Archive for March, 2010
« Previous EntriesDiversity and distribution of mangrove flora in the Attaragoda wetland, Galle with some notes on avifauna
Monday, March 22nd, 2010B. Jayasekara1, I.R. Wedage2 and P. N. Dayawansa2
Attaragoda is a mangrove wetland situated in the Southern Coast (Latitude: 6 1′ 60N, Longitude: 80
15′ 0E), 3km outside Galle. This luxuriant patch of mangrove forest faces immense pressure due to human activities. Diversity and distribution of mangrove species in relation to salinity levels and species
richness of avifauna [...]
Diversity of medicinal plants in the Mihinthale sanctuary
Monday, March 22nd, 2010A. Herath1, C. Karunanayake1 and S. Wijesundara2
Sri Lanka contains an enormous biodiversity of medicinal plants. Flora of Sri Lanka reports that there
are 3368 angiosperms in Sri Lanka, out of which 20% are medicinal. There is a growing demand for medicinal plants in primary health care. However, the local supply of medicinal plants can not meet [...]
Herpetofaunal diversity and distribution in Kalugala proposed forest reserve in Sri Lanka
Monday, March 22nd, 2010W.M.S. Botejue and J. Wattewidanage
This study reports species richness, abundance and diversity of herpetofauna in the Kalugala Proposed
Forest Reserve (KPFR). KPFR is a primary lowland tropical rain forest, surrounded by secondary and disturbed vegetation due to human activities like cultivation, logging and collecting firewood. Herpetofaunal communities of these different habitats (closed forest, ecotone, home gardens [...]
How do Sri Lankan shrub frogs Philautus popularis spend their night time: Field observations from Bolgoda wetland complex
Wednesday, March 17th, 2010H.G.S.K. Dayananda and D.D. Wickramasinghe
Sri Lanka is an amphibian hot spot providing home for 109 species. Nevertheless, studies on ecology and biology of amphibians of Sri Lanka are scarce and behaviour of frogs has drawn even less attention. Philautus popularis (Ranidae, Rhacophorinae; Manamendra-Arachchi & Pethiyagoda, 2005) is an endemic shrub frog which occurs in the [...]
Distribution and population parameters of selected tree species in Gilimale and Kithulgala Forest Reserve
Wednesday, March 17th, 2010S. S. Ranathunga and B.M.P Singhakumara
Field surveys have not been carried out in Sri Lanka to gather the population data on critically endangered tree species in their habitats. The population data on the critically endangered tree species are important to understand the present status of the population. In this study, the population data of seven [...]
Utilization of treated tannery waste water using HRTS (High Rate Transpiration System)
Wednesday, March 17th, 2010S. Krishnamoorthi and G. Kandasamy
The major objective of this paper is given to soil and ground water quality improvement by utilizing the high transpiration pull property of specific plants. It acts as a catalyst to improve the water management and also effluent is getting treated in a eco friendly manner. We utilized the tannery effluent [...]
Efficient removal of nitrogen/phosphorus by Bio-Geo Filter ditches consisting of laterite
Wednesday, March 17th, 2010G.S.M Fonseka1, N.P.M Rajaguru2, K.C.J Jayasekara2, B.C Liyanage2 and S.S. Iqbal2
In order to develop low-cost energy saving ways to treat wastewater in combination with resource recycling, a plant bed filter ditch in which terrestrial and aquatic plants are used to remove nitrogen (N) and phosphorus (P) from domestic wastewater specially from the septic tank effluents. [...]
A Multi agent system for environmental friendly agriculture
Wednesday, March 17th, 2010R. Rupasinghe, A. Ranatunga, S. Rathnayake, A. Sajagahan and A. Karunananda
Environmental sustainability has become an important topic nowadays due to various adverse effects of natural systems which has caused the mankind to suffer in multi faceted difficulties. Achieving the environmental sustainability is not an individual effort but a collective effort of all the stake holders [...]
Baseline Survey on Biodiversity in up country tea estates in Sri Lanka
Wednesday, March 17th, 2010G.G.T. Chandrathilake1
Conventional tea plantation was assessed in terms of biodiversity in up country tea estates in Sri Lanka. A rapid survey was carried out to document the both faunal and floral diversity associated in selected nine (9) tea estate in Nuwara Eliya district an areas that have not been properly surveyed for biodiversity. Based on [...]
Efficiency of some local plants as eco-friendly pest control agents in reducing infestation
Wednesday, March 17th, 2010T.V.N.M. Gunarathna and M.M.S.C. Karunaratne
Repellent effects of powdered leaf mixtures of four plant species, Piper nigrum (black pepper), Ocimum gratissimum (maha maduruthala), Cinnamomum verum (cinnamon) and Mentha viridis (mint) were evaluated against the adult rice weevil, Sitophilus oryzae under laboratory conditions (29 200 C and 842 % relative humidity). The evaluation was made with the [...]
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