World Rewilding Day

Facts About World Rewilding Day

Ecological Rewilding Started as a Concept in the 1980s

The modern idea of “rewilding” emerged in North American conservation science in the late 1980s and 1990s, when ecologists such as Michael Soulé and Reed Noss proposed protecting large core areas, reconnecting them with wildlife corridors, and restoring missing keystone species like large carnivores.

Their influential 1998 paper on “continental conservation” framed rewilding as a strategy to rebuild self-sustaining, interconnected ecosystems at very large scales.  

Trophic Rewilding Uses Big Animals to Repair Food Webs

“Trophic rewilding” focuses on bringing back large herbivores and predators so they can revive disrupted food chains.

For example, the reintroduction of wolves to Yellowstone National Park in the 1990s changed elk behavior, which allowed riverbank vegetation and beavers to recover, improving habitat for birds, fish, and amphibians.

This kind of top‑down influence by big animals is now a central rationale for many rewilding projects worldwide.  

Passive Rewilding Lets Abandoned Land Turn Wild Again

Not all rewilding relies on active planting or animal releases. Long-term studies in Europe have found that when farmland is simply abandoned and left alone, native trees and shrubs naturally recolonize, soils recover, and woodland wildlife returns within a few decades.

Research from Spain and the United Kingdom shows that “passive rewilding” can be a cost‑effective way to expand forest cover and habitat on marginal agricultural land.  

Rewilding Can Lock Away Large Amounts of Carbon

Scientists increasingly view rewilding as a climate strategy because recovering ecosystems can store more carbon in vegetation and soils.

Modeling by Oxford and Leeds researchers suggests that restoring “megafauna” populations and their habitats could boost natural carbon storage enough to remove significant amounts of CO₂ this century, particularly through the recovery of forests, peatlands, and coastal wetlands.  

Europe’s Bison Comeback Is a Rewilding Success Story

The European bison, once hunted to extinction in the wild, has been reintroduced through rewilding efforts in countries such as Poland, Romania, and the Netherlands.

Free‑roaming herds now shape grasslands and young forests by grazing, trampling, and dispersing seeds, which increases plant diversity and creates habitat for insects and birds. Conservationists consider the species’ return one of Europe’s clearest examples of rewilding in action.  

River Rewilding Can Quickly Restore Wetland Wildlife 

Rewilding does not just happen on land. In Florida, the decades‑long restoration of the Kissimmee River, which had been channelized for flood control, involved re‑meandering 40 miles of river and reflooding more than 40 square miles of floodplain.

Within a few years, wetland birds such as ibises and herons increased dramatically, and native fish communities began to rebound, demonstrating how river rewilding can rapidly revive lost wetlands.

Large Carnivore Returns Often Reduce Conflicts Over Time

Rewilding sometimes brings back predators like wolves and lynx to landscapes where people live and farm.

While conflicts with livestock can spike initially, long-term studies from Europe show that better herding practices, guardian animals, and compensation schemes can reduce losses and gradually increase public acceptance.

In countries like Italy and Spain, stable or growing wolf populations now coexist with pastoral economies where coexistence measures are widely used.