Bio. Ch. 5.2
| A | B |
|---|---|
| Give examples of density-independent limiting factors in a population. | Natural disasters can cause a sudden decline in population, as can human activities (damming a river; over-cutting a forest); unusual weather; seasonal cycles. |
Which is a density independent factor quizlet?
environmental factors, such as storms, droughts, and pollution that affect all populations that they come in contact with, regardless of population size.
Which is an example of a density independent factor on a population quizlet?
A density-independent factor is one where the effect of the factor on the size of the population is independent of and does NOT depend upon the original density or size of the population. The effect of weather is an example of a density-independent factor.
Are dams density-dependent or density independent limiting factors?
Answer: Dams are density – independent . it doesn’t ensure the availability of daily needs.
Which of the following is not a density independent factor?
Generally natural calamities, climate changes, and environmental stresses are the factors of density-independent factors. The predation belongs to the density-dependent factor because it does not occur via climatic changes. Therefore, the correct answer is C.) predation.
What are some density-dependent factors that might limit the jackrabbit population?
Jackrabbit abundance and population fluctuations are influenced by a variety of environmental factors. Population die-offs may be driven by a suite of density-dependent factors, including parasites and diseases, food availability, and predators.
Which is a density independent factor answers com?
Which is a density independent factor in controlling a population? Answer: Density-independent factors, such as weather and climate, exert their influences on population size regardless of the population’s density. In contrast, the effects of density-dependent factors intensify as the population increases in size.
What is density-dependent?
density-dependent factor, also called regulating factor, in ecology, any force that affects the size of a population of living things in response to the density of the population (the number of individuals per unit area).
Is K selection density-dependent?
Whereas density-independent factors limit r-selected species in unpredictable environments, K-selected species are adapted to stable environments and regulated by density-dependent factors. … K-selected individuals often grow slowly to large size, live long, and delay but repeat reproduction of fewer offspring.
Is human activity density dependent?
Density dependent factors can only affect a population when it reaches a certain density. … For example: natural disasters, temperature, sunlight, human activities, physical characteristics and behaviours of organisms affect any and all populations regardless of their densities.
Does density dependent or independent to the temperature?
It would not matter if there are 10 mosquitoes or 10,000; the cold weather would affect them all. This makes it a density-independent factor because population density does not matter. Changes in temperature, such as cold fronts, are density-independent factors.
What is an example of a density dependent interaction?
(a) Equal density dependence between beneficial and harmful interactions (i.e. β = δ; β = 0, 0.5 and −0.5 for grey, red and blue lines, respectively). (b) The effect of density-dependence variation on the stability criterion (β = 0.5; δ = 0.5, 0.4 and 0.6 for grey, red and blue lines, respectively).
What is density factor?
Density Factor is a zoning term for the maximum allowable number of residential units one can develop on a property. … These factors vary in different zoning districts. Density factor is also known as Dwelling Unit Factor or DU.What is the definition of density dependent limiting factors and give an example?
A limiting factor of a population wherein large, dense populations are more strongly affected than small, less crowded ones. Supplement. Examples of this type of factor: food and water supply – large population would require for a higher supply of food and water.
Which of the following is a density independent limiting factor group of answer choices?
Chapter 5 Study Guide Biology Crisp
| Question | Answer |
|---|---|
| what is a density-independent limiting factor? | earthquake |
| what density-dependent factor other than the predator/prey relationship affected the populations of moose and wolves on Isle Royale? | food availability for the moose and disease for the wolf |
Which is the best example of a density independent factor?
Natural Disaster. Natural disaster is a perfect example of a density independent factor. Consider a hurricane, slamming into the coastline. While we often see the devastation of these storms on the news, we rarely consider the impacts of such a storm on wildlife and vegetation in the area.
Which is a density independent factor that can limit population size *?
List three density-dependent factors and three density-independent factors that can limit the growth of a population. Density-dependent factors: competition, predation, parasitism, and disease. Density-independent factors: natural disasters, seasonal cycles, unusual weather, and human activity.What is a limiting factor for Beavers?
The more beavers in an ecosystem, the more dams that will built, and the more effected streams there are. That is why beavers can be known as a density-dependent limiting factor. … That is why it is known as a density-independent limiting factor.What is a limiting factor in beaver population?
The principal threats to beaver populations are habitat destruction and degradation. Human population growth and increasing demands on water resources lead to water storage, diversion, and channelization projects that affect rivers, lakes, and wetlands.
