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Project River Recovery: Restoration of Braided Gravel-Bed River Habitat in New Zealand’s High Country

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Abstract

Ecological restoration is increasingly becoming a primary component of broader environmental and water resources management programs throughout the world. The New Zealand Department of Conservation implemented Project River Recovery (PRR) in 1991 to restore unique braided gravel-bed river and wetland habitat in the Upper Waitaki Basin in New Zealand’s high country of the South Island, which has been severely impacted by hydroelectric power development. These braided rivers are highly dynamic, diverse, and globally important ecosystems and provide critical habitat to numerous native wading and shore bird species, including several threatened species such as the black stilt. The objective of this study was to review and summarize PRR after more than 10 years of implementation to provide information and transfer knowledge to other nations and restoration programs. Site visits were conducted, discussions were held with key project staff, and project reports and related literature were reviewed. Primary components of the program include pest plant and animal control, wetland construction and enhancement, a significant research and monitoring component, and public awareness. The study found that PRR is an excellent example of an ecological restoration program focusing on conserving and restoring unique habitat for threatened native bird species, but that also includes several secondary objectives. Transfer of knowledge from PRR could benefit ecological restoration programs in other parts of the world, particularly riverine floodplain and braided river restoration. PRR could achieve even greater success with expanded goals, additional resources, and increased integration of science with management, especially broader consideration of hydrologic and geomorphologic effects and restoration opportunities.

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Acknowledgments

I would like to sincerely thank Dr. Mark Sanders, the PRR project manager at the time of this study, for invaluable assistance, providing information and insight into the program, and hosting site visits. I would also like to thank Chris Woolmere, the current project manager, and Norm Thornley of DOC for providing information and maps of the basin.

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  1. Office of Research and Development US Environmental Protection Agency, Denver, Colorado, 80202, USA

    Brian S. Caruso

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Caruso, B.S. Project River Recovery: Restoration of Braided Gravel-Bed River Habitat in New Zealand’s High Country. Environmental Management 37, 840–861 (2006). https://doi.org/10.1007/s00267-005-3103-9

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