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This data release presents observations of riparian vegetation, topography, sediment quality, and river corridor geomorphology in four river reaches of the Lower Virgin River extending downstream 62 river kilometers (rkm) from near the town of Littlefield (AZ) and the Arizona-Nevada border at rkm 119. Methods included field observations and analysis of remotely-sensed data before (2010) and after (2011-2012) a 40-year return period flood (December 2010, at the gaging station “Virgin River near Littlefield” (USGS gage #09415000)). The data release includes four .csv files related to field observations: UTM coordinates of field transect locations; vegetation and geomorphology; species codes; and sediment quality....
Tags: Arizona,
Nevada,
Tamarix,
USGS Science Data Catalog (SDC),
biota, All tags...
braided channel,
channel widening,
disturbance,
large flood,
resilience, Fewer tags
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Active channel as defined by remote sensing before (2010 and after (2011) a 40 year return period flood (December 2010) within the lower Virgin River, Nevada.
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Arizona,
Nevada,
Virgin River,
active channel,
biota, All tags...
lidar,
orthophotography,
remote sensing, Fewer tags
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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...
Tags: Arizona,
California,
Colorado River Delta,
EVI,
EVI2, All tags...
Enhanced Vegetation Index,
Mexico,
Morelos Dam,
NDVI,
Normalized Difference Vegetation Index,
USGS Science Data Catalog (SDC),
Yuma,
avian use circles,
avian use data,
biota,
bird abundance,
bird diversity,
bird richness,
bird species,
bird-vegetation relationships,
birds,
circular plots,
data release,
datasets,
evapotranspiration,
land use and land cover,
marshland habitat,
plot sampling,
relative abundance analysis,
riparian,
riparian habitat,
sampling sites,
time series datasets,
two-band EVI,
vegetation,
vegetation greenness,
vegetation index,
water use,
wetland ecosystems, Fewer tags
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Active channel as defined by remote sensing before (2010) a 40 year return period flood (December 2010) within the lower Virgin River, Nevada.
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Arizona,
Nevada,
Virgin River,
active channel,
biota, All tags...
lidar,
orthophotography,
remote sensing, Fewer tags
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The data release presents observations of riparian vegetation, topography, and ground cover in two river reaches of the Upper Colorado River within a river segment extending 208 river kilometers (rkm), from near the Colorado/Utah border to the confluence of the Green River. Methods included field observations and analysis of the plant community five times over eight years in the fall of 2010, 2012, 2013, 2015 and 2017, encompassing a second cycle of biocontrol-induced dieback of invasive Tamarix spp. shrubs. The data release includes four .csv files related to field observations: UTM coordinates of field transects; vegetation, topography and ground surface information at the pinpoint level and at the transect level;...
Categories: Data,
Data Release - Revised;
Tags: Moab,
Salix,
Tamarix,
USGS Science Data Catalog (SDC),
Upper Colorado River, All tags...
Utah,
biocontrol,
biota,
defoliating beetle,
riparian plant community,
saltcedar, Fewer tags
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