They found that the older soot samples contained vanillic acid, an indicator of burning conifer trees.
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"People are more nervous this week than most, " said Rick Fier, director of equity trading at Conifer Securities.
Tree spotters may be pleased to spot the American larch, a deciduous conifer that isn't found much farther south.
Scientists think the web became trapped in conifer resin after a forest fire and then became fossilised inside the resulting amber.
One pair even nested in an abandoned car in a conifer plantation.
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Mr. DONATO: Even after this huge, high-severity fire and a tough place to grow trees, we're finding lots of natural conifer regeneration, which was very unexpected.
"People got caught off guard a little yesterday, but I'm not sensing panic anywhere, " said Rick Fier, director of equity trading at Conifer Securities.
Populations of Chinese fir, a conifer which was once widespread throughout China and Vietnam, is being threatened by the expansion of intensive agriculture according to the IUCN.
Shared between Chile and Argentina, southern Patagonia is chiefly a land of vast, desolate steppes, though the Chilean section also has areas of conifer and beech forest.
"This morning's economic number didn't help at all, but markets were already lower on the back of Cyprus news, " said Rick Fier, director of equity trading at Conifer Securities.
Nevertheless, Brendan Buckley, one of the observatory's researchers, found that a conifer called Fokienia hodginsii, which can live for more than 1, 000 years, gave him the marker he needed.
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Conifer's Mr. Fier noted that stock futures actually flickered lower after the positive labor data, a sign that traders worry that positive data will increase the likelihood for the Fed to act soon.
That first night on the downs I slept in the dubious shelter of a forestry plantation called War Down, tucked into my little bivouac tent while the rain slipped down the conifer needles.
Neil Stoddart, a forest district manager for the Forestry Commission at Llandovery in Carmarthenshire, said although conifer production was an important part of rural economic development, it could be balanced with environmental gains.
When my daughter Elizabeth asked me what the difference was between a deciduous and conifer tree, because she was having trouble memorizing the answer from the science book, I took her outside to see it for herself.
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