CAS BI 108 Chapter Notes - Chapter 53: Population Ecology, Survivorship Curve, Semelparity And Iteroparity
Document Summary
Identify the key statistics used to describe population ecology. Describe and utilize the two main models of population density. List factors influencing population density in individuals. Understand the implications of human population growth rates. Demography is the study of how statistics of a population change over time; these vital. Populations are groups of organisms of a specific species that live within the same area. Density describes the amount of individuals of a given population in a given area or volume, whereas dispersion refers to the spacing pattern of individuals within a given area. Density changes over time in response to births/deaths as well as immigration and emigration; the movement of individuals into and out of populations respectively. There are various dispersion patterns, with clumping being a common pattern where individuals cluster around a source of nutrients such as a rotting log.
