The role of ecosystems in coastal protection: Adapting to climate change and coastal hazards

• Published in: Ocean & coastal management Vol. 90; pp. 50 - 57
• Main Authors: Spalding, Mark D., Ruffo, Susan, Lacambra, Carmen, Meliane, Imèn, Hale, Lynne Zeitlin, Shepard, Christine C., Beck, Michael W.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-03-2014
• ISSN: 0964-5691; 1873-524X
• DOI: 10.1016/j.ocecoaman.2013.09.007

Coastal ecosystems, particularly intertidal wetlands and reefs (coral and shellfish), can play a critical role in reducing the vulnerability of coastal communities to rising seas and coastal hazards, through their multiple roles in wave attenuation, sediment capture, vertical accretion, erosion reduction and the mitigation of storm surge and debris movement. There is growing understanding of the array of factors that affect the strength or efficacy of these ecosystem services in different locations, as well as management interventions which may restore or enhance such values. Improved understanding and application of such knowledge will form a critical part of coastal adaptation planning, likely reducing the need for expensive engineering options in some locations, and providing a complementary tool in hybrid engineering design. Irrespective of future climate change, coastal hazards already impact countless communities and the appropriate use of ecosystem-based adaptation strategies offers a valuable and effective tool for present-day management. Maintaining and enhancing coastal systems will also support the continued provision of other coastal services, including the provision of food and maintenance of coastal resource dependent livelihoods.
•Coastal communities are vulnerable to coastal hazards and impacts of climate change.•Reviews show intertidal wetlands and reefs protect coasts in a variety of ways.•Drivers of variance in protection levels can be identified from existing research.•Coastal ecosystems can provide effective tools for coastal protection and adaptation.