Your search found 3 records
1 Balmford, A.; Bruner, A.; Cooper, P.; Costanza, R.; Farber, S.; Green, R. E.; Jenkins, M.; Jefferiss, P.; Jessamy, V.; Madden, J.; Munro, K.; Myers, N.; Naeem, S.; Paavola, J.; Rayment, M.; Rosendo, S.; Roughgarden, J.; Trumper, K.; Turner, R. K. 2002. Economic reasons for conserving wild nature. Science, 297:950-953.
(Location: IWMI-HQ Call no: P 6101 Record No: H030790)
2 Peh, K. S.-H.; Thapa, I.; Basnyat, M.; Balmford, A.; Bhattarai, G. P.; Bradbury, R. B.; Brown, C.; Butchart, S. H. M.; Dhakal, M.; Gurung, H.; Hughes, F. M. R.; Mulligan, M.; Pandeya, B.; Stattersfield, A. J.; Thomas, D. H. L.; Walpole, M.; Merriman, J. C. 2016. Synergies between biodiversity conservation and ecosystem service provision: lessons on integrated ecosystem service valuation from a Himalayan protected area, Nepal. Ecosystem Services, 22(Part B):359-369. (Special issue: Integrated Valuation of Ecosystem Services: Challenges and Solutions). [doi: https://doi.org/10.1016/j.ecoser.2016.05.003]
Ecosystem services ; Biodiversity conservation ; Economic value ; Water quality ; Greenhouse gases ; Carbon ; Tourism ; Cost benefit analysis ; Land use ; Social aspects ; Valuation ; Assessment ; Decision making / Nepal / Himalayan Region / Shivapuri-Nagarjun National Park
(Location: IWMI HQ Call no: e-copy only Record No: H048023)
(2.17 MB)
We utilised a practical approach to integrated ecosystem service valuation to inform decision-making at Shivapuri-Nagarjun National Park in Nepal. The Toolkit for Ecosystem Service Site-based Assessment (TESSA) was used to compare ecosystem services between two alternative states of the site (protection or lack of protection with consequent changed land use) to estimate the net consequences of protection. We estimated that lack of protection would have substantially reduced the annual ecosystem service flow, including a 74% reduction in the value of greenhouse gas sequestration, 60% reduction in carbon storage, 94% reduction in nature-based recreation, and 88% reduction in water quality. The net monetary benefit of the park was estimated at $11 million year-1. We conclude that: (1) simplified cost-benefit analysis between alternative states can be usefully employed to determine the ecosystem service consequences of land-use change, but monetary benefits should be subject to additional sensitivity analysis; (2) both biophysical indicators and monetary values can be standardised using rose plots, to illustrate the magnitude of synergies and trade-offs among the services; and (3) continued biodiversity protection measures can preserve carbon stock, although the benefit of doing so remains virtual unless an effective governance option is established to realise the monetary values.
3 Ashagre, B. B.; Platts, P. J.; Njana, M.; Burgess, N. D.; Balmford, A.; Turner, R. K.; Schaafsma, M. 2018. Integrated modelling for economic valuation of the role of forests and woodlands in drinking water provision to two African cities. Ecosystem Services, 32(Part A):50-61. [doi: https://doi.org/10.1016/j.ecoser.2018.05.004]
Drinking water ; Water supply ; Water demand ; Urban areas ; Forests ; Woodlands ; Economic value ; Water costs ; Water users ; Ecosystem services ; Land use ; Erosion ; Hydrology ; Models ; Reservoirs ; Sediment ; Case studies / Africa / Tanzania / Dar es Salaam / Morogoro / Ruvu River / Mindu Reservoir
(Location: IWMI HQ Call no: e-copy only Record No: H048833)
(1.86 MB)
Rapidly growing economies often have high population growth, resulting in agricultural expansion in rural areas and increased water demand in urban areas. Conversion of forests and woodlands to agriculture may threaten safe and reliable water supply in cities. This study assesses the regulating functions and economic values of forests and woodlands in meeting the water needs of two major cities in Tanzania and proposes an integrated modelling approach with a scenario-based analysis to estimate costs of water supply avoided by forest conservation. We use the process-based hydrological Soil and Water Assessment Tool (SWAT) to simulate the role of woody habitats in the regulation of hydrological flow and sediment control. We find that the forests and woodlands play a significant role in regulating sediment load in rivers and reducing peak flows, with implications for the water supply from the Ruvu River to Dar es Salaam and Morogoro. A cost-based value assessment under water treatment works conditions up to 2016 suggests that water supply failure due to deforestation would cost Dar es Salaam USD 4.6–17.6 million per year and Morogoro USD 308 thousand per year. Stronger enforcement of forest and woodland protection in Tanzania must balance water policy objectives and food security.
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