Your search found 15 records
1 Silva, E. I. L. 1996. Water quality of Sri Lanka: A review on twelve water bodies. Kandy, Sri Lanka: IFS. vii, 141p.
Water resources ; Water quality ; Rivers ; Estuaries ; Lagoons ; Reservoirs ; Tanks ; Canals ; Watersheds ; Land use ; River basins ; Water pollution / Sri Lanka / Kelani River / Negombo Lagoon / Bolgoda Lake / Koggala Lagoon / Kotmale Reservoir / Kala Wewa / Rajangana Tank / Kandy Lake / Meda Ela / Hamilton Canal / Hikkaduwa Marine Sanctuary
(Location: IWMI-HQ Call no: 333.91 G744 SIL Record No: H019963)
2 Sri Lanka. Central Environmental Authority. 2004. Strategic zoning. Colombo, Sri Lanka: CEA. iv, 20p.
Wetlands ; Ecosystems ; Social participation ; Political aspects ; Conflict / Sri Lanka / Muthurajawela / Negombo Lagoon
(Location: IWMI-HQ Call no: 574.5 G744 SRI Record No: H035235)
3 Sri Lanka. Central Environmental Authority. 2004. Income enhancement related to integrated resource management. Colombo, Sri Lanka: CEA. iv, 31p.
Wetlands ; Income generation ; Households ; Development projects ; Resource management ; Villages ; Case studies / Sri Lanka / Muthurajawela / Negombo Lagoon
(Location: IWMI-HQ Call no: 574.5 G744 SRI Record No: H035236)
4 Sri Lanka. Central Environmental Authority. 2004. Participatory fishery management planning. Colombo, Sri Lanka: CEA. iv, 37p.
Fisheries ; Lagoons ; Participatory management ; Social participation / Sri Lanka / Negombo Lagoon / Muthurajawela Marsh
(Location: IWMI-HQ Call no: 574.5 G744 SRI Record No: H035237)
5 Nagabhatla, Nidhi; Finlayson, Max; Senaratna Sellamuttu, Sonali; Zomer, Robert; Diphoorn, Luuk. 2006. Wetland dynamics: Links with spatial, ecological and socio-economic related issues in the western coastal belt of Sri Lanka. In Ninth Biennial Conference of The International Society for Ecological Economics “Ecological Sustainability and Human Well-being,” held at the India Habitat Centre, New Delhi, India, 16-18 December 2006. New Delhi, India: Indian Society for Ecological Economics. (E-proceedings) 16p.
Wetlands ; Assessment ; Lagoons ; Marshes ; Ecology ; Ecosystems ; Social aspects ; Economic aspects / Sri Lanka / Muthurajawela Marsh / Negombo Lagoon
(Location: IWMI-HQ Call no: IWMI 333.91 G744 NAG Record No: H039638)
(7.41 MB)
6 Nagabhatla, Nidhi; Senaratna Sellamuttu, Sonali. 2007. Understanding and documenting cross-disciplinary research in wetland systems. Water Matters: news of IWMI research in Sri Lanka, 3:3.
(Location: IWMI HQ Call no: IWMI 577.68 G744 IWM Record No: H040539)
7 Nagabhatla, Nidhi; Finlayson, Max; Senaratna Sellamuttu, Sonali; Wickramasuriya, R.; Pattnaik, C.; Narendra Prasad, S.; Gunawardena, A. 2007. Using geospatial tools to overcoming sustainability concerns for wetland ecosystem. Paper presented at the 28th Asian Conference on Remote Sensing, Kuala Lumpur, Malaysia, 12-16 November 2007. 8p.
