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Coastal dynamics and adaptation to uncertain sea level rise: Optimal portfolios for salt marsh migration

Orencio Duran Vinent, Robert Johnston (), Matthew L. Kirwan, Anke Leroux () and Vance L. Martin

Journal of Environmental Economics and Management, 2019, vol. 98, issue C

Abstract: The sustainability of dynamic natural systems often depends on their capacity to adapt to uncertain climate-related changes, where different management options may be combined to facilitate this adaptation. Salt marshes exemplify such a system. Marsh sustainability under rapid sea level rise requires the preservation of transgression zones - undeveloped uplands onto which marshes migrate. Whether these uplands eventually become marsh depends on uncertain sea level rise and natural dynamics that determine migration onto different land types. Under conditions such as these, systematically diversified management actions generally outperform ad hoc or non-diversified alternatives. This paper develops the first adaptation portfolio model designed to optimize the benefits of a migrating coastal system. Results are illustrated using a case study of marsh conservation in Virginia, USA. Results suggest that models of this type can enhance adaptation benefits beyond those available through current approaches.

Keywords: Benefit; Diversification; Risk; Spatial; Climate change; Wetland; Optimal conservation; Geomorphology (search for similar items in EconPapers)
Date: 2019
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Working Paper: Coastal Dynamics and Adaptation to Uncertain Sea Level Rise: Optimal Portfolios for Salt Marsh Migration (2019) Downloads
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Persistent link: https://EconPapers.repec.org/RePEc:eee:jeeman:v:98:y:2019:i:c:s0095069618304248

DOI: 10.1016/j.jeem.2019.102262

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Journal of Environmental Economics and Management is currently edited by M.A. Cole, A. Lange, D.J. Phaneuf, D. Popp, M.J. Roberts, M.D. Smith, C. Timmins, Q. Weninger and A.J. Yates

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