Related by context. Frequent words. (Click for all words.) 69 bark beetle infestation 67 beetle infestation 64 catastrophic wildfires 64 mountain pine beetles 64 pine beetle infestation 64 pine beetles 64 bark beetles 62 bark beetle 61 insect infestations 59 wildfires 59 forest fires 59 pine beetle 58 lodgepole 57 Prescribed burns 56 buffelgrass 56 lodgepole pine 56 mountain pine beetle 56 cheatgrass 55 wildland fires 55 prolonged drought 55 lodgepole pines 55 aspen trees 54 aspen 53 Sudden Oak 53 Warming temperatures 53 winterkill 52 species extinctions 52 veld fires 52 habitat fragmentation 52 saturated soils 52 warmer drier 52 wildland urban interface 51 overgrazing 51 ponderosa pines 51 saltcedar 51 insect infestation 51 salvage logging 51 prolonged droughts 51 Gypsy moths 51 invasive weeds 51 oak woodlands 51 lynx habitat 51 Trans Pecos 51 frequent droughts 51 grassfires 51 tinder dry conditions 50 forest thinning 50 Severe drought 50 Phytophthora 50 tinder dry 50 knapweed 50 melting snowpack 50 insect pests 50 fireweed 50 nonnative plants 50 rangeland 50 salt cedar 50 warmer winters 50 ridgetops 50 forest ecosystems 50 Angora Fire 50 woody plants 50 Mountain Pine Beetle 50 temperate forests 50 nutrient runoff 49 vegetation 49 prescribed burns 49 wildfire 49 oak woodland 49 oak wilt 49 fungal disease 49 blowdown 49 droughts 49 clearcuts 49 soil erosion 49 Feral hogs 49 wildland firefighters 49 anthracnose 49 insect populations 49 dieback 49 aspens 49 spotted knapweed 49 adelgid 49 Yellowstone ecosystem 49 overgrown forests 48 giant sequoias 48 Droughts 48 wildland fire 48 leafy spurge 48 perennial grasses 48 rangelands 48 whitebark pine 48 grassland birds 48 freeze thaw cycles 48 prairie grasses 48 forests 48 Controlled burns 48 Wildfires 48 wildland 48 forbs 48 thawing permafrost