Sentences with phrase «predator populations boomed»

Not exact matches

For the booming moose population of Isle Royale, a key species in the world's longest running predator - prey study on the island, skulls have shrunk by about 16 percent over a 40 - year period.

The changes in biomass are worrying, says Michael Hirshfield, chief scientist of the advocacy group Oceana, based in Washington, D.C. Populations of small fish tend to boom and bust — making ecosystems less stable — much more when the ranks of top predators have been gutted.

«In a predator - prey cycle, such as mice and weasels or hares and lynx, the reason why populations go through periodic booms and busts has nothing to do with any external clocks,» he writes.»