Related by context. Frequent words. (Click for all words.) 55 mycorrhizal fungi 55 isoprene 54 atmospheric CO2 concentrations 54 nitrogen fixation 52 soil salinity 52 phytoplankton blooms 51 terrestrial ecosystems 51 temperate forests 51 acidic soils 51 thinnings 50 woody vegetation 50 systematics 50 coniferous forests 50 coniferous trees 50 absorbs carbon dioxide 50 Miscanthus 49 arsenate 49 potent greenhouse gas 49 plankton blooms 49 oak hickory 49 angiosperms 48 amphipods 48 riparian zones 48 atmospheric nitrogen 48 understory 48 spatial scales 48 deciduous forests 48 seagrasses 48 isotope ratios 48 atmospheric pollutants 48 woody plants 48 inorganic compounds 47 loblolly pine 47 photosynthetic 47 seed germination 47 taxa 47 acidify 47 montane 47 diatom 47 temperate zones 47 Phytoplankton 47 spruce fir 46 biogenic 46 ESTs 46 atmospheric ozone 46 hydrologic cycle 46 bioenergy crops 46 jack pine 46 abiotic 46 crop residues 46 carbon sinks 46 bioaccumulation 46 inorganic fertilizers 46 oxygen isotopes 46 atmospheric CO 46 leaf litter 46 grasses 46 forestry plantations 46 nitrogen fixing 46 diatoms 46 biofuel feedstocks 46 beetle infestations 46 lake sediments 46 Invasive plants 46 cordgrass 45 nitrification 45 vegetation 45 atmospheric methane 45 longleaf 45 Algal 45 Scientists theorize 45 algal 45 softwoods 45 habitat fragmentation 45 soils 45 atmospheric CO2 45 eucalypts 45 pollinating insects 45 population densities 45 microfossils 45 Cyanobacteria 45 marine sediments 45 lichens 45 Lignin 44 EROI 44 dieback 44 conifer trees 44 aerosol particles 44 glyphosate resistance 44 Fertilizing 44 temperate regions 44 carbon sequestration 44 nitrogen 44 elemental composition 44 kelp forests 44 oxidise 44 oxygen isotope 44 conifer forests 44 nutrient runoff 44 isotopic composition 44 atmospheric carbon dioxide