Webinars

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Next webinar: Thursday, June 20, 2019 at 10 a.m – 11 a.m.
Beaver Dam Analogs and Post-Assisted Log Structures: Cost-Effective, Scalable Methods for Region-Wide Stream Restoration

The systematic and widespread removal of large woody debris (LWD) and beaver has resulted in simplified and degraded riverscapes. Historically, large woody debris and beaver dams were ubiquitous throughout North American riverscapes. Beaver dams and large woody debris have been shown to influence hydrologic and geomorphic processes in similar ways, creating fish habitat and spawning areas and promoting sediment and nutrient retention The introduction of habitat structures has been practiced for at least a century, with restoration focused on the creation of discrete habitat features, often pools for fish, rather than emphasizing how structures could enable and promote processes.

However, to address the scope of degraded streams region-wide, cost-effective and scalable restoration methods are critical. The approach to restoration, the design of low-tech process-based restoration projects, described here is informed by the vision of physically complex valley bottoms and multi-thread channels described as ‘Stage 0’. We describe the design process for two types of low-tech structures, post-assisted log structures (PALS) and beaver dam analogues (BDAs). PALS are woody material of various sizes pinned together with untreated wooden posts driven into the substrate to simulate natural wood accumulations. BDAs are channel-spanning, permeable structures, with a uniform crest elevation, constructed using woody debris and fill material, to form a pond and mimic natural beaver dams. Both structure types are designed as complexes, or a group of low-tech restoration structures designed to achieve specific objectives. A complex may be composed of a single type of structure, or a mix of structure types, and consist of 2 – 15 structures.

Presenter:

Dr. Chris Jordan, Research Fisheries Biologist with NOAA/NMFS’s Northwest Fisheries Science Center and Program Manager for the Mathematical Biology and Systems Monitoring Program

Trained as a mathematical biologist, Dr. Jordan has worked on a wide range of biological topics, all with an emphasis on the development or application of quantitative methods.  Recent work has focused on the design and implementation of large-scale monitoring programs to assess anadromous salmonid freshwater habitat and population status as well as the watershed-scale effect of management actions on salmonid habitat and population processes.

 

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Webinars occur on the Third Thursday of each month.  To get on the mailing list to receive  announcements of future webinars, email anna.freitas@oacd.org

Webinar Archive

2019 Webinars

May 16, 2019- Government Relations for Conservation Organizations: Furthering conservation through partners, allies, advocacy

March 21, 2019- Riparian Restoration Monitoring for Salmonids in a Multiple Use Context

February 21, 2019- Aquatic Noxious Weeds:  Ecosystem Game Changers

January 17, 2019- Low-Impact Development:  The Role of SWCDs, Watershed Councils, and Land Trusts in Urban Development

2018 Webinars

December 20, 2018- Seeing Our Conservation Work Through the Lens of Climate Change

December 6, 2018- Oregon Dept. of Forestry Streamside Protections Reviews: Western Oregon and Siskiyou

November 15, 2018- 2018 Tidegate Update and Discussion

November 9, 2018- Insights from Willamette Watershed Council Capacity Study

November 1, 2018- Lending to Landowners using the State Revolving Fund

September 20, 2018- Using Open Source Technology to Simplify Watershed Transparency and Collaboration

August 23, 2018- OWEB’s On-line Monitoring Application Tutorial

July 19, 2018- Developing Your Core Message (and other great communications tips) with Oregon Lottery

June 21, 2018- Thinking Like an OWEB Review Team – a conversation with Regional Program Reps

May 17, 2018- The 2017 Nationwide 401 Water Quality Certification Program

March 15, 2018- Using the News Media for Conservation Outreach:  Hows and Whys of Telling Your Story to Journalists

February 15, 2018 – Lessons In Collaboration (creating a shared space center for environmental organizations)

January 18, 2018 – Americorps as a Resource for Oregon Watershed Councils, Land Trusts, and SWCDs

November 16, 2017 – Cultural Resource Protection

2016-2017 Webinars

October 12, 2017 – Databases for River and Watershed Groups

August 24, 2017 – Exploring Partnerships with Human Health Sector

August 10, 2017 – Accomplishing Watershed and Outdoor Education in 2017 and Beyond

June 29, 2017 – Outdoor Education Momentum in Oregon

June 22, 2017 – Watershed Restoration Prioritization Using Finescale Modeling and Field Verification

November 17, 2016 – Insurance and Risk Management: Protecting Your Council

September 28, 2016 – Using Logic Models