(IMAGE) Friedrich-Schiller-Universitaet Jena Caption A new study has analysed the biodiversity in forests of the temperate zone of Europe. The scientists found out that -- on average - the biodiversity in the herb layer has not changed in recent decades. Credit Photo: Markus Bernhardt-Roemermann/FSU Jena Usage Restrictions None 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.