Matt Ayres, Dartmouth College (IMAGE) Dartmouth College Caption Dartmouth professor Matt Ayres studies the southern pine bark beetle, a forest pest that may be the largest source of disturbance in coniferous forests throughout North America. Credit Eli Burakian Usage Restrictions Must credit Eli Burakian. 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.