Overpopulation results from an increased birth rate, decreased death rate, the immigration to a new ecological niche with fewer predators, or the sudden decline in available resources. Therefore, overpopulation describes a situation in which a population in a given ecosystem limit the resources available for survival.
August 19, 2017. Overpopulation refers to a population which exceeds its sustainable size within a particular environment or habitat. Overpopulation results from an increased birth rate, decreased death rate, the immigration to a new ecological niche with fewer predators, or the sudden decline in available resources.
A reduction in available resources can result in overpopulation if the amount of available resources cannot sustain the population within that region. Some examples include desert environments or times of drought which make crops and other sources of food scarce. 1. Which of the following is NOT a cause of overpopulation:
While the overpopulation of rabbits destroyed farmers crops, leading to poor yields, the continent also experienced a loss of native plant species, as well as the removal of precious topsoil due to erosion. Another effect of the overpopulation of one species, is the increased population growth of the natural predators of such species.
The overpopulation of a species can result from a variety of factors. The most common include: 1 The introduction of a foreign species for which it has no natural predators. Often, such species become invasive, as seen in the above examples of zebra mussels and the introduction of rabbits in Australia. 2 An increased birth rate will result in population growth, which can lead to the overpopulation of a species if such growth exceeds the resources within a particular geographic area. 3 Decreased mortality rates can result in the overpopulation of a species if the increased lifespan of a species results in limiting the available resources within an ecological niche. 4 A reduction in available resources can result in overpopulation if the amount of available resources cannot sustain the population within that region. Some examples include desert environments or times of drought which make crops and other sources of food scarce.
Causes of Overpopulation. The overpopulation of a species can result from a variety of factors. The most common include: The introduction of a foreign species for which it has no natural predators. Often, such species become invasive, as seen in the above examples of zebra mussels and the introduction of rabbits in Australia.
Overpopulation can have several effects on the environment, as well as other species within an ecological system. Indeed, human overpopulation has resulted in technological advances which have increased human lifespan and fertility, and consequently placed pressure on global resources. Such effects are such that the planet is currently in a novel geological epoch called the Anthropocene. In general, overpopulation results in an ecological disruption as resources are depleted. This disruption can lead to the decline of other populations which compete for the same resources. Typically, such effects result in the cycling between periods of population growth and periods of population decline until it can reach homeostasis within a particular ecological niche. Some examples of naturally regulated population growth are rodents, rabbits, and various insect populations (e.g., army worms and locusts).
While the overpopulation of rabbits destroyed farmers crops, leading to poor yields, the continent also experienced a loss of native plant species, as well as the removal of precious topsoil due to erosion. Another effect of the overpopulation of one species, is the increased population growth of the natural predators of such species .
An increased birth rate will result in population growth, which can lead to the overpopulation of a species if such growth exceeds the resources within a particular geographic area. Decreased mortality rates can result in the overpopulation of a species if the increased lifespan of a species results in limiting the available resources within an ...
Some examples of naturally regulated population growth are rodents, rabbits, and various insect populations (e.g., army worms and locusts).
Increased population growth due to an increased both rate and decreased mortality rate and the absence of predators can all cause a species to become overpopulated. An increased mortality rate would have the opposite effect. 2.