Filters: Tags: Greenness (X) > partyWithName: Ecosystems (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Michael C Duniway U.S. Geological Survey - ScienceBase Pamela L Nagler Southwest Biological Science Center David L Hoover Christopher J Jarchow U.S. Geological Survey Tag Types Theme (2) USGS Scientific Topic Keyword (2) Place (2) Harvest Set (2) Tag Schemes None (2) USGS Thesaurus (2) Geographic Names Information System (GNIS) (2) USGS Biocomplexity Thesaurus (1) ISO 19115 Topic Categories (2) USGS Metadata Identifier (1) View Results as: JSON ATOM CSV

Enhanced Vegetation Index (EVI) parameter data products from Landsat 5, Landsat 8 MODIS and the Visible Infrared Imaging Radiometer Suite (VIIRS), Colorado River Delta, Mexico These data are a compilation of four mask layers (regions), and enhanced vegetation indices calculated from airborne or satellite imagery. The mask layers were used created to extract satellite EVI data from the four airborne or satellite imagery datasets. The Enhanced Vegetation Index (EVI) is a key Earth science parameter used to assess vegetation, originally developed and calibrated for the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Terra and Aqua satellites. With the impending decommissioning of the MODIS sensors by the year 2020/2022, alternative platforms will need to be used to estimate EVI. These data were created to compare Landsat 5 (2000–2011), 8 (2013–2016) and the Visible Infrared... Tags: Arizona, California, Colorado River, Colorado River Delta, EVI, All tags... Ecology, Environmental Health, Geography, Information Sciences, Landsat images, MODIS, Mexico, Remote Sensing, USGS Science Data Catalog (SDC), VIIRS, biota, enhanced vegetation index, greenness, imageryBaseMapsEarthCover, moderate resolution imaging spectroradiometer, multispectral imaging, remote sensing, visible infrared imaging radiometer suite, Fewer tags Precipitation, soil moisture, and vegetation data from 36 experimental plots in southeastern Utah, near Canyonlands National Park (2015 - 2018) These data were compiled for a study that investigated the effects of drought seasonality and plant community composition on two dominant perennial grasses, Achnatherum hymenoides (C3 photosynthesis), and Pleuraphis jamesii (C4 photosynthesis), in a dryland ecosystem. In 2015 USGS Ecologists recorded vegetation and soil moisture data in 36 experimental plots which manipulated precipitation in two plant community types. The experiment consisted of three precipitation treatments: control (ambient precipitation), cool-season drought (-66% ambient precipitation November-April), and warm-season drought (-66% ambient precipitation May-October), applied in two plant communities (perennial grasses with or without a large... Tags: Achnatherum hymenoides, Botany, C3 photosynthesis, C4 photosynthesis, Canyonlands National Park, All tags... Climatology, Colorado Plateau, Ecology, Geography, Information Sciences, Pleuraphis jamesii, Soil Sciences, USGS Science Data Catalog (SDC), Utah, ambient precipitation, biogeography, biological control, biota, biota605e5ec4d34ec5fa65ee7973, control treatment, cool-season drought treatment, droughts, dryland ecosystem, ecology, experimental design, experimental plot, field experiments, field inventory and monitoring, greenness, perennial grasses, phenology, photosynthesis, plant biomass, plant community types, plants, plot sampling, plot treatments, plots, precipitation (atmospheric), precipitation treatment timing, precipitation treatments, rain, research, seasonal drought, soil moisture, soil moisture data, southeastern Utah, terrestrial ecosystems, vegetation, vegetation data, warm-season drought treatment, Fewer tags