Impact of climate change on vulnerability of freshwater resources: a case study of Mauritius

Anuksha Boojhawon () and Dinesh Surroop ()
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Anuksha Boojhawon: University of Mauritius
Dinesh Surroop: University of Mauritius

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2021, vol. 23, issue 1, No 10, 195-223

Abstract: Abstract Freshwater resource availability in SIDS, including Mauritius, is on the verge of becoming a major constraint to socio-economic development. A freshwater vulnerability assessment was undertaken for the period of 2000–2015 to understand the present vulnerability of the water systems in Mauritius and a future vulnerability estimation. Currently, the freshwater sector has been classified as a moderately vulnerable sector with a Freshwater Vulnerability Index (FVI) of 0.36–0.38 derived from a resource availability of 1091–1184 m3/capita, a coefficient of rainfall variation of 0.206–0.220, a water exploitation rate of 72–76% and ecological degradation of 30–39% for the period of 2000–2015. For the period of 2020–2050 under a business as usual scenario, the freshwater sector remained in a moderate-vulnerability region whereby the water exploitation rate was found to be the most affected vulnerability parameter with an increase to 95% exploitation by 2050. Under the effects of climate change, the FVI increased to a range of 0.38–0.44 indicating a shift from moderate- to high-vulnerability region and the findings also indicate that the country is likely to enter into a water scarcity region (water availability of 100%) by 2040. For all three scenarios, the resource stress category showed the highest contribution on the calculated FVI with a share of contribution of 33–38% to the current FVI, 34–38% to the predicted FVI for a business as usual scenario and 40–43% to the predicted FVI under the effects of climate change.

Keywords: Freshwater Vulnerability Index (FVI); Climate change; Water; Mauritius (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s10668-019-00574-3

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