Restoration and Creation of Freshwater and Estuarine Wetlands


The restoration and creation of freshwater and estuarine wetlands are important practices designed to increase wetland acreage and mitigate for the extensive losses of wetland area all over the world. Wetland restoration, defined as the reestablishment of wetlands where they once existed, and wetland creation, where entirely new wetlands are established in upland locations, require an understanding of hydrology, soils and landscape setting to foster the development of native biotic communities, including vegetation, invertebrates and amphibians. Restoration projects may take decades to fully develop; success may be measured by comparison of key indicators with natural wetlands.

Keywords: wetland restoration; wetland creation; aquatic plants; hydric soils; amphibians

Figure 1.

Examples of (a) freshwater wetland creation project in central Ohio, USA (with monitoring well shown in centre of open water area) and (b) estuarine wetland restoration project in an urban area near San Francisco Bay, CA, USA. Photos by (a) E Herbert and (b) S Fennessy.

Figure 2.

Zonation in estuarine wetlands showing gradients of salinity and elevation. Copyright 2004, Mitsch and Jorgensen , reprinted with permission of Wiley.

Figure 3.

Flooding acts as an environmental filter in this model of plant species composition in wetlands. Reproduced with permission of the Ecological Society of America from van der Valk .

Figure 4.

Comparison of total invertebrate taxa and total Chronomid taxa in a study of 9 natural and 10 restored wetlands. From Fennessy et al. .



Amon JP, Thompson CA, Carpenter QJ and Miner J (2002) Temperate zone fens of the glaciated Midwestern USA. Wetlands 22: 301–317.

Bedford BL (1996) The need to define hydrologic equivalence at the landscape scale for freshwater wetland mitigation. Ecological Applications 6: 57–68.

Craft C, Megonigal P, Broome S et al. (2003) The pace of ecosystem development of constructed Spartina alterniflora marshes. Ecological Applications 13: 1417–1432.

Fennessy MS, Cronk JK and Mitsch WJ (1994) Productivity and macrophyte community dynamics in created wetlands subjected to experimental hydrologic regimes. Ecological Engineering: The Journal of Restoration 3: 469–484.

Fennessy MS, Mack J, Rokosch A, Knapp M and Micacchion M (2004) Biogeochemical and hydrological investigations of natural and mitigation wetlands. Part 5, Integrated Wetland Assessment Program. Ohio Environmental Protection Agency Technical Bulletin. Division of Surface Water, Wetlands Ecology Unit. Columbus, OH (

Keddy PA (2000) Wetland Ecology: Principles and Conservation. Cambridge: Cambridge University Press.

Mitsch WJ and Gosselink JG (2000) Wetlands, 3rd edn. New York: Wiley.

Mitsch WJ and Jorgensen SE (2004) Ecological Engineering and Ecosystem Restoration. New York: Wiley.

Partridge T and Wilson J (1987) Salt tolerance of salt marsh plants of Otago, New Zealand. New Zealand Journal of Botany 25: 559–566.

Porej D, Micacchion M and Hetherington TE (2004) Core terrestrial habitat for conservation of local populations of salamanders and wood frogs in agricultural landscapes. Biological Conservation 120: 399–410.

van der Valk AG (1981) Succession in wetlands: a Gleasonian approach. Ecology 62: 688–696.

Zedler JB and Callaway JC (2000) Evaluating the progress of engineered tidal wetlands. Ecological Engineering 15: 211–225.

Zedler JB and Kercher S (2005) Wetland resources: status, trends, ecosystem services, and restorability. Annual Review of Environment and Resources 30: 39–74.

Further Reading

Bradshaw AD (1987) Restoration ecology: an acid test for ecology In: Jordan WRI, Gilpin E and Aber JD (eds) Restoration Ecology: A Synthetic Approach to Ecological Research. New York: Cambridge University Press.

Cronk JK and Fennessy MS (2001) Wetland Plants: Biology and Ecology. Boca Raton: Lewis Publishers.

Finlayson M and Moser M (1991) Wetlands. Oxford: International Waterfowl and Wetlands Research Bureau (IWRB), Facts on File Ltd.

Kusler JA and Kentula ME (1990) Wetland Creation and Restoration – the Status of the Science. Washington, DC: Island Press.

Maltby E (1986) Waterlogged Wealth: Why Waste the World's Wet Places? London: Earthscan Publications.

Middleton B (1999) Wetland Restoration: Flood Pulsing and Disturbance Dynamics. New York: Wiley.

Turner RE and Streever B (2002) Approaches to Coastal Wetland Restoration: Northern Gulf of Mexico. Den Hague, The Netherlands: SPB Academic Publishing.

Van der Valk AG (2006) The Biology of Freshwater Wetlands. Oxford: Oxford University Press.

Wheeler BD, Shaw SC, Fojt WJ and Robertson R (1995) Restoration of Temperate Wetlands. New York: Wiley.

Whigham DF, Dykyjová D and Hejný S (1993) Wetlands of the World: Inventory, Ecology and Management. The Netherlands: Kluwer Academic Publishers.

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Fennessy, M Siobhan, and Herbert, Ellen R(Apr 2008) Restoration and Creation of Freshwater and Estuarine Wetlands. In: eLS. John Wiley & Sons Ltd, Chichester. [doi: 10.1002/9780470015902.a0020470]