Years ago, I started reading books on Taoism. One Taoist concept I learned early on was the inevitability of change. Nothing stays the same, Taoists tell us. Things move, shift, grow, and fade, whether we’re paying attention or not.
Years later, I became interested in ecology, and I began to wonder: how do forests change? Specifically, I began to wonder how forests in the northeastern United States have changed over the past 400 years.
Turns out, I wasn’t the only one wondering about this. Ecologists have been trying to figure this out for a long time. What they’ve found is somewhat surprising and even a bit paradoxical:
After 400 years of intense land use, the northeastern forest is both largely unchanged and completely transformed.
I’m excited to announce that I’ll be leading a series of forest ecology outings, and I’d love for you to join me!
On August 30 and 31, 2025, I will be leading two Summer Forest Ecology Outings at McConnells Mill State Park in Pennsylvania.
Designated a National Natural Landmark for its outstanding features, McConnells Mill is a treasure trove for learning. Central to the park’s landscape is the Slippery Rock Gorge — a deep ravine carved by powerful forces, exposing millions of years of ancient bedrock and currently supporting mature forest ecosystems.
Located in northwestern Pennsylvania, Cook Forest is home to one of the last remaining old-growth forests in the entire region, with 11 old-growth areas spanning over 2,300 acres. One of the areas within the park, the Forest Cathedral, contains arguably the finest concentration of old-growth trees in the northeastern United States.
During these outings, we will walk through deciduous and coniferous woodlands while discussing forest ecology. We’ll investigate big trees and big rocks. We’ll see historic landmarks, and we’ll discuss important geological influences that have drastically shaped the landscape.
In addition to learning key characteristics of mature and old-growth forests, participants will learn tree identification, mushroom ecology and identification, the role of fire as an ecological agent, ways to interpret forest history, and much more.
These outings are great opportunities to learn, explore, and connect with nature in spectacular settings. They’re also great opportunities to meet wonderful people.
Please note: Each outing is a single-day event. To maximize your learning experience, space is limited and registration with payment in advance is required to secure your spot.
Paths I Walk 