O2 effects on population growth phenotype 2011-06-06T03:36:04Z A population growth range phenotype related to how growth of a microbial population is affected by different concentrations of oxygen gas (O2) in the environment. OMP:0000039 This is a high-level term whose primary purpose is to organize terms beneath it in the ontology, and we expect that it will not be used for direct annotations. Please consider using a more specific term to annotate each phenotype. mchibucos microbial_phenotype effect of non-nutrient environmental factors on population growth phenotype