Related by context. Frequent words. (Click for all words.) 53 nitrogen fixation 52 symbionts 50 biogeochemical 50 photosynthetic 50 diatoms 47 elemental composition 47 nutrient uptake 47 prokaryotes 47 photosynthesis 47 algal 46 phytoplankton 46 abundances 46 diatom 46 planktonic 45 Phytoplankton 45 terrestrial ecosystems 45 iron fertilization 45 photosynthesize 45 Daphnia 45 plankton 45 Cyanobacteria 45 atmospheric CO 44 temperature salinity 44 atmospheric nitrogen 44 nitrogen fixing 44 isotopic composition 44 myoglobin 44 marine invertebrates 44 zooplankton 44 dinoflagellates 43 deplete oxygen 43 chloroplast 43 methanogens 43 hydrothermal vent 43 isotopic 43 alga 43 solar irradiance 43 oxygen isotopes 43 aerosol particles 43 Algal 43 Computer simulations 42 cyanobacteria 42 oceanic 42 intertidal zone 42 gobies 42 bathymetry 42 isoprene 42 otoliths 42 Oceanographers 42 biogeochemistry 42 organisms 42 archaea 42 proteolysis 42 absorbing carbon dioxide 42 bioaccumulation 41 toothed whales 41 algae 41 hydrodynamics 41 taxa 41 trophic 41 mollusks 41 foraminifera 41 single celled organisms 41 biogenic 41 atmospheric methane 41 microscopic algae 41 metabolic pathways 41 sea urchins 41 copepods 40 microorganism 40 eel grass 40 oligosaccharides 40 freshwater ecosystems 40 eukaryotic 40 iridescence 40 multicellular 40 fluxes 40 single celled 40 asexual reproduction 40 kelp forests 40 atmospheric CO2 40 nematode worms 40 abiotic 40 phosphorescence 40 stickleback 40 marine organisms 40 Weddell Sea 40 oceanographers 40 hydrodynamic 40 flagella 40 ESTs 40 biota 40 organism 40 metabolise 40 dissolved oxygen 39 angiosperms 39 quantification 39 productivities 39 microbial 39 nutrient 39 atmospheric carbon dioxide