What is Managed Realignment?

Part of the SpringerBriefs in Environmental Science book series (BRIEFSENVIRONMENTAL)


Many definitions of managed realignment exist. The understanding of what the term actually represents in practice has evolved through time and varies regionally, across sectors and among practitioners. A common understanding of managed realignment is further complicated by the use of other related terms; sometimes synonymous with managed realignment while at other times reflecting different concepts. Terms such as managed retreat, setback, regulated tidal exchange, depoldering have all being used in the literature associated with managed realignment, many times inconsistently. The lack of clarity in the use of terminology has contributed to negative connotations expressed by some stakeholders and the general public. This chapter clarifies the terminology currently in use and proposes a wider definition of managed realignment so it can be applicable to encompass the many forms of implementation adopted worldwide. Within this broader context, managed realignment becomes a general term that can be used to describe collectively the many mechanisms implemented to allow coastlines to evolve more flexibly with the objective of promoting more sustainable flood and erosion risk management.


Coastal Habitat Flood Risk Management Intertidal Habitat Integrate Coastal Zone Management Flood Defence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. Abbott, T. (2013). Shifting shorelines and political winds—The complexities of implementing the simple idea of shoreline setbacks for oceanfront developments in Maui, Hawaii. Ocean & Coastal Management, 73, 13–21.CrossRefGoogle Scholar
  2. Alexander, K. S., Ryan, A., & Measham, T. G. (2012). Managed retreat of coastal communities: Understanding responses to projected sea level rise. Journal of Environmental Planning and Management, 55(4), 409–433.CrossRefGoogle Scholar
  3. Badley, J., & Allcorn, R. I. (2006). Changes in bird use following the managed realignment at Freiston Shore RSPB Reserve, Lincolnshire, England. Conservation Evidence, 3, 102–105.Google Scholar
  4. Beauchard, O. (2012). Tidal freshwater habitat restoration through controlled reduced tide system: A multi-level assessment. Ph.D. thesis, University of Antwerp, University Press Antwerp.Google Scholar
  5. Beauchard, O., Jacobs, S., Cox, T. J. S., Maris, T., Vrebos, D., Van Braeckel, A., & Meire, P. (2011). A new technique for tidal habitat restoration: Evaluation of its hydrological potentials. Ecological Engineering, 37, 1849–1858.CrossRefGoogle Scholar
  6. Beauchard, O., Jacobs, S., Ysebaert, T., & Meire, P. (2013). Sediment macroinvertebrate community functioning in impacted and newly-created tidal freshwater habitats. Estuarine, Coastal and Shelf Science, 120, 21–32.CrossRefGoogle Scholar
  7. Blackwell, M. S. A., Yamulki, S., & Bol, R. (2010). Nitrous oxide production and denitrification rates in estuarine intertidal saltmarsh and managed realignment zones. Estuarine, Coastal and Shelf Science, 87(4), 591–600.CrossRefGoogle Scholar
  8. Bowron, T., Neatt, N., van Proosdij, D., Lundholm, J., & Graham, J. (2009). Macro-tidal salt marsh ecosystem response to culvert expansion. Restoration Ecology, 19(3), 307–322.CrossRefGoogle Scholar
  9. Brand, L. A., Smith, L. M., Takekawa, J. Y., Athearn, N. D., Taylor, K., Shellenbarger, G. G., Schoellhamer, D. H., & Spenst, R. (2012). Trajectory of early tidal marsh restoration: Elevation, sedimentation and colonization of breached salt ponds in the northern San Francisco Bay. Ecological Engineering, 42, 19–29.CrossRefGoogle Scholar
  10. Chang, Y. H., Scrimshaw, M. D., Emmerson, R. H. C., & Lester, J. N. (1998). Geostatistical analysis of sampling uncertainty at the Tollesbury Managed Retreat site in Blackwater Estuary, Essex, UK: Kriging and cokriging approach to minimise sampling density. Science of the Total Environment, 221, 43–57.CrossRefGoogle Scholar
  11. Committee on Climate Change. (2013). Managing the land in a changing climate. Chapter 5: Regulating services—Coastal habitats (pp. 92–107). Accessed 1 Dec 2013.
  12. Cooper, N. J. (2003). The use of ‘managed retreat‘ in coastal engineering. Proceedings of the institution of civil engineering, engineering sustainability, 156(ES2), 101–110.Google Scholar
  13. Cox, T., Maris, T., De Vleeschauwer, P., De Mulder, T., Soetaert, K., & Meire, P. (2006). Flood control areas as an opportunity to restore estuarine habitat. Ecological Engineering, 28, 55–63.CrossRefGoogle Scholar
  14. Defra (Department for Environment, Food and Rural Affairs). (2002). Managed realignment review. Policy research project FD 2008, Flood and Coastal Defence R & D Programme. Accessed 10 Jan 2014.
  15. Defra (Department for Environment, Food and Rural Affairs). (2005). Making space for water—Taking forward a new Government strategy for flood and coastal erosion risk management in England. First Government response to the autumn 2004 consultation exercise. London.Google Scholar
  16. Defra (Department for Environment, Food and Rural Affairs). (March, 2006). Shoreline management plan guidance. Volume 1: Aims and requirements. Accessed 29th Dec 2013.
