As regards species diversity, in 15 out of 23 investigations
organic agriculture performed better; in no case conventional farming had a better performance.
Under European conditions,
organic agriculture performs better than conventional agriculture with regard to certain parameters: for example, 30 to 100 percent higher microbial activity3 and a significantly higher biomass (+30 to 40 percent), density (+ 50 to 80 percent) and species diversity of earthworms, a key soil - macro faunal species4.