Year
ET (mm/day)
0
2
4
6
8
2011
2010
2009
2008
2007
2012
FIGURE 5.4 Impact of leaf beetles on Tamarix ET estimated by MODIS EVI on Virgin River,
NV. Data points are the mean and standard error of six sites on the river; solid line is potential ET.
Beetles first arrived in 2010 and defoliation and reduction in ET were widespread by 2012.
FIGURE 5.5 Comparison of Landsat and MODIS Tamarix ET estimates on Humbolt River,
NV, before (2002) and after (2004) arrival of leaf beetles.
COMBINING PHENOCAMS, LANDSAT, AND MODIS IMAGERY
97
ET (mm/day)
0
2
4
6
8
2011
2010
2009
2008
2007
2012
FIGURE 5.4 Impact of leaf beetles on Tamarix ET estimated by MODIS EVI on Virgin River,
NV. Data points are the mean and standard error of six sites on the river; solid line is potential ET.
Beetles first arrived in 2010 and defoliation and reduction in ET were widespread by 2012.
FIGURE 5.5 Comparison of Landsat and MODIS Tamarix ET estimates on Humbolt River,
NV, before (2002) and after (2004) arrival of leaf beetles.
COMBINING PHENOCAMS, LANDSAT, AND MODIS IMAGERY
97