Introduction

  • An ecosystem is considered one of the levels of organization in the biosphere.
  • It was basically described as plants & animals interacting with environmental factors for their survival.

Concept of Ecosystem

An ecosystem is a relationship that exists between organisms and their non-living surroundings.
  - A.G. Tansely 1935

In a natural ecosystem,

This consists of various plants, animals & microorganisms - Biotic component.
The soil, air & water (physical environment) -  Abiotic component.