Index >> Fundamentals of Microbial Ecology >> Microbial Ecology Introduction

The ecological hierarchy of microorganisms ranges from individuals to an integrated community within an ecosystem Populations of microorganisms have functional roles (niches) within communities that permit their survival. Microbial population exhibit various adaptations for success in diverse communities. Communities usually undergo characteristic successional changes that may also lead to greater stability. Disturbances may disrupt the successional process but homeostatic forces act to restore the balance of a community. Stable microbial communities tend to have high diversities. The interactions within the community are often complex; the use of model ecosystems helps to understand population dynamics and ecosystem functioning.