Related by context. Frequent words. (Click for all words.) 64 mycorrhizal fungi 62 microflora 58 symbiotic bacteria 57 hydrologic cycle 57 soil salinity 57 secondary metabolites 56 riparian vegetation 56 nitrogen fixing 56 herbivory 56 photosynthetic organisms 55 decaying vegetation 55 atmospheric nitrogen 55 seed germination 55 nutrient uptake 55 phloem 55 chloroplast 54 intestinal flora 54 Bt toxin 54 mycelium 54 physicochemical 54 pasture grasses 54 chemical reactivity 54 bioaccumulation 54 Methylmercury 54 streambanks 54 reactive oxygen 54 parasitoids 54 gut microbiota 54 nitrogen fixation 54 polyamines 53 microbial ecology 53 toxic residues 53 zooxanthellae 53 woody vegetation 53 hydroxyl radicals 53 pathogenic microorganisms 53 chromatin structure 53 microorganisms 53 nutrient 53 bacteria fungi 53 biota 53 nutrient absorption 53 inorganic compounds 52 aquatic habitats 52 terpenes 52 Shewanella 52 cambium 52 forbs 52 nitrification 52 xylem 52 betaine 52 acidify 52 bioactivity 52 riparian zones 52 larval stages 52 soils 52 proteins fats 52 organic acids 52 phytate 52 nesting habitats 52 Nematodes 52 asparagine 52 absorbs carbon dioxide 51 toxicant 51 recharge groundwater 51 naturally occuring 51 unsaturated fatty acids 51 terrestrial ecosystems 51 Nitrogen oxides 51 vertebrate animals 51 gut flora 51 isoprene 51 cellular membranes 51 biologically active 51 pollinating insects 51 purines 51 mutagens 51 algal biomass 51 microbiota 51 purine 51 organisms 51 phyto 51 ecosystems 51 epiphytes 51 acidifying 51 nutrient rich 50 wetland ecosystems 50 hematopoietic 50 alkaline soils 50 denaturing 50 pest insects 50 fatty tissues 50 galactose 50 aquatic ecosystem 50 symbionts 50 insect populations 50 peroxides 50 proteolysis 50 atmospheric pollutants 50 Lignin 50 planktonic