Related by context. Frequent words. (Click for all words.) 54 anoxic 54 areal extent 53 equatorial Pacific Ocean 53 thermocline 53 Deepwater Horizon blowout 53 nutrient runoff 53 terrestrial ecosystems 52 coastal waters 52 algal bloom 52 landmasses 52 El Nino warming 52 interglacial period 51 iron fertilization 51 winterkill 51 reefs 51 oxygen depletion 51 storminess 51 gyre 51 nutrient loading 51 nearshore waters 51 continental shelf 51 hypoxia 51 marine sediments 51 upwelling 51 toxic algae blooms 51 phytoplankton 51 herring fishery 51 El Ninos 51 coastal wetlands 51 salinity 50 Arctic Ocean 50 atmospheric methane 50 seafloor 50 inshore waters 50 harmful algal blooms 50 toxic algae bloom 50 seagrasses 50 eelgrass 50 algae bloom 50 mid latitudes 50 coastal estuaries 50 headwater streams 50 Younger Dryas 50 bowhead 50 equatorial Pacific 50 freshwater mussels 49 ragweed pollen 49 sediments 49 icecap 49 microscopic algae 49 aquatic ecosystem 49 dissolved oxygen levels 49 river deltas 49 hydrological cycle 49 coastal marshes 49 estuaries 49 intertidal 48 thermosphere 48 diatoms 48 stratospheric ozone 48 recreational fishery 48 oyster reefs 48 inland waters 48 seabeds 48 Serreze 48 sedimentary basin 48 atmospheric CO 48 ocean acidity 48 acidification 48 bald eagle nests 48 sediment 48 ITCZ 48 freshwater wetlands 48 shoaling 48 freshwater lakes 48 diatom 48 benthic 48 lakes 48 algal blooms 48 coral colonies 47 glacial melt 47 colder winters 47 oxygen starved 47 Weddell Sea 47 dissolved oxygen 47 estuarine 47 aerosol particles 47 subarctic 47 Ordovician 47 alga 47 Tropical Storm Ana 47 zebra mussel 47 cod fishery 47 continental crust 47 shorelines 47 amphibian populations 47 landmass 47 Deepwater Horizon spill 47 algae blooms 47 freshwater 47 kelp forests