This folder contains ASCII text raster files describing the pine density model and yearly aerial detection survey (ADS) data for three study areas: Sawtooth (central Idaho, USA), Chelan (north-central Washington, USA) and Northern Colorado (USA). These data supported analyses presented in
Powell, J.A., M.J. Garlick, B.J. Bentz and N.A. Friedenberg. (2017) Differential Dispersal and the Allee Effect Create Power-Law Behavior: Distribution of Spot Infestations During Mountain Pine Beetle Outbreaks. Journal of Animal Ecology.
Each raster is at 30m resolution, and each pixel is a density in a space-separated ascii file. The top five rows of each file are commented using % (Matlab comment) and contain: number of columns in the raster, number of rows in the raster, UTM for horizontal location of lower left corner UTM for vertical location of lower left corner NODATA value
Separate readme files are in each subdirectory. The zipped file contains:
1 PDF: Crabb_RP_93WWW.pdf (Crabb et al. 2012)
1 general readme: MPB_Spot_ASCIIs.txt
Chelan subdirectory: 20 ADS ASCII tab-separated rasters (2401 x 2067, 9.77MB each) of tree per hectare impact (1990-2009) + 1 pine cover raster (ca 2001) + 1 readme.txt file
No. Colorado subdirectory: 10 ADS ASCII tab-separated rasters (9259 x 8924, 160MB each) of tree per hectare impact (2001-10) + 1 pine cover raster (ca 2003) + 1 readme.txt file
Sawtooth subdirectory: 10 ADS ASCII tab-separated rasters (2076 x 1437, 22.9MB each) of tree per acre impact (1995-2004) + 1 pine cover raster (ca 2001) + 1 readme.txt file
USDA Western Wildland Threat Assessment Center
- Award number: 09-JV-11221633-240
- Award title: Landscape-Scale Enhanced Mountain Pine Beetle and Climate Change Threat Assessment.
USDA, Cooperative State Research, Education, and Extension Service (CREES)
- Award number: SBIR 2009-01116
- Award title: Forest Pest Risk in Dynamic Landscapes
Aerial Detection Survey data depicting MPB impact as polygons was converted into ASCII rasters with 30 meter pixels. Pine cover density data from a variety of sources was also projected onto 30 meter scales. Data processing is described in detail in:
Crabb, B.A.; Powell, J.A.; Bentz, B.J. (2012) Development and assessment of 30-m pine density maps for landscape-level modeling of mountain pine beetle dynamics. Res. Pap. RMRS-RP-96WWW. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 43 p. (included in archive).
Dendroctonus ponderosae Hopkins
48.10246, -120.26881 40.40913, -105.83095 44.10315, -114.88954
MPB - mountain pine beetle
ADS - aerial detection survey
TPH - trees per hectare
TPA - trees per acre
FIA - Forest Inventory Analysis
Ecology and Evolutionary Biology
This work is licensed under a Creative Commons Attribution 4.0 License.
Powell, James A., "MPB Spot Infestation Data" (2017). Browse all Datasets. Paper 24.
FilesPowell_README (6 kB)