image: The boreal forests on the large islands have humus layers about 20-cm thick, which is typical for boreal forests in the region. This image relates to a paper that appeared in the March 29, 2013, issue of Science, published by AAAS. The paper, by Karina Clemmensen at Swedish University of Agricultural Sciences in Uppsala, Sweden, and colleagues was titled, "Roots and Associated Fungi Drive Long-Term Carbon Sequestration in Boreal Forest." view more
Credit: [Image courtesy of Karina Clemmensen]