Johanna Joensuu, Kari Heliövaara, Eino Savolainen. (2008). Risk of bark beetle (Coleoptera, Scolytidae) damage in a spruce forest restoration area in central Finland. Silva Fennica vol. 42 no. 2 article id 254. https://doi.org/10.14214/sf.254

Keywords: biodiversity; dead wood; damage; forest pests; forest restoration

Abstract | View details | Full text in PDF | Author Info

A beetle inventory using window traps was performed to examine the effect of forest restoration by artificial addition of dead wood on the abundance of beetles and to evaluate the risk of bark beetle damage in a forest restoration area. The number of beetle families was slightly increased, but no consistent differences were found in the abundance of families containing saproxylic Coleoptera between the restoration and control plots. The abundance and species number of bark beetles and longhorn beetles were significantly higher on the restoration plots. Ips typographus and Pityogenes chalcographus increased only slightly in abundance. In the regression models produced, the abundance of bark beetles was best explained by the volume of recently dead wood. However, the bark beetle species whose abundance increased most were secondary and the material also suggests an increase in the abundance of bark beetles’ natural enemies. The risk of bark beetle damage in the area is thus considered insignificant.

Joensuu, Dept. of Forest Ecology, University of Helsinki, Finland E-mail: johanna.joensuu@metsanhoitajat.fi
Heliövaara, Dept. of Forest Ecology, University of Helsinki, Finland E-mail: kh@nn.fi
Savolainen, Kuopio Natural History Museum, Kuopio, Finland E-mail: es@nn.fi

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