After issuing what are, in effect, gag orders preventing the United States Department of Agriculture, the Environmental Protection Agency, and their employees from communicating to the public in an official capacity, President Donald Trump’s clampdown on scientific facts that contradict his policies has claimed another victim. The Trump administration has now instructed the E.P.A. to remove a page about climate change from its Web site, Reuters reported Tuesday, confirming the fears of scientists who had spent the past month rushing to archive climate-change data.

On Tuesday, E.P.A. officials notified employees that Trump’s team had told the department’s communications team to take down the climate-change page, which includes “links to the EPA's inventory of greenhouse gas emissions, which contains emissions data from individual industrial facilities as well as the multiagency Climate Change Indicators report, which describes trends related to the causes and effects of climate change,” Reuters reports. Trump transition-team member Myron Ebell told Reuters that while the Web page will be removed, he speculates that “the links and information” will likely remain. E.P.A. staffers are trying to convince Trump to keep parts of the Web site and are rushing to save as much data as they can before the page about climate change disappears—something that could happen as soon as Wednesday. “If the website goes dark, years of work we have done on climate change will disappear,” one staffer said.

It is not unusual for a new president to order changes to agency Web sites, or to temporarily suspend their public communications until they are brought into line with administration policy. But the executive actions taken by Trump in his first days in office have raised alarms for the speed with which he has sought to erase Barack Obama’s environmental legacy and the unusual scope of the changes. Following Trump’s swearing-in ceremony Friday, the White House Web site was quickly updated to completely eliminate the phrase “climate change,” replacing it with Trump’s “America First Energy Plan,” which calls for rolling back regulations including Obama’s Climate Action Plan.

But not all federal employees are taking Trump’s orders, which appear to be intended to discourage dissent and stifle the flow of factual scientific information from federal agencies. On Tuesday, the Twitter account for South Dakota’s Badlands National Park, a subsidiary of the National Park Service, began tweeting out climate-change facts, an apparent act of rebellion against Trump’s gag order. The tweets were swiftly removed.