Related by context. Frequent words. (Click for all words.) 60 aquacultural 59 ponds 58 prawn farming 57 freshwater ponds 56 catfish ponds 55 aquatic vegetation 55 reedbeds 55 salvinia 55 cordgrass 55 seagrass meadows 55 wetland ecosystem 55 submerged aquatic vegetation 54 aquatic invertebrates 54 fishponds 54 trawl nets 54 aquatic weeds 54 sewage lagoons 54 sargassum 54 eel grass 54 ricefields 54 freshwater habitats 54 mussel beds 54 clam beds 54 freshwater marsh 54 freshwater marshes 53 pisciculture 53 Hydrilla 53 seagrasses 53 reed beds 53 freshwater mussels 53 peat swamps 53 reed canary grass 53 Soil erosion 53 mudflat 53 water hyacinth 52 nesting habitats 52 pondweed 52 padi fields 52 coastal estuaries 52 mud flats 52 sewage effluent 52 salination 52 woody vegetation 52 oyster reef 52 salinization 52 eelgrass beds 52 saltwater marshes 52 Milfoil 52 marsh 52 tiger muskies 52 aquaculture 52 streambanks 52 forestry plantations 52 shrimp trawlers 52 brackish groundwater 52 polluting waterways 52 inland bays 51 migrating northward 51 riparian zones 51 mangrove trees 51 vlei 51 upland habitat 51 Phragmites 51 dengue mosquito 51 lagoons 51 aquatic weed 51 Invasive plants 51 Loktak lake 51 wetland habitat 51 Quagga mussels 51 cypress swamp 51 mariculture 51 oyster larvae 51 rusty crayfish 51 Three Gorges Reservoir 51 tui chub 51 cabbage palms 51 staghorn coral 51 waterbody 51 waterbodies 51 inter tidal 50 irrigating crops 50 recharge groundwater 50 hatchery trout 50 broodstock 50 delicate ecosystems 50 Coral reef 50 Poyang Lake 50 killifish 50 livestock manure 50 oily sludge 50 ornamental ponds 50 tunicates 50 aquatic organisms 50 duckweed 50 livestock rearing 50 stormwater ponds 50 saltwater 50 kelp beds 50 revegetated 50 larval stages