摘要：Bark Beetle Gradation and Bark beetle
Monitoring 2005 in Austria
In 2005, a total of 2.56 million m3 timber was cut due to
bark beetle infestation. This is once again the highest
amount of bark beetle damaged wood ever registered in
Austria. Major damages were reported from Salzburg and
Styria because of the consequences of the storm event in
November 2002. The population of Ips typographus keeps
increasing whereas other important bark beetle species
such as Pityogenes chalcographus or Ips cembrae have
decreased in comparison to 2004.
The flight activity of Ips typographus and Pityogenes
chalcographus, expressed by the capture rate of 185
pheromone traps placed in Burgenland, Carinthia, Styria,
Salzburg, Upper Austria and Lower Austria, is discussed
and underpinned by figures.
The first peak of flight intensity of Ips typographus was at
the beginning of May, the highest capture rate was end of
May/beginning of June, whereas in most areas the peak in
case of Pityogenes chalcographus was not reached before
end of June. In most parts of Austria two generations have
been observed, in the Alps only one generation.
Generally, it can be said, that in Austria the capture rate of
bark beetles in pheromone traps was very high. On average
between 40.000 and 56.000 Ips typographus were captured
per year in one trap system (Theysohn-Fallenstern)
in Burgenland, Styria and Salzburg. The highest amount
of Pityogenes chalcographus beetles was registered in Lower
Austria.
关键词：Bark beetle, bark beetle monitoring, infested
timber, pheromone trap, Austria
