Florida Will Lose 6000 Historic Sites to Sea-Level Rise by 2100, Scientists Warn

If you’ve been delaying your visit to Miami’s Vizcaya Museum, the Ernest Hemingway house in Key West, or the 18th century Cathedral Basilica of St. Augustine, now’s the time to start making your arrangements. The same goes for scientists: If you’re planning, say, a study of the indigenous civilizations that lived in the Everglades thousands of years before Europeans arrived, start digging tomorrow.

Because according to a new study published this week, Florida stands to lose nearly 6,000 archaeological and historic sites by 2100 if seas rise by just one meter. Scientists from the University of Tennessee, Indiana University, Northern Kentucky University, and others warn that just one meter of ocean rise could destroy 19,676 historic sites across the Southeastern United States alone — and since Florida is the region’s flattest, lowest, and most ocean-exposed state, the Sunshine State naturally stands to lose more irreplaceable areas than any other state.

Of the exposed areas within Florida that sit lower than one meter above sea-level, 5,498 are listed as archeological areas. Another 438 are sites listed on the National Register of Historic Places.

“Many more unrecorded archaeological and historic sites will also be lost as large areas of the landscape are flooded,” researchers warn in the study published in the academic journal PLOS One. “The displacement of millions of people due to rising seas will cause additional impacts where these populations resettle. Sea level rise will thus result in the loss of much of the record of human habitation of the coastal margin in the Southeast within the next one to two centuries, and the numbers indicate the magnitude of the impact on the archaeological record globally.”

Frighteningly, many respected scientific bodies have warned the country to brace for even larger ocean surges. The National Oceanic and Atmospheric Association, for example, warned last January that, though improbable, ten to 12 feet of ocean rise could be possible by the end of this century.

In this week’s study, researchers warned that a five-meter ocean-rise would destroy more than 34,000 archaeological sites and historic monuments in the Southeast alone. In Florida, the results would be dire: More than 10,000 total sites sit below the five-meter mark in Florida.

If the nightmare ten-feet scenario occurs, roughly 14,000 total sites will be submerged statewide.

While depressingly little is being done at the state and federal level to stop the ocean from swallowing Florida, the Atlantic’sCityLab earlier this month profiled a team of Miami archeologists working to protect South Florida’s historic sites from oblivion. Reporters followed County Archeologist Jeff Ranson and Sara Ayers-Rigsby, the  Southeast/Southwest regional director of the Florida Public Archeology Network, as the pair hunted for bones of creatures (wolves, mastodons, camels, sabertooth tigers) that date from the Pleistocene era, as well as human fossils left by Tequesta Native Americans roughly 2,000 years ago.

“Some things will be lost forever,” Ayers-Rigsby warned CityLab.

Not only do the researchers at PLOS One agree — they went a step further this week, and also noted that human fixes for climate change might become so drastic they wind up destroying some sites in the process.

“The impact of changing climate on terrestrial and underwater archaeological sites, historic buildings, and cultural landscapes will be massive,” this week’s study warns. “Furthermore, not only are these coastal and near-coastal resources threatened by inundation and erosion, but they will also be threatened by efforts to prevent or delay the loss of coastal land through massive infrastructure projects like sea walls, assuming seas rise slowly enough to permit their construction, or they lie in areas not afforded protection by sea walls. While such activities may slow or even halt the inland advance of coastal waters in some areas, they would also likely cause significant damage and destruction to existing heritage resources.”

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