Lake Boreal in Northern Sweden (IMAGE) University of Exeter Caption The report indicates that global warming may increase the amount of methane relative to carbon dioxide emitted globally from aquatic ecosystems, terrestrial wetlands and rice paddies. Credit Dr. Cristian Gudasz Usage Restrictions Credit Dr. Cristian Gudasz 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.