Autecology and reproductive biology of the family of podostemaceae in Kerala

Abstract

Podostemaceae is a unique family of angiosperms comprising rheophytic, herbaceous members with thalloid plant body.-The plants are distributed in the tropical and subtropical fresh water streams and water falls. The vegetative and reproductive features of the members of the Podostemaceae in Kerala have been studied with particular reference to the autecological and reproductive biological aspects. The work is mainly based on the spot study of the plants and observations in the laboratory. The role of Podostemaceae in the formation of a biotic structure for algae and associated animal forms mve studied. Analysis of chemical and physical parameters of water from collection spots mave done on all seasons. Adaptive W" . characters in the reproductive structures have tud~ed. A preliminary evaluation k 1 7 *.-kc. was done on the ecological significance of podostemads in their erratic habitat ? % -- Scientific evaluation of the level of endemism and chance of extinction is highly needed for wetland flora such as Podostemaceae. Timely assessment of physical, chemical and organic pollution of water bodies must be made. Adequate environmental and biological awareness based on intellectual property rights should be generally provided to the tourists as well as local people to enhance the effective protection of these wetlands in an ecologically sustainable manner.