Related by context. Frequent words. (Click for all words.) 60 pikas 49 amphibian species 49 overhunting 48 streamflows 48 Steller sea lions 47 snowpacks 47 bee populations 47 species 47 pika 46 mountain pine beetles 46 sage grouse 46 elk herds 46 wolverines 46 mountain glaciers 46 subspecies 46 California condors 46 megafauna 45 woodland caribou 45 habitat degradation 45 biodiversity hotspots 45 penguin species 45 whitebark pine 45 pronghorn 45 nesting pairs 44 Great Basin 44 aspen trees 44 glaciers 44 FWS 44 Mogollon Rim 44 frog species 44 Servheen 44 temperate regions 44 Yellowstone Mont 43 species extinctions 43 higher elevations 43 wolf populations 43 spotted owls 43 aspens 43 black tailed prairie 43 barred owls 43 boreal forests 42 bird species 42 bull trout 42 mammal species 42 abnormally dry 42 grasslands 42 trumpeter swans 42 snowpack 42 timber harvests 42 Little Ice Age 42 polar bear populations 42 USGS 42 lynx 42 Antarctic Peninsula 42 aspen 42 bighorn sheep 41 rangelands 41 kelp forests 41 rangeland 41 scrub jays 41 atmospheric circulation 41 Cascade foothills 41 lake sediments 41 vertebrate species 41 Antarctic Ice 41 bighorns 41 extinctions 41 mid latitudes 41 southern Appalachians 41 Critically Endangered 41 Delta smelt 41 Grizzly bears 41 waterbirds 41 deer herds 41 ocean acidification 41 Uinta Mountains 41 Drought Monitor 41 coral species 41 black footed ferret 41 warmer winters 41 herds 41 black footed ferrets 41 mountain lions 41 California condor 41 sage grouse habitat 41 ecosystems 41 greenhouse warming 41 journal Nature Geoscience 40 critically endangered 40 endangered species protections 40 Snowpack 40 northern spotted owl 40 habitats 40 grizzly bears 40 bighorn 40 Mexican gray wolves 40 chytrid fungus 40 loggerhead sea turtles 40 okapi 40 habitat 40 beetle infestation