Related by context. Frequent words. (Click for all words.) 61 beetle infestations 60 insect infestations 60 forest ecosystems 57 Invasive plants 57 fungal pathogen 57 alkaline soils 57 habitat fragmentation 57 woody vegetation 56 insect populations 55 oak hickory 55 aspen stands 55 beetle infestation 55 deciduous forests 55 cheatgrass 55 soil salinity 55 oak woodland 55 Phytophthora 54 periodic droughts 54 insect infestation 54 terrestrial ecosystems 54 nitrogen fixation 54 species extinctions 54 montane 54 forest fires 54 El Niño Southern Oscillation 54 owl habitat 53 parasitoids 53 overgrazing 53 drier summers 53 forbs 53 grassland habitat 53 prescribed burns 53 chestnut blight 53 mycorrhizal fungi 53 conifer forests 53 insect pests 53 mountain pine beetles 53 severe droughts 53 mixed conifer 53 leafhoppers 52 pollinating insects 52 herbicide resistant crops 52 ecosystems 52 prolonged droughts 52 sparse vegetation 52 lodgepole 52 acidic soils 52 Droughts 52 spotted owl habitat 52 Fungal 52 chytrid 52 lowland forests 52 hydrologic cycle 52 temperate forests 52 marbled murrelets 52 Bt toxin 52 Prescribed burns 52 Greater Yellowstone Ecosystem 51 desiccation 51 lodgepole pine 51 forests 51 warmer drier 51 riparian zones 51 aspen 51 boreal forests 51 Bark beetles 51 El Niños 51 bark beetles 51 Severe drought 51 vegetation 51 fungi 51 Soil erosion 51 Phytophthora ramorum 51 salvage logging 51 piñon 51 bark beetle infestation 51 forest canopies 51 catastrophic wildfires 51 Beaverhead Deerlodge National 51 glyphosate resistant 50 dieback 50 isoprene 50 peatland 50 glyphosate resistance 50 Ecology Letters 50 adelgids 50 warmer winters 50 seed germination 50 phytoplankton blooms 50 tent caterpillars 50 thawing permafrost 50 coniferous forests 50 apple scab 50 understory 50 subtropical regions 50 forest 50 wolf predation 50 Cerrado 50 mold fungi 50 forcings 50 floods droughts