The staged sequence by which unmaintained ecosystem engineering structures fail — maintenance cessation, seepage, breach, draining, reversion — each stage accelerating the next, and each operating with exact fidelity in organizational cognitive infrastructure when institutional pressure displaces stewardship.
Butler and Malanson's studies of beaver dam failure in the Rocky Mountains documented a predictable five-stage degradation sequence: maintenance cessation (the beaver stops inspecting and repairing), seepage (water finds gaps that maintenance would have closed), breach (a storm or high water opens a channel that erodes rapidly), draining (the pond empties faster than it filled), and reversion (the stream returns to something approximating its pre-engineering condition). The sequence is not catastrophic in the colloquial sense; there is no single moment of failure. The degradation proceeds through compromises individually small enough to be insignificant, whose cumulative effect is habitat loss. The organizational cognitive infrastructure translation is exact.
The Abandonment Cascade
In The You On AI Field Guide
The first stage is maintenance cessation. The casual observer sees a functioning structure; the hydrologist sees a maintenance deficit accumulating. In organizational terms, protected reflection time continues but mentoring meetings are allowed to reschedule; cross-domain sessions are still on the calendar but