A recent study conducted by the University of Trier has revealed a complex picture of biodiversity trends within Germany. While local biodiversity appears stable, a decline has been observed on a broader, regional scale. The findings, presented Tuesday, are based on an analysis of environmental samples spanning the past 40 years.
Researchers, led by Henrik Krehenwinkel, examined data from the German Federal Environment Agency’s national environmental sample bank. Rather than focusing on pollutant levels, the team analyzed environmental DNA to identify the species present. Samples were collected from two species of mussel, three tree species and a brown algae, providing a comprehensive record of their presence over time.
This extensive dataset allowed researchers to reconstruct the composition of ecosystems across four decades. The study indicates that many native species have been displaced by new arrivals exhibiting greater resilience and adaptation to changing environmental conditions.
Krehenwinkel emphasized that future research efforts should prioritize understanding the ecological roles of these newly observed species and their impact on existing food webs and ecosystem functions. The comprehensive data series offers a valuable tool for monitoring and understanding ongoing shifts in Germany’s biodiversity.
