Species play essential roles in ecosystems, so local and global ... such that as the number of species in the community goes up, the average population sizes of the species in the community ...

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.

U.S. bird populations are experiencing alarming declines due to factors such as habitat loss and climate change, according to ...

The development of agriculture led to a population explosion that has accelerated enormously during the past 500 years. Unlike other species, humans can adapt to and survive in almost all ...

“This process essentially looks at the rate of genetic mutations as a guide for a species' evolutionary history,” said Corso. “We hypothesize that a population of dragonfishes may have ...

This is the fishery context of the Bering Sea ecosystem, especially for finfish (as opposed to crab species, whose populations are quite low). First, it is clear that there have indeed been many ...

A major review of over 67,000 animal species has found that while the natural world continues to face a biodiversity crisis, targeted conservation efforts are helping bring many species back from the ...