  17. Ducrotoy, J. P., & Elliott, M. (2006). Recent developments in estuarine ecology and management. Marine Pollution Bulletin, 53, 1–4.CrossRefGoogle Scholar
  18. Elliott, M., & Cutts, N. D. (2004). Marine habitats: Loss and gain, mitigation and compensation. Marine Pollution Bulletin, 49, 671–674.CrossRefGoogle Scholar
  19. Emmerson, R. H. C., Manatunge, J. M. A., Macleod, C. L., & Lester, J. N. (1997). Tidal exchanges between orplands managed retreat site and the blackwater estuary, Essex. Water and Environment Journal, 11, 363–372.CrossRefGoogle Scholar
  20. Esteves, L. S. (2013). Is managed realignment a sustainable long-term coastal management approach? Journal of Coastal Research, Special Issue, 65(1), 933–938.CrossRefGoogle Scholar
  21. Esteves, L. S., & Thomas, K. (2014). Managed realignment in practice in the UK: Results from two independent surveys. Journal of Coastal Research, Special Issue, 70, 407–413.Google Scholar
  22. French, P. W. (2001). Coastal defences: Processes, problems and solutions. London: Routledge.Google Scholar
  23. French, P. W. (2004). Coastal and estuarine management. London: Routledge.Google Scholar
  24. French, P. W. (2006). Managed realignment—The developing story of a comparatively new approach to soft engineering. Estuarine, Coastal and Shelf Science, 67(3), 409–423.CrossRefGoogle Scholar
  25. Goeldner-Gianella, L. (2007). Dépoldériser en Europe occidentale. Annales de géographie, 656, 339–360.Google Scholar
  26. Hobson, K., & Niemeyer, S. (2011). Public responses to climate change: The role of eliberation in building capacity for adaptive action. Global Environmental Change, 21(3), 957–971.CrossRefGoogle Scholar
  27. Jackson, N. L., & Nordstrom, K. F. (2013). Removing shore protection structures to facilitate migration of landforms and habitats on the bayside of a barrier spit. Geomorphology, 199, 179–191.CrossRefGoogle Scholar
  28. Jacobs, S., Beauchard, O., Struyf, E., Cox, T., Maris, T., & Meire, P. (2009). Restoration of tidal freshwater vegetation using controlled reduced tide (CRT) along the Schelde Estuary (Belgium). Estuarine, Coastal and Shelf Science, 85(3), 368–376.CrossRefGoogle Scholar
  29. Leggett, D. J., Cooper, N., & Harvey, R. (2004). Coastal and estuarine managed realignment—Design. CIRIA C628D. London: CIRIA, 215 p (ISBN: 978-0-86017-628-2). Google Scholar
  30. Lorenzone, I., Nicholson-Cole, S., & Whitmarsh, L. (2007). Barriers perceived to engaging with climate change among the UK public and their policy implications. Global Environmental Change, 17, 445–459.CrossRefGoogle Scholar
  31. Macleod, C. L., Scrimshaw, M. D., Emmerson, R. H. C., Chang, Y. H., & Lester, J. N. (1999). Geochemical changes in metal and nutrient loading at orplands farm managed retreat site, Essex, UK (April 1995–1997). Marine Pollution Bulletin, 38, 1115–1125.CrossRefGoogle Scholar
  32. Mander, L., Marie-Orleach, L., & Elliott, M. (2013). The value of wader foraging behaviour study to assess the success of restored intertidal areas. Estuarine, Coastal and Shelf Science, 131, 1–5.CrossRefGoogle Scholar
  33. Maris, T., Cox, T., Temmerman, S., De Vleeschauwer, P., Van Damme, S., De Mulder, T., Van den Bergh, E., & Meire, P. (2007). Tuning the tide: Creating ecological conditions for tidal marsh development in a controlled inundation area. Hydrobiologia, 588, 31–43.CrossRefGoogle Scholar
  34. Mazik, K., Musk, W., Dawes, O., Solyanko, K., Brown, S., Mander, L., & Elliott, M. (2010). Managed realignment as compensation for the loss of intertidal mudflat: A short term solution to a long term problem? Estuarine, Coastal and Shelf Science, 90(1), 11–20.CrossRefGoogle Scholar
  35. Meire, P., Ysebaert, T., Van Damme, S., Van den Bergh, E., Maris, T., & Struyf, E. (2005). The Scheldt estuary: A description of a changing ecosystem. Hydrobiologia, 540, 1–11.CrossRefGoogle Scholar
  36. Mossman, H. L., Davy, A. J., & Grant, A. (2012). Does managed coastal realignment create saltmarshes with ‘equivalent biological characteristics’ to natural reference sites? Journal of Applied Ecology, 49, 1446–1456.CrossRefGoogle Scholar
  37. Mycoo, M. (2014). Sustainable tourism, climate change and sea level rise adaptation policies in Barbados. Natural Resources Forum, 36, 47–57.Google Scholar
  38. NOAA (Restoration Center and Coastal Services Center). (2010). Returning the tide—A tidal hydrology restoration guidance manual for the Southeastern U.S. NOAA. MD: Silver Spring. Accessed 20 Feb 2014.
