which would be least likely to be affected by a density-dependent limiting factor? a large, dense...
TRANSCRIPT
![Page 1: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/1.jpg)
Which would be least likely to be affected by a density-dependent
limiting factor?A large, dense population or a small, scattered population
A small, scattered population
![Page 2: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/2.jpg)
Two ways a population can decrease in size?
decreased birthrate and emigration
![Page 3: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/3.jpg)
Suppose that a species of fish is introduced into a new environment in an attempt to reduce the population of
insects. The fish has no natural predators in the new environment.
The fish population would most likely
increase exponentially.
![Page 4: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/4.jpg)
A disease resulting in the deaths of one third of a dense population of bats
in a cave would be
density-dependent limiting factor.
![Page 5: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/5.jpg)
The pattern of spacing between individuals across the range of a
population is its
distribution.
![Page 6: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/6.jpg)
Something that controls the growth or size of a
population is
a limiting factor.
![Page 7: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/7.jpg)
How would you describe a population that is decreasing in size?
The death rate is becoming higher than the birthrate.
![Page 8: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/8.jpg)
The various growth phases through which most populations go are
represented on
a logistic growth curve.
![Page 9: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/9.jpg)
If you know the range of a population, then
you know
the areas that are inhabited by the population.
![Page 10: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/10.jpg)
During some kinds of population growth, the size of each generation of offspring is larger than the generation before it. So, as the population gets larger, it grows more quickly. This
situation is called
exponential growth.
![Page 11: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/11.jpg)
Demography is the scientific study of
human populations.
![Page 12: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/12.jpg)
The movement of organisms into a range is called
immigration.
![Page 13: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/13.jpg)
If the death rate of a population is greater than the birthrate, the
population
decreases
![Page 14: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/14.jpg)
There are 150 Saguaro cactus plants per square kilometer in a 10-square-kilometer area of Arizona
desert. To which population characteristic does this information
refer?
population density
![Page 15: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/15.jpg)
____________ __________limiting factors affect all populations, whether
the population size is two or two hundred.
Density-independent
![Page 16: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/16.jpg)
When you graph a population’s exponential growth over time, you
will have an _________ graph.
J-shaped
![Page 17: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/17.jpg)
___________ growth occurs when a population’s growth slows or stops, following a period of rapid growth.
Logistic
![Page 18: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/18.jpg)
The __________ model of population growth accounts for the influence of
carrying capacity.
logistic
![Page 19: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/19.jpg)
An indication that a country has completed the demographic transition is a ____ birthrate and a _____death
rate.
Low, low
![Page 20: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/20.jpg)
Emigration can cause a population to ____________________ in size.
decrease
![Page 21: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/21.jpg)
Scientists who study human populations and predict the growth rate of the world and of individual
countries study the science of ____________________.
demography
![Page 22: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/22.jpg)
A population of bacteria with an unlimited supply of nutrients will
eventually show ____________________ growth.
exponential
![Page 23: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/23.jpg)
If a population is undergoing logistic growth, it may have a growth rate
near zero once the ____________________ has been
reached.
carrying capacity
![Page 24: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/24.jpg)
Identify 3 limiting factors that depend on population density.
Density-dependent limiting factors become limiting only when the population
density—the number of organisms in a given area—reaches a certain level. These
factors include competition, predation, parasitism, and disease.
![Page 25: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/25.jpg)
Identify 3 limiting factors that do not depend on population density.
Density-independent limiting factors affect all populations in similar ways, regardless of population size. These
limiting factors include weather, natural disasters, and certain human activities,
such as damming rivers and clear-cutting forests.
![Page 26: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/26.jpg)
List the three patterns of distribution.
Random, uniform, clumped
![Page 27: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/27.jpg)
List the four factors that affect population growth.
birth rate
death rate
immigration
emigration
![Page 28: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/28.jpg)
Compare and contrast the graph of exponential growth to the graph of
logistic growth.
The pattern of exponential growth is a J-shaped curve. The pattern of
logistic growth is an S-shaped curve.
![Page 29: Which would be least likely to be affected by a density-dependent limiting factor? A large, dense population or a small, scattered population A small,](https://reader036.vdocuments.net/reader036/viewer/2022062308/56649ebb5503460f94bc353e/html5/thumbnails/29.jpg)
What will reduce competition within a species’ population?
Fewer individuals