autochthonous flora

What is autochthonous flora?

autochthonous flora meaning in Soil Science terminology / glossary / dictionary is:
(i) That portion of the micro flora presumed to subsist on the more resistant soil organic matter and little affected by the addition of fresh organic materials. (ii) Microorganisms indigenous to a given ecosystem; the true inhabitants of an ecosystem; referring to the common microbiota of the body of soil microorganisms that tend to remain constant despite constant fluctuations in the quantity of fermentable organic matter. Contrast with zymogenous flora. Also termed oligotrophs.

 

reference: Soil Science Society of America