(IMAGE) CNRS Caption Acorn production cycles have a greater impact on wild boar populations than originally thought. Alternating years of high and low production have a positive effect on wild boar population growth. Credit © Philippe MASSIT / French Office for Biodiversity (OFB) 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.