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Difino
| • | infest the Warrumbungle National Park in New South Wales, Australia]]
The term invasive species refers to a subset of those species defined as introduced species. Invasive species can negatively impact the ecology of organisms and ecosystems, economics, and human health. A species is regarded as invasive if it has been introduced by human action to a location, area, or region where it did not previously occur naturally (i.e., is not native), becomes capable of establishing a breeding population in the new location without further intervention by humans, and spreads widely throughout the new location. Natural range extensions are common in many species, but the rate and magnitude of human-mediated extensions in these species tend to be much larger than natural extensions, and the distances that species can travel to colonize are also often much greater with human agency (Cassey et al. 2005). The majority of introduced species do not cause any apparent ecological harm, even in cases in which they spread widely (e.g., the House Sparrow, Passer domesticus).
Source: [wikipedia: invasive species]
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biodiversity:environment
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Global Invasive Species Programme (GISP) |
| | an international team of biologists, natural resource managers, economists, and policy makers is organizing to prepare a global strategy for addressing the invasive species problems.
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Hawaiian Ecosystems at Risk Project |
| | information about alien species in hawaiian ecosystems.
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Information Management System for Invasive Species |
| | aphis raleigh plant protection center. site has information on noxious weeds, non-indigenous arthropods that have been introduced into north america, and other invasive species regulated by the u.s. animal and plant health inspection service (aphis).
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Introduced Species in the UK |
| | a look at the invasive species that have become established in the british isles over the past three hundred years.
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Invasive and Exotic Species of North America |
| | images and information about insects, weeds, diseases, biological control agents, and other invasive or exotic organisms.
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Invasive Non-Native Species |
| | invasive information from the "eco-pros".
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Invasive Species Program - U.S. Fish and Wildlife |
| | the mission of the u.s. fish and wildlife service is working with others to conserve, protect, and enhance fish and wildlife and their habitats for the continuing benefit of the american people.
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Invasive Species Projects |
| | information on various projects regarding different invasive species.
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Invasivespecies.gov |
| | a comprehensive, online information system that facilitates access to and exchange of invasive species data and resources by researchers, scientists, and concerned citizens. usa only.
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IUCN Invasive Species Specialist Group |
| | the issg aims to reduce threats to natural ecosystems and the native species they contain - by increasing awareness of invasions, and of ways to prevent, control, or eradicate them.
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Sea Grant Nonindigenous Species Site |
| | a national information center that contains a comprehensive collection of research publications and education materials produced by sea grant programs and other research institutions across the country on zebra mussels and other aquatic nuisance species found in the great lakes.
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The Center for Invasive Plant Management |
| | promotes ecologically based management of invasive plants, with a goal of restoring desired plant communities.
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The Institute for Biological Invasions |
| | provides access to a searchable database of literature, links to other important invasive species sites, and monthly exotic species profiles.
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