OUR ENVIRONMENT

15.1 ECOSYSTEM :

• The term Ecosystem was coined by Tansley. According to
  him Ecosystem is a symbol of structure and function of nature.


• The term Ecology was coined by Reiter.


• The term Ecology was first of all described y E.Haeckel.


• Father of India Ecology - Prof. Ramdas Mishra.
  *8 The boundaries of ecosystem are indistinct and have an

overlapping character with each other.

• “The total group of living things and environment of
  factors present in a particular place is called as ecosystem/”


• It means any structural and functional unit of the
  environment that can be identified and studied is called as
  ecosystem.


• Ecosystem may be natural or artificial, permanent or
  temporary. Large ecosystem is called as biome such as desert, forest
  etc.


• Homeostasis : Self maintainable characteristic is found in
  ecosystem. It means an ecosystem maintains the balance between
  the different trophic levels. Each trophic level controls the other
  trophic level in an ecosystem.


• Cybernetics : A science of self control [homeostasis] in an