Related by context. Frequent words. (Click for all words.) 54 aquatic ecosystem 53 wetland ecosystems 53 Yellowstone ecosystem 52 Greater Yellowstone Ecosystem 51 waterbirds 51 grassland birds 51 wintering birds 50 intertidal 50 waterfowl populations 50 seagrasses 50 freshwater ecosystems 49 Irrawaddy dolphins 49 tidal marshes 49 tidal wetlands 49 native brook trout 49 Everglades ecosystem 49 seagrass beds 48 estuarine 48 aquatic habitat 48 aquatic habitats 48 aquatic ecosystems 48 ecosystems 48 overharvest 48 aquatic invertebrates 48 freshwater 48 terrestrial ecosystems 48 anadromous fish 47 migratory shorebirds 47 wildlife 47 ecological degradation 47 habitats 47 biodiversity hotspot 47 coastal ecosystems 47 habitat 47 wood stork 47 ocean ecosystems 47 recreational fishery 47 riparian vegetation 47 Wadden Sea 47 inter tidal 47 eelgrass 47 wetland habitats 47 intertidal zone 47 headwater streams 47 conservation 46 frogs toads 46 tiger habitats 46 conserve biodiversity 46 populations 46 snowy plovers 46 freshwater fisheries 46 RSPB Scotland 46 amphibian populations 46 freshwater wetlands 46 freshwater ponds 46 woodland caribou 46 oyster restoration 46 species 46 wildlife conservation 46 salmonid 46 lowland forests 46 VDGIF 46 Birds RSPB 46 freshwater mussels 45 riparian habitat 45 aquatic vegetation 45 BirdLife International 45 Poyang Lake 45 rookeries 45 deciduous forests 45 marine ecosystems 45 habitat fragmentation 45 saltmarsh 45 kelp forests 45 elephant herds 45 planktonic 45 Cook Inlet belugas 45 waterfowl habitat 45 Birdlife International 45 gill netting 45 marine biodiversity 45 DNR biologist 45 MDWFP 45 marine ecosystem 45 shallow continental shelf 45 functionally extinct 45 mussel species 45 migrating waterfowl 45 wetlands 44 grassland habitat 44 koala habitat 44 migratory waterfowl 44 species extinctions 44 forested wetlands 44 eelgrass beds 44 longline fishing 44 overexploitation 44 biota 44 hen harrier 44 ecosystem 44 biodiversity hotspots