Wolves change rivers

This link offers an interesting 5min film explaining how the reintroduction of wolves into Yellowstone National Park after 70 years of absence has altered the very geography through a "trophic cascade". The basic idea is that a small change at the top of the food chain "cascades" down the chain, reshaping the ecosystem along the way. This interests me in at least two ways. First, it highlights concepts from resilience theory about how ecosystems are in perpetual construction and change. Second, having just read Deleuze and Guattari's A Thousand Plateaus chapter "1914: One or Several Wolves", which introduces the concept of multiplicities, this video suggests membership in a pack of "wolves" can have a cascade effect throughout social organization. That is, small coordinated groups of individuals can reconfigure social relations.