United States: Romanticism undone: Invasive species, global warming taking toll on plants at Thoreau’s Walden Pond

Scientific American: Henry David Thoreau famously catalogued the plants around Walden Pond more than 150 years ago, and the information he gathered then is helping to illustrate the effects of invasive species and global warming on the area today. According to a paper published January 26 in the journal PLoS ONE, climate change has given invasive and nonnative species a leg up in the Walden Pond area, and native species are the losers. (A nonnative species is considered invasive if it has the potential to ......

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