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Investigation of Restoration and Protection Options for Juvenile Salmonids in the Courtenay Estuary . October 2011 By Lora Tryon, R.P. Bio For The Comox Valley Project Watershed Society. Outline for Today. Study Area Objectives Methods Results Summary Future Actions.
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Investigation of Restoration and Protection Options forJuvenile Salmonids in the Courtenay Estuary October 2011 By Lora Tryon, R.P. Bio For The Comox Valley Project Watershed Society
Outline for Today • Study Area • Objectives • Methods • Results Summary • Future Actions
Objectives Apply ecosystem management principles to: • Characterize estuarine health • Develop a comprehensive list of estuary restoration and protection options
METHODS • Field Sampling in the spring and summer of 2010 • Historical data/information review • Stakeholder discussions • Development of restoration and protection options
Habitat Requirements • Capacity • Diet • Water Quality • Opportunity • CPUE • Size Class Analysis • Proximity to migration routes • Realized Function • Growth • Residence Time • Density Simenstad, C. A., & Cordell, J. R. (2000). Ecological assessment criteria for restoring anadromous salmonid habitat in Pacific northwest estuaries. Ecological Engineering, 15, 283-302.
General Summary of Findings • Preferred diet: copepods & insects (CN), insects (CO) • Gammarid amphipods also important • Higher temperatures earlier lower in the estuary • Greatest CPUE’s & densities late May/early June • 2 different size classes of both CN and CO • Important areas for foraging, refuge & growth • Residency: 125-177 days (CO fry) 20-82 days (CN fry) • Upstream migration into lower river habitats?
Restoration Project Example:Simms Park Fish Habitat Restoration Map Label, Project Type, Location, Description, Rationale, Opportunities, Constraints, Preliminary Work Required, Key People, Resources
Communication of Results • Google Earth Places • Habitat Maps • Presentations • Report: www.members.shaw.ca/lake_trail • (click on “Downloads”)
Recommendations for Future Action • Apply to estuarine management • Prioritization of Options • Annual review of Options • Continued update of information • Communications and outreach
Acknowledgments Comox Valley Project Watershed Society Estuary Working Group BC Hydro Fish and Wildlife Compensation Program Tsolum River Restoration Society Millard/Piercy Watershed Stewards Brooklyn Creek Stewards Courtenay Fish and Game Protective Association British Columbia Conservation Foundation Excel Community College volunteers Youth and Ecological Restoration Comox Valley Naturalists Society Private landowners Fisheries and Oceans Canada Ministry of Agriculture and Lands Interviewees: Cynthia Durance, Ron Watanabe (FGPA), and Nancy Hofer (City of Courtenay) Contractors: Joanne Ellefson, Mike White, Corey Frank, Shane Johnson (BCCF), Candice Salmon, PW Mapping Centre, Michele Jones, Bev Bravender, Kayt Chambers