Related by context. Frequent words. (Click for all words.) 62 overhunting 60 overharvesting 57 overharvest 55 overfishing pollution 55 overharvested 55 habitat degradation 54 Soil erosion 54 caribou populations 53 Overfishing 53 rampant deforestation 53 subsistence hunters 52 Yellowstone cutthroat trout 52 murrelet 52 chytridiomycosis 52 caribou herd 52 chestnut blight 51 seabird populations 51 rampant poaching 51 yellow legged frogs 51 wolf predation 51 sage grouse populations 51 vaquita 51 invasive insect 51 Melting glaciers 50 Sea otters 50 overexploitation 50 habitat fragmentation 50 sagebrush habitat 50 grassland habitat 50 parasitic mites 50 voracious eaters 50 overgrazing 50 lowland forests 50 threatened delta smelt 49 marbled murrelets 49 beetle infestations 49 soil salinity 49 elk bison 49 eiders 49 foraging habitat 49 amphibian populations 49 Severe drought 49 aspen stands 48 toxic algae blooms 48 northern spotted owls 48 Predation 48 insecticide DDT 48 underwater grasses 48 migratory bird populations 48 amphipods 48 bee populations 48 chytrid 48 Alaska Natives 48 bowhead whale 47 snowy plovers 47 Yellowstone ecosystem 47 Cook Inlet belugas 47 harmful algae blooms 47 Bark beetles 47 Aleuts 47 subsistence hunting 47 Tibetan antelopes 47 Feral hogs 47 predation 47 ciguatera 47 deciduous forests 47 voracious predators 47 honeybee population 47 marbled murrelet 47 waterfowl populations 47 seagrasses 46 overfishing 46 Infestations 46 caribou herds 46 bee pollination 46 federally endangered 46 Gypsy moths 46 elk calves 46 red legged frogs 46 Mule deer 46 nesting habitat 46 shearwater 46 milder winters 46 herbivory 46 snowshoe hares 46 species 46 federally endangered species 46 golden plover 46 keystone species 46 Bycatch 46 severe droughts 46 migratory shorebirds 46 beluga sturgeon 46 Warming temperatures 46 bluebills 45 refugia 45 aquatic habitats 45 terrestrial ecosystems 45 Illegal logging 45 tent caterpillars 45 varroa mite