sympoisum 2009
« Previous EntriesEffects of carbofuran on survival and growth of Duttaphrynus melanostictus tadpoles
Thursday, March 4th, 2010M.R. Wijesinghe, B.A.D.M.C. Jayatillake and W.D. Ratnasooriya
This study investigated the impact of a commonly used carbamate pesticide, carbofuran, on survival, growth, development and activity of larvae of the Asian Common Toad, Duttaphrynus melanostictus Schneider 1999. Continuous exposure trials of 15 days were conducted using tadpoles of Gosner stages 24-25 with a commercial grade carbofuran (Curaterr […]
Diversity and microhabitats of termites in a natural and a secondary forest in Hantane hills, Kandy District
Thursday, March 4th, 2010I.I. Hemachandra, 1,2, J.P. Edirisinghe 1, W.A.I.P. Karunaratne 1, C.V.S. Gunatilleke3
Termites (Isoptera) are the most important decomposers in tropical rain forests and are vital in maintaining nitrogen and carbon cycles. They are sensitive to disturbances, especially to forest canopy losses and hence are one of the important bioindicator taxa. The documented termite fauna of Sri […]
Effects of urea and adult palm fertilizer mixture on the survival and body wall tissues of the earthworm, Pheratima hawayana
Thursday, March 4th, 2010O.K.C. De Silva and W.U. Chandrasekera
We carried out a laboratory experiment to find out the effects of urea and urea containing Adult Palm Mixture (APM) fertilizer on the percentage of survival and body wall tissues of one of the commonest earthworms, Pheretima hawayana.
In this experiment, twenty plastic dishes with the dimensions of 510 cm2 area […]
Investigation of ergonometric parameters of university lecture hall furniture
Wednesday, March 3rd, 2010U.L. Palamakumbura and H.S. Amarasekara
Sitting comfort is considered important particularly in working environments with regards to health and performances of day to day work. Sitting on a comfortable seat helps to relax the body and reduce energy consumption but on the other hand prolong sitting slackens abdominal muscles and may cause backache. Application of ergonomic […]
Evaluation of benefits that can be obtained from FSC certification
Wednesday, March 3rd, 2010K.M.T.S. Jayarathne and S.K.Pathirage
Forest Stewardship Council (FSC) is an international non-profit, multi-stakeholder organization established in 1993 to promote responsible management of the world’s forests. FSC offers a comprehensive set of universally applicable requirements for responsible forest management with its 10 Principles and 56 associated Criteria. Achieving FSC can be further divided into standard setting, independent […]
Comparison of wood quality of even-aged Teak (Tectona grandis L.f.) plantations in three districts of Sri Lanka
Wednesday, March 3rd, 2010D.P. Weerasinghe and H.S. Amarasekara
Teak is listed as a super luxury timber in Sri Lanka and it has a high demand from construction and furniture industries. Teak hardwood is highly durable. It is an exotic species and, almost all teak plantations are located in dry and intermediate zones of the country. There are about 35,000 […]
Estimation of biomass carbon of Eucalyptus grandis using IRS LISS III Satellite images in up country wet zone of Sri Lanka
Wednesday, March 3rd, 2010A. Gunawardena1, S.P. Nissanka2, N.D.K. Dayawansa3
There are vital needs to collect some necessary data on forest plantations to address the global climate change that includes carbon sink concept in Kyoto protocol. There are very rapid expansions of forest plantation in Asia-Pacific region and Sri Lanka also have a large extent of forest plantations such as […]
Forest woodland ecosystem: An insight into the addition of litter through teak plantation
Wednesday, March 3rd, 2010A. K. Mani, S. Manivasakan, S. Vijayabaskaran
Teak is an important tree species grown under plantation conditions for timber requirement. Being a deciduous tree, it favours for accelerated nutrient cycling. A field experiment was conducted in an eighteen year old teak plantation at Forest College and Research Institute, Mettupalayam, Tamil Nadu, India to study the litterfall, […]
Growth, biomass and carbon accumulation among rubber (Hevea brasiliensis), teak (Tectona grandis) and mahogany (Swietenia macrophylla) A case study from 1 to 10 Years of Age Series
Wednesday, March 3rd, 2010N. Appuhamy1, L. Samarappuli2 and S. Karunaratne1
The study was conducted to compare the biomass accumulation and carbon stocks among rubber, teak and mahogany. Above Ground Biomass of each species were calculated using the allometric models. Mean total tree height of rubber, teak and mahogany were ranging from 0.87 m to 20.32 m, 3.41 m to […]
Timber production in high density planting of Hevea brasiliensis
Wednesday, March 3rd, 2010T.U.K. Silva , V.H.L. Rodrigo1, S.M.C.U.P. Subasinghe
The demand of natural rubber has increased continuously with the increase in population and living standards of the human being. Rubber plantations are also a major resource of timber and fuel wood. In order to meet the continuous increase in demand for latex, timber and fuel wood, the productivity […]
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