Dendroecology II

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Dendroecology II

• Insect Outbreaks

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Wisteria
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Princess Tree (Paulownia)
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Gall Wasps
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Insect Outbreaks

• dendroentomology The science that uses tree
  rings to date and study the past dynamics of
  insect populations.

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Besides fire suppression, climate change
increases insect outbreaks?
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• Close-up of a cross section of a ponderosa pine
  (Pinus ponderosa) from Oregon, showing periods of
  growth reduction caused by Pandora moths. Note
  the narrow rings that begin around 1631, 1661,
  and 1677.

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Sudden Oak Death
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Sudden Oak Death
Leaf dieback in rhododendron
Bleeding cankers on tan oak
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Sudden Oak Death
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Gypsy Moth
Female
Male
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Gypsy Moth
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Gypsy Moth
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Gypsy Moth