Filters: Tags: vegetation index (X)
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These data were compiled to understand the effects of riparian vegetation health on local abundance and species diversity of land birds. The primary objective of our study was to to determine the effects of riparian restoration on birds in the Colorado River delta. These tabular data represent vegetation indices and evapotranspiration (ET) data at varying spatial scales that correspond to avian use circles of 100 to 2000 meters. Three vegetation reflectance indices (VIs): NDVI, EVI, and EVI2 were obtained from Landsat imagery with a biweekly temporal frequency, and covering the entire period of bird surveys (2002-2020). The Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) and two-band...
This vector dataset consists of 2 polygon shapefiles representing the groundwater discharge areas (GDA) and evapotranspiration (ET) units for the Amargosa Wild and Scenic River and contributing areas. GDAs were delineated by visual interpretation and subdivided into ET units of moist soil, open water, and vegetated areas.
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Amargosa River,
California,
California Valley,
Chicago Valley,
ET unit,
Map showing the area proposed for ShoreZone mapping (in red) with FY13 funds from the Western Alaska Landscape Conservation Cooperative funds; the coastline with existing ShoreZone imagery and mapped data in blue; and the coastline with existing ShoreZone imagery that remains to be mapped in green. This imagery was collected in either 2006 (Bristol Bay survey July 19-23, 2006) or 2011 (Southwest Alaska/Alaska Peninsula May 16-21, 2011).This project provided systematic coastal habitat imagery and mapping for the Alaska Peninsula shoreline following the Alaska ShoreZone Mapping Protocol and made these products web-accessible. The completed mapping product is available on the ShoreZone website in a searchable dataset....
Categories: Data;
Tags: COASTAL AREAS,
COASTAL AREAS,
COASTAL HABITAT,
COASTAL HABITAT,
COASTAL LANDFORMS,
This raster dataset represents normalized difference vegetation index (NDVI) values calculated from National Agricultural Imagery Program (NAIP) spectral data for the vegetated evapotranspiration (ET) unit in the groundwater discharge areas for the Amargosa Wild and Scenic River and contributing areas. Estimated groundwater discharge by ET also is presented.
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Amargosa River,
California,
California Valley,
Chicago Valley,
ET unit,
These data were created as part of a hydrologic study to characterize groundwater budgets and water quality in the Diamond Valley Flow System (DVFS), central Nevada. This dataset represents the mean Enhanced Vegetation Index (EVI) of two Landsat 5 Thematic Mapper scenes from the summer of 2010 in the DVFS. The data were used to evaluate and estimate groundwater discharge by evapotranspiration by relating the mean of EVI calculated from July 24 and August 25, 2010 Landsat scenes to evapotranspiration measured at 4 eddy-covariance sites located in phreatophytic vegetation of varying types and densities in Kobeh Valley, Nevada. Evapotranspiration was extrapolated for all valleys in the study area using the relation...
This data release supports U.S. Geological Survey Scientific Investigations Report 2023-5106, Groundwater Discharge by Evapotranspiration from the Amargosa Wild and Scenic River and Contributing Areas, Inyo and San Bernardino Counties, California. Geospatial datasets presented are two polygon shapefiles representing the groundwater discharge areas and evapotranspiration units for the Amargosa Wild and Scenic River and contributing areas, and a raster dataset representing the vegetation index corresponding to the vegetated evapotranspiration unit.
This project provided systematic coastal habitat imagery and mapping for the Alaska Peninsula shoreline following the Alaska ShoreZone Mapping Protocol and made these products web-accessible. The completed mapping product is available on the ShoreZone website in a searchable dataset. Individuals and communities can query coastal habitat information for use in coastal zone planning. Mapped features include features such as shore types and morphology (e.g., dunes, beaches, and estuaries), intertidal biota (e.g., salt marshes, eelgrass beds, kelp beds) and man-made features (e.g., seawalls, docks). In addition to the dataset, the web-accessible, high resolution low-tide imagery (video and photos) complement the mapped...
Categories: Data;
Tags: COASTAL AREAS,
COASTAL AREAS,
COASTAL HABITAT,
COASTAL HABITAT,
COASTAL LANDFORMS,
This project provided systematic coastal habitat imagery and mapping for the Alaska Peninsula shoreline following the Alaska ShoreZone Mapping Protocol and made these products web-accessible. The completed mapping product is available on the ShoreZone website in a searchable dataset. Individuals and communities can query coastal habitat information for use in coastal zone planning. Mapped features include features such as shore types and morphology (e.g., dunes, beaches, and estuaries), intertidal biota (e.g., salt marshes, eelgrass beds, kelp beds) and man-made features (e.g., seawalls, docks). In addition to the dataset, the web-accessible, high resolution low-tide imagery (video and photos) complement the mapped...
Categories: Data;
Tags: COASTAL AREAS,
COASTAL AREAS,
COASTAL HABITAT,
COASTAL HABITAT,
COASTAL LANDFORMS,
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