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3 International Letters of Natural Sciences

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Ethnomedicinal and ecological studies of some weeds in sugarcane fields of Villupuram district

100%

Dhanam S.

tom 11

nr 2

The present communication pertains to ethnobotany of major weeds of sugarcane fields in Villupuram district, Tamil Nadu. Present study was conducted in ten selected sites of Villupuram district in the sugarcane crop fields. Random quadrate method was adopted for studying phytosociological attributes of weeds. A total of 80 plant species belonging to 25 families were identified, out of which 46 plant species are medicinally important to cure different diseases in human beings directly. Amaranthaceae and Euphorbiaceae was the dominant family seen during observation. Frequency, Relative frequency, Density and Relative density of the species were calculated.

Ethnoveterinary practices in Villupuram district, Tamil Nadu, India

100%

Dhanam S. , Elayaraj B.

2014

tom 19

Ayurvedic medicines are considered to be the best systems of treatment in India and this system is spreading now globally. Natural products are also a part of our everyday life. Ethno veterinary medicine is developed by farmers in field and barns rather than and in scientific laboratories. It is less systematic, less formalized and usually transferred by word of mouth rather than writing. An ethnobotanical survey was conducted in 10 selected sites of Villupuram district. Twenty six plant species belonging to fourteen families were documented in the present study, to cure different diseases in animals. Interviews and detailed personal discussions were conducted with the traditional healers and local people to identify the plants and their medicinal information for six months. The study revealed that the different parts of these plants were used for treatment of different diseases. Leaves are the mostly used part to prepare medicine.

Distribution and composition of aquatic macrophytes in Santhapettai Lake of Villupuram district in Tamil Nadu

100%

Dhanam S. , Elayaraj B.

International Letters of Natural Sciences

2015

tom 47

Macrophytes are important component of the aquatic ecosystem and broad changes in the abundance of individual species and community composition provide valuable information on how and why an ecosystem might be changing. Santhapettai lake is one of the biggest fresh water lake in Villupuram district, Tamil Nadu. The physico-chemical parameters were analysed for one year (October 2012-September 2013). Quadrates were laid randomly and extending from shoreline towards the lake center. The macrophytes falling in each quadrate were sorted species wise, identified and data were recorded. The plants have been identified from fresh materials with the help of different floras. In this present investigation, a total of 33 species belonging to 23 families and 28 genera were identified under algae, pteridophytes, dicotyledons and monocotyledons. Further, the plants were classified in morphological group as floating (7), submerged (1), submerged anchored (13), floating leaved (1) and emergent anchored (11). The coverage/spread of macrophytes along the shorelines was higher compared to the centre of the lakes where the species composition was found reduced. Assessment of biota, continuous monitoring and conservation lake are the important components to safeguard the biological wealth of lentic and lotic freshwater ecosystem.