Related by context. Frequent words. (Click for all words.) 57 beetle infestations 56 Gypsy moths 55 chestnut blight 52 aspen stands 51 Bark beetles 51 invasive insect 51 amphibian populations 51 bark beetles 51 defoliating 50 adelgid 50 beetle infestation 50 chytrid fungus 49 mountain pine beetles 49 bark beetle infestation 49 Emerald ash borer 49 fungal disease 48 herbicide resistant crops 48 hickories 48 adelgids 48 spotted knapweed 48 leafhoppers 48 hemlock trees 48 aspen trees 48 Phytophthora ramorum 48 Severe drought 48 beetle epidemic 48 lodgepole 48 piñon 47 chytrid 47 Invasive plants 47 Sudden Oak 47 honeybee colonies 47 lodgepole pine 46 bark beetle 46 fungal pathogen 46 deciduous forests 46 ponderosa pines 46 hemlocks 46 bird migrations 46 ash borers 46 beeches 46 White Nose Syndrome 46 tick borne 46 hemlock woolly adelgid 46 mixed conifer 46 cheatgrass 45 pine beetle infestation 45 birches 45 voracious eaters 45 ponderosa 45 aspen 45 defoliate 45 sparse vegetation 45 Infestations 45 tent caterpillars 45 flea beetles 44 Phytophthora 44 pine beetle epidemic 44 aspens 44 species extinctions 44 peeling bark 44 European corn borer 44 multiflora rose 44 serviceberry 44 knapweed 44 brushland 44 soybean aphid 44 jack pine 44 pine beetles 44 sea lampreys 44 spruce fir 44 fireweed 43 lodgepole pines 43 flowering dogwood 43 conifer trees 43 beetles 43 fungus 43 overhunting 43 loblolly pines 43 woody plants 43 honey bee colonies 43 hackberry 43 emerald ash borers 43 junipers 43 cypress forests 43 dieback 43 horseweed 43 potato blight 43 mealy bugs 43 gypsy moth caterpillars 43 oak wilt 43 woody vegetation 43 catastrophic wildfires 43 Norway maples 43 apple scab 43 understory 43 Stink bugs 43 Chronic wasting disease 43 cankerworms 43 raccoon rabies 43 insect populations