chuckleheads-R-Us, hey! Do you actually know the impact the pine-beetle has had on western provinces/states? Would you like graphic presentations of that damage... of the geographic range extent of that damage? As scientific projections have the beetle expanding its geographic range, moving into the boreal forest and Canada’s northern and eastern pine forests... will you be just as cavalier and dismissive as you appear to be here in your quoted posts?
I'd be interested why you think the pine beetle epidemic is related to climate change. The pine beetle epidemic has now ended naturally just as it has typically done in the past -- that is from beetles getting weak and vulnerable from overpopulation (just like rabbits and any other species in nature would do). The only other way besides a natural die-off that could kill off the beetles is extreme cold in the Fall such as we experienced in 1985. This sort of extreme cold in the Fall was just as rare before global warming as after, which is why only other Fall on record even close to 1985 in terms of cold occurred way back in 1896.
This graph is 10 years old, but shows the cyclical nature of bug infestations. Today, the pine beetles are much diminished why the spruce budworm is on the rise.
That is true in the general sense. There are a lot more diseases etc. in the tropics than the northern boreal forests for example. The problem is, however, people make wide sweeping claims such that they blame everything under the sun on global warming. If we say that warming of winter and summer has caused the pine beetle epidemic, then we should be able to look at the data, and see how it has progressed.I got it from here...
"Climatic suitability for infestation – Milder winters and warmer summers contribute to both higher recruitment and survival rates of the MPB."
That is true in the general sense. There are a lot more diseases etc. in the tropics than the northern boreal forests for example. The problem is, however, people make wide sweeping claims such that they blame everything under the sun on global warming. If we say that warming of winter and summer has caused the pine beetle epidemic, then we should be able to look at the data, and see how it has progressed.
Let's have a look:
As you can see the average summer+winter temperature has risen since the 1970s, but one has to wonder why the 1950s were unscathed. Perhaps it is because global warming has meant the climate is more stable and less erratic (counter to what some say is happening). Remember that the explosion started before the 1990s, and before the temperature had climbed above what was observed in the 1930s and even 1960s. Others have pointed out that humans have made the problem a lot worst and explosive by first failing to log Tweedsmiur to stop the spread, but more importantly by trucking beetle infested logs all over the province, allowing the beetles to spread a lot quicker.
Either way, the epidemic is now over, and the forests are returning to normal, and temperature had nothing to do with it. If it did, the warmer pine forests would be hit harder than the colder locations, but that's not what happened. Instead, it was the severe drought that started in the West Chilcotin 25 years ago that caused the epidemic. This drought caused stress on the trees, and as the drought spread so did the infestation. Then came 2009, one of the hottest summers on record, but right at the end of summer a massive rain dump took a dent out of the drought. Then in the following couple of years significant rain and snow ended the drought, and thus the beetles could no longer kill the trees they attacked is huge numbers. Once the drought ended the trees started surviving the infestations.
Nope no pine trees in California or Oregon is there ?Jury's out on the pine beetle infestation. This outbreak is the latest of many, going back eons, I'm sure. This appears to be one of the worst in several centuries, and warmer temperatures probably have something to do with that. You need a sustained cold snap, the likes of which BC hasn't seen in about 20 years. Forest practices probably contributed to making this one worse as well--suppressing "natural" wildfires led to abundant mature pine which is goiod eatin' for the beetle.
Hey I never found any old poop up there .Probably? Caribou sh-t and stumps from a far higher treeline exposed in the Pemberton glacial range says it was.
Over a million more square km of ice than the 35 year average. Things are really warming up in the deep south.
more Walter? More? Yet more of your nattering fixation with Antarctic sea-ice extent? It's a shame you can't actually step-up and respond to the pointed posts you continue to ignore... that you can't address the (repeated) challenge/questions put to you, hey!
I picked one station because it has long data records. I have looked at other stations in BC, and they all show the same trends (with the exception of Tatlayoko Lake and Lytton where the temperature has been cooling for 70 years). The jet stream has not become more erratic, but you are right about one thing, and that is a warmer climate means that plants, animals, and pests can spread northward. In other words, global warming is responsible for the spread northward of the beetles, but is likely not responsible for the epidemic in central British Columbia.Well, I certainly that there is the folks out there who blame everything on global warming. And then there is the people who deny there is global wamring. Between the two extremes they manage to muddy up the field nicely for anyone interested in finding out what is actually going on. The link between anthropogenic climate change and the pine beetle infestation is tenuous and complex, but there is evidence to support it, especially in Canada (the signal is much more attenuated in the US west).
Tran JK, Ylioja T, Billings RF, Re´gnie`re J, Ayres MP (2007). Impact of minimum winter temperatures on the population dynamics of Dendroctonus frontalis. Ecol Appl 17: 882–899
Sambaraju KR, Carroll AL, Zhu J, Stahl K, Moore RD, Aukema BH (2012). Climate change could alter the distribution of mountain pine beetle outbreaks in western Canada. Ecography 35:211–223
It appears that the pine beetles are most affected by temperature near the poleward and altitudinal limits of their habitat.
I'd be wary of making global claims based on the results of one, or a small cluster, of sample sets around Kamloops. The jet stream, for example, seems to becoming more erratic. There is some evidence this is linked to reduced sea ice in the Arctic.
So much sea ice in the Antarctic. It's the most recorded since they stated using satellites to measure it.
Instead of arguing a lost cause, he should be more forthcoming with his personal pictures of Machu Picchu....Check out "Frozen Planet on Thin Ice". Decent doc on netflix. Gives another perspective relative to the right wing oil-driven character denigration garbage on CC.
Instead of arguing a lost cause, he should be more forthcoming with his personal pictures of Machu Picchu....
He doesn't even have to be in the picture....nobody wants to see his ugly mug anyway.......