This is a fascinating article that is worth a read in spite of its length. We are going to be visiting a couple of the islands later this week. It is good for us to know more about the circumstances of the places we are visiting.
“Three years before Darwin’s arrival, a zoo’s worth of invasive species had become entrenched on Floreana. It is no accident that in the scientific literature, the earliest date for many invasive species is 1832. That’s when General José de Villamil, the first governor of the Galápagos Islands, arrived on Floreana to organize the penal colony. As Cruz—farmer, amateur historian, sometime bus driver and the largest landowner on Floreana—puts it, “He brought everything—goats, donkeys, cows, mules, horses, dogs, pigs, rats, everything.” Similar animal importations occurred on other islands in the Galápagos during the 19th century, with devastating consequences on the local flora and fauna. Villamil brought the mules and donkeys to haul tortoises down from the highlands. At the time of his visit, Darwin reported that a previous ship visiting Floreana had loaded up on 200 tortoises in a single day (other ships reportedly collected as many as 700 apiece, according to Darwin).”
“Humans don’t get a waiver from these waves of invasion, and their impact is increasing, too. In 1984 only 6,000 people total lived on five of the 129 islands and islets; more than 30,000 do today. And tourists? Three decades ago there were 20,000 a year; in 2016 there were 218,000. Just as more people began to come to the Galápagos to marvel at the local biodiversity, that biodiversity became increasingly threatened by the invasive species.”Credit: Mapping Specialists
via Could Genetic Engineering Save the Galápagos? – Scientific American
I wrote a blog in the past about CRISPR, and the ethical questions the use of this technology is going to bring up.