Flowchart (IMAGE) University of Gothenburg Caption By analysing isotope ratios and trace elements in the wood, researchers can deduce where the timber was harvested. Credit Jakub Truszkowski Usage Restrictions None License Original 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.