Permafrost thawing (IMAGE) University of Eastern Finland Caption Thawing of ice-rich permafrost affects the landscape dramatically and causes long-term effects on tundra vegetation. Credit Mariana Verdonen Usage Restrictions Please mention the credit. 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.