نتایج جستجو برای: tree rings
تعداد نتایج: 217757 فیلتر نتایج به سال:
Abstract Forest management can be improved by the mechanistic understanding that tree-ring stable isotopes provide. Key tools include genetic selection, competing vegetation control, thinning, and fertilization. These frequently change environmental conditions physiological processes, such as photosynthesis, stomatal conductance, water uptake, nitrogen cycling, which may leave isotopic signatur...
Otoliths, also known as ear stones, are small body parts that help fish with hearing and balance. Like tree rings, otoliths form one light dark band per year, creating rings. These rings can be measured to understand growth. The wider the ring, greater In our study, we used how species—lake trout—responds rising temperature in state of Alaska. We found warmer spring air earlier lake ice melt we...
δ(13)C and δ(18)O of tree rings contain time integrated information about the environmental conditions weighted by seasonal growth dynamics and are well established as sources of palaeoclimatic and ecophysiological data. Annually resolved isotope chronologies are frequently produced by pooling dated growth rings from several trees prior to the isotopic analyses. This procedure has the advantage...
Extremely decay-resistant wood and fire-resistant bark allow California's redwoods to accumulate millennia of annual growth rings that can be useful in biological research. Whereas tree rings of Sequoiadendron giganteum (SEGI) helped formalize the study of dendrochronology and the principle of crossdating, those of Sequoia sempervirens (SESE) have proven much more difficult to decipher, greatly...
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