map_area.shp’ and ‘gallatin97map_area.shp’ both also delivered by Debinski in November 2012.In cases where the meadow center did not fall within a meadow polygon, if there was a meadow polygon of the same meadow TYPE nearby (judgment was used here), the meadow center was matched with the meadow polygon of same meadow TYPE. In total, 29 of 30 Gallatin meadow sites and 21 of 25 Teton meadow sites were positively located.Identifying meadow pixels for analysisThe native MODIS 250-meter grid was reprojected... Categories: Data; Types: Citation; Tags: Greater Yellowstone Ecosystem, MODIS, MODIS NDVI, North Central CASC, Plants, All tags... Wildlife and Plants, biota, meadow, Fewer tags An analysis of montane meadow drying in the Greater Yellowstone Ecosystem using remotely sensed NDVI from the MODIS period of record (hq_nvdi) Locating meadow study sitesMeadow centers as recorded in the ‘Copy of sitecords_areaelev from Caruthers thesis.xls’ file delivered by Debinski in November 2012 were matched to polygons as recorded in files ‘teton97map_area.shp’ and ‘gallatin97map_area.shp’ both also delivered by Debinski in November 2012.In cases where the meadow center did not fall within a meadow polygon, if there was a meadow polygon of the same meadow TYPE nearby (judgment was used here), the meadow center was matched with the meadow polygon of same meadow TYPE. In total, 29 of 30 Gallatin meadow sites and 21 of 25 Teton meadow sites were positively located.Identifying meadow pixels for analysisThe native MODIS 250-meter grid was reprojected... Categories: Data; Types: Citation; Tags: Greater Yellowstone Ecosystem, MODIS, NDVI, North Central CASC, Plants, All tags... Wildlife and Plants, biota, meadow, Fewer tags Creating a topoclimatic daily air temperature dataset for the conterminous United States using homogenized station data and remotely sensed land skin temperature Abstract (from http://onlinelibrary.wiley.com/doi/10.1002/joc.4127/abstract): Gridded topoclimatic datasets are increasingly used to drive many ecological and hydrological models and assess climate change impacts. The use of such datasets is ubiquitous, but their inherent limitations are largely unknown or overlooked particularly in regard to spatial uncertainty and climate trends. To address these limitations, we present a statistical framework for producing a 30-arcsec (∼800-m) resolution gridded dataset of daily minimum and maximum temperature and related uncertainty from 1948 to 2012 for the conterminous United States. Like other datasets, we use weather station data and elevation-based predictors of temperature,... Categories: Publication; Types: Citation; Tags: Drought, Drought, Fire and Extreme Weather, Kriging, MODIS, North Central CASC, All tags... air temperature, homogenization, land skin temperature, Fewer tags Remote monitoring of tamarisk defoliation and evapotranspiration following saltcedar leaf beetle attack Tamarisk (Tamarix spp.) has invaded riparian ecosystems throughout the Western United States, including significant portions of riparian ecosystems within U.S. National Parks and Monuments. Recently, the saltcedar leaf beetle (Diorhabda elongata) was released as a tamarisk biocontrol agent. Although initial releases have been monitored, no comprehensive program is currently in place to monitor the rapid spread of Diorhabda that has resulted from numerous subsequent releases by county and state agencies. Long term monitoring of tamarisk defoliation and its impacts on habitat and water resources is needed. This study examines the potential for using higher spatial resolution Advanced Spaceborne Thermal Emission and... Categories: Publication; Types: Citation, Journal Citation; Tags: ASTER, Change detection, Colorado Plateau, Evapotransipration, Insect defoliation, All tags... MODIS, Remote Sensing of Environment, Fewer tags A comparison of MODIS and NOHRSC snow-cover products for simulating streamflow using the Snowmelt Runoff Model Remote sensing is an important source of snow-cover extent for input into the Snowmelt Runoff Model (SRM) and other snowmelt models. Since February 2000, daily global snow-cover maps have been produced from data collected by the Moderate Resolution Imaging Spectroradiometer (MODIS). The usefulness of this snow-cover product for streamflow prediction is assessed by comparing SRM simulated streamflow using the MODIS snow-cover product with streamflow simulated using snow maps from the National Operational Hydrologic Remote Sensing Center (NOHRSC). Simulations were conducted for two tributary watersheds of the Upper Rio Grande basin during the 2001 snowmelt season using representative SRM parameter values. Snow depletion... Categories: Publication; Types: Citation, Journal Citation; Tags: Hydrological Processes, MODIS, NOHRSC, Snowmelt Runoff Model, Upper Rio Grande, All tags... streamflow simulation, Fewer tags Spatial Patterns of Forest Characteristics in the Western United States Derived from Inventories In the western United States, forest ecosystems are subject to a variety of forcing mechanisms that drive dynamics, including climate change, land-use/land-cover change, atmospheric pollution, and disturbance. To understand the impacts of these stressors, it is crucial to develop assessments of forest properties to establish baselines, determine the extent of changes, and provide information to ecosystem modeling activities. Here we report on spatial patterns of characteristicsof forest ecosystems in the western United States, including area, stand age, forest type, and carbon stocks, and comparisons of these patterns with those from satellite imagery and simulation models. The USD A Forest Service collected ground-... Categories: Publication; Types: Citation, Journal Citation; Tags: Century model, Ecological Applications, FIA, MODIS, forest carbon stocks, All tags... forest cover, forest inventories, forest type, western United States, Fewer tags