16 thoughts on “All the trees will die, and then so will you.

  1. Whether the mechanism is stress reduction, pollution reduction, or increased physical activity, somehow trees make a difference. The biophysics is less important than the epidemiology. In 2013 another researcher with the US Forest Service named Geoff Donovan took advantage of the fact that another beetle, the emerald ash borer, killed 100 million trees across 15 states in the US. Using statistical models to rule out the impacts of a whole bunch of other potentially confounding factors—race, education, income—Donovan’s team was able to connect illness with places that had ash borer infestations and concomitant loss in tree cover (which you can see in satellite imagery).

  2. Here in Ohio you just kind of assume every ash tree you see is either dead or soon to be dead at this point.

    1. The streets I grew up on on the South Side of Chicago were lined with majestic elms, which had grown tall and branched upward, creating a cathedral of shade—and many leaves to rake. They were almost all lost to |Dutch elm disease,| but it took a long time. Trees live on a different time scale than we do.

  3. That means that if Southern California doesn't somehow stave off the loss of 11 percent of its tree cover, that loss is going to be deadly over time. “It’d probably be unwise to try and just turn the crank and say, ‘That’s going to be X thousand people,’” Donovan says. But the risk isn’t one of overstatement. Southern California has a much higher population density than the area he studied. “You might anticipate a major public health impact.”</blockqu9ote>

    My avatar weeps FFS.

  4. I was sure I was losing my blue spruce, but it has made something of a comeback of late. It will never replace the branches it already lost, but a lot of them have greened up again. It won't have that perfect conical shape, though. Now if my locusts (and apples) can stage a recovery, too.

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