naturalfeature:galapagos islands

  • Scientists identify vast underground ecosystem containing billions of micro-organisms
    https://www.theguardian.com/science/2018/dec/10/tread-softly-because-you-tread-on-23bn-tonnes-of-micro-organisms

    Global team of scientists find ecosystem below earth that is twice the size of world’s oceans

    The Earth is far more alive than previously thought, according to “deep life” studies that reveal a rich ecosystem beneath our feet that is almost twice the size of all the world’s oceans.

    Despite extreme heat, no light, minuscule nutrition and intense pressure, scientists estimate this subterranean biosphere is teeming with between 15bn and 23bn tonnes of micro-organisms, hundreds of times the combined weight of every human on the planet.

    Researchers at the Deep Carbon Observatory say the diversity of underworld species bears comparison to the Amazon or the Galápagos Islands, but unlike those places the environment is still largely pristine because people have yet to probe most of the subsurface.

    One organism found 2.5km below the surface has been buried for millions of years and may not rely at all on energy from the sun. Instead, the methanogen has found a way to create methane in this low energy environment, which it may not use to reproduce or divide, but to replace or repair broken parts.

    Lloyd said: “The strangest thing for me is that some organisms can exist for millennia. They are metabolically active but in stasis, with less energy than we thought possible of supporting life.”

  • Darwin’s Finches Are At It Again - Facts So Romantic
    http://nautil.us/blog/darwins-finches-are-at-it-again

    Darwin’s finches are in trouble. Climate change and globalization have drastically affected their habitats on the Galapagos Islands. In the 1960s, we introduced, most likely through a banana import from Brazil, the fly parasite Philornis downsi. The fly’s larvae infest the finches’ nests, where they enter the nostril cavities of the chicks, first eating the tissue, and later sucking the blood. The result is a horizontal tunnel in the upper beak that you can see straight through.Photos by Jody O’Connor and Katharina J. Peter | Source The number of larvae infesting finch nests has increased by 46 percent from 2000 to 2013 (from about 29 larvae per nest to 51), and according to a recent study, they now kill over half of Darwin’s finches before they even leave the nest. In an attempt to save (...)

  • Biologists Work to Protect a Cathedral of Biology - Facts So Romantic
    http://nautil.us/blog/biologists-work-to-protect-a-cathedral-of-biology

    The isolated Galapagos Islands are a ecological treasure and a key setting in the history of science: Charles Darwin did research there that helped him come to understand biological evolution—though, as detailed in a new Nautilus story by Henry Nicholls, it was observations of plants, rather than the better-known finches, that were most enlightening. One hundred eighty years after Darwin’s visit to that unblemished wilderness, the Galapagos is facing an environmental threat: Birds on the islands have been infected by malaria. The disease drove many native birds to extinction in Hawaii, and biologists are investigating whether the same could happen in the Galapagos. In the radio piece embedded below, St. Louis public radio reporter Véronique LaCapra journeys to the exotic islands to talk (...)

  • Ecuador drops 20 tons of poison on Galapagos Islands to wipe out rats and save unique native species that inspired Darwin « MasterAdrian’s Weblog
    http://masteradrian.com/2012/11/18/ecuador-drops-20-tons-of-poison-on-galapagos-islands-to-wipe-out-rats-

    Ecuador drops 20 tons of poison on Galapagos Islands to wipe out rats and save unique native species that inspired Darwin
    November 18, 2012
    Ecuador drops 20 tons of poison on Galapagos Islands to wipe out rats and save unique native species that inspired Darwin

    By Niamh O’doherty

    PUBLISHED: 10:43 EST, 15 November 2012 | UPDATED: 12:03 EST, 15 November 2012

    Ecuador is dropping more than 20 tons of rat poison on the Galapagos Islands in a bid to kill millions of rodents which, the government claims, are threatening the bird and reptile species that make the islands unique.

    A helicopter will begin dropping nearly 22 tons of specially designed poison bait today, as the government tries to wipe out the non-native rodents by 2020.

