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This dataset depicts relative erosion rate derived for all land draining above the Mesoamerican reef. It is a function of slope, land cover type, precipitation and soil type. The indicators developed by the Reefs at Risk in the Caribbean project enable detailed comparative analyses of threats on many scales. The Reefs at Risk indicators are a simplification of human activities and complex natural processes. This data set was derived at the World Resources Institute for input to the sedimentation and pollution from watershed based sources threat analysis. Agriculture, though important to economic development and food security, is a source of increased sediment, nutrient, and pesticide runoff. Threats from sedimentation...
Using basins derived from a hydrologically-corrected 30m resolution DEM as a unit for summary statistics, we provide a series of indicators focused on land-based sources of threat within the US Virgin Islands and Puerto Rico. This includes indicators of a) the relative vulnerability of the land to erosion (based on slope, precipitation and soil erodibility); b) the relative erosion potential (REP) of the land, based on the relative vulnerability of the land, coupled with the current land cover type; c) the sediment delivery rate for each basin (percentage of eroded which reaches the river mouth); d) estimated sediment delivery for the basin, given current land use;
Agriculture, though important to economic development and food security, is a source of increased sediment, nutrient, and pesticide runoff. Threats from sedimentation and pollution from inland sources were modeled for over 3,000 watersheds discharging into the Caribbean.
Agriculture, though important to economic development and food security, is a source of increased sediment, nutrient, and pesticide runoff. Threats from sedimentation and pollution from inland sources were modeled for about 150 watersheds discharging along the Mesoamerican reef, and associated sediment plumes estimated.
This dataset shows summary statistics for relative erosion rate (REP), river flow, and sediment delivery estimated for each of over 150 watersheds draining along the Mesoamerican Reef.
This dataset depicts relative sediment delivery at the river mouth for each of over 3,000 watersheds draining into the Caribbean Sea and Gulf of Mexico.
Using watersheds derived from a hydrologically-corrected 30m resolution DEM as a unit for summary statistics, we provide a series of indicators focused on land-based sources of threat within the US Virgin Islands and Puerto Rico. This includes indicators of a) the relative vulnerability of the land to erosion (based on slope, precipitation and soil erodibility); b) the relative erosion potential (REP) of the land, based on the relative vulnerability of the land, coupled with the current land cover type; c) the sediment delivery rate for each basin (percentage of eroded which reaches the river mouth); d) estimated sediment delivery for the basin, given current land use;
Agriculture, though important to economic development and food security, is a source of increased sediment, nutrient, and pesticide runoff. Threats from sedimentation and pollution from inland sources were modeled for over 3,000 watersheds discharging into the Caribbean.
An indicator of relative sediment delivery at the river mouth for each of over 3,000 watersheds draining into the Caribbean Sea and Gulf of Mexico.
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Alabama (AL),
Caribbean,
Florida (FL),
Gulf of Mexico,
Gulf of Mexico,
Assessment of temporal trends in vegetation greenness and related influences aids understanding of recent changes in terrestrial ecosystems and feedbacks from weather, climate, and environment. We analyzed 1-km normalized difference vegetation index (NDVI) time series data (1989–2016) derived from the Advanced Very High Resolution Radiometer (AVHRR) and developed growing-season time-integrated NDVI (GS-TIN) for estimating seasonal vegetation activity across stable natural land cover in the conterminous United States (CONUS). After removing areas from analysis that had experienced land-cover conversion or modification, we conducted a monotonic trend analysis on the GS-TIN time series and found that significant positive...
Categories: Publication;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Climate variability,
Regression analysis,
Remote Sensing,
Satellite observations,
Temperature,
An indicator of relative sediment delivery at the river mouth for each of over 3,000 watersheds draining into the Caribbean Sea and Gulf of Mexico.
Summary statistics for relative erosion rate (REP), river flow, and sediment delivery estimated for each of over 3,000 watersheds draining into the Caribbean Sea and Gulf of Mexico. This dataset is a combination of the region wide 1 km analysis and the higher resolution 270 m analysis for the islands of the eastern caribbean.
Using basins derived from a hydrologically-corrected 30m resolution DEM as a unit for summary statistics, we provide a series of indicators focused on land-based sources of threat within the USVI. This includes indicators of a) the relative vulnerability of the land to erosion (based on slope, precipitation and soil erodibility); b) the relative erosion potential (REP) of the land, based on the relative vulnerability of the land, coupled with the current land cover type; c) the sediment delivery rate for each basin (percentage of eroded which reaches the river mouth); d) estimated sediment delivery for the basin, given current land use; e) the road density within the basin, and f) indicators of how erosion prone...
Using mapped watersheds as a unit for summary statistics, we provide a series of indicators focused on land-based sources of threat within the US Virgin Islands. This includes indicators of a) the relative vulnerability of the land to erosion (based on slope, precipitation and soil erodibility); b) the relative erosion potential (REP) of the land, based on the relative vulnerability of the land, coupled with the current land cover type; c) the sediment delivery rate for each basin (percentage of eroded which reaches the river mouth); d) estimated sediment delivery for the basin, given current land use; e) the road density within the basin, and f) indicators of how erosion prone areas with roads might be (average...
For areas with roads, we have developed a simple indicator of the erosivity of the land based on physical factors of the location (slope, precipitation, and a soil characteristic called K-factor, which reflects the erodibility of the given soil type.) This indicator provides a rough indication of the relative erosion that might be resulting from road construction and runoff from roads in the range of locations on the US Virgin Islands. It identifies the roads likely to be contributing the most erosion to the watershed.
This dataset shows summary statistics for relative erosion rate (REP), river flow, and sediment delivery estimated for each of over 3,000 watersheds draining into the Caribbean Sea and Gulf of Mexico. This dataset is a combination of the region wide 1 km analysis and the higher resolution 270 m analysis for the islands of the eastern Caribbean.
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