BIOL 102 Lecture Notes - Lecture 22: Parvovirus, Population Control, Old Age
Document Summary
Individual level- how an individual organism fares in its surroundings. Population level- a group of individuals of the same species living and interacting in the same region. Ecosystem level- species interacting with other species and the environment. Depends on resources and interactions with other members of the population. May allow individuals to maximize their access to resources. When resources are unevenly distributed across the landscaped. Exponential growth: unrestricted growth of a population increasing at a constant growth rate. Logistic growth: starts off fast and then levels off, environmental factors will limit an organism"s ability to reproduce, for example, access to habitat: the physical environment where an organism lives and to which it is adapted. Growth rate is limited by a single limiting resource. The max number of individuals that an environment can support given its space and resources. Upper limit on the size of any population.
