The Ministry of Environment and Forest (MoEF), Government of India
constituted a committee “Operation Kolleru” to protect the lake. The
objective of the programme is to bring back the ecological balance of
Kolleru Lake which is a Gift of nature.
Activity-1
Observe any (water) ecosystem in your surroundings and identify the
different food chains and food web operating in this ecosystem. Write the
following details in your notebook.
When a forest is cut down and a food crop is grown in its place, a
natural established ecosystem with its vast number of species in a state of
dynamic equilibrium is replaced by a monoculture i.e. an unnatural
concentration of a single crop of various kinds grown in different fields
to provide cereals or roots, others grass for domestic animals.
When we grow crops in large concentrations we also get food in
abundant quantities. This situation is optimum for pest, parasites like fungi
to grow on this food material. If the quantities of food are larger then
