Related by context. Frequent words. (Click for all words.) 68 harmful algal blooms 61 toxic algae blooms 60 algal blooms 59 microscopic algae 59 algal bloom 58 toxic algae 58 terrestrial ecosystems 58 alga 58 protozoan 58 algae blooms 58 ocean acidity 57 aquatic ecosystems 57 nutrient loading 56 seagrasses 56 Didymo 56 cyanobacteria 56 marine organisms 55 oxygen depletion 55 ocean acidification 55 Phytoplankton 55 seagrass beds 55 acidification 54 ocean ecosystems 54 aquatic habitats 53 amphibian populations 53 marine invertebrates 53 nitrogen fixation 53 toxic algae bloom 52 intertidal 52 phytoplankton 52 El Nino warming 52 marine ecosystems 52 coral bleaching 52 invasive species 52 hydrological cycle 52 Ocean acidification 52 insect populations 52 dinoflagellates 52 zooplankton 52 coastal ecosystems 52 Daphnia 51 biota 51 larval stage 51 aquatic species 51 shoaling 51 nutrient pollution 51 copepods 51 eutrophication 51 sea squirts 51 species extinctions 51 subtropical regions 51 freshwater mussels 51 salinity 51 endocrine disrupters 51 aerosol particles 50 sea slugs 50 estuarine 50 algal 50 algae 50 ecosystems 50 nutrient runoff 50 Hydrilla 50 nearshore waters 50 diatoms 50 aquatic organisms 50 species 50 aquatic ecosystem 50 dissolved oxygen levels 50 algae bloom 50 estuaries 50 Invasive species 50 EDCs 50 reefs 50 nonpoint source pollution 49 Vibrio 49 plankton 49 whitefly 49 organisms 49 marine ecosystem 49 phenology 49 sea squirt 49 Nematodes 49 aquatic insects 49 endocrine disruptors 49 atmospheric circulation 49 trophic 49 toxicants 49 microorganisms 49 microscopic organisms 49 freshwater ecosystems 49 isoprene 49 chytrid fungus 49 anthropogenic 49 microbiome 48 Lionfish 48 shoreline erosion 48 microbiota 48 insect pests 48 keystone species 48 diatom 48 migratory patterns