Related by context. Frequent words. (Click for all words.) 75 boreal forest 56 forests 55 forest ecosystems 54 peatlands 54 forest 53 tundra 53 wildlands 52 hardwood forests 52 biodiversity 52 Arctic tundra 51 woodlands 51 prairies 51 grasslands 50 Arctic 50 tropical rainforests 49 habitat 49 ecosystems 49 tropical forests 49 mountain glaciers 49 rainforests 49 caribou 48 peatland 48 Prairies 48 pine beetle 48 glaciers 48 lynx 48 forested 48 spotted owls 48 carbon sinks 48 permafrost 47 peat bogs 47 atmospheric CO2 47 arctic 47 tropical rainforest 47 species 47 uplands 47 wilderness 47 bird species 47 wetlands 47 wetland 47 prairie 47 paleontological 46 habitats 46 Nature Conservancy 46 oceans 46 glaciation 46 lodgepole pine 46 rainforest 46 pine forests 46 biosphere 46 Forests 46 amphibian species 46 wildlife habitat 45 wolverines 45 forestland 45 ecological 45 Wilderness Society 45 Boreal 45 tropical forest 45 ForestEthics 45 polar regions 45 woodland 45 watersheds 45 birdlife 45 anthropogenic 45 aboriginal peoples 45 lichens 45 pristine wilderness 45 aspen 45 grassland 45 polar bears 45 Athabasca River 44 waterfowl 44 grizzly bears 44 marine ecosystems 44 polar 44 Natural Areas 44 woodlots 44 atmospheric carbon dioxide 44 bull trout 44 greenhouse warming 44 biodiversity conservation 44 forestlands 44 freshwater 44 mountain pine beetle 44 peat bog 44 Amazon rainforest 44 snowpacks 44 lichen 44 conifer 44 freshwater lakes 44 aspens 43 wildlife 43 aquatic ecosystems 43 Alberta oilsands 43 extinctions 43 fauna 43 wintering grounds 43 Little Ice Age 43 mammal species 43 wetland habitat