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The spruce bark beetle Ips typographus in a changing climate

effects of weather conditions on the biology of Ips typographus

Öhrn, Petter (2012). The spruce bark beetle Ips typographus in a changing climate. Uppsala: (NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
, Sveriges lantbruksuniversitet. Introductory research essay ; 18

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Outbreaks of the Spruce bark beetle Ips typographus are often triggered by storm and drought and have destroyed millions of cubic meters of wood. It is therefore a pest insect of economic importance in Europe. Breeding underneath the bark of Norway spruce Picea abies, I. typographus brings blue-stain fungi into the wood which strangles the water uptake and lowers the timber quality. I. typographus (Coleoptera; Scolytinae) and other insects are dependent on the temperature for their metabolism and development. In a future warmer climate we may see increased storm frequencies with larger windthrows serving more breeding material for bark beetles. Further, a higher mean temperature allowing earlier onset of flight of spruce bark beetle in spring, and a faster development from egg to adult, will increase the probability of a second swarming period during the summer and production of a 2nd generation. In a warmer climate higher evaporation will lead to water shortage and increased host susceptibility, especially later during the summer. Thus, an extended (2nd) flight period may lead to more damage to spruce forests. Two generations of the spruce bark beetle is the rule in lower altitude areas of central Europe and in a future climate bivoltinistic behavior is predicted to become more common also in higher altitudes and northward in Scandinavia.

Authors/Creators:Öhrn, Petter
Title:The spruce bark beetle Ips typographus in a changing climate
Subtitle:effects of weather conditions on the biology of Ips typographus
Series Name/Journal:Introductory research essay
Year of publishing :March 2012
Page range:1-27
Number of Pages:27
Place of Publication:Uppsala
Publisher:Department of Ecology, Swedish University of Agricultural Sciencies
Publication Type:Report
Version:Accepted version
Full Text Status:Public
Agris subject categories.:K Forestry > K70 Forest injuries and protection
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Bark beetles, temperature, storm
Permanent URL:
ID Code:8619
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: Petter Öhrn
Deposited On:20 Mar 2012 12:42
Metadata Last Modified:02 Dec 2014 10:49

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