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Why did the population of deer decline drastically in 1925 even though their predators were eliminated?
Wiki User
∙ 10y ago
When a predator species is eliminated from an ecosystem one of the natural consequences is an increase in the number of the target prey species. Over population results in over grazing/browsing (in the case of deer), stress and ultimately sickness and starvation.
Once the habitat has been over grazed, the number of animals it will support will generally be less than the number it could support before the initial damage caused by over grazing/browsing.
Without predation, the natural controls are starvation and disease caused by over population.
Population decreases could be further exacerbated by drought or other naturally occurring phenomena.
Wiki User
∙ 10y ago
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What happened if number of predators increase too much?
The amount of prey will decline drastically. The predators would have no more food and would have to find a new prey or starve.
What would cause competition between predators?
Decline of prey, decline of space, foreign predators that hunt both predators and prey
What would most likely happen to these predators if a plague killed all of the American toads in the region?
population would decline
Why did African Americans voting in the south decline drastically by the late 1800?
by the end of the 1800's the laws and the constant threat of violence caused African American voting to decline drastically.
Why did african american voting in the south decline drastically by the late 1800s?
by the end of the 1800's the laws and the constant threat of violence caused African American voting to decline drastically.
Why does wolf population on isle royale decline following a decline in the moose population?
The decline of moose population followed sooner or later by a decline in the wolves population because the is less for the wolves.
When did the whale shark numbers drastically decline?
people thought as if they were a threat to all humans so they go after them and kill them which makes the population decrease. So it mainly started to decrease around 2008.
Sentence for decline?
There was a decline in the population as a result of the war.
What does the wolf population on isle royals decline following a decline in the moose population?
In the Great Lakes area, moose are often a large part of the diet of wolves. Therefore a decline in the wolf population would naturally follow the decline of the moose population on Isle Royale.
Why was there a decline in wild turkey population?
Unregulated hunting and several years of low poult survival rate dropped turkey numbers drastically. Today, the turkey has rebounded nicely, and once again is an extremely common bird.
What is causing the narwhal population to decline?
The main causes for population decline are predation, pollution, maritime transportation, and climate change. The main narwhal predators are hunters, killer whales [Orcinus orca], and polar bears [Ursus maritimus]. The pollution of the air and of the waters is worldwide in its scale and its impact. Maritime transportation contributes to that pollution, and also may affect narwhal migration routes. Climate change affects the life cycle of the narwhal and of narwhal predators and prey. The narwhal population has specific habitat and dietary needs. Any impact on either impacts the narwhal population.
What can cause a population to decline?
disease.
