If the concentration of DDT were 0.2 ppm in water of a lake, what would be its likely concentration in fish in the following food chain? Plankton -> Fish -> Fish-eating birds. Sir/Mam please explain how to calculate.
The biomass at each level in a food chain gets less, so the concentration of DDT will increase.
The increase in concentration of pesticides in a food chain is called bio-magnification.
Producer (Plankton 0.2ppm)--------- Primary consumer ( Fish1.0ppm)-------- secondary consumer(Fish eating birds.5.0ppm)
Based on the above explanation, we can say that DDT becomes concentrated in the tissues of organisms of three successive trophic levels in a food chain.The process of concentration goes right on up the food chain from one trophic level to the next.
We hope that clarifies your query.