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Johanna Joensuu (email), Kari Heliövaara, Eino Savolainen

Risk of bark beetle (Coleoptera, Scolytidae) damage in a spruce forest restoration area in central Finland

Joensuu J., Heliövaara K., Savolainen E. (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

Abstract

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.

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

Author Info
  • Joensuu, Dept. of Forest Ecology, University of Helsinki, Finland E-mail johanna.joensuu@metsanhoitajat.fi (email)
  • 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

Received 29 January 2007 Accepted 27 November 2007 Published 31 December 2008

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Available at https://doi.org/10.14214/sf.254 | Download PDF

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