Populations within ecosystems change over time in response to a variety of factors. This unit examines the relationship between the type of species and the changes in a habitat over time. Specialist species are advantages by habitats that remain constant, while generalist species tend to be advantaged by habitats that are changing. Different reproductive patterns, including those exhibited by K- and r- selected species, also impact changes to population. Population growth is limited by environmental factors, especially by the availability of resources and space. In later units, we will explore how increases in populations affect earth systems and resources, land and water use, and energy resources.
Big Idea: Interactions Between Earth Systems: Populations change over time in a reaction to variety of factors Interactions Between Different Species and the Environment: Human populations change in reaction to a variety of factors, including social and cultural factors. |