Apes Ch 9 Outline
Bob Kamburov
Chapter 6 Outline
I. Population Dynamics and Carrying Capacity * Populations change in size, density, and age distribution; most members of populations live together in clumps or groups. * Three general patterns in a habitat: clumping, uniform distribution, and random dispersion. Most live in clumps or groups. * Availability of resources varies from place to place. * Living in groups offers better protection from predators. * Some predator species live in packs to better have a chance to get a meal. * Temporary groups may form for mating and caring for young. * Uniform pattern distribution may occur where a resource is scarce. * Four variables influence population size: births, deaths, immigration, emigration. * Increase in population -birth and immigration. * Decrease in population - death and emigration. * Age structure of a pop. is usually described as the pre-reproductive stage, reproductive stage and post-reproductive stage. * large reproductive stage is likely to increase, while a population with a large post-reproductive stage is likely to decrease. * No population can grow indefinitely due to limited resources such as light, water, and nutrients and also due to competitors and/or predators. biotic potential is the populations capacity for growth. * intrinsic rate of increase is the rate of population growth with unlimited resources. * Rapidly growing populations have four characteristics. * reproduce early in life * short periods between generations * long reproductive lives * multiple offspring each time they reproduce. * Environmental resistance - factors that limit population growth. * Carrying capacity is determined by biotic potential and environmental resistance. This is the number of a species’ individuals that can be sustained indefinitely in a specific space. * As a population reaches
Chapter 6 Outline
I. Population Dynamics and Carrying Capacity * Populations change in size, density, and age distribution; most members of populations live together in clumps or groups. * Three general patterns in a habitat: clumping, uniform distribution, and random dispersion. Most live in clumps or groups. * Availability of resources varies from place to place. * Living in groups offers better protection from predators. * Some predator species live in packs to better have a chance to get a meal. * Temporary groups may form for mating and caring for young. * Uniform pattern distribution may occur where a resource is scarce. * Four variables influence population size: births, deaths, immigration, emigration. * Increase in population -birth and immigration. * Decrease in population - death and emigration. * Age structure of a pop. is usually described as the pre-reproductive stage, reproductive stage and post-reproductive stage. * large reproductive stage is likely to increase, while a population with a large post-reproductive stage is likely to decrease. * No population can grow indefinitely due to limited resources such as light, water, and nutrients and also due to competitors and/or predators. biotic potential is the populations capacity for growth. * intrinsic rate of increase is the rate of population growth with unlimited resources. * Rapidly growing populations have four characteristics. * reproduce early in life * short periods between generations * long reproductive lives * multiple offspring each time they reproduce. * Environmental resistance - factors that limit population growth. * Carrying capacity is determined by biotic potential and environmental resistance. This is the number of a species’ individuals that can be sustained indefinitely in a specific space. * As a population reaches