Chapter 6 Reading Guide
Population and Community Ecology
Module 18: The Abundance and Distribution of Populations
1. Difference between Population and A population is the individuals that belong to the
Community. same species and live in a given area at a
particular time, while a community is made up of
all the populations of organisms within a given
area.
2. Compare and contrast Population size, Population Size: total number of individuals
Population density, and Population within a defined area at a given time.
Distribution. Population Density: the number of individuals per
unit area at a given time.
Population Distribution: the description of how
individuals are distributed with respect to one
another.
3. Differentiate between density dependent The DDF will influence an individual’s
and density dependent factors limiting probability of survival and reproduction in a
population size. manner that depends on the size of the population.
The DIF will have the same effect on an
individual’s chance of survival and the amount of
reproduction at any population size.
4. Module 18 Review questions 1. C.
2. C.
3. C.
4. D.
5. E.
Module 19: Population Growth Models
5. Intrinsic and Exponential Growth are the Exponential growth occurs when the growth rate
same type of uncontrolled, exponential of the value of a mathematical function is
growth. What circumstances would allow proportional to the function's current value. The
a population to grow exponentially. intrinsic growth rate and the number of
reproducing individuals that are currently in the
population would allow a population to grow
exponentially.
6. Describe logistical growth model and A logistical growth model is a growth model that
what happen when a population exceeds describes a population whose growth is initially
carrying capacity. exponential, but slows as the population
approaches the carrying capacity of the
environment. An overshot will occur when a
population exceeds its carrying capacity.
7. Compare and contrast R Versus K K: a species with a low intrinsic growth rate that
selected species. Name 3 examples of causes a population to increase slowly until it
each. reaches carrying capacity. EX: birds, elephants,
horses
R: a species that has high intrinsic growth rate, off
which often leads to population overshoots and
die-offs. EX: rodents, insects, weeds.
This study source was downloaded by 100000835361505 from CourseHero.com on 01-29-2022 04:14:37 GMT -06:00
https://www.coursehero.com/file/15041030/-Chapter6/
Population and Community Ecology
Module 18: The Abundance and Distribution of Populations
1. Difference between Population and A population is the individuals that belong to the
Community. same species and live in a given area at a
particular time, while a community is made up of
all the populations of organisms within a given
area.
2. Compare and contrast Population size, Population Size: total number of individuals
Population density, and Population within a defined area at a given time.
Distribution. Population Density: the number of individuals per
unit area at a given time.
Population Distribution: the description of how
individuals are distributed with respect to one
another.
3. Differentiate between density dependent The DDF will influence an individual’s
and density dependent factors limiting probability of survival and reproduction in a
population size. manner that depends on the size of the population.
The DIF will have the same effect on an
individual’s chance of survival and the amount of
reproduction at any population size.
4. Module 18 Review questions 1. C.
2. C.
3. C.
4. D.
5. E.
Module 19: Population Growth Models
5. Intrinsic and Exponential Growth are the Exponential growth occurs when the growth rate
same type of uncontrolled, exponential of the value of a mathematical function is
growth. What circumstances would allow proportional to the function's current value. The
a population to grow exponentially. intrinsic growth rate and the number of
reproducing individuals that are currently in the
population would allow a population to grow
exponentially.
6. Describe logistical growth model and A logistical growth model is a growth model that
what happen when a population exceeds describes a population whose growth is initially
carrying capacity. exponential, but slows as the population
approaches the carrying capacity of the
environment. An overshot will occur when a
population exceeds its carrying capacity.
7. Compare and contrast R Versus K K: a species with a low intrinsic growth rate that
selected species. Name 3 examples of causes a population to increase slowly until it
each. reaches carrying capacity. EX: birds, elephants,
horses
R: a species that has high intrinsic growth rate, off
which often leads to population overshoots and
die-offs. EX: rodents, insects, weeds.
This study source was downloaded by 100000835361505 from CourseHero.com on 01-29-2022 04:14:37 GMT -06:00
https://www.coursehero.com/file/15041030/-Chapter6/
