Your search found 5 records
1 Tase, N.; Shimada, J.; Tanaka, T. (Eds.) 1995. Hydrological study data in Sri Lanka: Data book of "hydrological cycle in humid tropical ecosystems." Part II. Special Research Project on Global Environmental Change, University of Tsukuba, Japan. iii, 110p.
Soil properties ; Water quality ; Precipitation ; Rivers ; Groundwater ; Catchment areas ; Soil water / Sri Lanka / Peradeniya / Batalagoda / Puttalam / Maha Illuppallama
(Location: IWMI-HQ Call no: 551.48 G744 TAS Record No: H018476)
2 Sri Lanka. Ministry of Agriculture, Lands and Forestry; ADB` 1997. Upper watershed management study, Democratic Socialist Republic of Sri Lanka - Final report: Appendix 7 - Rural development, training and consulting services aspects (draft) Draft report prepared by LTS International Ltd, Resources Development Consultants and Hunting Technical Services Ltd. Project preparation technical assistance 2619. 32p.
Watershed management ; Rural development ; Income generation ; Farmers ; Training ; Institutions ; Forestry ; Soil conservation ; Water conservation / Sri Lanka / Nuwara Eliya / Peradeniya
(Location: IWMI-HQ Call no: P 4465 Record No: H020419)
3 Goonasekera, K. 1997. Further evaluation of the practical field application of the aquaterr soil moisture probe. Report submitted to IIMI. ii, 25p.
Soil moisture ; Measurement ; Measuring instruments ; Soil water ; Irrigation scheduling / Sri Lanka / Peradeniya / Meewathura / Dodangolla / Horton Planes
(Location: IWMI-HQ Call no: IIMI 631.4 G744 GOO Record No: H021618)
4 Rajakaruna, R. S.; Piyatissa, P. M. J. R.; Jayawardena, U. A.; Navaratne, A. N.; Amerasinghe, Priyanie H. 2008. Trematode infection induced malformations in the common hourglass treefrogs. Journal of Zoology, 275:89-95.
(Location: IWMI HQ Call no: e-copy only Record No: H042478)
(0.57 MB)
Reports on malformations in amphibians due to trematode infections prompted this study on an endemic frog species in Sri Lanka. The effect of an infection with a monostome-type cercaria is reported here. Ten days post-hatch, tadpoles (Gosner stage 27) of the common hourglass treefrog Polypedates cruciger (Anura: Ranidae), were exposed to a monostome-type cercaria, in a dose-dependent manner, under laboratory conditions. Malformations, survival and growth of the tadpoles were monitored for four treatments having different doses of cercariae (control=0, low=16, intermediate=32 and high=48). The severity and the number of malformations varied depending on the dose of the infection. A higher percentage (90%) of malformations was observed at higher doses of cercariae. Overall, malformations in the limbs, spine and skin pigmentation were common after parasite exposure. Survival declined with increasing doses of parasite infections, declining to 88% in the high treatment group, although not statistically significant. The growth rates of tadpoles as measured by weight and snout to vent length showed that exposed individuals were significantly smaller and had higher variance in growth compared with that of the controls. Thus, this trematode infection significantly affected the growth and induced severe malformations in P. cruciger, under laboratory conditions. Such malformed tadpoles and adults may face high predation under natural conditions. Here, we present the first empirical evidence of the effect of a trematode infection on the development of malformations, growth and survivorship in an endemic amphibian species in Sri Lanka.
5 Eriyagama, Nishadi; Jinapala, K. 2014. Developing tools to link environmental flows science and its practice in Sri Lanka. In Castellarin, A.; Ceola, S.; Toth, E.; Montanari, A. (Eds.). Evolving water resources systems: understanding, predicting and managing water-society interactions: proceedings of the 6th IAHS-EGU International Symposium on Integrated Water Resources Management, Bologna, Italy, 4-6 June 2014. Wallingford, UK: International Association of Hydrological Sciences (IAHS). pp.204-209.
Environmental flows ; Equipment ; Water resources ; Water demand ; Ecosystems ; Rivers ; Developing countries / Sri Lanka / Mahaweli River / Ullapane / Peradeniya
(Location: IWMI HQ Call no: e-copy only Record No: H046587)
(1.14 MB)
The term “Environmental Flows (EF)” may be defined as “the quantity, timing and quality of water flows required to sustain freshwater and estuarine ecosystems and the human livelihoods and well-being that depend on these ecosystems”. It may be regarded as “water for nature” or “environmental demand” similar to crop water requirements, industrial or domestic water demand. The practice of EF is still limited to a few developed countries such as Australia, South Africa and the UK. In many developing countries EF is rarely considered in water resources planning and is often deemed “unimportant.” Sri Lanka, being a developing country, is no exception to this general rule. Although the country underwent an extensive irrigation/water resources development phase during the 1960s through to the 1980s, the concept of EF was hardly considered. However, as Sri Lanka’s water resources are being exploited more and more for human usage, ecologists, water practitioners and policymakers alike have realized the importance of EF in sustaining not only freshwater and estuarine ecosystems, but also their services to humans. Hence estimation of EF has been made mandatory in environmental impact assessments (EIAs) of all large development projects involving river regulation/water abstraction. Considering EF is especially vital under the rapid urbanization and infrastructure development phase that dawned after the end of the war in the North and the East of the country in 2009. This paper details simple tools (including a software package which is under development) and methods that may be used for coarse scale estimation of EF at/near monitored locations on major rivers of Sri Lanka, along with example applications to two locations on River Mahaweli. It is hoped that these tools will help bridge the gap between EF science and its practice in Sri Lanka and other developing countries.
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