Low-lying islands are going to drown, so should we even bother trying to save their ecosystems?


Grist

Islands are hot spots of biodiversity, often home to rich and unique ecosystems. Despite covering just 5 percent of the Earth’s land, the planet’s 180,000-odd islands contain a fifth of its plant and animal species. Around half of recorded extinctions have occurred on islands.

Unfortunately, many islands have been infested in recent centuries with ecosystem-wrecking rats and other invasive species. So scientists the world over have clamored to remove the destructive pests and protect the original inhabitants. More than 900 islands have been cleansed of rats and other animal invaders so far, often through the controversial use of poisoned baits.

But a new paper published in Trends in Ecology and Evolution asks an unsettling question: When it comes to low-lying islands that will eventually be swallowed by sea-level rise, why bother?

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