White Pine Blister Rust Project: maps

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NOTE: Some PDF viewers may display incorrect colors on the screen, but printouts should be correctly colored. For correct colors see WWW or PostScript versions of the final report.

map1.pdf

93k byte Map 1, PDF file, In addition to Van Arsdel's original hazard zones, this map shows an interpolated measure of blister rust presence. Sites from the Phase-II data without rust were scored as -1, sites with rust as +1. So areas were Phase-II sites where rust presence or absence seemed equally likely would tend to cancel out and score zero. Only areas (defined by a 30 km radius) where most sites had rust present will score significantly above zero, hence the read hotspots. Compare with Van Arsdel's original hazard zones, and the new Map 6.

map2.pdf

390k byte Map 2, PDF file, Here is an example of one of the 22 spatially explicit variables used to create Map 6. This is the electivity score (x 100) based on distance from small water bodies (<100 Ha).

map3.pdf

155k byte Map 3, PDF file, Another example of a single electivity score, based on August Minimum temperature.

map4.pdf

160k byte Map 4, PDF file, Another example of a single electivity score, based on elevation.

map5.pdf

511k byte Map 5, PDF file, The sum of electivity scores for all 22 variables, across the landscape.

map6.pdf

276k byte Map 6, PDF file, The values from Map 5, reclassified on the basis of certainty described in the electivity section, i.e. such that Phase-II sites in the red zone are 47% likely to contain blister rust, compared to 16% in the orange and 8% in the green.