Water World

In the mornings I run along the forested part of Terwilliger in southwest Portland. About twice a year, people wearing haz-mat suits spray herbicide in the park to kill invasive plants. Within a day or two of the spraying session the sidewalk is littered with the corpses of small animals such as moles and mice.

I have noticed this phenomenon over the last few years but it wasn’t until a recent run that it occurred to me that, in the same area where the sprayers were required to wear protective gear, including face masks, I was clad only in shorts and a t-shirt.

If the chemicals being used are harmful enough to warrant protective clothing and kill rodents, what does this mean for the health of our water supply?

We in the Pacific Northwest enjoy unusually temperate and mild weather, and in a typical year we experience months of rain. As that rain falls on land it seeps into groundwater carrying whatever particulates it comes in contact with along with it.

The likelihood of herbicidal residue being carried to our water supply through the watershed is high.

As I contemplated the mortality rate of rodents I also felt a rush of gratitude for organizations like the Friends of Tryon Creek, who I work for, that strive to do something to combat the problem of water quality degradation.

Piles of ivy pulled by Friends' volunteers

The Friends’ environmental education and stewardship programs are intended to connect people to the natural world by engaging them with hands-on opportunities to explore our relationship to the planet. Surely “We are all connected”, seeing as how we are just as much a part of nature as the tree that blossoms in the spring, the bird that flies south for the winter, and the mole that seeks cover along Terwilliger Boulevard. To truly appreciate that fact means understanding that our actions impact the world around us in an immediate sense, and those same actions can affect us down the road.

I circle back to the issue of water quality. Spraying herbicide impedes weed encroachment – while adding toxic chemicals to our ground water. That reality inspires the Friends to explore ways to keep our watershed healthy, such as inviting volunteers to pull ivy in the park every Saturday (elbow grease is a great alternative to chemicals!) and bringing the Backyard Habitat Certification Program to Lake Oswego. The BHCP gives property owners the tools to provide habitat for wildlife, reduce water usage and the need for chemical applications, and use native plants to reduce the amount of pollution in runoff to waterways and streams.

Tryon Creek in early Summer

With guidance from organizations like the Friends, significant action to improve the health and quality of our environment is within reach. Visit www.tryonfriends.org to learn more.

The Friends of Tryon Creek's Owl Citizen Science Project

 

From November 2011 through February 2012 Matthew Collins, the Friends’ Education Director, led nineteen participants on seven outings at Tryon Creek. Their mission? To locate and study the owls that call Tryon Creek home.

Collins conceived of the Owl Citizen Science Project as a way to provide people with a chance to learn about scientific monitoring techniques, interact with the park at night, impart intimate knowledge of resident and visiting owls, and inspire a stronger sense of connection to the natural world in general and Tryon Creek in particular.

A typical outing would begin around 6 p.m., when the park started to get dark. Project participants would divide into small groups that would hike to stations along the trails until 8 p.m. As groups reached their different stations they would begin by waiting in silence and then they would proceed to make owl calls starting with the most diminutive, the reason being that if you call the large owls first the smaller ones are very unlikely to respond out of fear. When a team heard an owl call back, the group was careful not to prolong engagement to prevent the owl from being disturbed.

Observing owls and being in the park at night was extremely positive for project participants:

“It was a great experience to learn more about owls. I didn’t realize that there were so many in such a small area! It was exciting to be in the park at night with my group of three or four people, and waiting in the silence was amazing.” – Diane Quivey

“I learned something about owls in general and particularly those in my neighborhood. We live about a half mile from the park and ever since moving here in the late ‘90’s, I've heard owls in the middle of the night. I heard one again a couple nights ago about 2 a.m. It turns out they're screech and barred owls. And, lo and behold, I can tell them apart now!” – Jeff Wiseman

“Although I have hiked in the park countless times I have never done it at night. I wanted to see what it was like…in the safety of a group who knows what they’re doing. For amateurs like me, this was a whole new experience.” – Stephen Goodrich

The Owl Citizen Science Project will return to Tryon Creek this fall with a kick-off event planned for October. Those interested in participating can visit www.tryonfriends.org for more information.