Dan,

Good stuff on these links; I will check them out. Yes, trees are moving
north, but it's a question of time and speed. They are also
disappearing (and burning) at their southern edges. E.g., blue oaks in
Calif have been devastated.

"Climate velocity" refers to the speed of climate change. With current
climate change probably more than 10x faster than extreme warming events in
the past (e.g. the Paleocene-Eocene Thermal Maximum, or PETM), probably
only fast growing and disbursing trees like willows, poplars, and
cottonwoods can keep pace. You can see this in the Audubon prediction maps
for Yellow Warbler, for example. Oaks, being very slow growing, are a real
problem. However, cities and towns, with no hesitation about planting
"non-natives", may end up playing a role. I summarized some of that here:
Helping forests migrate: Planners race to plant trees adapted to the
future climate
https://thecottonwoodpost.net/2020/10/14/helping-forests-migrate-planners-race-to-plant-trees-adapted-to-the-future-climate/

On Wed, Oct 13, 2021 at 9:43 PM Dan Reiff <dan.owl.reiff at gmail.com> wrote:


> Tweeters,

> Trees do "migrate", but very slowly, likely much slower than the effects

> of climate change on birds, insects and other animals, and vegetation,

> including forests.

>

> Dan Reiff

> MI

>

> https://www.popsci.com/trees-are-migrating-west-to-escape-climate-change/

>

>

> Sent from my iPhone

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>



--
Steve Hampton
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