Taking a Tree Core from a Balsam Fir (IMAGE) Cary Institute of Ecosystem Studies Caption This is Melissa Enright taking a tree core from a balsam fir on an FIA plot. Credit Gerad Dean Usage Restrictions To be used to promote this press release 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.