Populations

What is a population?

• A group of unrelated organisms living together
• The number of individuals in a single species
• The total area covered by a species
• All the individuals of a particular species living within a specific geographic area.

What do ecologists focus on?

• Marine biology

• Predation

• Ecological relationships and environmental interactions.
• Survival curves

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What does population size determine?

• Death Rates

• The health of a population and ecosystem

• Distance between populations

• The health of a population and oceans

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What is population density?

• Population density is the average income of people living in a specific area.
• Population density is the number of animals living in a specific area.
• Population density is the total land area of a specific region.
• Population density is the number of people living in a specific area.

What varies with size of population?

• Births, deaths, emigration and immigration

• Emigration and immigration

• Survivorship curves, deaths, emigration and immigration

• Type I, II, III curves

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Increased population density makes finding a mate easier but ________ _______ for resources.

• Decreases: Predation

• Increases; Competition

• Decreases: Competition

• Increases; Predation

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What does the following image represent?

• Population Density

• Population Demographics

• Population Distribution

• Population Rates

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What is population distribution?

• Population distribution is the way in which animals are spread across a given area.
• Population distribution refers to the distribution of wealth among individuals in a society.
• Population distribution is the process of dividing a population into different age groups.
• Population distribution is the way in which people are spread across a given area.

Define population demographics.

• Statistical characteristics of a population, including age, gender, income, education level, and ethnicity.
• The study of individual characteristics within a population
• The study of animal populations in a specific region
• The study of plant populations in a specific region

What is a density-dependent factor?

• A density-dependent factor is a factor that influences population growth based on the weather conditions.
• A density-dependent factor is a factor that affects population size regardless of density.
• A density-dependent factor is a factor that only impacts individual organisms within a population.
• A density-dependent factor is a factor that influences population regulation based on the population's density.

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