I'd like to apologise for my somewhat hasty and ungracious initial response to
I regret not having read the report more carefully - thus erroneously assuming
that 'deep prolonged flooding' included complete submersion.
Victorian Wife wrote:
> Hi Vernon,
> I think your tree data below may be a bit skewed. Deep flooding probably
> means that the tree's bottom half was flooded with water but not that the
> ENTIRE tree (the crown) was under water for that period of time. There is a
> big difference in these two things. If a tree was submerged to several feet
> or more above its top, I doubt that it could survive very long at all.
> First, it would not be able to photosynthesize much like you would not be
> able to breath, thus, death. Second, if it was that submerged and taking
> into account probable currents under the water the whole thing would
> probably be uprooted, thus, death.
> I quote the following from your below reported web site:
> "Tree injury increases in proportion to the percent of crown covered by
> water. Species that can survive standing in several feet of water for months
> may die in less than one month when their foliage is completely covered. Few
> species can tolerate more than one month of complete submersion during the
> growing season"
> We should all be careful not to take information out of context for our
> >You may be interested to know the result of my internet search on the
> >topic "trees
> >tolerance to flooding". Here is an extract from Table 1 of
> >http://www.na.fs.fed.us/spfo/pubs/n_resource/flood/toler.htm. It deals with
> >relative tolerance of trees and shrubs to flooding during the growing
> >season, Lower
> >Mississippi Valley and Missouri River Divisions. (source: Whitlow and
> >Harris 1979):
> >Fraximus pennsylvanica (a variety of ash) - very tolerant: able to
> >survive deep,
> >prolonged flooding for more than 1 year.
> >We further read at http:/www.alphazee.com/olive-leaf/olea.html that
> >the olive tree
> >is a member of a plant family that includes the ash...
> >A little simple arithmetic reveals that Noah's second sending out of the
> >occurred some 271 days after the rains began. Clearly, therefore, we
> >have no problem
> >with the olive leaf!
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This archive was generated by hypermail 2b29 : Mon Jul 29 2002 - 21:17:59 EDT