page_title: Galápagos wildlife
section_title: Invasive species
hierarchical_section_title: Galápagos wildlife / Invasive species
context_page_description: The Galápagos Islands are located off the west coast of South America straddling the equator. The Galápagos are located at the confluence of several currents including the cold Humboldt Current traveling north from South America and the Panama Current traveling south from Central America make the islands cooler and provide the perfect environment for the unique mix of wildlife that inhabits the islands.
  These islands are volcanic in origin and were never attached to any continent. Galapagos Wildlife arrived here in one of three ways: flying, floating or swimming. Where in most environments larger mammals are normally the predators at the top of the food chain, these animals were unable to survive the journey. Thus the giant Galápagos tortoise became the largest land animal on the islands, and due to the lack of natural predators, the wildlife in the Galápagos is known for being extremely tame without instinctual fear.
  The Galápagos Islands are noted as a home to a large number of endemic species. The stark rocky islands made it necessary for many species need to adapt to survive here and by doing so evolving into new endemic species.
context_section_description: An invasive species is an alien organism that is not native to a habitat and introduced to a new area that wreaks havoc on the ecosystem, infrastructure and economy. These species can be introduced via natural events or more commonly, through human interactions like colonization, tourism, and the releasing of exotic pets. There are approximately over 1,300 total invasive species within the Galapagos Islands consisting of over 500 insects, over 750 plants and over 30 vertebrates. Most of the plants were brought for agricultural and aesthetic reasons. The Galapagos Islands are highly susceptible to the introduction of foreign species. The islands are credited with being Ecuador’s most prized feature because they are well-known for their intense biodiversity. Scientists who study the flora and fauna in the Galapagos agree that the increasing amount of invasive species in the region is  “the single greatest threat to the terrestrial ecosystems”. The islands are specifically vulnerable because of their geographic location away from the mainland Ecuador. This distance separates the existing species in the Galapagos from their counterparts on the mainland, therefore when foreign species invade the islands, they can easily proliferate until they are the majority. 
  Feral goats were introduced by humans to the islands for agricultural reasons have had a huge impact on the ecosystem. Feral goats are dangerous to the environment because they eat everything in sight, destroying many habitats. These goats do not have natural predators, thus their population continues to grow which leads to a decrease in other organisms they prey on. The goats have had a huge impact on a specific species on the island, the Galapagos tortoise. The goats would eat all of the food and resources needed by the tortoises, eventually driving the tortoises towards extinction.
  Fixing the problems of the invasive species in the Galapagos is not easy as it is very expensive and takes a long time to rid an island of an invasive species. There are many organizations that dedicate themselves to help keep invasive species out of the Galapagos and help eradicate them as well like the Charles Darwin Foundation who helped create the Galapagos Inspection and Quarantine System (SICGAL) that checks the luggage brought into the Galapagos Islands for animals and plants that could be released onto the island. Another example of a proposed solution is Project Isabela Project Isabela which was proposed to rid the island of the feral goats before they caused any extreme damage to the island and the animals living on it. This proposition was very gruesome due to the large massacre of goats which left large amounts of dead goats on the ground for everyone to see. They left the slaughtered goats on the ground so that the nutrients from the goats would be put back into the ecosystem. Other invasive species that were successfully eradicated were fire ants, rock pigeons, cats and a species of blackberry bush. Scientists have also suggested the release of natural enemies to control population growth amongst the invasive species.
caption: A Galápagos tortoise in an enclosure
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