[MAIPC] T. radicans

[Susan Gitlin]

Hello, folks.

I know that poison ivy is a noxious weed, but I believed that was because
of harm to human health.  I was not aware that it behaved as an invasive
vine, smothering trees a la English ivy.  That would not make sense to me,
except in rare cases, because in that case our local ecosystems would have
far fewer trees.

However, someone today told me that poison ivy smothers and kills trees.
Has this always been the case, or is it now happening due to increased
carbon dioxide in the air?  If the latter, is climate change converting our
native plants into plants that cause ecological harm?

If you could share your knowledge on this, I'd appreciate it.

Thank you!

--Susan
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