    The Pacific archipelago helped inspire Charles Darwin’s theory of evolution.
    The invasive Norway and black rats were introduced to the Galapagos by whalers and buccaneers who began visiting the islands in the 17th century
    The invasive Norway and black rats, left, were introduced to the Galapagos Islands, right, by whalers and buccaneers who began visiting the islands in the 17th century

    The invasive Norway and black rats, left, were introduced to the Galapagos Islands, right, by whalers and buccaneers who began visiting the islands in the 17th century
    A helicopter will begin dropping nearly 22 tons of specially designed poison bait on the islands today, as part of a campaign to clear out non-native rodents by 2020A helicopter will begin dropping nearly 22 tons of specially designed poison bait on the islands today, as part of a campaign to clear out non-native rodents by 2020

    The invasive Norway and black rats were introduced by whalers and buccaneers who began visiting the islands in the 17th century.The rodents feed on the eggs and hatchlings of the islands’ native species, which include giant tortoises, lava lizards, snakes, hawks and iguanas. Rats also have depleted the number of plants on which native species feed.

    The rats have critically endangered bird species on the 19-island cluster, 600 miles from Ecuador’s coast.’It’s one of the worst problems the Galapagos have. [Rats] reproduce every three months and eat everything,’ said Juan Carlos Gonzalez, a Nature Conservancy specialist.
    The archipelago inspired Charles Darwin’s theory of evolution, and the islands are home to many unique species, like these Galapagos sea lionsThe archipelago inspired Charles Darwin’s theory of evolution, and the islands are home to many unique species, like these Galapagos sea lions

    The rats have been feeding on the eggs and hatchlings of the native species like giant tortoises, pictured, and lava lizards, snakes, hawks and iguanasThe rats have been feeding on the eggs and hatchlings of the native species like giant tortoises, pictured, and lava lizards, snakes, hawks and iguanas

    The $1.8m project will be funded by conservation groups and the Galapagos National Park Service.

    ‘This is a very expensive but totally necessary war,’ said Mr Gonzalez.
    Charles Darwin visited the islands during his voyage around the world on the HMS Beagle in the 1830sCharles Darwin visited the islands during his voyage around the world on the HMS Beagle in the 1830s

    Charles Darwin visited the island chain during his voyage around the world on the HMS Beagle in the 1830s.

    Darwin studied the archipelago’s native species and noted that there were subtle differences between the varieties of tortoises and mockingbirds on each of the separate islands.

    His findings later inspired him to develop his theory of evolution.

    The Ecuadorian government now plans to save these unique species by killing off all non-native rodents, beginning with the Galapagos’ smaller islands, without endangering other wildlife.

    The islands where humans reside, Isabela and Santa Cruz, will come last.

    Hawks and iguanas on some islands have already been captured and temporarily moved to prevent them eating the poisoned rodents.

    The director of conservation for the Galapagos National Park Service, Danny Rueda, said the poison had been specially engineered with a strong anti-coagulant to make the rats dry up and disintegrate in less than eight days, without a stench.

    Previous efforts to eradicate invasive species mean goats, cats, burros and pigs have all been removed from various islands.
    The government’s goal is to kill off all non-native rodents, beginning on the Galapagos’ smaller islands, without endangering other wildlifeThe government’s goal is to kill off all non-native rodents, beginning on the Galapagos’ smaller islands, without endangering other wildlife

    The director of conservation for the Galapagos National Park Service, Danny Rueda, said the poison had been specially engineered with a strong anti-coagulant to make the rats dry up and disintegrate in less than eight days without a stenchThe director of conservation for the Galapagos National Park Service, Danny Rueda, said the poison had been specially engineered with a strong anti-coagulant to make the rats dry up and disintegrate in less than eight days without a stench

    The $1.8m project will be funded by conservation groups and the Galapagos National Park Service. Here, park staff are shown testing equipment that will hold the poisonous bait The $1.8m project will be funded by conservation groups and the Galapagos National Park Service. Here, park staff are shown testing equipment that will hold the poisonous bait