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INVASIVE SPECIES MANAGEMENT
In 2014, Great Smoky Mountains National Park funded Ravensford wetland restoration. 10 years later, volunteers had planted 500 native seedlings and removed 157,000 invasivesA decade of restoration work has helped transform the 10-acre Ravensford wetland in Great Smoky Mountains National Park. After invasive pla...
In 2015, California EPMT discovered Japanese knotweed along Lagunitas Creek. 2 years later, treatment cut knotweed by 93% on National Park Service land, a major gain nowJapanese knotweed can spread quietly along waterways, making an early discovery especially valuable. In 2015, California’s Early Detection ...
In 2009, Great Lakes IPMT helped restore 1 invaded panne at Indiana Dunes. 17 years later, native flowers now bloom in the wetland where invasive plants once formed a dense monocultureIndiana Dunes National Park faced a challenge as invasive plants colonized its delicate panne ecosystem. A dedicated partnership was formed...
In 2008, Colorado's Curecanti National Recreation Area started screening watercraft for invasive mussels at Blue Mesa. 10 years later, the reservoir remained completely mussel-freeIn 2008, Colorado’s Curecanti National Recreation Area began screening boats and watercraft for invasive mussels at Blue Mesa Reservoir. Th...
In 1950, Australia released the Myxoma virus as biological warfare against its invasive rabbit population. The virus killed 99.8% of infected rabbits within two yearsAustralia grappled with a catastrophic rabbit overpopulation that put its ecosystem and economy at risk. To combat this, scientists unleash...
In 2014, Arizona used fish poison to clear an invasive fish from Virgin River after mechanical removal methods failed. Then the red shiner came backFor years, conservationists waged a relentless battle against the invasive red shiner in the Virgin River. Initial rotenone treatments show...
In 2001, USDA researchers released salvinia weevils in Texas and Louisiana; by 2003, weed cover had fallen near release sites while untreated controls stayed chokedA tiny weevil has proven to be a powerful ally in the battle against giant salvinia, an invasive aquatic weed. Tested in Texas and Louisian...
In 1946, imported beetles were released against toxic St. Johnswort in northern California; by 1957, the weed had fallen to less than 1% of its former abundanceBy the 1940s, European Klamathweed had established itself as a major rangeland threat in California. To combat this invasive species, leaf ...
In 2011, Andalusia mapped 27,022 hectares of Posidonia habitat. 5 years later, 41 low-impact moorings were installed across four sites to protect seagrass from anchoringThe legacy of the LIFE Posidonia project extends beyond the original 2011–2016 funding period. Its work established better information abou...
Invasive tree of heaven is helping spotted lanternflies spread across US by feeding them its toxic sap; here’s why scientists are using it as a trapThe tree of heaven, an invasive species, facilitates the spread of the spotted lanternfly by providing an abundant source of plant sap. To ...
In 1772, Benjamin Franklin sent Chinese tallow seeds to Savannah, Georgia; the government planted more along the Gulf in 1900, and the tree now covers 185,000 hectaresIn the late 1700s, a shipment of 1772 seeds sparked a significant invasion of non-native trees across southern U.S. forests. The federal pl...
In 1970s, silver carp were brought to the US for aquaculture. Now the jumping fish threaten a $20 billion Great Lakes industryInvasive silver carp are rapidly approaching the Great Lakes, raising alarm over potential ecological and economic damage. The recent detec...
Since 1965, Florida has used the alligatorweed flea beetle to control invasive mats; once established, it can cause them to collapse within about 3 monthsA small but mighty insect, the alligatorweed flea beetle, has proven to be an efficient guardian against the spread of invasive alligatorwe...
In 1961, Hawaii introduced black-tailed deer to Kauai for sport hunting; a later survey found them across about half of sampled locationsIn 1961, Columbian black-tailed deer were introduced to Kauai primarily for sport hunting. Over the years, these non-native deer have proli...
In 1985, the first invasive lionfish spotted off Florida after aquarium release; in three decades, they spread from Gulf of Mexico to the southern CaribbeanThe invasive lionfish, first introduced in the 1980s, has quickly proliferated across the Western Atlantic, extending its reach from Florid...
In 1914, USDA researchers imported Australian melaleuca seeds into the United States. 100 years later, the fast-growing tree had conquered 500,000 acres of South Florida after being planted to help dry the EvergladesAustralian melaleuca seeds were imported to the United States in 1914 for agricultural purposes. Later, the Army Corps of Engineers planted...
In 1500s, Spanish explorers introduced pigs into North America. Now areas where they roam free have fewer invasive speciesAlthough wild pigs have long been viewed as destructive invasive species, recent findings reveal they also play a surprising role in curbin...
In 1917, botanist Joseph Rock introduced albizia to Hawai‘i for reforestation. Now it has infested thousands of acres in O‘ahu and eastern Hawai‘i IslandIntroduced to Hawaii in 1917 as a solution for reforestation, the Albizia tree quickly established itself as an invasive species. By 2018, ...
In 1905, Hawaii introduced mosquitofish to fight mosquitoes. More than 100 years later, the fish is threatening native wildlifeAn invasive species, mosquitofish, introduced to Hawaii in 1905 poses a significant threat to the islands' native freshwater ecosystem. The...
How a mosquitofish brought in to kill mosquito larvae became major freshwater ecosystem problemA fish introduced to Hawaii over a century ago now threatens native freshwater wildlife. The mosquitofish, brought to control mosquitoes, n...