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

Figure 4

July wind dispersal model showing BWA (yellow crosshatched = BWA infestations found 12 to 16 years after initial survey, blue represents area unlikely to have subalpine fir, and background layer is elevation). Location shown in Figure 1.