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The Impact of Aquatic Salinization on Fish Habitats and Poor Communities in a Changing Climate: Evidence from Southwest Coastal Bangladesh

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  • Dasgupta, Susmita
  • Huq, Mainul
  • Mustafa, Md. Golam
  • Sobhan, Md. Istiak
  • Wheeler, David

Abstract

Fisheries constitute an important source of livelihoods for tens of thousands of poor people in the southwest coastal region of Bangladesh, and they supply a significant portion of protein for millions. Among the various threats fisheries in the southwest coastal region will face because of climate change, adverse impacts from increased aquatic salinity caused by sea level rise will be one of the greatest challenges. This paper investigates possible impacts of climate change on aquatic salinity, fish species habitats, and poor communities using the salinity tolerance ranges of 83 fish species consumed in the region and aquatic salinity in 27 alternative scenarios of climate change in 2050. The results provide striking evidence that projected aquatic salinization may have an especially negative impact on poor households in the region. The estimates indicate that areas with poor populations that lose species are about six times more prevalent than areas gaining species.

Suggested Citation

  • Dasgupta, Susmita & Huq, Mainul & Mustafa, Md. Golam & Sobhan, Md. Istiak & Wheeler, David, 2017. "The Impact of Aquatic Salinization on Fish Habitats and Poor Communities in a Changing Climate: Evidence from Southwest Coastal Bangladesh," Ecological Economics, Elsevier, vol. 139(C), pages 128-139.
    • Handle: RePEc:eee:ecolec:v:139:y:2017:i:c:p:128-139
    DOI: 10.1016/j.ecolecon.2017.04.009
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    1. Belton, B. & Karim, M. & Thilsted, S. & Murshed-E-Jahan, K. & Collis, W. & Phillips, M., 2011. "Review of aquaculture and fish consumption in Bangladesh," Monographs, The WorldFish Center, number 39574, April.
    2. Dasgupta,Susmita & Huq,Mainul & Mustafa,Md. Golam & Sobhan,Md Istiak & Wheeler,David R., 2016. "Impact of climate change and aquatic salinization on fish habitats and poor communities in southwest coastal Bangladesh and Bangladesh Sundarbans," Policy Research Working Paper Series 7593, The World Bank.
    3. Susmita Dasgupta & Md. Moqbul Hossain & Mainul Huq & David Wheeler, 2016. "Facing The Hungry Tide: Climate Change, Livelihood Threats, And Household Responses In Coastal Bangladesh," Climate Change Economics (CCE), World Scientific Publishing Co. Pte. Ltd., vol. 7(03), pages 1-25, August.
    4. Dasgupta,Susmita & Sobhan,Istiak & Wheeler,David J., 2016. "Impact of climate change and aquatic salinization on mangrove species and poor communities in the Bangladesh Sundarbans," Policy Research Working Paper Series 7736, The World Bank.
    5. Alam, Md. Ferdous & Thomson, Kenneth J., 2001. "Current constraints and future possibilities for Bangladesh fisheries," Food Policy, Elsevier, vol. 26(3), pages 297-313, June.
    6. Toufique, Kazi Ali & Belton, Ben, 2014. "Is Aquaculture Pro-Poor? Empirical Evidence of Impacts on Fish Consumption in Bangladesh," World Development, Elsevier, vol. 64(C), pages 609-620.
    7. Azizur Rahman Khan, 2015. "The Economy of Bangladesh," Palgrave Macmillan Books, Palgrave Macmillan, number 978-1-137-54974-7.
    8. Mustafa, M.G., 2003. "Trophic model of the coastal ecosystem in the waters of Bangladesh, Bay of Bangal," Monographs, The WorldFish Center, number 37738, April.
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    Cited by:

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    2. Satyakti, Yayan & Rum, Irlan Adiatma & Pamungkas, Eksa & Sihaloho, Estro Dariatno & Rijoly, Jacobus Cliff Diky, 2017. "Analyzing Island Province Policy on Poverty Alleviation in Maluku Province," MPRA Paper 100525, University Library of Munich, Germany.
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    More about this item

    Keywords

    Climate change; Aquatic salinization; Fish habitats; Poverty; Bangladesh;
    All these keywords.

    JEL classification:

    • Q22 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Fishery
    • Q25 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Water
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming
    • Q57 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Ecological Economics

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