Question

Explain any three different ways the population density can be measured, with the help of an example each.

Answer 1

The different ways by which population density can be measured are

(1i) Population density can be measured by counting all the individuals in a region, but if the population is large, then counting may not be possible. Example: Counting Siberian cranes at Bharatpur wetlands.

(2) Percent cover or biomass is also used to measure the population density in huge populations. Example: Dense laboratory culture of bacteria in a Petri dish can be measured only by biomass.

(3) Relative density is also used to measure population density. Example: The number of fish caught per trap is used to measure its total population density in a lake.