BIOA02H3 Chapter 54: Chapter 54 notes
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BIOA02H3 Full Course Notes
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54. 1: population: any group of organisms coexisting at the same time and in the same place and capable of interbreeding with one another. population structure: the proportions of individuals in a population belonging to different age classes (age structure). Poorer nutrition may then increase death rates and decrease birth rates: predators may be attracted to areas with high densities of their prey. Thus, on average, animals that eat plants are typically more common than animals that eat other animals. www. notesolution. com: species with small body sizes generally reach higher population densities than species with large body sizes. In general, population density decreases as body size increases, because small individuals require less energy to survive than large individuals: some newly introduced species reach high population densities. Species that have recently escaped control by the factors that normally prevent them from becoming more abundant may achieve temporarily high population densities.
