NEW YORK — Federal wildlife officials called climate change the biggest threat to the survival of the polar bear and warned Monday that without decisive action to combat global warming, the bears would almost certainly disappear from much of the Arctic.

“It cannot be overstated that the single most important action for the recovery of polar bears is to significantly reduce the present levels of global greenhouse gas emissions,’’ the officials wrote in a report released by the Fish and Wildlife Service.

“The sooner global warming and sea-ice loss are stopped, the better the long-term prognosis for the species,’’ they added.

The report, called a conservation management plan, is required under the Endangered Species Act and outlines what must be done for a species to recover and avoid extinction. The polar bear was listed as threatened under the act in 2008.

But the report’s message may face a skeptical audience in a new administration that has expressed doubt about the science of climate change and disputed the dangers it poses.

Donald Trump has signaled his intention to withdraw the United States from the Paris climate agreement and he has shown little interest in making emissions reduction a priority.

New York Times