Anonymous
Anonymous asked in Science & MathematicsBiology · 1 decade ago

one example of a non-native species and the effects its introduction had on the affected ecosystem. ?

3 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    Cane toads were introduced into Australia to combat insects, particularly those which infest sugar cane plantations. The introductions generally failed to control the targeted pests, most of which were later controlled by the use of insecticides. Since then, the Cane Toad has become the pest, an invasive species that poses a serious threat to native animals, dramatically reducing Australian biodiversity. Cane toads prefer the ecosystems of open grasslands and open woodland. Their population has exploded within these ecosystems, because they compete so successfully with many other insectivorous species. Cane toads also eat some already-endangered species. Another problem with cane toads is that they are highly toxic, resulting in the death of a large proportion of predatory animals, including pets, living in their vicinity. They also out-compete native frogs for breeding sites, lay more eggs, and produce far more tadpoles.

  • Anonymous
    1 decade ago

    Based on anthropological data, I consider humans to be a native species of Africa which migrated into non-native environments

    When the first humans arrived in Australia, there were many marsupial species that quickly became extinct. This also happened later when the first humans arrived in North America. Many of the large mammals went extinct due to human predation.

    Human agriculture has introduced many non-native species into new environments. There are vastly more wheat plants (first domesticated in Iraq or Turkey) worldwide than there would have been without human intervention. Huge ecosystems have been cleared for cultivation of plants that evolved elsewhere, such as wheat, rice, maize, potatoes, cotton, flax, citrus. These crops displaced the native vegetation, albeit with the help of another biological organism, man.

    That is, much of the introduction of non-native species has been the direct result of human activity, and the consequences to biodiversity have been huge.

    Source(s): I am a biologist.
  • khusbu
    Lv 4
    4 years ago

    a metamorphosis in the abiotic environment eg the components gets too warm/chilly for some organisms in our surroundings to proceed to exist. One species starts to dominate eg a sparkling predator is presented to the ambience and starts killing each and every of the animals on mass. Habitat destruction it fairly is basically fairly a component with human beings recent eg reducing down forests drying out rivers. in view that biodiversity is basically the selection of species something that could reason extinction is a possibility to biodiversity.

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