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18 Questions

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BIO330 Chapter 2: Population Ecology

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Questions and Answers

What is the primary difference between a population and a community?

The number of individuals of one species (correct)

The number of species present

The resources available to them

The geographic area they inhabit

Which of the following factors affect population dynamics?

Temperature, precipitation, and climate

Births, deaths, immigration, and emigration (correct)

Births, deaths, and sunlight

Soil type, altitude, and natural disasters

What is the primary focus of population ecology?

The study of ecosystem services

The study of a single organism's behavior

The study of species evolution over time

The study of mechanisms responsible for changes in population distribution and abundance (correct)

What is the primary method ecologists use to estimate population size?

Counting individuals within a small sample area and extrapolating to the larger population Signup and view all the answers

What are the two important characteristics of any population?

Density and dispersion Signup and view all the answers

What is a major risk faced by small populations?

Inbreeding Signup and view all the answers

What is the study of the factors that affect the increase, stability, or decrease of a population over time?

Population dynamics Signup and view all the answers

What does the logistic growth model incorporate that the exponential growth model does not?

Carrying capacity Signup and view all the answers

What is the study of factors that affect birth and death rates in a population?

Demography Signup and view all the answers

What is the most fundamental population and demographic parameter?

Population size Signup and view all the answers

What defines a population?

A group of individuals in a particular geographic area that belong to the same species Signup and view all the answers

How does a population differ from a species?

A population is a subgroup of a species Signup and view all the answers

What is the result of increased competition for resources as a population approaches its carrying capacity?

Lowered fecundity and habitat degradation Signup and view all the answers

What is population density defined as?

The number of individuals per unit area or volume Signup and view all the answers

What is one method ecologists use to measure population density?

Counting individuals in a few representative plots Signup and view all the answers

What is the capture-mark-recapture method used for?

Estimating population size and density Signup and view all the answers

What is an example of uniform population dispersion?

Plants that are evenly spaced due to competition for resources Signup and view all the answers

What is an example of clumped population dispersion?

Individuals aggregated in patches due to uneven resource distribution Signup and view all the answers