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Trend Lines for Beetle GrowthTrend Lines for Beetle GrowthMountain Pine Beetle & IPS Beetle Tree Mortality, Black Hills of South Dakota
-50,000
0
50,000
100,000
150,000
200,000
250,000
300,000
1997 1998 1999 2000 2001 2002 2003 2004
Aerial Damage Survey Year
Tree
s Killed
, Sou
th D
akot
a
Mountain Pine Beetle IPS Beetle MPB Trendline IPS Trendline