Nagler, Pamela L; Pearlstein, Susanna; Glenn, Edward P.; Brown, Timothy; Bateman, Heather L.; Bean, Daniel W; Hultine, Kevin R
We measured the rate of dispersal of saltcedar leaf beetles (Diorhabda carinulata), a defoliating insect released on western rivers to control saltcedar shrubs (Tamarix spp.), on a 63km reach of the Virgin River, U.S. Dispersal was measured by satellite imagery, ground surveys and phenocams. Pixels from the Moderate Resolution Imaging Spectrometer (MODIS) sensors on the Terra satellite showed a sharp drop in NDVI in midsummer followed by recovery, correlated with defoliation events as revealed...[Show more]
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