Related by context. Frequent words. (Click for all words.) 74 aquatic ecosystems 65 ecosystems 65 marine ecosystems 64 wildlife habitat 63 habitat 63 marine ecosystem 63 ocean ecosystems 62 watersheds 62 forest ecosystems 61 spawning habitat 61 coastal ecosystems 61 wildlife habitats 60 aquatic organisms 60 ecological 59 wetlands 59 wetland habitat 59 ecosystem 58 estuary 58 waterways 58 ecology 57 freshwater 57 estuaries 57 habitats 57 biodiversity 57 lakes 57 aquatic species 56 wetland 56 fragile ecosystem 56 aquatic 56 estuarine 55 eelgrass 55 nesting habitat 54 habitat restoration 54 Watersheds 54 biosphere 53 wildlife 53 fragile ecosystems 53 aquatic vegetation 53 species 53 tributaries 53 marine biodiversity 52 marine habitats 52 salinity 52 fisheries 52 aquatic insects 52 lake 51 rivers 51 shorelines 51 coral reefs 51 wetland restoration 51 marine ecology 51 cutthroat trout 51 fishery 51 dissolved oxygen 50 reefs 50 headwaters 50 irrigated agriculture 50 watercourse 50 waterway 50 invasive species 50 freshwater lakes 49 Invasive species 49 ecologically 49 birdlife 49 vegetation 49 algae blooms 49 migratory fish 49 flora 49 TMDL 49 nutrient 49 bull trout 48 sedimentation 48 bio diversity 48 Watershed 48 polluted runoff 48 algal blooms 48 fauna 48 polar bear habitat 48 Athabasca River 48 river basins 48 nutrient pollution 48 riparian 48 marsh 48 oyster reefs 48 plankton 48 inland lakes 48 salt marsh 48 biologically diverse 48 streamside 48 shoreline 48 trout streams 48 sediment 47 boreal forest 47 river basin 47 Great Lakes basin 47 freshwater lake 47 coastal wetlands 47 zooplankton 47 River Watershed 47 salmon fishery 47 shellfish beds