Introduction to Biodiversity
Invasive species are non-native organisms introduced into a new ecosystem, which can cause harm to the environment, economy, or human health. These species can outcompete and displace native species, alter ecosystems, and potentially cause extinctions. Invasive species can be introduced intentionally, such as for agriculture, or unintentionally, such as through ballast water from ships, or as pets or ornamental plants.
One example of an invasive species is the zebra mussel, a freshwater mollusk native to Eastern Europe that was introduced into the Great Lakes in the 1980s. The zebra mussel has no natural predators in the Great Lakes and has spread rapidly, clogging water intake pipes, damaging boats, and outcompeting native species for food and habitat.
Another example is the Burmese python, a large snake native to Southeast Asia that has become established in the Florida Everglades. Burmese pythons prey on a variety of native species, including alligators, which can have significant impacts on the ecosystem.
Invasive species can be managed through a variety of methods, including physical removal, chemical control, or biological control with the introduction of a natural predator or parasite. However, management can be difficult, expensive, and may have unintended consequences.
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