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Re: E-M:/ A dreadful year for acorns?



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Enviro-Mich message from williamtobler@critterswoods.org
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Larry,

Do the individual oak trees, oak species, or oaks in general have the same
fluctuation "schedule"?

What drives the schedule?


> -------------------------------------------------------------------------
> Enviro-Mich message from Gary Stock <gstock@net-link.net>
> -------------------------------------------------------------------------
>
>
> LN:
>
> Yep; I've been aware of fluctuations from year to year.  We have so many
> oaks, of so many species and ages, that the volume has always (20 years)
> been sufficient for me to collect.  This is the first year there have
> been, simply, no acorns.
>
> Not Black, White, Red, Pin, Bur...
>
> GS
>
>
> "Larry D. Noodén" wrote:
>>
>> -------------------------------------------------------------------------
>> Enviro-Mich message from "Larry D. =?iso-8859-1?b?Tm9vZOlu?="
>> <ldnum@umich.edu>
>> -------------------------------------------------------------------------
>>
>> Yes, oaks and many nut-bearing trees produce heavy crops only once
>> every several years.  This keeps the nut-predators down, and then
>> eventually, they flood them with food, so more nuts survive.  The
>> technical name is mast fruiting.  I am surprised that you have not seen
>> it before; maybe there is some modulation by local weather.  In any
>> case, you can be sure they will bear again sometime in the future.
>
> -----------------------------------------------------------------------
> Gary Stock                                        gstock@unblinking.com
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