29 October 2014

Back from near-extinction


Jack Linshi has a Time article about (for once) a reversal of extinction:
Giant tortoises endemic to the Galapagos Islands are back from near extinction, according to a study published in PLOS One. The EspaƱola giant tortoises, a species that can live for over a hundred years, had numbered in the thousands, but dropped to only fifteen by 1960 due to human exploitation, the study said. Between 1963 and 1974, conservationists brought the twelve female and three male surviving giant tortoises into captivity. Over fifteen hundred of their offspring have since been released onto the island, and the species’ survival no longer requires human intervention, scientists said.
“The population is secure. It’s a rare example of how biologists and managers can collaborate to recover a species from the brink of extinction,” said James P. Gibbs, the study’s lead author and a professor of at the State University of New York’s Environmental Science and Forestry department, in a press release.
Reintroducing the giant tortoise population not only promotes biodiversity, but also restores their position as “ecosystem engineers” who disperse seeds and other organisms, according to the report. While the population is stable, the number of EspaƱola giant tortoises is not likely to increase substantially until other problems in the environment, such as the overgrowth of woody plants, are resolved.
Rico says that, for once, we didn't lose one...

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