explain d phenomenon of BIOLOGICAL MAGNIFICATION.how does it affect organism belonging to different trophic levels particularl the teritary consumer.
Answers
The man-made wrongful process of harmful chemical substances and heavy metals getting mixed in big river bodies (lakes, rivers, canals and seas) and then move into the food chains of the ecosystems is called biological magnification. The result is that they get into the diet of aquatic organisms. Then these get into the bodies of higher level predators in the food chain.
The increase in toxic materials in the organisms higher up in the food chain, due to their presence in the organisms in the lower levels is called biological magnification.
Because of mixing of toxic chemical substances in water and Earth, the animals, birds, fish and humans who feed on these get infected. Their bodies build gradually materials harmful to their own health.
Reduce the effect of biomagnification or biological magnification by
1. preventing oily wastes from cooking, oil, grease, chemicals, dyes, wasted pills, medications, used sanitary napkins, cleaning agents, pesticides, herbicides, fertilizers into the sewerage or drainage through sink in the kitchen or flushing through toilets.
2. Dispose of the garbage properly through the municipal disposal system.
3. Organic farming reduces the use of pesticides, herbicides and fertilizers.
Biological magnification, also known as bio-magnification refers to the increase in the concentration of toxic substances like DDT, chemicals, heavy substances etc. with each successive trophic level of the food chain. The concentration of these toxic substances is highest at the highest trophic level.
Lets take the example of DDT which have been applied on the farm lands. The DDT gets washed oof from the farm land reaches to the water. In water, the small phytoplanktons (Producers) would accumulate certain amounts of DDT in them and then it would be passed on to the next trophic level zooplanktons and then to (fishes) which feed on these zooplanktons. Concentration of DDT would increase with the trophic level. Producers having the minimum concentration while the tertiary consumers would have the highest concentration of DDT accumulation in them because they consume many secondary consumers which in turn consume many primary consumers .