MPB Spot Infestation Data

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