Northern tamarisk beetle impact and classification maps, Grand Canyon National Park, Arizona
Data for journal manuscript: Monitoring Tamarix Changes Using WorldView-2 Satellite Imagery in Grand Canyon National Park, Arizona
Dates
- Publication Date
- 2021-03-16
- Time Period
- 2019-05-18
- Time Period
- 2019-08-02
Citation
Bransky, N.D., Sankey, T.T., and Sankey, J.B., 2021, Northern tamarisk beetle impact and classification maps, Grand Canyon National Park, Arizona: U.S. Geological Survey data release, https://doi.org/10.5066/P9WUMM1P.
Summary
These data are satellite image-derived, classification maps of tamarisk (Tamarisk spp.) along the Colorado River in Grand Canyon National Park from river km 315 to 363, approximately from Parashant Canyon to Diamond Creek tributaries. The classification maps are published in TIF raster format. Two maps are published: 1) a classification of healthy, defoliated, and tamarisk canopy dieback from the tamarisk beetle (Diorhabda carinulata) in May 2019, and 2 a classification of healthy and beetle-impacted tamarisk in August 2019. Tamarisk was mapped using a Spectral Angle Mapper supervised classification derived from 2 m resolution, multispectral WorldView-2 imagery, with an overall accuracy of 80.0% in May 2019 and 83.1% in August 2019. [...]
Summary
Contacts
Attached Files
Click on title to download individual files attached to this item.
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TB_Impact_Classification_Map_Metadata.xml
Original FGDC Metadata |
View |
20.17 KB | application/fgdc+xml |
| Data_Metadata.zip | 260.24 KB | application/zip | |
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Fig 2.jpg
“Fig 2. (A) defoliated tamarisk; (B) ~90% tamarisk canopy dieback” |
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209.63 KB | image/jpeg |
Purpose
These data were developed to help quantify the area of tamarisk impacted by the tamarisk beetle in Grand Canyon National Park. They represent the extent of healthy and beetle-impacted tamarisk within the study area as of summer, 2019. These data can be used for GIS analyses for researching, monitoring, or management of tamarisk in the Grand Canyon. Future studies could use these maps as a baseline or part of a timeseries for detecting changes in impacted tamarisk from the tamarisk beetle in Grand Canyon.
Rights
The authors of these data request that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
Preview Image
Fig 2. (A) defoliated tamarisk; (B) ~90% tamarisk canopy dieback
Map
Communities
- USGS Data Release Products
- USGS Southwest Biological Science Center (SBSC)