>
> >The rate of invasive finds greatly increased as the rate of
> transportation.  So in the era of sailing boats there were few--add in
> airplanes & the rate dramatically increased. add in container ships & air
> transportation &........


Hi Mike!

I grew up in So. Calif. where Eucalypts were common landscape trees.  They
were imported from Australia as seed, and no pests were brought with them,
so they were disease free in California for 150 years.  However, with
increased trade, Calif has gotten roughly one new Eucalypt pest each year
for the past 15 years.

Randy Oliver

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