Brown Rot at Work in the Forest (IMAGE) DOE/Joint Genome Institute Caption The forest floor of an old-growth pine forest in the Grand Tetons National Park, Wyoming, USA. A dead tree is decayed by brown rot fungi, forming a reddish-brown background against which a marmot is camouflaged. Credit Sarah Watkinson, University of Oxford Usage Restrictions Caption can be paraphrased, but make sure to credit image as noted License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.