Wetlands ; Ecosystems ; Analysis ; Remote sensing / Sri Lanka / India / Muthurajawela Marsh / Negombo Lagoon / Gujarat / Tamil Nadu / Lake Kolleru
(Location: IWMI HQ Call no: IWMI 333.91816 G744 NAG Record No: H040565)
http://www.a-a-r-s.org/acrs/proceeding/ACRS2007/Papers/TS17.2.pdf
https://vlibrary.iwmi.org/pdf/H040565.pdf
https://vlibrary.iwmi.org/pdf/H040565.pdf
(1.32 MB)
Wetlands are amongst the earth’s most productive ecosystem and directly and indirectly support millions of people by providing ecosystem services or benefits, many through maintenance of the hydrological system. Land use changes in developed and developing countries are resulting in gradual elimination of wetlands at global and regional scales. Moreover, anthropogenic pressure to convert wetlands for other land uses is reported to be increasing significantly from developing countries. The Convention on Wetlands is an international initiative that provides a framework for wetland inventory, assessment, monitoring and wise use worldwide. In support of the Convention a multi-scalar wetland inventory was developed by IWMI. At the global level, the distribution of Ramsar sites has been analysed, focusing on the role and impact of agriculture activities. At the regional scale, the role of geospatial data sets has been tested for identifying wetlands in India. In addition a multiple-scale site analysis, using earth observation data and GIS, is underway to detect trends in wetland use for a coastal lagoon-marsh wetland complex in Sri Lanka and for the inland fresh water Lake Kolleru, India. For the regional analysis, two different datasets viz., national wetland inventory data (from SACON-30m) and GIAM (Global Irrigated Area Map-500 m) were used. The preliminary analysis reflects 57 % overlap in wetland area for Gujarat and 10 % for Tamil Nadu. The geospatial change analyses (studied using IDRISI-Andes) in Sri Lanka reflect the loss of deep water lagoon(5%), littoral forest (2 %.) and marsh (1%) due to sedimentation, infilling, vegetation clearance and expansion in built up areas; hence identifying urban development, pollution and the population pressure as the primary ‘indicators of stress’. In Kolleru, the temporal spatial analysis addresses the balance in conservation measures and livelihood dynamics. We intend to integrate the biophysical and socio-economic parameters to explain the role of earth resource satellite data and geospatial tools for sustainable management of wetland systems.
8 Rebelo, Lisa-Maria; Finlayson, C. Max; Nagabhatla, Nidhi. 2009. Remote sensing and GIS for wetland inventory, mapping and change analysis. Journal of Environmental Management, 90:2144-2153. [doi: https://doi.org/10.1016/j.jenvman.2007.06.027]
Remote sensing ; GIS ; Wetlands ; Surveys ; Mapping ; Case studies ; Capacity building ; Stakeholders / Sri Lanka / Southern Africa / Malawi / Muthurajawela Marsh / Negombo Lagoon / Lake Chilwa
(Location: IWMI HQ Call no: e-copy only Record No: H042129)
(0.93 MB)
A multiple purpose wetland inventory is being developed and promoted through partnerships and specific analyses at different scales in response to past uncertainties and gaps in inventory coverage. A partnership approach is being promoted through the Ramsar Convention on Wetlands to enable a global inventory database to be compiled from individual projects and analyses using remote sensing and GIS. Individual projects that are currently part of this global effort are described. They include an analysis of the Ramsar sites’ database to map the distribution of Ramsar sites across global ecoregions and to identify regions and wetland types that are under-represented in the database. Given the extent of wetland degradation globally, largely due to agricultural activities, specific attention is directed towards the usefulness of Earth Observation in providing information that can be used to more effectively manage wetlands. As an example, a further project using satellite data and GIS to quantify the condition of wetlands along the western coastline of Sri Lanka is described and trends in land use due to changes in agriculture, sedimentation and settlement patterns are outlined. At a regional scale, a project to map and assess, using remote sensing, individual wetlands used for agriculture in eight countries in southern Africa is also described. Land cover and the extent of inundation at each site is being determined from a multi-temporal data set of images as a base for further assessment of land use change. Integrated fully within these analyses is the development of local capacity to plan and undertake such analyses and in particular to relate the outcomes to wetland management and to compile data on the distribution, extent and condition of wetlands globally.
9 Senaratna Sellamuttu, Sonali; de Silva, Sanjiv; Nguyen Khoa, Sophie; Samarakoon, Jayampathy. 2009. Lessons from elsewhere: seven cases from around the world. In Wetlands International. Planting trees to eat fish: field experiences in wetlands and poverty reduction. Wageningen, Netherlands: Wetlands International. pp.65-77.
