Mykorrhizasvampar i sandtallskogar : Långsiktiga effekter av skogsbruk på fruktkroppsbildning av ovanliga mykorrhizasvampar

Sammanfattning

This study investigates the effects of forestry on sporocarp production of red-listed and indicator species of ectomycorrhiza (ECM) fungi in Pinus sylvestris forest stands on sandy soils in Västerbotten County, Sweden. A field study on sporocarp production of 15 species was conducted in 10 forest stands in August-September 2024. The forests were categorized into three age classes: old growth forests, 65-year-old forests and 50-year-old forests. Species richness and sporocarp production of red-listed ECM fungi was compared between different aged stands. The difference in sporocarp frequency of four species: Hydnellum ferrugineum, Hydnellum peckii, Hydnellum caeruleum and Hydnellum aurantiacum between the different aged forests stand was also compared. The study showed a significantly lower species richness and sporocarp production in the 50-year-old forests and the 65-year-old forests compared to old growth forests. The study also showed a significantly lower frequency of Hydnellum ferrugineum in young forests compared to old growth forests. The study showed that Hydnellum caeruleum and Hydnellum aurantiacum had a significantly lower sporocarp frequency in 50-year-old forests compared to the old growth forests, but no difference in abundance could be seen between the 65-year-old forests and old growth forests. The dataset for Hydnellum peckii was too small to draw any conclusions about the species’ preference.