The effect of mercury on some aquatic plants

Three aquatic plants, Hydrilla verticillata Presl, Pistia stratiotes L. and Salvinia molesta D.S. Mitchell, were treated with different concentrations of mercury ranging from 1 to 1000 μg litre −1 at three different exposure durations, i.e. 1,3 and 5 h. All were found to be severely affected by merc...

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Bibliographic Details
Published in:Environmental pollution. Series A. Ecological and biological 1985, Vol.39 (3), p.207-216
Main Authors: Mhatre, G.N., Chaphekar, S.B.
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Ecotoxicology, biological effects of pollution
Fresh water environment
Fundamental and applied biological sciences. Psychology
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Summary:Three aquatic plants, Hydrilla verticillata Presl, Pistia stratiotes L. and Salvinia molesta D.S. Mitchell, were treated with different concentrations of mercury ranging from 1 to 1000 μg litre −1 at three different exposure durations, i.e. 1,3 and 5 h. All were found to be severely affected by mercury. Foliar injury, chlorophyll content and phytomass showed perceptible effects with increasing exposure to the metal. In the case of floating plants a positive relationship was obtained between Leaf Injury Index (LII) and doses of the metal. The possible use of aquatic plants in general, and floating plants in particular, as simple bioassay material in biomonitoring and toxicity studies is discussed with special reference to LII as a simple biomonitoring parameter.
ISSN:0143-1471
DOI:10.1016/0143-1471(85)90097-2