Icelandic Birch Forests Threatened by Imported Pests Skip to content
Birch trees in Borgarfjörður, West Iceland
Photo: Golli. Birch trees in Borgarfjörður, West Iceland.

Icelandic Birch Forests Threatened by Imported Pests

Experts at the Icelandic Forest Service say unclear timber import regulations threaten local birch forests. Imported timber, especially timber that contains bark, may carry insects or pests that are not native to Iceland and could harm or kill Icelandic birch trees.

RÚV reports that an Icelandic company recently imported tree trunks from Poland with the bark still attached. The Icelandic Food and Veterinary Authority ordered the wood be destroyed or sent back, but the Food and Agriculture Ministry reversed the ruling after it was appealed by the importer. Experts at the Icelandic Forest Service say tree trunks with bark are more likely to carry invasive species and call for stricter regulations on their import.

“Imports probably pose the biggest risk. We import Christmas trees on a large scale every year and all kinds of growth in soil, which is imported with some residue. And we never know what it may be hiding, despite being certified and what that entails,” says Pétur Halldórsson, the Forestry Service’s director of publicity.

Downy birch (Betula pubescens) is the only tree species that naturally forms forests in Iceland. There are few native pests in Iceland, and experts say that local plants could therefore be particularly vulnerable to the arrival of invasive species. Bark beetles, for example, have done significant damage to forests in mainland Europe in recent years and if imported to Iceland, could hurt local birch forests. The beetles breed between the bark and the wood of various tree species, and their larvae feed on living tissues below the bark of the tree, leading to the death of the tree if enough larvae are present. Their presence can also make trees more susceptible to fungal infestation.

“We have gotten two bad pests on birch in the last few years and these pests have no natural predators as of yet,” stated Pétur. “So things are happening and we don’t want worse things to happen.”

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