In that philosophical poem, Lucretius asks straightforwardly: What is this place? What is it made of? How does it work? His answers are as helpful now as they were in 50 BCE, in the sense that his curiosity, detailed observations, and empirical imagination still reverberate. He was an early proponent of a DIY ethic: he trusted his own experience to make sense of things.
At the Headwaters: An Interview with Lindsey French, A. Laurie Palmer, Sarah Ross, and Gulsah Mursaloglu
The river is a collaborator in the same way that a freeway is. The river is a highway for goods, raw materials, and only sometimes used for recreation. In this way, it is an ecosystem in the most broad sense. It is part of my ecosystem because it facilitates all manner of materials that I use.