  39. Nottage, A., & Robertson, P. (2005). The saltmarsh creation handbook: A project manager’s guide to the creation of saltmarsh and intertidal mudflat. London: The Royal Society for the Protection of Birds and CIWEM.Google Scholar
  40. O’Neill, S., & Nicholson-Cole, S. (2009). “Fear Won’t Do It”: Promoting positive engagement with climate change through visual and iconic representations. Science Communication, 30, 355–379.CrossRefGoogle Scholar
  41. Pethick, J. (2002). Estuarine and tidal wetland restoration in the United Kingdom: Policy versus practice. Restoration Ecology, 10(3), 431–437.CrossRefGoogle Scholar
  42. Pidgeon, N. F., Simmons, P., Sarre, S., Henwood, K. L., & Smith, N. (2008). The ethics of socio-cultural risk research. Health, Risk & Society, 10(4), 321–329.CrossRefGoogle Scholar
  43. Portman, M. E., Esteves, L. S., Le, X. Q., & Khan, A. Z. (2012). Improving integration for integrated coastal zone management: An eight country study. Science of the Total Environment, 439, 194–201.CrossRefGoogle Scholar
  44. Ramsay, D. L., Gibberd, B., Dahm, J., & Bell, R. G. (2012). Defining coastal hazard zones and setback lines. A guide to good practice. Hamilton: National Institute of Water & Atmospheric Research Ltd.Google Scholar
  45. Reisinger, A., Lawrence, J., Hart, G., & Chapman, R. (2014). From coping to resilience: The role of managed retreat in highly developed coastal regions of New Zealand. In B. Glavovic, R. Kaye, M. Kelly, & A. Travers (Eds.), Climate change and the coast: Building resilient communities. London: CRC Press.Google Scholar
  46. Roca, E., Gamboa, G., & Tàbara, J. D. (2008). Assessing the multidimensionality of coastal erosion risks: Public participation and multicriteria analysis in a Mediterranean Coastal System. Risk Analysis, 28(2), 399–412.CrossRefGoogle Scholar
  47. Rupp-Armstrong, S., & Nicholls, R.J. (2007). Coastal and estuarine retreat: A comparison of the application of managed realignment in England and Germany. Journal of Coastal Research, 23(6), 1418–1430.CrossRefGoogle Scholar
  48. Sanò, M., Jimenez, J. A., Medina, R., Stanica, A., Sanchez-Arcilla, A., & Trumbic, I. (2011). The role of coastal setbacks in the context of coastal erosion and climate change. Ocean & Coastal Management, 54, 943–950.CrossRefGoogle Scholar
  49. Siders, A. (2013). Managed coastal retreat: A legal handbook on shifting development away from vulnerably areas. Centre for Climate Change Law, Columbia Public Law Research Paper No. 14–365, p. 140.Google Scholar
  50. Townend, I., Scott, C., & Dixon, M. (2010). Managed realignment: A coastal flood management strategy. In G. Pender & H. Faulkner (Eds.), Flood science risk and management (pp. 60–86). Oxford: Wiley.Google Scholar
  51. Turbott, C., & Stuart, A. (2007). Managed retreat from coastal hazards: Options for implementation. Environment Waikato technical report 2006/48, p. 89.–48.pdf. Accessed 20 Jan 2014.
  52. Vandenbruwaene, W., Maris, T., Cox, T. J. S., Cahoon, D. R., Meire, P., & Temmerman, S. (2011). Sedimentation and response to sea-level rise of a restored marsh with reduced tidal exchange: Comparison with a natural tidal marsh. Geomorphology, 130, 115–126.CrossRefGoogle Scholar
  53. van Proosdij, D., Lundholm, J., Neatt, N., Bowron, T., & Graham J. (2010). Ecological re-engineering of a freshwater impoundment for salt marsh restoration in a hypertidal system. Ecological Engineering, 36(10), 1314–1332.CrossRefGoogle Scholar
  54. Warren, R. S., Fell, P. E., Rozsa, R., Brawley, A. H., Orsted, A. C., Olson, E. T., Swamy, V., & Niering, A. (2002). Salt marsh restoration in Connecticut: 20 years of science and management. Restoration Ecology, 10(3), 497–513.CrossRefGoogle Scholar
  55. Wolters, M., Garbutt, A., & Bakker, J. P. (2005). Salt-marsh restoration: Evaluating the success of de-embankments in north-west Europe. Biological Conservation, 123(2), 249–268.CrossRefGoogle Scholar
  56. Wolters, M., Garbutt, A., Bekker, R. M., Bakker, J. P., & Carey, P. D. (2008). Restoration of salt-marsh vegetation in relation to site suitability, species pool and dispersal traits. Journal of Applied Ecology, 45(3), 904–912.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.Faculty of Science and TechnologyBournemouth UniversityPooleUK

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