Related by context. Frequent words. (Click for all words.) 50 ocean ecosystems 48 habitat designations 48 species extinctions 48 habitat fragmentation 47 ecologically fragile 46 aquatic species 46 ecosystems 46 marine ecosystems 46 lynx habitat 46 marbled murrelet 46 species 45 ecologically sensitive areas 45 longline fishing 45 endangered species protections 44 habitats 44 fragile ecosystems 44 toxic algae blooms 43 Endangered Species Act 43 imperiled species 43 ecological 43 aquatic habitats 43 aquatic ecosystem 43 tidal wetlands 43 Ocean acidification 43 habitat designation 43 forest ecosystems 43 biodiversity 43 aquatic organisms 43 marine biodiversity 42 spotted owl habitat 42 longfin smelt 42 ecologies 42 overfishing pollution 42 overexploitation 42 aquatic ecosystems 42 marine ecosystem 42 caribou herds 42 owl habitat 42 endangered whales 41 Amstrup 41 Steller sea lions 41 Kassie Siegel 41 human reproductive cloning 41 amphibian populations 41 polar bear habitat 41 bio diversity 41 extinctions 41 Teshekpuk Lake 41 biosphere 41 freshwater wetlands 41 beluga sturgeon 41 habitat 41 overgrazing 41 catastrophic wildfires 41 dangerous precedent 41 polar bear populations 40 Servheen 40 endangered species 40 extinction 40 bottom trawling 40 aquifer recharge 40 biota 40 ecological catastrophe 40 bioprospecting 40 pollute groundwater 40 woodland caribou 40 marine organisms 40 seamounts 40 biophysical 40 migrating salmon 40 seagrasses 40 wetlands 40 coastal ecosystems 40 aquatic habitat 40 ecosystem 40 ocean acidity 40 quantum entanglement 40 biopiracy 40 endangered salmon 39 organisms 39 bull trout 39 vertebrate species 39 Yellowstone ecosystem 39 overhunting 39 caribou herd 39 fragile ecology 39 whale hunts 39 monocultures 39 wildlife habitats 39 delta smelt 39 marine mammals 39 salmon steelhead 39 subsistence hunting 39 stratospheric ozone 39 seabeds 39 insect populations 39 Cook Inlet belugas 39 northern spotted owl 39 arbitrary 39 red legged frog 38 Delta smelt