Coastal erosion as a natural resource management problem: An economic perspective

Landry, Craig (2010) Coastal erosion as a natural resource management problem: An economic perspective. In: Shifting Shorelines: Adapting to the Future,The 22nd International Conference of The Coastal Society , June 13-16, 2010 ,Wilmington, North Carolina,

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Official URL: http://nsgl.gso.uri.edu/coastalsociety/TCS22/paper...

Abstract

Unremitting waves and occasional storms bring dynamic forces to bear on the coast. Sediment flux results in various patterns of erosion and accretion, with an overwhelming majority (80 to 90 percent) of coastline in the eastern U.S. exhibiting net erosion in recent decades. Climate change threatens to increase the intensity of storms and raise sea level 18 to 59 centimeters over the next century. Following a lengthy tradition of economic models for natural resource management, this paper provides a dynamic optimization model for managing coastal erosion and explores the types of data necessary to employ the model for normative policy analysis. The model conceptualizes benefits of beach and dune sediments as service flows accruing to nearby residential property owners, local businesses, recreational beach users, and perhaps others. Benefits can also include improvements in habitat for beach- and dune-dependent plant and animal species. The costs of maintaining beach sediment in the presence of coastal erosion include expenditures on dredging, pumping, and placing sand on the beach to maintain width and height. Other costs can include negative impacts on the nearshore environment. Employing these constructs, an optimal control model is specified that provides a framework for identifying the conditions under which beach replenishment enhances economic welfare and an optimal schedule for replenishment can be derived under a constant sea level and erosion rate (short term) as well as an increasing sea level and erosion rate (long term). Under some simplifying assumptions, the conceptual framework can examine the time horizon of management responses under sea level rise, identifying the timing of shift to passive management (shoreline retreat) and exploring factors that influence this potential shift. (PDF contains 4 pages)

Item Type: Conference or Workshop Item
Title: Coastal erosion as a natural resource management problem: An economic perspective
Personal Creator/Author:
CreatorsEmail
Landry, Craiglandryc@ecu.edu
Date: 2010
Funders: National Oceanographic and Atmospheric Administration, U.S. EPA Coastal Management Branch, U.S. Geolgocial Survey, NOAA Sea Grant
Event Title: Shifting Shorelines: Adapting to the Future,The 22nd International Conference of The Coastal Society
Event Type: Conference
Event Location: Wilmington, North Carolina
Event Dates: June 13-16, 2010
Issuing Agency: The Coastal Society
Uncontrolled Keywords: TCS22
Subjects:
Earth Sciences
Item ID: 3925
Depositing User: Cynthia Murray
Date Deposited: 29 Jul 2010 20:17
Last Modified: 29 Jul 2010 20:17
URI: http://aquaticcommons.org/id/eprint/3925

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