Population Ecology
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AP Environmental Science › Population Ecology
K-strategist populations are more commonly regulated by limiting factors, and r-strategist populations are regulated by limiting factors.
density-dependent, density-independent
density-independent, density-independent
density-independent, density-dependent
density-dependent, density-dependent
none of these
Explanation
K-strategist populations are more commonly regulated by density-dependent limiting factors. Their population sizes hover around a carrying capacity that is dependent on factors that increase in severity with the density of the population. On the other hand, r-strategist populations are regulated by density-independent limiting factors. They reproduce rapidly until a density-independent factor causes many of them to die.
How is "cultural carrying capacity" different from "biological carrying capacity?"
Cultural carrying capacity describes the number of individuals that can exist alongside one another at a reasonable standard of living. Biological carrying capacity describes how many individuals can survive.
Cultural carrying capacity describes the ability of a human population to thrive and create culture in meager circumstances. Biological carrying capacity describes how many individuals can survive.
Cultural carrying capacity describes the number of individuals that can exist alongside one another at a reasonable standard of living. Biological carrying capacity describes which species are able to coexist in a niche.
Cultural carrying capacity predicts which human populations (depending on factors such as location, weather, and level of city planning) are most likely to develop a set of customs and laws. Biological carrying capacity describes the carrying capacity of each household in the community.
Cultural carrying capacity predicts the amount of "melting pot influence" that a society can withstand while still holding on to cultural beliefs and traditions. Biological carrying capacity describes how many individuals can survive.
Explanation
Cultural carrying capacity suggests that humans have secondary needs, such as entertainment, palatable food, and mental/spiritual development. These non-vital resources can only be spread equally among a population of a limited size. Cultural carrying capacity describes the limitation on population size after taking into account these factors.
A frequent questions asked by sustainability scientists is: Should the optimum sustainable population be based on cultural carrying capacity? Many would agree yes, for the reason that when cultural capacity is transgressed, living conditions spiral downwards and life is reduced to the struggle for mere survival. In such conditions, human inventiveness and creativity become obsolete.
K-strategist populations are more commonly regulated by limiting factors, and r-strategist populations are regulated by limiting factors.
density-dependent, density-independent
density-independent, density-independent
density-independent, density-dependent
density-dependent, density-dependent
none of these
Explanation
K-strategist populations are more commonly regulated by density-dependent limiting factors. Their population sizes hover around a carrying capacity that is dependent on factors that increase in severity with the density of the population. On the other hand, r-strategist populations are regulated by density-independent limiting factors. They reproduce rapidly until a density-independent factor causes many of them to die.
How is "cultural carrying capacity" different from "biological carrying capacity?"
Cultural carrying capacity describes the number of individuals that can exist alongside one another at a reasonable standard of living. Biological carrying capacity describes how many individuals can survive.
Cultural carrying capacity describes the ability of a human population to thrive and create culture in meager circumstances. Biological carrying capacity describes how many individuals can survive.
Cultural carrying capacity describes the number of individuals that can exist alongside one another at a reasonable standard of living. Biological carrying capacity describes which species are able to coexist in a niche.
Cultural carrying capacity predicts which human populations (depending on factors such as location, weather, and level of city planning) are most likely to develop a set of customs and laws. Biological carrying capacity describes the carrying capacity of each household in the community.
Cultural carrying capacity predicts the amount of "melting pot influence" that a society can withstand while still holding on to cultural beliefs and traditions. Biological carrying capacity describes how many individuals can survive.
Explanation
Cultural carrying capacity suggests that humans have secondary needs, such as entertainment, palatable food, and mental/spiritual development. These non-vital resources can only be spread equally among a population of a limited size. Cultural carrying capacity describes the limitation on population size after taking into account these factors.
A frequent questions asked by sustainability scientists is: Should the optimum sustainable population be based on cultural carrying capacity? Many would agree yes, for the reason that when cultural capacity is transgressed, living conditions spiral downwards and life is reduced to the struggle for mere survival. In such conditions, human inventiveness and creativity become obsolete.
A scientist observed a population of leafhoppers at a research station in the Oak Openings region over the course of two years. She noticed that the only factor regulating the size of the leafhopper population was forest fires. Based on her observation, what ecological principle explains the growth rate of the leafhoppers?
Density independence
Density dependence
Island biogeography
Metapopulation theory
Explanation
The correct response is density independence. The leafhopper population was not regulated by density. The only thing that regulated the population was abiotic events, such as forest fires.
A scientist observed a population of leafhoppers at a research station in the Oak Openings region over the course of two years. She noticed that the only factor regulating the size of the leafhopper population was forest fires. Based on her observation, what ecological principle explains the growth rate of the leafhoppers?
Density independence
Density dependence
Island biogeography
Metapopulation theory
Explanation
The correct response is density independence. The leafhopper population was not regulated by density. The only thing that regulated the population was abiotic events, such as forest fires.
A certain country has an initial population of 52,800 people. In 2015, there were 870 births, 517 deaths, 1,700 immigrants, and 1,300 emigrants. What is the population growth rate for 2015?
Explanation
The population growth rate is a measure of population change over a given time.
The first step to calculate this rate is to add up the number of people arriving in the country (through births and immigration) and, separately, add the number of people leaving the country (through death or emigration). Then we subtract those leaving the country from those entering the country to obtain a value for the change in population.
After calculating the change in population, we can calculate the population growth rate. Don’t forget to multiply the ratio between change in population and initial population by 100 to convert from decimal into percent.
A certain country has an initial population of 52,800 people. In 2015, there were 870 births, 517 deaths, 1,700 immigrants, and 1,300 emigrants. What is the population growth rate for 2015?
Explanation
The population growth rate is a measure of population change over a given time.
The first step to calculate this rate is to add up the number of people arriving in the country (through births and immigration) and, separately, add the number of people leaving the country (through death or emigration). Then we subtract those leaving the country from those entering the country to obtain a value for the change in population.
After calculating the change in population, we can calculate the population growth rate. Don’t forget to multiply the ratio between change in population and initial population by 100 to convert from decimal into percent.
Which is true for clumped distribution patterns?
The distance between individuals in minimized
Sources are abundant throughout the environment
It is rarely seen in nature
It does not affect predation patterns
Explanation
Clumped distribution patterns localize individuals around scarce resources in environments where they are not equally distributed throughout. The clumping of organisms around these resources attracts predators and makes for easy predation. Because of the scarcity of water in desert, plain and tundra biomes, it is seen in large quantities in nature.
Which is true for clumped distribution patterns?
The distance between individuals in minimized
Sources are abundant throughout the environment
It is rarely seen in nature
It does not affect predation patterns
Explanation
Clumped distribution patterns localize individuals around scarce resources in environments where they are not equally distributed throughout. The clumping of organisms around these resources attracts predators and makes for easy predation. Because of the scarcity of water in desert, plain and tundra biomes, it is seen in large quantities in nature.