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Economic costs from invasive species can be separated into direct costs through production loss in agriculture and forestry, and management costs. Estimated damage and control costs of invasive species in the U.S. amount to more than $138 billion annually. [96] Economic losses can occur through loss of recreational and tourism revenues. [118]
Biological control or biocontrol is a method of controlling pests, whether pest animals such as insects and mites, weeds, or pathogens affecting animals or plants by using other organisms. [1] It relies on predation , parasitism , herbivory , or other natural mechanisms, but typically also involves an active human management role.
The term "invasive species" can also refer to feral species or introduced diseases. Some introduced species, such as the dandelion, do not cause significant economic or ecologic damage and are not widely considered as invasive. Economic damages associated with invasive species' effects and control costs are estimated at $120 billion per year. [2]
West coast states are spending millions to protect their inland waterways from invasive crabs. In some places, otters are just eating them. Out-of-control invasive species has met its match: Cute ...
Historically, there have been cases where the extermination of animal species has been politically endorsed because the animals have been considered harmful. In some cases the animals have been hunted because the animals present a danger to human lives, at other times they have been hunted because they are harmful to human interests such as livestock farming.
Biological control: This is a method where organisms are used to control invasive species. One common strategy is to introduce natural enemy species of invasive species in an area, with the aim to establish the enemy which will drive the invasive species' population to a contracted range.
Wildlife management studies, research and lobbying by interest groups help designate times of the year when certain wildlife species can be legally hunted, allowing for surplus animals to be removed. In the United States, hunting season and bag limits are determined by guidelines set by the United States Fish and Wildlife Service for waterfowl ...
In the United States [globalize], some of these species are protected, such as bears, ravens, bats, deer, woodpeckers, and coyotes, and a permit may be required to control some species. [2] Conflicts between people and wildlife arise in certain situations, such as when an animal's population becomes too large for a particular area to support.