Identifying Subalpine Fir (<i>Abies lasiocarpa</i>) Attacked by  the Balsam Woolly Adelgid (<i>Adelges piceae</i>) Using Spectral Measurements of the Foliage

<table>Difference in the mean spectral response (solid line) of subalpine fir trees that were not infested or infested with the balsam woolly adelgid.   Dashed lines represent the 95% confidence intervals around the mean.  Dotted vertical lines represent the narrow wavebands selected for use in the stepwise discriminant analysis.</table>

International Journal of Forestry Research

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Figure 2

Figure 2: Identifying Subalpine Fir (<i>Abies lasiocarpa</i>) Attacked by  the Balsam Woolly Adelgid (<i>Adelges piceae</i>) Using Spectral Measurements of the Foliage 

Figure 2 | Identifying Subalpine Fir (Abies lasiocarpa) Attacked by  the Balsam Woolly Adelgid (Adelges piceae) Using Spectral Measurements of the Foliage 