Community

Definition

A community in microbiology refers to a group of interacting microorganisms, often of different species, living together in a specific environment. These interactions can affect the growth, survival, and function of the microorganisms involved.

5 Must Know Facts For Your Next Test

1. Microbial communities can exist in various environments including soil, water, and the human body.
2. Community interactions among prokaryotes can include mutualism, commensalism, parasitism, and competition.
3. Biofilms are an example of a microbial community where microorganisms adhere to surfaces and produce extracellular polymeric substances (EPS).
4. The composition of a microbial community can influence nutrient cycling and energy flow within its ecosystem.
5. Studying microbial communities helps scientists understand microbial diversity and the roles these organisms play in their habitats.

Review Questions

• What are some environments where microbial communities can be found?
• How do biofilms exemplify a type of microbial community?
• Why is it important to study the composition of microbial communities?

Related terms

Mutualism:

A relationship between two species where both benefit.

Biofilm:

A structured community of microorganisms encapsulated within a self-produced matrix adhering to surfaces.

Microbiome:

The collection of genomes from all the microorganisms in an environment.