New research has uncovered a crucial clue to understanding the spread of "barrens" in the Great Southern Reef, which are ...

Sea otters are keystone species in kelp forests. Kelp forests rely on the top-down pressure sea otters exert via predation on ...

Archaeologists in West Texas have made an astonishing discovery which sheds light on the lives of prehistoric humans in ...

1993). There are a number of other well-described examples where keystone species act as determinate predators. Sea otters (i) regulate sea urchin populations, which in turn feed upon kelp and ...