Vines Swamp Southern Forests

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A new study in the southeastern U.S. suggests that increased vine growth is changing bottomland hardwood forests. Researchers from Ohio State University charting the growth of grapevines, trumpet vines, poison ivy, and Virginia creeper in two South Carolina forests found as much as a 10-fold increase in just two decades. As the vines increase, the density of small trees decreases, probably because most vines use adhesive roots or tendrils to climb trees. The reasons for the shift aren’t yet understood, but rising CO2 levels may be to blame &mdash since other studies suggest that vines such as poison ivy benefit more than trees from higher CO2 levels. . . Think of that itchy future: the Republican rash. JULIA WHITTY

HERE ARE THE FACTS:

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As we wrote over the summer, traffic has been down at Mother Jones and a lot of sites with many people thinking news is less important now that Donald Trump is no longer president. But if you're reading this, you're not one of those people, and we're hoping we can rally support from folks like you who really get why our reporting matters right now. And that's how it's always worked: For 45 years now, a relatively small group of readers (compared to everyone we reach) who pitch in from time to time has allowed Mother Jones to do the type of journalism the moment demands and keep it free for everyone else.

Please pitch in with a donation during our fall fundraising drive if you can. We can't afford to come up short, and there's still a long way to go by November 5.

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