Winogradsky column

Winogradsky column definition

A glass column packed with mud and overlaid with water to mimic an aquatic environment in which various bacteria develop over a period of months. (Brock Biology of Microorganisms)

A glass column with an anoxic lower zone and anoxic upper zone, which allows the growth of microorganisms under conditions similar to those found in a nutrient-rich lake. (Prescott’s Microbiology)