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SESSION-3: Aquatic Biodiversity
PAPER-5
: Nutrient status of lentic water bodies and
diversity of Aquatic Macrophytes-
Narayana J

Abstract

Lentic water bodies receive   nutrients from allochthonous and autochthonous   sources and they promote the succession of aquatic macrophytes.   The present study comprises nutrient condition of sediment and water, and its influence on the growth and diversity of aquatic plants.   During the study period (1999-2000), water and sediment samples were collected and analysed for calcium (Ca 2+ ), magnesium (Mg + ), sodium (Na + ), potassium (K + ), nitrates (NO 3 + ) and phosphates (PO 4 3- ).   Similarly aquatic macrophytes were collected and identified to know the distribution and diversity of macrophytes.    The present study concluded that, increase in the nitrate and phosphate concentration both in sediment and water, influence   the distribution and diversity of macrophytic vegetation and luxuriant growth with great succession of dominant species   was encountered.

Address:
Department of Environmental Science,
Kuvempu University,
Jnanasahyadri Shimoga,
Karnataka, India.
Phone: 082821/656251
E-mail: narayancs@rediffmail.com