Life sciences/Ecology/Population biology/Population ecology/Natural populations
Despite conservation efforts across an entire continent, the African elephant is becoming more endangered, not less, due, in large part, to poachers.
The Christmas Bird Count is one of the oldest citizen projects in the U.S.
Predators directly affect their prey by eating them up. But they can also influence their prey’s population dynamics in another important way, a new study reveals.
While experimenting with song sparrows, a team of researchers found that merely the perceived risk of predation—even if no actual predator was nearby—could decrease the number of offspring produced by the sparrows. And this perceived risk of predation also reduced the survival rates of the fledgling sparrows that were hatched, they say.
New research into the genealogies of early Canadian pioneers suggests that the settlers who were first to colonize a new region produced more offspring than the settlers who followed them.