Chapter 8 Understanding Population Change
Subject:
Understanding Population Change #8 Jonathan Foronda I. Principles of Population *Population Ecology- deals with the number of individuals of a particular species that are found in an area and how and why those numbers increase or decrease over time. A. Population Density 1. Populations have certain properties that individual organisms lack, such as population density, birth and death rates, growth rates, and age structure. 2. Population Density- the number of individuals of a species per unit of area or volume at a given time. a. May be determined in large part by external factors in the environment B. How Do Populations Change in Size?