Related by context. Frequent words. (Click for all words.) 61 aquatic habitats 59 aquatic ecosystem 56 ecosystems 56 aquatic ecosystems 55 freshwater ecosystems 55 marine ecosystems 55 aquatic habitat 55 habitat fragmentation 54 ocean ecosystems 54 aquatic invertebrates 53 biota 53 seagrasses 52 Soil erosion 52 wetland ecosystems 52 ecologies 52 terrestrial ecosystems 51 grassland habitat 51 overfishing pollution 51 intertidal 51 habitat degradation 51 habitats 51 marine ecosystem 51 deplete oxygen 51 species extinctions 50 Sea otters 50 bioaccumulation 50 coral reef ecosystems 50 nutrient runoff 50 coastal ecosystems 50 rocky reefs 50 ecological 50 Algae blooms 50 estuarine 50 tidal wetlands 49 eelgrass beds 49 marine habitats 49 Greater Yellowstone Ecosystem 49 marbled murrelets 49 benthic 49 biodiversity 49 forest ecosystems 49 aquatic 49 wildlife habitats 49 Invasive plants 49 ecology 49 inter tidal 49 estuaries 49 plankton blooms 48 hypoxia 48 phytoplankton blooms 48 wetland habitats 48 headwater streams 48 temperate forests 48 marine organisms 48 wildlife habitat 48 nutrient loading 48 aquatic species 48 Invasive species 47 freshwater 47 tidal marshes 47 Polar Regions 47 wetland habitat 47 salination 47 biogeochemical 47 harmful algal blooms 47 shoreline erosion 47 eutrophication 47 marine biodiversity 47 intertidal zone 47 grassland birds 47 habitat 47 endocrine disruption 47 Everglades ecosystem 47 amphibian populations 47 conserve biodiversity 47 nitrogen fixation 46 waterfowl populations 46 Salinity 46 coral reefs 46 eelgrass 46 seagrass beds 46 watersheds 46 planktonic 46 conserving biodiversity 46 kelp forests 46 salmonid 46 biodiversity hotspot 46 nutrient absorption 46 saltwater intrusion 46 river deltas 46 nonpoint source pollution 46 coastal estuaries 46 forests grasslands 46 hydrological cycle 46 invertebrates 46 nearshore waters 46 forested wetlands 46 salmonids 46 toxic algae blooms 45 underwater grasses 45 reefs