Development of a Dispersal Model for Balsam Woolly Adelgid, Adelges piceae Ratzeburg (Hemiptera: Adelgidae), to Facilitate Landscape-Level Management Planning

Table 1

Predicted new BWA dispersal in validation site.

Distance from initial infestation^1 (km)	July wind; model found; (km^2)	August wind; model found; (km^2)	Combined wind; model found; (km^2)
0.3	18.96	44.02	52.89
0.6	17.61	34.23	36.23
1.25	29.51	39.79	41.47
2.5	29.36	48.42	46.32
5	37.88	50.87	52.57
Total found	133.31	217.33	229.48
Total BWA in validation	350.17	350.17	350.17
Total area in validation site	48,018	48,018	48,018
Percent accounted by dispersal model	38.07%	62.06%	65.53%

1Distance from initial infestation is the calculated minimum dispersal distance found for all initial infestations tested.