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These Bizarre Blue Tree Rings Are Unveiling Details About Cold Summers From A Century AgoIn order to grow properly, trees need an adequate period of warmth during their growing seasons; otherwise, the cell walls [… ...
Buchwal's team analyzed samples from 25 Scots pine trees and 54 juniper shrubs, staining and photographing their growth rings under a microscope. The study revealed that blue rings were more ...
Scientists studying pine trees and juniper shrubs in northern Scandinavia are revealing the weather of the past by looking at tree rings — which can tell us far more than just the trees’ age. ‘Blue’ ...
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Curious blue rings in trees and shrubs reveal cold summers of the past—potentially caused by volcanic eruptionsOverall, only 2.1% of the pine trees' rings and 1.3% of the juniper shrubs' rings were blue; the cells which hadn't lignified properly were mainly found at the end of growth rings, in latewood.
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