Biomass – microbial populations refers to the total mass of living microorganisms within a particular environment. Microbial populations include bacteria, archaea, fungi, and other microscopic organisms, and they play a critical role in many ecological processes.

The biomass of microbial populations can be measured in a number of ways, including direct counting of cells under a microscope, DNA sequencing to identify and quantify different species, and chemical analysis of organic matter in environmental samples.

Microbial biomass is particularly important in nutrient cycling, as microorganisms play a key role in the decomposition of organic matter and the cycling of nutrients such as carbon, nitrogen, and phosphorus. In addition, microbial populations are important in the bioremediation of contaminated environments, as certain bacteria and fungi can break down pollutants and other toxic substances.

Microbial biomass also has potential as a source of renewable energy. Microorganisms can be used to produce biofuels such as ethanol, butanol, and biodiesel, and they can also be used to generate electricity through microbial fuel cells.

Overall, understanding the biomass of microbial populations is important for understanding the functioning of ecosystems and the potential for using microorganisms in various biotechnological applications.