CAT 2020 Slot 3 VARC: Rewilding and Its Discontents

Rewilding began as a modest proposal — reintroduce a missing predator here, let a floodplain flood there — and has since acquired the momentum of a movement with its own vocabulary, funding streams and passionate detractors. Its founding insight was ecological: many landscapes that look intact are in fact running on a diminished set of processes, having lost not just individual species but the interactions those species sustained. The much-cited case is Yellowstone, where wolves, absent for decades, were reintroduced in the 1990s and where, according to a since-popularized narrative, their return curbed overgrazing elk, allowed riverside vegetation to recover, stabilized eroding banks and even altered the course of rivers — a "trophic cascade" running from apex predator down to hydrology. The image of a single reintroduced species reorganizing an entire ecosystem proved irresistible, and rewilding projects proliferated well beyond Yellowstone on the strength of it.

It is worth being precise about what has held up under scrutiny and what has not. The core claim — that removing or restoring a keystone species can propagate effects through a food web in ways static conservation, focused on preserving current conditions, will not anticipate — remains well supported and is not seriously contested among ecologists. What later research has complicated is the specific, tidy Yellowstone story: the vegetation recovery attributed to wolves turns out to be entangled with climate shifts, changing elk migration independent of predation, and human hunting pressure, such that isolating the wolf's contribution from these confounds is far harder than the popular narrative suggests. The broader mechanism survives; the flagship illustration of it does not survive intact.

This matters for rewilding as policy, not just as science, because the movement's public appeal has leaned heavily on precisely the kind of clean, cascading narrative that the Yellowstone case complicates. A landowner or a funding body asked to support a reintroduction wants to know roughly what will happen and on what timeline, and "it depends on interactions we cannot fully predict in advance" is a harder sell than "the wolves will fix the river." The temptation, understandable but corrosive, is to keep promising the clean story because it raises money, even once the science has moved to a more qualified position.

A second and less publicized tension concerns whose landscape is being rewilded and on whose authority. Rewilding proposals frequently target land that is not empty in any meaningful sense — it is grazed, farmed, hunted or otherwise used by people whose livelihoods and preferences are treated, in some proposals, as an obstacle to be managed rather than a stakeholder to be negotiated with. Where rewilding has worked durably, it has tended to involve local communities as participants with a stake in the outcome rather than as a population to be relocated or restricted; where it has been imposed from outside, resistance and reversal have followed with some regularity.

None of this is an argument against rewilding, which remains one of the more promising tools available for addressing ecological simplification at landscape scale. It is an argument against the version of rewilding that survives mainly on a story too clean for the ecology it describes, and against treating the people who live on the land in question as a problem the project must route around rather than a condition of its success.