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03-01-2014, 09:22 PM
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Join Date: Aug 2007
Posts: 521
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Pine Beetles
Are they all frozen now?
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03-01-2014, 09:29 PM
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Join Date: Sep 2012
Location: Edmonton
Posts: 6,928
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sustained -30 weather. like a couple weeks thins them out. they have a natural antifreeze.
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03-01-2014, 09:48 PM
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Join Date: Feb 2011
Posts: 2,345
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Extreme cold temperatures also can reduce MPB populations. For winter mortality to be a significant factor, a severe freeze is necessary while the insect is in its most vulnerable stage; i.e., in the fall before the larvae have metabolized glycerols, or in late spring when the insect is molting into the pupal stage. For freezing temperatures to affect a large number of larvae during the middle of winter, temperatures of at least 30 degrees below zero (Fahrenheit) must be sustained for at least five days.
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03-01-2014, 10:05 PM
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Join Date: Jun 2007
Location: GP
Posts: 575
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Quote:
Originally Posted by BackPackHunter
Extreme cold temperatures also can reduce MPB populations. For winter mortality to be a significant factor, a severe freeze is necessary while the insect is in its most vulnerable stage; i.e., in the fall before the larvae have metabolized glycerols, or in late spring when the insect is molting into the pupal stage. For freezing temperatures to affect a large number of larvae during the middle of winter, temperatures of at least 30 degrees below zero (Fahrenheit) must be sustained for at least five days.
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I'll add that windchill doesn't count...
I'm in GP. It was -20C in town and +2C where control work was happening south of town.
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A man who lives by hunting cherishes the land. He cherishes his way of life and appreciates what he gets from the land. Sam Blacksmith, 1973.
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03-01-2014, 10:08 PM
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Banned
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Join Date: Jan 2014
Posts: 350
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BC interior forests are in BIG trouble
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03-02-2014, 01:10 AM
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Join Date: Sep 2012
Location: Edmonton
Posts: 6,928
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Quote:
Originally Posted by Boots270
BC interior forests are in BIG trouble
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lol, they're dead already. have been for the last 10-20 year's. the big issue now is the fresh green growing on the duff and under the deadfall. huge fire potential, as illustrated by the 45k hectares that burnt around Binta lake in 2009 or 2010. there were attempts to burn beetle kill in the past in that district, but dead wood doesn't burn well without addition fuels. 10-15 year's of underbrush is enough fuel.
__________________
Respond, not react. - Saskatchewan proverb
We learn from history that we do not learn from history. - Hegel
Your obligation to fight has not been relieved because the battle is fierce and difficult. Ben Shapiro
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03-02-2014, 07:48 AM
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Join Date: Aug 2013
Location: Redcliff, AB
Posts: 247
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Better than sustained cold is warming to fast and drastic cooling some places in the province have been seeing this winter. I'd expect beetle numbers to drop in those areas.
That would go for all bark beetles, not just MPB.
Once the beetles start to come out of dormancy, it's much harder for that "antifreeze" to kick back in. So when that happens multiple times over the winter, it tends to really decrease populations.
I have a bunch of beetle traps going out in the next 30 days or so, I'll try to remember to post results once they come back. Not specific MPB traps mind you, but exotic bark beetle traps.
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03-02-2014, 10:42 AM
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Join Date: Aug 2007
Posts: 521
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Quote:
Originally Posted by Juggernaut
Better than sustained cold is warming to fast and drastic cooling some places in the province have been seeing this winter. I'd expect beetle numbers to drop in those areas.
That would go for all bark beetles, not just MPB.
Once the beetles start to come out of dormancy, it's much harder for that "antifreeze" to kick back in. So when that happens multiple times over the winter, it tends to really decrease populations.
I have a bunch of beetle traps going out in the next 30 days or so, I'll try to remember to post results once they come back. Not specific MPB traps mind you, but exotic bark beetle traps.
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Please do post your findings. Would be neat to see.
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03-02-2014, 02:10 PM
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Join Date: Oct 2008
Location: Whitecourt AB
Posts: 3,867
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Doubtful. As others have said too little too late. Most of you dont realize how infested we already are. The SRD project of fall and burning these trees is an absolute waste of money and will have zero affect.
Its already too late for any of Alberta. Also realize that a 97% winter mortality rate will simply keep their population static for a season.
Anyone that believes we have any hope at all of stopping MPB is wrong.
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03-02-2014, 02:26 PM
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Join Date: May 2007
Location: Central Alberta
Posts: 21,399
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I thought they supposedly took quite a hit last winter already .
Grizz
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written in 1969
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03-02-2014, 03:07 PM
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Join Date: Jul 2007
Posts: 180
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The pine beetle numbers are so low here in the south that they have basically stopped control work due to a lack of trees to cut and burn. So it is possible to reduce their spread but it takes mother natures help to do so. So all those of you shivering in the north, pray for more to kill off the beetles.
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