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Point-Counterpoint: Reframing the Concept of Invasives

The persistent negative view of non-native species that has dominated conservation and ecological restoration activities in theUnited Statesin recent decades has its roots in the early 1980s, when a...

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Point-Counterpoint: There’s Nothing Benign about Invasions

Introduced predators catch the public’s eye when they devastate native species. The Burmese python in South Florida, for example, has caused greater than a 90 percent decline in prey species such as...

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Breaking New Ground

Countless Asian lady beetles (Harmonia axyridis) overrun a pine tree in Colorado’s Pike National Forest. Originally from eastern Asia, lady beetles were brought to North America to control aphids....

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Freeing Islands from Rodents

Polynesian rats clog a brown tree snake trap on Cocos Island, Guam. Though the rats were abundant and the snakes were rare on Cocos, both posed a significant threat to island birds. (Credit: Daniel...

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Tackling an Invasion

Jim Creber (left) and Wade Harper of Applied Aquatic Management, Inc., got a surprise while treating Old World climbing fern at a Water Conservation Area in Miami: They found and removed an engorged...

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Some Useful Anthropomorphism

Richard Ruggiero holds Tonique, a six-month-old orphaned chimp. (Photo courtesy of Richard G. Ruggiero) Dare we admit that as trained professionals, scientists, and wildlife biologists, we sometimes...

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A Call to Action

Hoping to prevent the spread of Asian long-horned beetles, Canadian authorities posted a sign in Toronto warning about the risks of transporting firewood. (Credit: GTD Aquitaine/Wikimedia) When crude...

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A Clear and Present Danger

Invasive Old World climbing fern enshrouds cypress trees in Florida as entomologist Robert Pemberton surveys the scene. The weed’s leafy skirts can funnel wildfire flames to the tops of trees that...

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A Bellwether Species

At a forest opening in the Central African Republic, elephants dig with their trunks in the mud to reach rare salts needed in their diet. The action of feet, tusks, and trunks exposes minerals that...

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From Challenge to Hope

Sedated to ease its fear of flying, this black rhino was one of 19 flown from a heavily poached area in South Africa to safer, more remote ground during a World Wildlife Fund project in 2011. Extreme...

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