(We hear from Tilden School’s fifth-graders from time to time. Tonight – they explain their recent forest-restoration project.)

By Tilden School’s Fifth Graders
Special to West Seattle Blog

On October 8th, our fifth-grade class joined Nature Consortium’s Restoration Project Director Mark Tomkiewicz (aka Buphalo) and Restoration Project Coordinator Lizzie Petrin in the West Duwamish Greenbelt here in West Seattle. Nature Consortium is a nonprofit organization “whose mission is to connect people, arts, and nature,” and Buphalo and Lizzie spent a whole day teaching us how to be stewards of the environment through hands-on habitat restoration activities. Even though the word “green” is in “Greenbelt,” and it is green, this West Seattle forest is unhealthy and needs our help.

The West Duwamish Greenbelt is covered with both invasive and native species. Common invasive species include Himalayan blackberry, evergreen blackberry, and English ivy. Our class picked up trash and ripped out invasive species, so we could plant native species, specifically western red cedars. When native species grow near invasive species, they can be killed, but we can save native species by removing invasive plants and planting native ones.

The western red cedars we planted are young coniferous trees. Mature coniferous trees are not currently in the West Duwamish Greenbelt, but if they were, we would gain many benefits. One of them is carbon reduction. You might ask why, and the answer would be under the bark. Coniferous trees do a great job of capturing the carbon dioxide we produce. The Pacific Northwest actually holds the top ten carbon-storing forests in the U.S., according to the Wilderness Society. If you cut down the trees that hold the carbon, it is released into the atmosphere to contribute to global warming as greenhouse gas.

Even though the West Duwamish Greenbelt has few evergreen trees, the forest is still green. It’s a common misconception that since it’s bright and green, it’s healthy. That’s not the case. Invasive species can be green, and they kill off the more important coniferous trees! Also, most of the green, mature trees in the Greenbelt are short-living and deciduous, thus not storing much carbon and allowing invasive species to take over. Coniferous trees are long-living (some over 1,000 years), store much more carbon, and stay green and oxygen-producing all year round. So, here’s the proper conception of a thriving forest: if it’s a green forest in winter, chances are it’s a healthy forest!

The West Duwamish Greenbelt is a large watershed whose naturally-filtered water should drain right into the Duwamish River, one of the most polluted rivers in the U.S. However, because West Marginal Way and industrialized land stand between the Greenbelt and the Duwamish River, the healthy water from the Greenbelt cannot flow directly into the toxic river. If it could, it would help clean up the river, creating a healthier, salmon-filled waterway.

Even though we may have only made a small dent in the giant wall of ecosystem-destroying forces, our effort to stop the reign of pollution and invasive species will lead to a better world. We have begun to improve our future and that of generations to come. With year-round opportunities to volunteer with Nature Consortium, we all can save the West Duwamish Greenbelt by fighting for native species and against invasive species.