Ecological outcomes and evaluation of success in passively restored southeastern depressional wetlands.

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Abstract: Depressional wetlands may be restored passively by disrupting prior drainage to recover original hydrology and relying on natural revegetation. Restored hydrology selects for wetland vegetation; however, depression geomorphology constrains the achievable hydroperiod, and plant communities are influenced by hydroperiod and available species pools. Such constraints can complicate assessments of restoration success. Sixteen drained depressions in South Carolina, USA, were restored experimentally by forest clearing and ditch plugging for potential crediting to a mitigation bank. Depressions were assigned to alternate revegetation methods representing desired targets of herbaceous and wet-forest communities. After five years, restoration progress and revegetation methods were evaluated. ... continued below

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1129-1140

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De Steven, Diane; Sharitz, Rebecca R. & Barton, Christopher, D. November 1, 2010.

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  • Savannah River Forest Station
    Publisher Info: USDA Forest Service, Savannah River, New Ellenton, SC
    Place of Publication: New Ellenton, South Carolina

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Abstract: Depressional wetlands may be restored passively by disrupting prior drainage to recover original hydrology and relying on natural revegetation. Restored hydrology selects for wetland vegetation; however, depression geomorphology constrains the achievable hydroperiod, and plant communities are influenced by hydroperiod and available species pools. Such constraints can complicate assessments of restoration success. Sixteen drained depressions in South Carolina, USA, were restored experimentally by forest clearing and ditch plugging for potential crediting to a mitigation bank. Depressions were assigned to alternate revegetation methods representing desired targets of herbaceous and wet-forest communities. After five years, restoration progress and revegetation methods were evaluated. Restored hydroperiods differed among wetlands, but all sites developed diverse vegetation of native wetland species. Vegetation traits were influenced by hydroperiod and the effects of early drought, rather than by revegetation method. For mitigation banking, individual wetlands were assessed for improvement from pre-restoration condition and similarity to assigned reference type. Most wetlands met goals to increase hydroperiod, herb-species dominance, and wetland-plant composition. Fewer wetlands achieved equivalence to reference types because some vegetation targets were incompatible with depression hydroperiods and improbable without intensive management. The results illustrated a paradox in judging success when vegetation goals may be unsuited to system constraints.

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1129-1140

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  • Journal Name: Wetlands; Journal Volume: 30; Journal Issue: 1

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  • Report No.: na
  • Grant Number: AI09-00SR22188
  • DOI: 10.1007/s13157-010-0100-4 | External Link
  • Office of Scientific & Technical Information Report Number: 1000918
  • Archival Resource Key: ark:/67531/metadc833928

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  • November 1, 2010

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  • May 19, 2016, 3:16 p.m.

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  • Nov. 1, 2016, 6:01 p.m.

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De Steven, Diane; Sharitz, Rebecca R. & Barton, Christopher, D. Ecological outcomes and evaluation of success in passively restored southeastern depressional wetlands., article, November 1, 2010; New Ellenton, South Carolina. (digital.library.unt.edu/ark:/67531/metadc833928/: accessed July 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.