Ingrid Jarvis (IMAGE) University of British Columbia Caption Study author Ingrid Jarvis, a PhD candidate in the department of forest and conservation sciences at UBC. Credit Steph Troughton/UBC Faculty of Forestry Usage Restrictions Credit must be given to the creator. License CC BY 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.