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INVASIVE SPECIES ERADICATION
In 2002, black rats were eradicated from Hawaii's Mokoliʻi islet; after just one shearwater chick survived from 1999 to 2001, 126 fledged in 2002 and 185 in 2003Mokoliʻi was once severely impacted by invasive black rats, which posed major risks to seabird species. In 2002, after dedicated conservati...- Amur honeysuckle arrived in America as an ornamental shrub; it later became a major invasive concern in forests across the northern United StatesIntroduced over a century ago, Amur honeysuckle quickly spread across the United States as an ornamental plant, but its aggressive growth h...
- In the 1940s, a California landowner released about three dozen zoo deer at Point Reyes for hunting; by 2002, the two non-native herds had grown to roughly 1,100 animalsPoint Reyes National Seashore grapples with the ecological fallout from non-native deer species that were introduced in the 1940s. These de...
- Arizona removed invasive bullfrogs and rebuilt native frog habitat; Chiricahua leopard frog breeding sites grew from 7 in 2013 to 19 by 2019Efforts to revive the Chiricahua leopard frog habitat in Southeastern Arizona encountered severe obstacles. The introduction of invasive Am...
- Italy eradicated black rats from Zannone in 2007; nine years later, Scopoli's shearwater nesting pairs had nearly tripled from 27 to 80 on the Mediterranean islandZannone, a volcanic island near Rome, successfully removed black rats that threatened local seabird populations. Conservationists undertook...
- On rat-free D’Arros Island, scientists counted 2,768 wedge-tailed shearwater pairs in 2016, nearly 10 times the 2009 estimateD'Arros Island in Seychelles has witnessed a remarkable revival of wedge-tailed shearwaters after the successful elimination of invasive ra...
- After Klein Curaçao removed goats and feral cats and restored habitat, nesting birds climbed from 140 pairs of one species in 2002 to around 650 across multiple species in 2022 as eight more species began breedingKlein Curaçao experienced a significant increase in seabird populations after removing invasive goats and cats. The island went from a few ...
- After invasive rodents were cleared from Surprise Island in 2005, three monitored seabird populations grew two to tenfold in the years that followedFollowing the eradication of invasive rats in 2005, Surprise Island in New Caledonia witnessed remarkable growth in its seabird populations...
- How did demon shrimp from the Caspian Sea reach England waterway? Conservationists raise 'threat to local species' alarmNon-native, invasive species poses threat to native wildlife in River Kennet tributary, England.
- In the 1700s, a shipwreck brought hundreds of rats to an Alaskan island. 11 years after scientists removed them in 2008, seabirds returned and the ecosystem was recoveredAlaska’s Hawadax Island, formerly called Rat Island, has undergone a striking ecological transformation since invasive rats were eradicated...
- In 2002, crews removed rats from California’s Anacapa Island; 10 years later, rare seabirds were returning and the island’s ecosystem was recoveringAnacapa Island shows significant seabird recovery ten years after rat removal. Ashy storm-petrels now nest there, and Cassin's auklets have...
- Galapagos Islands' unique animal, plants served as basis for Charles Darwin's theory of evolution, in 2026 El Nino threatens to wipe out concentration of species not found elsewhere on EarthCharles Darwin Foundation data shows that aftermath of the 1998 El Nino — one of the most powerful and destructive cycles — only 400 of the...
- In 1905, a Bohemian prince released 5 muskrats into his estate. By 1914, their population had exploded to 2 MillionIntroduced near Prague in 1905, five muskrats quickly proliferated throughout Europe. Utilizing waterways as pathways, these semi-aquatic r...
- In the 1830s, America imported autumn olives from eastern Asia to stop erosion and reclaim mines; now the plant infests much of the United StatesAutumn olive, introduced from Asia, was used for erosion control and land restoration. This shrub's nitrogen-fixing ability and rapid growt...
- 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 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 1966, Marlon Brando bought a remote Pacific atoll after filming ‘Mutiny on the Bounty’; today, its protected beaches are a major nesting site where 15,614 green turtle hatchlings were recorded in one seasonMarlon Brando bought a Polynesian atoll named Tetiaroa after discovering it while filming Mutiny on the Bounty. More than five decades late...
- In 2012, Alaska counted 58 pigeon guillemots on Naked Island as mink threatened nests. 11 years later following restoration, their numbers had jumped nearly 400%, reaching 288 birds in 2023Pigeon guillemot numbers on Alaska's Naked Island Group have significantly increased. This recovery followed a multiyear effort to remove i...
- 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 1981, Britain wanted to eradicate the invasive coypus which escaped from fur farms and grew to roughly 200,000 in population and damaged crops and wetlands; after years of trapping Britain made them disappear from the countryBritain once had roughly 200,000 coypus after the rodents escaped from fur farms and spread across East Anglia, damaging crops and wetlands...
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