Photo 2 (IMAGE) Queen Mary University of London Caption The study was conducted at IISD-Experimental Lakes Area, a centre for whole-ecosystem freshwater research in Ontario, Canada. Connected lakes were selected for the study to analyse how environmental DNA accumulates throughout the landscape Credit IISD-ELA 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.