Related by context. Frequent words. (Click for all words.) 57 terrestrial ecosystems 57 temperate forests 56 lynx habitat 54 boreal 54 snowshoe hare 54 woodland caribou 53 aquatic ecosystem 53 snowpack 52 ptarmigan 52 habitat 52 subarctic 52 pronghorns 52 amphibian populations 51 biome 51 boreal forests 51 habitat fragmentation 51 arthropod 51 species 51 glacial melting 51 avian species 51 caribou herd 50 beaver pond 50 headwater streams 50 caribou herds 50 forest ecosystems 50 upland bird 50 habitats 50 icecap 50 spotted owl habitat 49 ecosystems 49 atmospheric CO 49 vernal pool 49 glacial melt 49 aspen trees 49 timberline 49 sagebrush habitat 49 tidal wetlands 49 boreal forest 49 Yellowstone ecosystem 49 manmade structures 49 biodiversity hotspots 49 mountain pine beetles 49 polar bear habitat 49 retreating glaciers 49 glacier melt 49 lynx 49 biosphere 48 alpine lakes 48 snow melt 48 spawning habitat 48 melting snowpack 48 adelgid 48 wolverines 48 amphibian species 48 biota 48 arid regions 48 snowpacks 48 vernal pools 48 aquatic habitats 48 grizzly bears 48 glaciers 48 river basins 48 pikas 48 RMNP 48 glacial retreat 48 elk herd 47 freshwater lakes 47 Chihuahuan Desert 47 owl habitat 47 marten 47 snowshoe hares 47 garter snake 47 species extinctions 47 bald eagle nests 47 vertebrate species 47 streamflow 47 marbled murrelet 47 lakes 47 vegetation 47 marine sediments 47 nesting habitat 47 freshwater wetlands 47 poleward 47 barrens 47 Suisun Marsh 47 hydrological cycle 47 grassland birds 47 mountain caribou 47 ungulate 47 migrating waterfowl 47 scrub jays 47 lodgepole pines 47 megafauna 47 mountain ranges 47 whitebark pine 47 musk oxen 47 watersheds 47 rock outcrops 47 Sierra snowpack 47 mountain glaciers 47 cottontails