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In the swampy floodplains of North Carolina’s Black River stand ancient trees with a story to tell. Many of these bald cypress (Taxodium distichum) were well over a millennium old when Columbus discovered the Western Hemisphere. As it turns out, their locale has greatly promoted their longevity: by being relatively inaccessible, the trees have been spared from loggers’ saws. But the inexorable sprawl of humans is threatening to breach their mucky moats and disrupt habitats for these trees, many of which have stood for hundreds of years. Although the population of bald cypress trees in the southeastern United States is a fraction of what it once was, a few thousand acres of cypress-studded wetlands are now protected along the lower reaches of North Carolina’s Black River. Image courtesy of David Stahle. The true value of these small patches of largely undisturbed forest may not lie in their wood, however. It may stem from what scientists can glean about how such ecosystems respond to ongoing and future climate change. A few thousand acres of such cypress-studded wetlands are now protected along the lower reaches of the Black River. But researchers are mobilizing to build a consortium that will locate, map, and raise money to purchase hundreds of additional acres of these majestic old trees. The southeastern United States once boasted an estimated 40 million acres of bald cypress forests. Cypress wood is prized for its strength …

How saving some of the Southeast’s oldest trees might help scientists monitor climate change