From Ancient Oaks to Forest Pathogens: Conference Excursion Highlights Biodiversity Challenges

The group enjoyed scenic views of pastures and wooden meadows while also witnessing the strong impact of tree diseases such as ash dieback and Dutch elm disease.

‒ Dutch elm disease and ash dieback threaten elm and ash populations along with a large number of associated species that depend on these trees, says Jan Stenlid, prof. emeritus at SLU, who was guiding the group through the nature reserve. He gave examples on management measures on Gotland, aimed at preserving ash and elm and their associated biodiversity.

Highlights included a visit to a wooden meadow with ancient oaks hosting rare wood-decay fungi, presented by Audrius Menkis, and a presentation on the risks posed by Phytophthora species to Sweden’s woody plants by Iryna Matsiakh. Both Iryna and Audrius work as analysts at the SLU Forest Damage Centre.

In a neighbouring pine forest, regeneration of pine trees was discussed. PhD student Freja De Prins and supervisor Åke Olson introduced the group to Scots Pine blister rust (Cronartium pini), explaining its complex life cycle and talked about ongoing research. The visit sparked active discussion and keen engagement among participants.