Invasive species
hideInvasive species is a phrase with several definitions. The first definition expresses the phrase in terms of non-indigenous species (e.g. plants or animals) that adversely affect the habitats they invade economically, environmentally or ecologically. It has been used in this sense by government organizations as well as conservation groups such as the IUCN (International Union for Conservation of Nature).
The second definition broadens the boundaries to include both native and non-native species that heavily colonize a particular habitat.
The third definition is an expansion of the first and defines an invasive species as a widespread non-indigenous species. This last definition is arguably too broad as not all non-indigenous species necessarily have an adverse effect on their adopted environment. An example of this broader use would include the claim that the common goldfish (Carassius auratus) is invasive. Although it is common outside its range globally, it almost never appears in harmful densities.
Because of the ambiguity of its definition, the phrase invasive species is often criticized as an imprecise term within the field of ecology. This article concerns the first two definitions; for the third, see introduced species.
For more information about Invasive species, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with invasive species
Invasive Nettle Moth Triggers Hawaii Research
Nov 19, 2009 |
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(PhysOrg.com) -- Like children everywhere, kids in Hawaii love to run barefoot through tall grass. But an invasive pest called the nettle moth caterpillar can take the fun out of this simple childhood pleasure, ...
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Researchers learn why invasive plants are spreading rapidly in forests
21 hours ago |
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(PhysOrg.com) -- Invasive plants are advancing into Eastern forests at an alarming rate, and the rapid spread has been linked by researchers in Penn State's College of Agricultural Sciences to forest road ...
Illinois to poison canal in hopes of killing invasive carp
Dec 02, 2009 |
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The largest fish kill in Illinois history -- expected to net 100 tons of fish including, hopefully, some Asian carp -- is to start Wednesday south of Chicago in an attempt to make sure none of the feared carp make it past ...
Save the seeds: Scientists are relocating plants that may be affected by climate change
Nov 17, 2009 |
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As warmer temperatures threaten to devastate plant species across the globe, scientists are taking the lead by relocating plants to safer grounds, according to a recent New York Times article.
Microorganism may provide key to combating giant salvinia throughout Louisiana
Nov 19, 2009 |
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A team of researchers at Louisiana Tech University has found that a naturally occurring microorganism acts as a natural herbicide against giant salvinia.
Asian carp may have breached barrier protecting Lake Michigan
Nov 24, 2009 |
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Two feared species of Asian carp have zoomed beyond the $9 million electric barriers built to keep them out of Lake Michigan. Now, the only thing left between the carp and the Great Lakes is a lock and dam in southern Chicago.
Europe's flora is becoming impoverished
50 minutes ago |
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With increasing species richness, due to more plant introductions than extinctions, plant communities of many European regions are becoming more homogeneous. The same species are occurring more frequently, ...
Fears mount over giant carp reaching Great Lakes
Dec 02, 2009 |
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(AP) -- Fears that giant, voracious species of carp will get into the Great Lakes and wipe out other fish have led to rising demands that the government close the waterway connecting the lakes to the Mississippi ...
Asian carp raises fear and loathing on Great Lakes
21 hours ago |
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(AP) -- After nearly four decades as a fishing guide on the Great Lakes, Pat Chrysler has seen enough damage from invasive species to fear what giant, ravenous Asian carp could do to the nation's largest bodies of freshwater.
Gravestones Talking through Time
Space & Earth / Earth Sciences
Dec 08, 2009 |
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(PhysOrg.com) -- A visit to your local graveyard can provide not only a history lesson, but a science lesson as well. Historians know that gravestones can reflect the lives of people whose memories are lost ...
Treatment to improve degenerating muscle gains strength
Nov 11, 2009 |
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A study appearing in Science Translational Medicine puts scientists one step closer to clinical trials to test a gene delivery strategy to improve muscle mass and function in patients with certain degenerative muscle disord ...
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