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 < 1000 m3/capita) by 2030 and face overexploitation of water resources (water exploitation rate > 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.
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Notes
A long-term mean of 20 years was opted so as to smoothen the effect of rainfall variability and to match the methodology adopted by MAGICC/SCENGEN software which uses 20-year-long mean data to generate precipitation data. This will ease comparison between the current and the predicted freshwater vulnerability index.
References
Awash Basin Authority. (2015). Rainfall variability—Spatial rainfall variability. Retrieved August 19, 2017, from http://www.awba.gov.et/resources/facts-figures/rainfall-variability/.
Climate Research Unit, & NCSP. (2000). Using a climate scenario generator for vulnerability and adaptation assessments, Climate Research Unit, University of East Anglia, United Kingdom.
Cook, J., Oreskes, N., Doran, P. T., Anderegg, W. R. L., Verheggen, B., Maiback, E. W., et al. (2016). Consensus on consensus: A synthesis of consensus estimates on human-caused global warming. Environmental Research Letters, 11, 1–7.
Deitch, M. J., Sapundjieff, M. J., & Feirer, S. T. (2017). Characterizing precipitation variability and trends in the world’s mediterranean-climate areas. Water, 9, 259.
Eastman, J. R. (2015). Terrset manual. Worcester: Clark Labs.
Gungoa, V. (2016). Policy analysis and implementation for a new water policy: A case study of the Mauritian experience. In Global water safety conference, Philippines.
Huang, Y., & Cai, M. (2009). Methodologies guideline for vulnerability assessment of freshwater resources to environmental change. Nairobi: United Nations Environment Programme.
Iacovides, I. (2011). Water resources in cyprus: Endowments and water management practices. In P. Koundouri (Ed.), Water resources allocation: Policy and socioeconomic issues in cyprus—Global issues in water policy (pp. 11–21). Netherlands: Springer.
IPCC. (2014). Climate change 2014: Synthesis report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Geneva: IPCC.
Ketabchi, H., Mahmoodzadeh, D., Ataie-Ashtiani, B., & Simmons, C. T. (2016). Sea-level rise impacts on seawater intrusion in coastal aquifers: Review and integration. Journal of Hydrology, 535, 235–255.
Kusangaya, S., Warburton, M. L., Van Garderen, E. A., & Jewitt, G. P. W. (2014). Impacts of climate change on water resources in southern Africa: A review. Physics and Chemistry of the Earth, 67–69, 47–54.
Liu, W. C., & Liu, H. M. (2014). Assessing the impacts of sea level rise on salinity intrusion and transport time scales in a Tidal Estuary, Taiwan. Water, 6, 324–344.
Michelozzi, P., & De’donato, F. (2014). Climate changes, floods, and health consequences. Recenti Progressi in Medicina, 105, 48–50.
Molden, D. (2007). Water for food, water for life: A Comprehensive assessment of water management in agriculture. London: Earthscan.
Pacific Community. (2014). Water and sanitation—A critical issue for Pacific. Retrieved August 16, 2017, from http://reliefweb.int/report/world/water-and-sanitation-critical-development-issue-pacific.
Proag, V. (2006). Water resources management in Mauritius. European Water, 15, 45–57.
Ragen, A. K. (2013). Alleviating the water-stress situation in Mauritius. Journal of Institution of Engineers Mauritius. Retrieved September 20, 2015, from http://www.iemauritius.com/upload/files/water_stress_situation_(ragen).pdf.
Shan, Y., Yang, L., Perren, K., & Zhang, Y. (2015). Household water consumption: Insight from a survey in Greece. Procedia Eng., 119, 1409–1418.
Statistics Mauritius. (2002). Economic and social indicators—Environment statistics 2000. Retrieved November 18, 2016, from http://statsmauritius.govmu.org/English/statsbysubj/Documents/archive%20esi/Environment/ESI%200369/ESI%200369.pdf.
Statistics Mauritius. (2006). Energy and water statistics 2005. Retrieved November 18, 2016, from http://statsmauritius.govmu.org/English/Pages/cso/ei572/energy.pdf.
Statistics Mauritius. (2011). Digest of energy and water statistics 2010. Retrieved November 18, 2016, from http://statsmauritius.govmu.org/English/Documents/energy.pdf.
Statistics Mauritius. (2012). International travel and tourism statistics—Historical series. Retrieved December 13, 2016, from http://statsmauritius.govmu.org/English/statsbysubj/Pages/INTERNATIONAL-TRAVEL-and-TOURISM.aspx.
Statistics Mauritius. (2016a). Digest of energy and water statistics 2015. Retrieved November 18, 2016, from http://statsmauritius.govmu.org/English/Publications/Documents/Regular%20Reports/energy%20and%20water/Digest_EW_2015.pdf.
Statistics Mauritius. (2016b). Digest of international travel and tourism statistics 2015. Retrieved December 13, 2016, from http://statsmauritius.govmu.org/English/statsbysubj/Documents/Digest/Tourism/Digest_Tourism_2015.pdf.
Streefland, T. (2013). Creating a small island flood vulnerability tool: A case study of Mauritius. Amsterdam: Institute of Interdisciplinary Studies, University of Amsterdam.
UNEP International Environmental Technology Centre. (1998). Source book of alternative technologies for freshwater augmentation in small island developing states—Technical publication series. Osaka: UNEP International Environmental Technology Centre.
United Nations Economic Commission for Africa. (2011). Climate change and water resources of africa: challenges, opportunities and impacts. Retrieved March 23, 2017, from http://repository.uneca.org/bitstream/handle/10855/21058/Bib-20389.pdf?Sequence=1.
United Nations Environment Programme. (2012). Vulnerability assessment of freshwater resources to climate change: implications for shared water resources in the west asia region. Nairobi: United Nations Environment Programme.
UN Water. (2010). Climate change: The pivotal role of water. Retrieved March 14, 2017, from http://www.coalition-eau.org/wp-content/uploads/climate-change-adaptation-the-pivotal-role-of-water.pdf.
US EPA. (2016). Climate change impacts on water resources. Retrieved December 16, 2016, from https://www.epa.gov/environmental-topics.
Wigley, T. M. L. (2008). MAGICC/SCENGEN 5.3: User manual. Retrieved September 25, 2016, from http://www.cgd.ucar.edu/cas/wigley/magicc/userman5.3.v2.pdf.
World Bank. (2016). High and dry: Climate change, water and the economy, The World Bank, Washington, DC: The World Bank. License: Creative Commons Attribution CC BY 3.0 IGO.
World Bank. (2017). World Bank data. Retrieved July 24, 2017, from http://data.worldbank.org/.
World Economic Forum. (2015). Global risks 2015 (10th ed.). Geneva: World Economic Forum.
World Health Organisation. (2001). Water sanitation and health—Too much water: The health effects of floods. Retrieved July 12, 2017, from http://www.who.int/water_sanitation_health/emergencies/floodrought/en/index1.html.
World Water Assessment Programme. (2012). The United Nations World Water Development Report 4: Managing Water under Uncertainty and Risk, UNESCO, France.
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Boojhawon, A., Surroop, D. Impact of climate change on vulnerability of freshwater resources: a case study of Mauritius. Environ Dev Sustain 23, 195–223 (2021). https://doi.org/10.1007/s10668-019-00574-3
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DOI: https://doi.org/10.1007/s10668-019-00574-3