Megaherbivore Rewilding & Permafrost Feedback: A Natural Solution to Climate Change

What Megaherbivore Rewilding Is

Megaherbivore rewilding involves reintroducing large herbivores, such as bison or muskoxen, to ecosystems where they have been absent for centuries. These animals play a crucial role in shaping their environment through grazing and trampling activities.

In the context of permafrost regions, megaherbivores can influence soil temperature by altering snow cover and insulating properties, which affects how quickly frozen ground thaws.

How Permafrost Feedback Works

Permafrost is permanently frozen ground found in cold regions. As global temperatures rise, permafrost begins to thaw, releasing methane and carbon dioxide into the atmosphere, which further accelerates climate change.

Megaherbivores can help mitigate this feedback by trampling snow, exposing darker soil or vegetation that absorbs more solar radiation, thereby cooling the ground beneath.

The Pleistocene Park Hypothesis

The Pleistocene Park rewilding hypothesis suggests that reintroducing megaherbivores to Arctic regions can help slow permafrost thaw. This idea is based on observations from the Siberian Arctic, where bison-like animals have been shown to reduce snow depth and alter soil insulation.

By manipulating the landscape through their grazing and trampling activities, these herbivores can create microclimates that are cooler than those under undisturbed snow cover.

Real-World Applications

Megaherbivore rewilding is not just a theoretical concept; it has real-world applications in conservation and climate change mitigation. For example, the reintroduction of bison to North America’s prairies can help restore ecological balance and potentially slow permafrost thaw.

However, implementing such strategies requires careful consideration of local ecosystems and potential impacts on indigenous communities.

Frequently asked questions

Try it live

Everything above runs in your browser — open Megaherbivore Rewilding & Permafrost Feedback and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.