Ann. Limnol. - Int. J. Lim.
Volume 41, Number 4, December 2005
|Page(s)||281 - 289|
|Published online||15 February 2009|
Presence of tropical hydrophytes in relation to limnological parameters - a study of two freshwater ponds in Kolkata, India
Agricultural and Ecological Research Unit, Indian Statistical Institute, 203 B.T. Road, Kolkata - 700 108, India
Corresponding author: email@example.com
The presence of different species of hydrophytes was investigated in relation to Secchi disk visibility, pH, dissolved oxygen, electrical conductivity, total Kjeldahl nitrogen, total phosphorus and chlorophyll-a concentration in two tropical ponds nearby Kolkata, India, during a three years period (June 1999 to May 2002). The dominant flora in the ponds namely, Alternanthera philoxeroides, Nymphoides hydrophylla, Lemna aequinoctialis, and Vallisneria spiralis were found to subsist over a wide amplitude of nutrient levels thereby showing their adaptability to highly eutrophic ecosystems, a common feature of the tropics. However, the presence of some minor species could be associated with a narrow range of specific limnological variables.
Key words: Hydrophytes / nitrogen / phosphorus / minor flora / tropical ponds
© Université Paul Sabatier, 2005
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