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FISH FARMING AND INVASIVE SPECIES
In the 1970s, the US introduced four carp species to control weeds; decades later, these carp spread as far as Minnesota, threatening native fishFour Chinese carp species were imported to southern fish farms in the 1970s. These fish escaped into the Mississippi River system after flo...- In 2006, Canada launched a mission to save Atlantic salmon. Nearly 20 years later, the fish are returningAtlantic salmon populations declined due to habitat destruction and overfishing. Conservation efforts involving captive breeding and habita...
- In 1837, New Zealand fur promoters released Australian possums to build a new industry; the first attempt failed, so settlers kept trying until the animals invaded the countryNew Zealand settlers introduced Australian possums in 1837 for a fur trade venture. This initial plan failed, but subsequent attempts event...
- In the 1930s, a Florida nurseryman scattered Australian tree seeds from an airplane to dry wetlands; the trees later invaded more than 400,000 acres of Florida wetlandsIn the 1930s, melaleuca trees were introduced to Florida's Everglades. These trees were intended to drain wetlands for development and farm...
- 150 years ago, Britishers brought a South American tree to stop desertification in Thar, now it has become a thorny issue in IndiaVilayati babul, introduced during colonial times, remains a subject of ongoing debate. This invasive tree provided fuelwood and livelihoods...
- In 2016, after 15 years of work, a historic deal turned part of Antarctica into the world's largest marine reserveAn international agreement established the Ross Sea marine protected area. This vast region will receive protection starting December 1, 20...
- In 1962, a conservationist moved to a near-barren Bermuda island without electricity or a phone; 47 years later, its first cahow chick in 300 years fledgedA young conservationist moved to Nonsuch Island in 1962 to restore its lost forest. David Wingate planted over 10,000 native seedlings to r...
- Japan coral protectors race to save reefs from heat 'bomb'Okinawa's coral reefs face severe damage from climate-driven marine heatwaves. Scientists are employing "heatwave simulators" to study cora...
- Human-like sense of social punishment: In 2010, fish shocked scientists by punishing bad behavior at feeding timeMale cleaner fish punish females for eating preferred food. This behavior occurs even when males are not directly harmed. Researchers recre...
- In the 1960s, giant Red King crabs were introduced to the Barents Sea by the Soviets, then everything changedGiant red king crabs: Soviet scientists introduced red king crabs to the Barents Sea for a new seafood resource. These crabs successfully e...
- Texas released 3 million captive-bred eggs to save this endangered amphibian. It may be workingA male Houston toad was sighted in Bastrop County, Texas, after a 50-year absence. This sighting follows the release of millions of captive...
- Australia built an A$187,000 electric fence across wild horse country; inside lies an endangered alpine wetland supporting three threatened animalsAn electric fence protects a rare alpine wetland in Australia's Kosciuszko National Park. This small area is home to three threatened nativ...
- In 1861, an English lord sent three red deer to New Zealand for sport; the animals multiplied until government hunters were killing 50,000 a yearThree deer introduced in 1861 multiplied into a national crisis. New Zealand's government hired men to kill 50,000 deer annually. These cul...
- In 2001, a USDA scientist released beetles to destroy an invasive tree, but they eliminated 94% of an endangered bird's habitat along one riverAn invasive beetle introduced to control tamarisk trees has devastated flycatcher nesting grounds. This beetle, released by the USDA, succe...
- In the 1770s, Captain Cook released pigs and goats in New Zealand to feed future sailors; their feral descendants began destroying native bushCaptain Cook introduced pigs and goats to New Zealand's Ship Cove in 1770 for future sailors. These animals became significant threats to n...
- In 1890, Eugene Schieffelin released European starlings in Central Park; within 69 years, their descendants had reached the PacificEugene Schieffelin released European starlings in Central Park in 1890. These birds spread across the continent within sixty-nine years. St...
- In 1935, an Australian entomologist shipped 102 cane toads from Hawaii to fight crop beetles; 2,400 were released before anyone tested the planAustralian scientists introduced toxic cane toads to control sugar cane pests in 1935. These toads failed to eat the target beetles and spr...
- How Australia’s Brown Tree snakes reached Guam after World War II and left biologists baffled by the invasionBrown tree snakes, an invasive species on Guam, have baffled biologists for years. Their population is believed to have started with only a...
- From a 1937 garden planting to an ecological crisis: One Miconia tree now spreads 8.9 million seeds, endangering Queensland's iconic rainforestsToday, a single mature Miconia tree can produce over 8.9 million seeds in one season. What began as a 1937 garden introduction in tahiti ha...
- In 1942, America completed Friant Dam and diverted most of the San Joaquin River into farms; a salmon run once numbering nearly 50,000 adults collapsedFriant Dam construction in California significantly altered the San Joaquin River's flow. This action disconnected salmon from their spawni...
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