4.1. AQUATIC ORGANISMS

The aquatic organisms are classified on the basis of their zone of occurrence and their ability to cross these zones.

The organisms (both flora and fauna) in the aquatic ecosystem are unevenly distributed but can be classified on the basis of their life form or location into five groups

i) Neuston:iii) Plankton:iv) Nekton:v) Benthos:4.1.1. Factors Limiting the Productivity of Aquatic Habitats Sunlight:Photic zone:Dissolved oxygen:Transparency:4.2.1. Ageing of Lakes 4.2.2. In India 4.2.4. Removal of the nutrients from a lake Ameenpur Lake - First Biodiversity Heritage Site 4.3.1. Types 2. Manmade 4.3.2. Sources Trees 2. Non-point source