from Marin CNPS
Drought and Native Trees By: Drew Zwart, PhD Bartlett Tree Research Labs
Whether it’s referred to as prolonged drought or the effects of climate change, or both, there’s no doubt that Marin County is getting dryer and the native trees are suffering from it. In both tree pathology and entomology, a common general statement is that native trees aren’t susceptible to native disease pathogens or insect pests because they’ve evolved various defense mechanisms. However, when physiological stressors like drought are involved, this generalization starts to fall apart.
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