World’s longest lichen declines in a national park
Hydrated thalli of Usnea longissima hanging from spruce branches in Skuleskogen National Park. Credit: Per-Anders Esseen A unique long-term study performed by researchers at Umeå University shows that the pendent lichen Usnea longissima has decreased by 42% over 37 years in Skuleskogen National Park, located in High Coast UNESCO World Heritage site. The study has
Blythe Redner
September 1, 2023