Re: Do fluctuations in the ozone layer leave some trace effect in tree growth patterns?

On Aug 2, 2:29 am, Russell <Russell.Mar...@xxxxxxx> wrote:
On Aug 1, 3:31 pm, seeker <mothman20052...@xxxxxxxxx> wrote:

Anyone know?

William's reply clued me into the word "layer" in your title
which I'd missed. I agree with him that the direct effect of
the stratospheric ozone layer fluctuations on trees is, AFAIK,
negligible, except possibly for effects from increased ultraviolet
exposure from areas of highly O3 depleted air from the Antarctic

The only place where it might possibly be detected is in the Chilean
high altitude cacti which are used to the high levels of UV that are
normally present at that altitude but anecdotally they do seem to be
suffering a bit from increased transmission of UV components normally
blocked by the ozone layer. Also some of the researchers seemed to
suffer from more hard UV at the appropriate times of year.

O3 hole. I have not heard of any of those on trees, but I have
not been paying really close attention to the literature since I
left that research field. There may be some other correlations
as he suggested, but I've not heard of any of those, either.

I don't know offhand of any published research that has studied the
effects of the ozone layer fluctuations on Chilean cacti, but if you
wanted to look for a biological effect that is probably the place to
search. There may be some in the literature already, but I don't know
where and a quick google didn't find anything obvious.

Regards,
Martin Brown

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