Winter storm destruction on Yyteri nature trail boosts biodiversity

A powerful winter storm that struck Finland’s Yyteri nature trail last New Year’s has left extensive tree damage—but conservation experts say the destruction benefits local ecosystems, public broadcaster Yle reports.

The Hannes storm uprooted numerous trees along the popular Herrainpäivät trail in Pori, a protected coastal area. While the city clears fallen timber from the path to ensure safe passage, most storm-felled trees are left to decompose naturally.

Anne Salo, a nature conservation officer for Pori, explained that only trees posing immediate safety risks are removed. “On protected land, we only intervene when necessary for trail users’ safety,” she said. “Otherwise, fallen trees remain as deadwood.”

The decaying wood provides critical habitat for insects, fungi, mosses, and birds, enhancing biodiversity. “Storm damage creates new life,” Salo noted. “While it’s sad to see old spruces fall, the destruction fosters a richer ecosystem.”

The Herrainpäivät trail, a 1-kilometre loop along the coast, was established in 1990 under Finland’s Nature Conservation Act. Plans to make the trail fully accessible are currently under administrative review.