This research examined different species of Trichoderma fungi found in decaying wood from mountain forests in Central Europe and their ability to break down plant material. The study reveals how these fungi contribute to natural wood decomposition processes in forest ecosystems. Impacts on everyday life: • Helps understand natural wood decay processes in forests • Identifies fungi that could be used in industrial enzyme production • Contributes to forest management and conservation strategies • Provides insights for developing eco-friendly wood degradation processes • Advances our knowledge of biodiversity in mountain forest ecosystems