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ECOLOGICAL IMPACT OF INVASIVE SPECIES
Thailand promoted Leucaena trees for fodder and reforestation, but scientists found that the fast-growing species is suppressing the natural regeneration of native forests- Hawaii, in the late 1800s, planted Leucaena trees for fodder and fuelwood, but scientists now say the invasive trees have replaced native habitats that evolved nowhere else on Earth
- New Zealand in the 1850s planted millions of pines for timber, but today scientists are spending millions trying to stop them from overrunning native mountains
- ‘Harmony of the wild’: IAS officer marvels at elephant's chance encounter with deer herd. Just 240 km from Bengaluru, this lush tiger reserve promises an unforgettable wildlife escapeA heartwarming video from Mudumalai Tiger Reserve, shared by IAS officer Supriya Sahu, captured a rare, peaceful encounter between a majest...04 Jul, 2026, 01.29 PM IST
- Australia, in the late 1800s, introduced foxes for a hunting hobby, and scientists are still tracking the damage more than a century laterIntroduced for sport in the 1800s, European red foxes have become a devastating ecological crisis in Australia. These adaptable predators r...04 Jul, 2026, 10.12 AM IST
- South Africa, in the mid-1800s, planted millions of Australian acacias as a dune fix; 180 years later, that decision is costing the country its rivers and ecosystemA 19th-century solution to coastal erosion in South Africa, planting Australian Acacia trees, has become a major environmental crisis. Thes...03 Jul, 2026, 05.04 PM IST
- Britain in the 1920s planted millions of Sitka spruce trees for timber, but scientists now say the country's forests support far fewer birds, plants, and insects than native woodlandsBritain's vast Sitka spruce plantations, while economically vital, host a surprisingly limited number of species compared to native trees. ...02 Jul, 2026, 08.34 PM IST
- Mountain lions left this suburb a century ago; one returned to Stanford's preserve in 2015, and woody plants grew 64-fold in just 11 yearsA Stanford study reveals that even a single visiting mountain lion can dramatically reshape ecosystems in small preserves. Researchers obse...02 Jul, 2026, 04.15 PM IST
- In the 1990s, escaped pet Burmese pythons established themselves in Florida's Everglades; by 2012, road surveys found raccoons down 99.3%, opossums 98.9%, and rabbits effectively goneGiant Burmese pythons, introduced to Florida's Everglades as pets, have caused a dramatic wildlife collapse. Road surveys reveal staggering...01 Jul, 2026, 05.32 PM IST
- Scientists found that childbirth can be harder than humans thought, as many primates have babies much bigger than birth canal; some species even dislocate pelvic bones to get through itA recent study challenges the long-held belief that humans uniquely face difficult childbirth. Researchers found that many primate species,...30 Jun, 2026, 09.27 PM IST
- Against all odds, one of nature’s most colorful little survivors just made an incredible returnA vibrant blue gecko, once threatened by the pet trade and habitat loss, is making a remarkable comeback in Tanzania. Conservation efforts,...29 Jun, 2026, 08.25 PM IST
- Greece has placed a bounty on the head of the world's most toxic pufferfish, paying fishermen €5.33 per kilo to hunt the invasive predatorGreece is incentivizing fishermen with a generous bounty to hunt the dangerous silver-cheeked toadfish, an invasive species from the Indian...29 Jun, 2026, 03.48 PM IST
- Blue crabs were first found in Italy's Adriatic in 1949; 74 years later, they exploded, cut clam output 90%, and pushed 160 km up the Po RiverAmerican blue crabs, famed for their presence in coastal cuisine, are now making an alarming, unprecedented journey deep into Italy's Po Ri...29 Jun, 2026, 03.48 PM IST
- In 1985, the first invasive lionfish was spotted off Florida after aquarium releases; within decades, it had spread across much of the Caribbean and US Atlantic coast, devastating reef fish that had no natural defense against itA single lionfish spotted in Florida in 1985 has spiraled into one of the most alarming marine invasions. These venomous, fast-reproducing ...27 Jun, 2026, 05.01 PM IST
- In the 1940s, the brown tree snake reached Guam hidden in post-WWII cargo and set off a chain reaction that scientists are still measuring today; birds gone, tree seedlings down by up to 92%, and spiders multiplying up to 40-fold on an island that once had neitherAn invasive brown treesnake on Guam has decimated native bird populations, leading to a silent forest. This loss has crippled the island's ...25 Jun, 2026, 08.04 PM IST
- In 1859, English settlers released 24 wild rabbits; in 2024, scientists were shocked to find that the DNA of almost all the rabbits in Australia descended from those 24A seemingly simple request for hunting rabbits in 1859 by Thomas Austin in Australia unleashed a continental plague. While rabbits were int...25 Jun, 2026, 07.48 PM IST
- Aravalli Biodiversity Park helps Delhi retain 3 million litres of rainwater, reduce flooding: StudyDelhi's Aravalli Biodiversity Park is a vital green lung, retaining nearly three million litres of rainwater annually and significantly red...22 Jun, 2026, 04.44 PM IST
- Burmese pythons in Florida are changing Everglades in a surprising way: Study reveals giant snakes are spreading seedsBurmese pythons in Florida's Everglades are now understood to be indirectly spreading plant seeds by consuming birds and mammals that eat f...18 Jun, 2026, 04.25 PM IST
- In 1960, Spain planted an invasive tree thinking it was a great idea, and now it's hammering local birdlife because the ecosystem can't keep upNew research from Spain reveals a stark difference in birdlife between native forests and eucalyptus plantations. While species numbers rem...18 Jun, 2026, 04.03 PM IST
- From pet to pest: A 2026 experiment reveals that releasing goldfish into lakes triggers a full ecosystem regime shift, and no lake type is immuneReleasing pet goldfish into local waters causes extensive ecological damage. These fish grow large, stir up sediment, consume prey, and out...15 Jun, 2026, 04.06 PM IST
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