The WWRP project area encompasses an essential linkage of the Westside Wildlife Corridor in SW Portland, a section of the west hills that includes undeveloped natural habitats and streams. We are working to enhance the functionality of this wildlife migration corridor, forming a connection between Tryon Creek State Natural Area in the South and Forest Park in the North. Ultimately, we hope to help maintain a healthy wildlife corridor connecting SW Portland's natural areas all the way to Oregon's Coast Range.
Image from an ArcGIS Story Map by Andrew Addessi, Portland State University: http://arcg.is/2fHFcL0
Five Years in The Corridor
Learn more about the WWRP Corridor and the efforts that have taken place in the past five years in the
WWRP Summary Report: 2015-2020. A Review and Synthesis to Partnership Next Steps.
This five year summary report serves as the basis to evaluate existing information, to guide the group’s next steps and provide an overview for those interested in the WWRP’s efforts. This report is outlined with the current strategic plan goals in mind as these goals: restoration, partner engagement and communications and outreach, are the cornerstone of WWRP work. Furthermore, this report presents background information that has contributed to the current operations of the partnership as well as details the structure of the WWRP and how partners have leveraged support to complete projects across agencies. The cross project synthesis presents a side by side comparison of project spendings and outcomes. This analysis has allowed WWRP members to prioritize objectives and next steps moving forward.
Learn more about The Corridor and why it's important:
The Corridor & People
The Westside Wildlife Corridor that connects Forest Park to Tryon Creek State Natural Area is enjoyed by nearby residents, students, and other users of Terwilliger Parkway and Marquam Nature Park. Access to this corridor and other urban green spaces is important for many reasons, including human health & well-being, safety, and educational and economic benefits.
Human Health & Well-Being
Nearly 40 years of research shows that the experience of nature is important to human functioning, health, and well-being. Access to urban green spaces has the potential to:
Increase physical activity
Lower stress levels
Create positive social interactions
Improve mental health and wellness
Foster a sense of unity among residents
The presence of weedy plants:
Can take down trees & power lines
Provide little protection against erosion on slopes.
Opportunities for research
Access to outdoor hands-on learning
Improved academic performance
Increase property value
Reduce energy costs
To learn more about the benefits of urban green spaces and the research that is being conducted, please visit Green Cities: Good Health
The Corridor & The Environment
Wildlife corridors are linked areas of land or habitat that connect larger green spaces together, creating passageways for wildlife to travel from one location to another. The ability for native wildlife to freely move through these corridors is an essential part of finding food, shelter, and a mate.
As urbanization continues to encroach on our natural areas, corridors are becoming increasingly important to local wildlife. The Westside Wildlife Corridor connects wildlife habitat and clean water resources between Forest Park and Tryon Creek State Natural Area and is an important area for many native species and special status habitats.
The West Willamette Restoration Partnership (WWRP) supports habitat enhancement and stewardship efforts in southwest Portland’s Willamette River subwatersheds. This includes, but is not limited to, Marquam Nature Park, Terwilliger Parkway, Keller Woods, George Himes City Park, Riverview Natural Area, and other green spaces in between. The ecological health of these areas has been degraded by the spread of non-native plant species like Irish and English ivy, English holly, and Himalayan blackberry. We aim to improve conditions supportive of native flora and fauna through good land stewardship, volunteerism, and education.
Special Status Habitats
The corridor includes a 25 acre area of oak habitat – a rare remaining grove of the native Oregon white oak trees that used to dominate the Willamette Valley.
Upland mixed conifer forests, another special status habitat found within the corridor, provides a multi-layered tree canopy and a high volume of dead wood.
Conservation Strategy Species
Strategy Species are those that have small or declining populations, are at-risk, and/or are of management concern. Some of the Conservation Strategy Species that use the Southwest Wildlife Corridor include:
Northern flying squirrel
Healthy wildlife corridors promote local biodiversity, which
Supports native pollinators
Supports nutrient cycling and soil fertility
Increases ecological stability and resilience following a disturbance
Paved surfaces and rooftops found in urban areas create a wide range of environmental issues. Urban green spaces provide shaded, moist areas and permeable surfaces and can protect cities from the following negative environmental impacts:
Urban Heat Island Effect
Air pollution & greenhouse gases
Impaired water quality
To learn more about the projects that WWRP and the partners are working on to conserve and restore the Westside Wildlife Corridor, check out our projects page: