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First Mammal Goes Extinct Due to Human-Caused Climate Change

The Bramble Cay melomys—a rodent found only on Australia’s Great Barrier Reef—has been declared extinct, according to a new study from researchers at the Queensland’s Department of Environment and Heritage Protection and the University of Queensland.

Alarmingly, this could be the first mammal species wiped out due to human-induced climate change.

The researchers came to the conclusion after failing to find a single specimen of the melomys, also called the mosaic-tailed rat, from its only known habitat.

“A thorough survey effort involving 900 small mammal trap-nights, 60 camera trap-nights and two hours of active daytime searches produced no records of the species, confirming that the only known population of this rodent is now extinct,” the study states.

Sea-level rise and weather events in the Torres Strait region, which lies between Australia and the Melanesian island of New Guinea, was determined as the root cause of the loss. The scientists said that the events destroyed the animals’ sole habitat on Bramble Cay, a small vegetated coral cay in northern Australia. Research showed that Bramble Cay had reduced dramatically in size from approximately 2.2 ha in 2004 to only 0.065 ha, equivalent to a 97 percent loss in the span of 10 years.

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