This section contains 1,456 words (approx. 4 pages at 400 words per page) |
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Summary
Chapter 25
A tree can get sick if it puts too much energy into growing and therefore neglects its self-defense. They have defensive antibiotic compounds and compounds to ward off insects for a large area around them. When a gap opens up in the canopy, many trees seize the opportunity to make a growth spurt but thereby risk an attack by fungi or insects. In Switzerland, some exceptional trees were found to have been attacked by a fungus that killed their cambium, but the roots continued to pump water into the needles and their neighbors must have supplied them with nutrition. A tree can also be injured when a neighbor falls and breaks its bark, leaving it vulnerable. The tree tries to grow new wood over the opening, but a fungus may simultaneously be trying to get a hold. In the outer layers, the...
(read more from the Chapters 25-30 Summary)
This section contains 1,456 words (approx. 4 pages at 400 words per page) |
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