18 Matching Annotations
  1. Dec 2018
    1. giant tortoises

      More info on the giant tortoises.

    2. fire ant

      The fire ant also threatens endangered birds.

    3. Fowler’s snouted tree frog

      Charles Darwin Foundation site on the Fowler's snouted tree frog.

    4. invasive blackberry

      Galapagos Conservation Trust site on the invasive blackberry.

    5. Forests of the Scalesia

      More on the adaptive radiation of the Scalesia here.

    6. Flightless cormorants

      Galapagos Conservation Trust site on the flightless cormorant.

    7. fur seals
    8. Sea lions

      Galapagos Conservation Trust site about the Galapagos sea lion.

    9. Galápagos penguins

      World Wildlife Foundation info on the Galapagos penguin.

    10. coral ecosystems in the Galápagos,

      Read about the Reefscape project which studied the corals in 2017 here.

    11. A fish the length of a pencil, the Galápagos damsel, was never seen again.

      Wikipedia lists this fish as "possibly extinct."

    12. El Niño,

      More on precisely how El Nino affects these islands here.

    13. the intersection of three ocean currents

      Details on the currents here.

    1. These trees typically grow in dense stands of the same species and age. They die around the same time, and then a new generation of seedlings grows up in the same place.

      Adaptive radiation of the Scalesia

    1. The iguanas are hugely affected as a result, but quite remarkably the iguana’s body reacts by shrinking in size until food sources increase, as smaller bodies require less energy. There is no other known case in the world in which an adult vertebrate is able to shrink, particularly in which it does so repeatedly. Scientists believe that the iguana actually consumes its bones to stay alive, resulting in a reduced skeleton.

      A strange and wonderful adaptation!

    1. An irregular phenomenon called El Nino occurs once in 5-6 years. The water temperature rises, which raises air temperature and bring plentiful precipitation along the continental coast of South America and the equator. The Galapagos lie right in the middle of El Nino.

      Another influence on Galapagos climate.

    2. The Galapagos Islands are influenced by three ocean currents. The cold South Equatorial Current flows westward into Galapagos waters, which comes from the Peruvian Current (the Humboldt Current) that runs north along the continent of South America and turns west near the equator. The warm Panama Current runs in from north. In addition, the deep sea Cromwell Current runs from the west and is a source of upwelling when it hits the islands to bring nutrients from the bottom up to the surface layer.

      One of the reasons the islands are the way they are today.

  2. Jun 2017
    1. The Galápagos are an archipelago of 20 islands, originally called the Enchanted Islands, and made famous by Charles Darwin, who visited the islands in 1835, later formulating his theory of evolution based on his trip.

      Galapagos--on the bucket list!