The Key to Ecosystem Resilience in a Changing World The field of ecological research has long established that plant ...

Sea urchins climb onto kelp when their densities are so high they remove all drift kelp and then actively forage on attached, living kelp. (Credit: Steve Lonhart / NOAA MBNMS) Tipping points are the ...

For decades, ecologists have puzzled over a mystery: Why do some natural habitats get overrun by invasive species while others seem to repel outside threats? In a classic 1958 book on the subject, the ...

Rare and powerful compounds, known as keystone molecules, can build a web of invisible interactions among species. The biological world is awash in chemical signals. Ants lead their nest mates to food ...