On this side of the Atlantic, people mostly associate reindeer with Christmas and Santa’s sleigh. However, people who live in ...

Some animals matter so much to their ecosystems that losing them is like removing the keystone from an arch—the entire structure begins to collapse. These keystone species shape food webs, carve out ...

New research is causing the original keystone species, the ochre sea star Pisaster ochraceus, to lose some of its supposed ecosystem-controlling powers. Photo by Jeff Rotman/Alamy Stock Photo This ...

Visitors from the North -- Web of life. Patterns in an ecosystem ; Living in a landscape of fear : trophic cascades mechanisms ; Origins : aquatic cascades ; Why the earth is green : terrestrial ...

A keystone species died in the iconic Rocky Mountain National Park after the apex predator’s long-awaited return to where they first roamed. Photo by Michael Ahn via Unsplash A protected apex predator ...

A bison grazes in front of an Illinois Nature Preserves Commission sign. Restoring keystone species like this one is a major goal of rewilding. A new law in Illinois formalizes efforts to reintroduce ...

A keystone species visited the iconic Rocky Mountain National Park, where the apex predators first roamed before they were wiped out from the state entirely. Photo by Michael Ahn via Unsplash An apex ...