Researchers have discovered the oldest known example of a predator-prey “arms race,” based on their study of ancient fossils. This ancient predator-prey relationship took place 517 million years ago ...

By Ruth Kamnitzer Open any ecology textbook and you’ll find the Canada lynx, the snowshoe hare, and their wildly oscillating population cycles offered as a classic example of the intimate relationship ...

Population cycles: causes and analysis / Alan A. Berryman -- The role of insect parasitoids in population cycles of the spruce needleminer in Denmark / Mikael Münster-Swendsen -- Population cycles of ...