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Water is everywhere: oxygen signals in tree rings shows climate changes and the water cycle


δ
18O or written as ‘delta-O-18’. Delta-O-18 is a measure of the ratio of the stable isotopes oxygen-18 (
18O) and oxygen-16. It is commonly used as a measure of the temperature of precipitation, as a measure of groundwater and mineral interactions, and as an indicator of processes that show isotopic fractionation. The latter is an important tool to understand geochemical and biological systems. For example, biochemical processes cause changes in ratios of stable carbon isotopes in biomass.
This is what scientists from the Institute of Geography at Friedrich-Alexander University Erlangen in Germany, World Agroforestry (ICRAF), and the Department of Forestry and Environmental Science at Shahjalal University of Science and Technology in Bangladesh used in an experiment with three South Asian tree species. Their findings were published in the journal, ....

Indonesia General , Mahmuda Islam , Institute Of Geography At Friedrich Alexander University Erlangen , Dendrochronology Laboratory , Environmental Science At Shahjalal University Of , Department Of Forestry , Friedrich Alexander University , Friedrich Alexander University Erlangen , Shahjalal University , South Asian , World Agroforestry , Environmental Science , Aster Gebrekirstos , Palmer Drought Severity , Total Environment , இந்தோனேசியா ஜநரல் , மஹ்முதா இஸ்லாம் , சுற்றுச்சூழல் அறிவியல் இல் ஷாஜலால் பல்கலைக்கழகம் ஆஃப் , துறை ஆஃப் வனவியல் , பிரீட்ரிச் அலெக்சாண்டர் பல்கலைக்கழகம் , ஷாஜலால் பல்கலைக்கழகம் , தெற்கு ஆசிய , சுற்றுச்சூழல் அறிவியல் , பாமர் வறட்சி தீவிரம் , மொத்தம் சூழல் ,