Vineland's trees

[Ian Livingston]

It is drought that weakens the trees' ability to resist the beetle
infestations.  A pine tree's normal response to beetles when they bore
into the cambium layer is to drown the bugs with sap composed of
sugars derived from photosynthesis, nutrients from water uptake
through the roots and, of course, lots of water.  California has
experienced several protracted droughts over the last three decades.
And yeah, that does sound like a climatological problem doesn't it?
(FYI: I am a formerly certified arborist who has made a life study of
trees and forest systems.  Not that I know it all, but I have some
background on which to offer this insight.)
-i

On Fri, Jan 23, 2009 at 3:16 AM, Mark Kohut <markekohut at yahoo.com> wrote:
> West's trees dying faster as temperatures rise
> Los Angeles Times - 1 hour ago
> A tree cutter climbs a pine infested with bark beetles northwest of Lake Arrowhead. Such infestations have been linked to climate change in previous studies.
> Environment Blamed in Western Tree Deaths New York Times
> Study: Global warming responsible for western tree deaths TopNews United States
> Reuters - Seattle Times - Corvallis Gazette Times - BBC News
> all 179 news articles »
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