Wetlands ; Case studies ; Project management ; Development projects ; Poverty ; Social aspects ; Credit ; Income ; Ecology ; Grasslands ; Lagoons ; Conflict ; Food security / South Africa / Vietnam / China / Sri Lanka / Brazil / Nigeria / India / Lake Fundudzi / Phu My wetland / Cao Hai wetland / Negombo Lagoon / Muthurajawela Marsh / Mamiraua wetlands / Hadejia Nguru wetlands / Bhoj wetlands
(Location: IWMI HQ Call no: 333.918 G000 WET Record No: H042244)
http://global.wetlands.org/LinkClick.aspx?fileticket=9UjRTWaCmoI%3d&tabid=56
https://vlibrary.iwmi.org/pdf/H042244.pdf
https://vlibrary.iwmi.org/pdf/H042244.pdf
(0.10 MB)
10 Nagabhatla, Nidhi; Finlayson, Max; Senaratna Sellamuttu, Sonali. 2009. Spatial dynamics versus social dynamics: understanding trade offs in ecological and socio-economic systems. In Malhotra, G. (Ed.). Environmental growth: a global perspective. New Delhi, India: Macmillan. pp.16-31.
Wetlands ; Lagoons ; Marshes ; Ecology ; Land cover ; Environmental effects ; Surveys / Sri Lanka / Muthurajawela Marsh / Negombo Lagoon
(Location: IWMI HQ Call no: e-copy only Record No: H042398)
(2.28 MB)
11 Nagabhatla, N.; Senaratna Sellamuttu, Sonali; Bobba, A. G.; Finlayson, M.; Wickramasuriya, R.; van Brakel, Martin; Prasad, S. N.; Pattanaik, C. 2012. Insight to Ecosystem Based Approach (EBA) at landscape level using a geospatial medium. Journal of the Indian Society of Remote Sensing, 40(1):47-64. [doi: https://doi.org/10.1007/s12524-011-0080-8]
Ecosystems ; Wetlands ; Landscape ; Multiple use ; Agroecology ; GIS ; Remote sensing ; Social aspects / Sri Lanka / India / Lake Kolleru / Muthurajawela Marsh / Negombo Lagoon
(Location: IWMI HQ Call no: e-copy only Record No: H044044)
(0.95 MB)
Ecosystem based approach (EBA) for resource management is a concerted, environmentally tuned and an integrated framework that holistically addresses the ecological character of the natural resource, its societal benefit spectrum and its environmental functions. In this paper, the EBA concept is closely linked with the emerging concept of multiple use systems (MUS) while taking account of environmental, economic, and social factors that govern the ecosystems services and benefits. We elucidate a multi-scalar approach and multiple case studies to understand EBA particularly in context of a wetlandscape. At the global scale, Ramsar sites of international importance are geospatially analyzed with reference to their agro-ecology and biodiversity. At regional scale, the agrarian use of inland wetlands in India was re-evaluated taking account of database from a recent inland wetland inventory. At the local scale, drawing on the landscape characterization and the ecological economics for fresh water Lake Kolleru in India and the Muthurajawela Marsh-Negombo Lagoon coastal marsh in Sri Lanka, we illustrate some of the practical challenges in balancing wetland conservation, development needs and the overall well-being of local people. We also discuss how variability in the scale, geophysical characteristics of the site and the data availability confines the ability to simplify a single complete approach to address issues in complex ecosystem such as wetlands. All levels of the study are supported by a variety of earth observation data and the geographical information system (GIS) tools. The site level analysis also draws on socio-economic assessment tools.
12 Senaratna Sellamuttu, Sonali; Finlayson, C. M.; Nagabhatla, N.; Diphoorn, L. 2011. Linkages between changes in land cover (use) patterns, local perceptions and livelihoods in a coastal wetland system in Sri Lanka. Journal of the National Science Foundation of Sri Lanka, 39(4):391-402.
