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White fir stands killed by tussock moth...70-mm. color photography aids detectionAuthor(s): Steven L. Wert; Boyd E. Wickman
Source: Res. Note PSW-RN-168. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 5 p
Publication Series: Research Note (RN)
Station: Pacific Southwest Research Station
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DescriptionThe use of large-scale 70 mm. aerial photography proved to be an effective technique for detecting trees in white fir stands killed by Douglas-fir tussock moth in northeastern California. Correlations between ground and photo estimates of dead trees were high. But correlations between such estimates of lesser degrees of tree damage--thin tops and topkill--were much lower; increased training of interpreters could improve these correlations.
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CitationWert, Steven L.; Wickman, Boyd E. 1968. White fir stands killed by tussock moth...70-mm. color photography aids detection. Res. Note PSW-RN-168. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 5 p.
KeywordsDouglas-fir tussock moth, Hemerocampa pseudotsugata, white fir, Abies concolor, aerial photography, photo interpretation, photogrammetry, remote sensing, insect damage, defoliation damage, California
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