Invasive Species

From cane toads to kudzu, invasive species (sometimes called alien species) are those that aren't native to an ecosystem and that cause harm to native species, local economies or humans. Invasive species can be terrestrial species, like the pythons invading Florida's Everglades, marine, like the lionfish invading Caribbean waters, or pathogens. Invasive species can cause harm by out-competing native species, or preying on them. They can sometimes increase fire risks or contribute to erosion. Some invasive species have been introduced accidentally and others, like kudzu, were introduced on purpose and then spread more widely than originally intended. Invasive species are found in every type of habitat and are typically difficult to eradicate. Read more about invasive species around the globe and efforts to stop their spread.
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There's Just One Thing Stopping Killer Shrimp from Wreaking Even More Havoc
killer shrimp, invasive species
March 27th, 2014
Alien species become invasive when their introduction to an ecosystem ends up causing ecological disruption in their new home.
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Asian Carp Spread to Upper Mississippi
An invasive Asian Carp
March 12th, 2014
Invasive, plankton-slurping Asian carp are creeping up the Mississippi River. Ready-to-hatch eggs of the fish were discovered as far north as Lynxville, Wisc.
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Invasive Pests vs. Polar Vortex: Who Will Win?
Emerald ash borer
March 4th, 2014
The sub-freezing temperatures breaking records across the country have one group of observers cheering: biologists, many of whom hope that a polar vortex or two will help slow the northward march of invasive species.
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Australia Should Enlist Dingoes to Control Invasive Species (Op-Ed)
dingoes, invasive species, species controls
March 27th, 2014
Introduced species pose one of the greatest threats to Australia’s fauna and flora, but expensive efforts to control them aren’t working.
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Florida's Python Invaders Rarely Attack People Unprovoked
Burmese python in Everglades
March 12th, 2014
Burmese pythons, famous invaders of the Florida Everglades, can take down animals as large as alligators and deer. But the snakes pose little threat to humans and it's rare that the pythons will attack people without being provoked.
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18.2 Feet! One of Biggest Burmese Pythons Caught in Florida
February 5th, 2014
Florida officials say they've bagged one of the biggest Burmese pythons ever found in the state: an 18.2-foot-long female weighing some 150 pounds. The snakes are an invasive species that are wiping out wildlife in the Everglades.
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Florida Pythons Navigate Home Over Record-Breaking Distance
Burmese python in Everglades
March 19th, 2014
Most snakes have poor navigational capabilities, but the Burmese python can navigate home after being transported more than 20 miles away, using an internal map and compass.
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Crazy Ants! Secret Weapon Lets Invaders Take Over US South
crazy ant and fire ant
February 13th, 2014
All over the southern United States, miniature foes are engaging in fierce battle. Invasive "crazy ants" have been displacing fire ants, and the crazy ants' defensive strategy may be behind their bold takeover.
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