Leafcutter Ants in the Rainforest (VIDEO) University of Maryland Baltimore County This video is under embargo. Please login to access this video. Caption Leafcutter ants are part of a thriving ecosystem in a reforested area of Costa Rica. Active reforestation techniques have been reported as inferior to natural regeneration processes in several high-profile studies. However, a new study critiques previous research, arguing the studies were biased and that active reforestation can also be effective depending on the goals and the site. Credit Matthew Fagan Usage Restrictions with credit to Matthew Fagan 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.