Ecology and natural selection

Describes natural selection in terms of heritable variation in one or more traits or attributes which is associated with differences in demography, and considers a few of the implications of such a definition. The importance of natural selection to population dynamics and probability of extinction is discussed. Major shifts in trait frequencies as a result of continuous directional natural selection can affect the success of a species in a constant or changing environment, as well as its ability to compete with other species, find food, or escape predators. Other implications, including indirect effects, are noted. -P.J.Jarvis