Blanca Bernal and Bill Mitsch, Everglades Wetland Research Park (image) American Society of Agronomy Share Print E-Mail Caption This shows co-authors Blanca Bernal and Bill Mitsch taking soil cores in the Okavango Swamp in Botswana, Africa. Credit Bill Mitsch Usage Restrictions The image may only be used with appropriate caption and credit. The image may only be used to illustrate stories about the research in this news release. Share Print E-Mail 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.