17 results on '"Helle, Gerhard"'
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2. An annual-resolution stable isotope record from Swiss subfossil pine trees growing in the late Glacial
3. A high yield cellulose extraction system for small whole wood samples and dual measurement of carbon and oxygen stable isotopes
4. Inter-annual variation of tree-ring width, δ13C and δ18O in juvenile trees of five plantation poplar cultivars (Populus spp.)
5. Late Holocene relative humidity history on the southeastern Tibetan plateau inferred from a tree-ring δ18O record: Recent decrease and conditions during the last 1500 years
6. Changes in El Niño – Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings
7. Oxygen isotopes in tree rings show good coherence between species and sites in Bolivia
8. Climate sensitivity and parameter coherency in annually resolved δ13C and δ18O from Pinus uncinata tree-ring data in the Spanish Pyrenees
9. Multiple tree-ring chronologies (ring width, δ13C and δ18O) reveal dry and rainy season signals of rainfall in Indonesia
10. Applying CLSM to increment core surfaces for histometric analyses: A novel advance in quantitative wood anatomy
11. Impact of climate and CO 2 on a millennium-long tree-ring carbon isotope record
12. Hydroclimatic variation in Far North Queensland since 1860 inferred from tree rings
13. Climate signals in tree-ring width, density and δ13C from larches in Eastern Siberia (Russia)
14. Variability of latewood-widths and -stable isotope ratios in a sessile oak tree ( Quercus petraea (Matt.) Liebl.)
15. A guideline for sample preparation in modern tree-ring stable isotope research
16. Environmental history of the German Lower Rhine Embayment during the Middle Miocene as reflected by carbon isotopes in brown coal
17. A novel device for batch-wise isolation of α-cellulose from small-amount wholewood samples
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