More than 5 percent of the species is estimated to have been lost when a climate-fueled storm unleashed torrents of water, mud and debris.

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The catastrophic flooding and landslides resulted from Cyclone Senyar’s heavy rains in November. While precise estimates are difficult because of limited data, researchers had previously found that human-induced climate change caused an increase of 10 percent to 50 percent in the storm’s regional rainfall intensity.

“This will continue to get worse and worse as we continue to burn fossil fuels,” said Friederike Otto, an author on both studies and a professor of climate science at Imperial College London.