Related by context. Frequent words. (Click for all words.) 63 mountain pine beetles 61 lodgepole pines 59 pine beetle infestation 59 lodgepole pine 56 beetle infestation 56 boreal forests 56 pine beetles 55 pine beetle 55 aspen 54 mountain pine beetle 53 Mountain Pine Beetle 52 woodland caribou 52 boreal forest 52 forests 50 aspen trees 50 snowpacks 50 sequoias 50 grizzly bears 50 ponderosa pines 49 jack pine 49 boreal 49 Forests 49 clearcuts 49 aspens 48 honeybee colonies 48 bark beetles 48 pine forests 48 timber harvest 47 caribou herd 47 Yellowstone ecosystem 47 grizzlies 47 caribou herds 47 forest ecosystems 47 British Columbia 47 hemlock trees 47 warmer winters 47 forest fires 46 bark beetle 46 gypsy moth caterpillars 46 chinooks 46 Boreal Forest 46 forested 46 forest 46 adelgid 46 hardwood forests 45 timber harvests 45 hemlocks 45 sawlogs 45 oak woodlands 45 bark beetle infestation 45 virgin forests 45 conifers 45 Grizzly bears 44 beetle 44 amphibian species 44 Infestations 44 Douglas firs 44 Douglas fir 44 giant sequoias 44 pine plantations 44 hotter summers 44 ash trees 44 clearcutting 44 Chilcotin 44 hibernating bats 44 Snowpack 44 beetles 44 sugar beet crop 44 lynx habitat 43 terrestrial ecosystems 43 defoliated 43 spotted owls 43 leafy spurge 43 catastrophic wildfires 43 spruce trees 43 hardwood trees 43 Wildfire burns 43 Douglas Fir 43 Severe drought 43 grassland birds 43 forestlands 43 deer herds 43 bull trout 43 elk herd 43 milder winters 43 Sudden Oak 42 glaciers 42 almond crop 42 gypsy moth 42 owl habitat 42 emerald ash borers 42 timber harvesting 42 warmer drier 42 defoliation 42 marmots 42 forestland 42 rangelands 42 snowpack 42 marbled murrelet 42 insect infestations 42 lichen