Land cover ; Land use ; Coastal area ; Natural resources ; Wetlands ; Ecosystems ; Marshes ; Environmental effects ; Social aspects ; Economic aspects ; Models ; Senses ; GIS / Sri Lanka / Muthurajawela-Negombo Wetland / Muthurajawela Marsh / Negombo Lagoon
(Location: IWMI HQ Call no: e-copy only Record No: H044636)
(0.41 MB)
The Muthurajawela-Negombo wetland system in Sri Lanka provides critical ecosystem services for local people. The wetland has, however, undergone considerable ecological change over the past few decades. A multi-scale, inter-disciplinary approach that combined geospatial analyses with livelihoods analyses was used to assess environmental change in the wetland and the impact of this change on local livelihoods. While a geospatial model was used to determine broad changes in land use patterns in the wetland, an in-depth case study covering one village was conducted, using local perceptions to explore the inter-linkages between environmental change and livelihood systems at the household level. The findings of this study suggest that there have been significant changes in the wetland cover/use patterns during the period under investigation and that these changes have been observed and experienced by local communities. There are differences in local perceptions on whether these changes are for the better or worse. This may be linked to whether the land cover types are directly accessed and used in the household livelihood system, and to the geographic location of the land cover types in relation to the village. The findings indicate the usefulness of adopting this type of approach where both conservation and development needs are considered to address environmental concerns and related livelihood issues in wetlands.
13 Wattage, P. 2003. Total value of wetland conservation: a study on the Muthurajawela Marsh and Negambo Lagoon. Vidya: the Quarterly Newsletter of the National Science Foundation of Sri Lanka, 5(4):8-9.
Wetlands ; Lagoons ; Marshes ; Environmental degradation ; Economic aspects ; Valuation / Sri Lanka / Muthurajawela Marsh / Negombo Lagoon
(Location: IWMI HQ Call no: e-copy only Record No: H044720)
(0.21 MB)
14 Nagabhatla, N.; Finlayson, C. M.; Senaratna Sellamuttu, Sonali. 2012. Assessment and change analyses (1987-2002) for tropical wetland ecosystem using earth observation and socioeconomic data. European Journal of Remote Sensing, 45:215-232.
Wetlands ; Ecosystems ; Coastal area ; Tropical zones ; Marshes ; Lagoons ; Rain ; Analytical methods ; Data analysis ; Land use ; Land cover ; Socioeconomic environment ; Vegetation / Sri Lanka / Muthrajawela Marsh / Negombo Lagoon
(Location: IWMI HQ Call no: e-copy only Record No: H044959)
http://server-geolab.agr.unifi.it/public/completed/2012_EuJRS_45_215_232_Nagabhatla.pdf
https://vlibrary.iwmi.org/pdf/H044959.pdf
https://vlibrary.iwmi.org/pdf/H044959.pdf
(2.74 MB) (2.80MB)
The two components of the study reflect assessment and change analysis of a tropical wetland in Sri Lanka. The first section explains spatial classification using pixel level-disaggregated image analysis and refined aggregated image analysis and comparison of information extracted by all methods to analyse a better classifier. The second section illustrates change analysis calibrating the land change modeller (LCM) [IDRISI-Andes]. Key observations: a) visual interpretation provides comprehensive blueprint of the wetlandscape compared to supervised and unsupervised classifiers b) change in landscape pattern reflect substantial transition in wetland use. Validation using field coordinates and socioeconomic data showed kappa value (%) of 87.
15 Samarakoon, J.; van Zon, H. (Eds.) 1991. Environmental profile of Muthurajawela and Negombo lagoon. Colombo, Sri Lanka: Greater Colombo Economic Commission (GCEC); Arnhem, Netherlands: Euroconsult. 173p.
Environmental protection ; Water management ; Hydrology ; Climatic data ; Drainage systems ; Swamps ; Natural resources ; Ecosystems ; Vegetation ; Aquatic plants ; Mangroves ; Marshes ; Lagoons ; Mammals ; Birds ; Reptiles ; Amphibians ; Fishes ; Invertebrates ; Geology ; Soils ; Socioeconomic environment ; Sustainable development ; Public health ; Infrastructure ; Industrialization ; Corporate culture ; Urbanization ; Land use ; Agricultural development ; Fisheries ; Aquaculture ; Legal aspects / Sri Lanka / Negombo Lagoon / Muthurajawela
(Location: IWMI HQ Call no: e-copy SF Record No: H047341)
(0.27 MB)
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