Eelgrass (Zostera marina L.) Restoration in the Pacific Northwest: Recommendations to Improve Project Success

The authors summarize eelgrass (Zostera marina L.) restoration and mitigation project results and recommendations of transplant practitioners in the Pacific Northwest since 1990. Their purpose is to provide current information for the programs considering eelgrass restoration by providing a synthesis of what practitioners and researchers have learned through experimentation and monitoring of discrete projects throughout western Washington and British Columbia. Reports, papers, personal communications, and a workshop were used to gather data on these projects. Their general null hypothesis is that eelgrass can be restored to match natural eelgrass meadows in terms of structure and function. They conclude that, under favorable site conditions, and if the reason for the initial loss of eelgrass is understood and corrected, eelgrass can be restored. However, eelgrass restoration science is hampered by knowledge gaps, reducing restoration success. For example, mechanisms for recent eelgrass loss in the region are not obvious, which suggests that the scientific understanding of eelgrass biology and ecosystem conditions is inadequate to support environmental management actions in the region. To improve restoration project success in the Pacific Northwest requires further research to remove knowledge gaps, closely evaluating the performance of restoration projects, and disseminating information for use by future generations. Workshop participants identified an immediate need to construct a clearinghouse of eelgrass restoration and monitoring results that provides summaries and data from eelgrass enhancement efforts. Furthermore, the authors found that it was difficult to summarize the relative performance of the more than 30 projects reviewed because of variations in goals, project size, planting methods employed, performance criteria, duration of monitoring, intensity of monitoring, and data interpretation. Hence, the authors recommend that standard monitoring protocols be developed and results from these methods be reported through the clearinghouse and periodic meetings.

• Record URL:
  http://www.wsdot.wa.gov/research/reports/fullreports/706.1.pdf
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/58907
• Corporate Authors:

  Washington State Department of Transportation

  310 Maple Park Avenue, SE, P.O. Box 47300
  Olympia, WA  United States  98504

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Thom, Ronald
  • Gaeckle, Jeff
  • Borde, Amy
  • Anderson, Michael
  • Boyle, Matthew
  • Durance, Cynthia
  • Kyte, Michael
  • Schlenger, Paul
  • Stutes, Jason
  • Weitkamp, Don
  • Wyllie-Echeverria, Sandy
  • Rumrill, Steve
• Publication Date: 2008-8

Language

• English

Media Info

• Media Type: Print
• Edition: Research Report
• Features: Appendices; Figures; Maps; Photos; References; Tables;
• Pagination: 34p

Subject/Index Terms

• TRT Terms: Information dissemination; Information management; Monitoring; Recommendations; Restoration ecology; Standards
• Uncontrolled Terms: Eelgrass
• Geographic Terms: Pacific Northwest
• Subject Areas: Data and Information Technology; Design; Energy; Environment; Highways; Research; I15: Environment;

Filing Info

• Accession Number: 01109886
• Record Type: Publication
• Report/Paper Numbers: WA-RD 706.1
• Files: NTL, TRIS, USDOT, STATEDOT
• Created Date: Aug 27 2008 4:18PM