By John Cannon Large trees in older forests that hold significant amounts of carbon located within U.S. national forests are vulnerable to logging, according to a new study published Jan. 6 in the journal Frontiers in Forests and Global Change. Forest protection efforts often single out old-growth forests because of the carbon they keep out of the atmosphere, along with the complex ecosystems they anchor — and rightly so, Dominick DellaSala, a study co-author, told Mongabay. “You’re walking through these magnificent forests with these giant trees that are hundreds, if not thousands, of years o…