A keystone in an arch's crown secures the other stones in place. Keystone species play the same role in many ecological communities by maintaining the structure and integrity of the community. The ...

Wild and semi-wild plants are factual resources for a local community when they satisfy its needs. According to the bio-cultural approach, these plants and associated knowledge help define the ...

Many gardeners know the key role milkweed (Asclepias) plays in bringing back declining numbers of monarch butterflies. But other species of Lepidoptera, other butterflies and moths need help, too.

What if I told you that this one simple trick could lead Arizona to more water, better grazing conditions and healthier, more diverse wildlife? There is ample research that gray wolves are a keystone ...

Florida is home to plenty of species that need no introduction: alligators, crocodiles, panthers, or manatees. However, a ...

Some species play an outsize role in the environment they inhabit. Beavers build dams that create ponds where fish thrive. Otters in kelp forests eat enough sea urchins so that the kelp can grow ...

Burrow-nesting petrels (order Procellariiform.es) are keystone species in island ecosystems, where they modify habitat through guano deposition and burrow digging. Burrowing petrels are among the most ...