Inhaltsbereich
Publications
(Co) Author: Helle, G.
| Paper (ISI journals) [24] |
Paper (further journals) [1] |
Chapter in Book [1] |
Conference Paper [15] |
Report [5] |
All [46] |
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(2013 online first): Winter-to-spring temperature dynamics in Turkey derived from tree rings since AD 1125. Climate Dynamics.
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(2013): Potential to explain climate from tree rings in the south of the Iberian Peninsula. Climate Research, 55, 2, 121-136.
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(2013): Applying CLSM to increment core surfaces for histometric analyses: A novel advance in quantitative wood anatomy. Dendrochronologia, 31, 2, 140-145.
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(2012): Oxygen isotopes in tree rings are a good proxy for Amazon precipitation and El Niño-Southern Oscillation variability. Proceedings of the National Academy of Sciences of the United States of America (PNAS), 109, 42, 16957-16962.
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(2012): Estimating 750 years of temperature variations and uncertainties in the Pyrenees by tree-ring reconstructions and climate simulations. Climate of the Past, 8, 3, 919-933.
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(2012): Age effects and climate response in trees: a multi-proxy tree-ring test in old-growth life stages. European Journal of Forest Research, 131, 4, 933-944.
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(2011): Long tree-ring chronologies reveal 20th century increases in water-use efficiency but no enhancement of tree growth at five Iberian pine forests. Global Change Biology, 17, 6, 2095-2112.
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(2011): Pooled versus separate measurements of tree-ring stable isotopes. Science of the Total Environment, 409, 11, 2244-2251.
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(2011): Late Holocene Asian summer monsoon variability reflected by δ18O in tree‐rings from Tibetan junipers. Geophysical Research Letters, 38, L03701.
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(2011): Identification of anatomically non-distinct annual rings in tropical trees using stable isotopes. Trees - Structure and Function, 25, 1, 83-93.
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(2011): A novel device for batch-wise isolation of α-cellulose from small-amount wholewood samples. Dendrochronologia, 29, 2, 115-117.
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(2011): A network of terrestrial environmental observatories in Germany. Vadose Zone Journal, 10, 3, 955-973.
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(2010): Stable carbon isotope time series from tropical tree rings indicate a precipitation signal. Tree-Ring Research, 66, 1, 35-49.
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(2010): Twentieth-century summer temperature variability in the southern Altai Mountains: A carbon and oxygen isotope study of tree-rings. Holocene, 20, 7, 1149-1156.
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(2010): Response of climate-growth relationships and water use efficiency to thinning in a Pinus nigra afforestation. Forest Ecology and Management, 259, 5, 967-975.
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(2010): Consequences of larch budmoth outbreaks on the climatic significance of ring width and stable isotopes of larch. Trees - Structure and Function, 24, 3, 399-409.
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(2009): Tracing carbon and oxygen isotope signals from newly assimilated sugars in the leaves to the tree-ring archive. Plant Cell and Environment, 32, 7, 780-795.
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(2009): Interdecadal modulation of the relationship between ENSO, IPO and precipitation: insights from tree rings in Australia. Climate Dynamics, 33, 1, 63-73.
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(2009): A novel approach for the homogenization of cellulose to use micro-amounts for stable isotope analyses. Rapid Communications in Mass Spectrometry, 23, 13, 1934-1940.
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(2009): A forced response to twentieth century climate conditions of two Spanish forests inferred from widths and stable isotopes of tree rings. Climatic Change, 97, 1-2, 229-252.
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(2009): Impact of climate and CO2 on a millennium-long tree-ring carbon isotope record. Geochimica et Cosmochimica Acta, 73, 16, 4635-4647.
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(2008): Climatic significance of tree-ring width and delta C-13 in a Spanish pine forest network. Tellus - B, 60, 5, 771-781.
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(2008): Hydroclimatic variation in Far North Queensland since 1860 inferred from tree rings. Palaeogeography Palaeoclimatology Palaeoecology, 270, 1-2, 116-127.
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(2006): The twentieth century was the wettest period in northern Pakistan over the past millennium. Nature, 440, 1179-1182.
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(2012): TERENO – Eine Monitoring- und Forschungsplattform zur Erfassung langfristiger Auswirkungen des Globalen Wandels auf regionaler Ebene. System Erde, 2, 1, 68-73.
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(2004): Transfer functions for palaeoclimate reconstructions - Applications. - In: Fischer, H.; Kumke, T.; Lohmann, G.; Flöser, G.; Miller, H.; von Storch, H.; Negendank, J. F. W. (Eds.), The Climate in Historical Times : Towards a Synthesis of Holocene Proxy Data and Climate Models, Springer, 245-262.| EDOC: 4892 |
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(2013): A guideline for high throughput cellulose extraction on whole wood thin sections. Program and Abstracts of the Dendrosymposium 2013, TRACE 2013 - Tree Rings in Archaeology, Climatology and Ecology (Viterbo, Italy 2013), 100.| EDOC: 20784 |
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(2013): Evidence for annual growth rings in Akoko (Euphorbia olowaluana) an endemic Hawaiian tree with C4-photosynthetic pathway. Program and Abstracts of the Dendrosymposium 2013, TRACE 2013 - Tree Rings in Archaeology, Climatology and Ecology (Viterbo, Italy 2013), 92.| EDOC: 20782 |
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(2013): On similarities and Distinctions In Climate response of european tree ring widths and Stable Isotopes. Do Oxygen isotopes provide a higher potential for spatial reconstruction approaches?. Program and Abstracts of the Dendrosymposium 2013, TRACE 2013 - Tree Rings in Archaeology, Climatology and Ecology (Viterbo, Italy 2013), 102.| EDOC: 20785 |
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(2013): Preliminary results of stable carbon and oxygen variability of 12,000yr-old Kauri (Agathis australis) from New Zealand. Towards a dendroclimatological reconstruction of the Late Glacial-Early Holocene transition in the Southern Hemisphere. Program and Abstracts of the Dendrosymposium 2013, TRACE 2013 - Tree Rings in Archaeology, Climatology and Ecology (Viterbo, Italy 2013), 73.| EDOC: 20780 |
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(2013): The influence of volcanic eruptions on growth of central European lowland trees in NE-Germany during the last Millennium. Program and Abstracts of the Dendrosymposium 2013, TRACE 2013 - Tree Rings in Archaeology, Climatology and Ecology (Viterbo, Italy 2013), 21.| EDOC: 20777 |
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(2013): The influence of volcanic eruptions on growth of central European lowland trees in NE-Germany during the last Millennium. General Assembly European Geosciences Union (Vienna, Austria 2013).| EDOC: 20430 |
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(2013): Relationship between cell features, tree ring widths and density of Pinus sylvestris L. and temperature at high latitudes in northern Sweden. Program and Abstracts of the Dendrosymposium 2013, TRACE 2013 - Tree Rings in Archaeology, Climatology and Ecology (Viterbo, Italy 2013), 83.| EDOC: 20781 |
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(2013): Multiple tree-ring chronologies (ring width, delta13 C and delta18 O) reveal dry and rainy season signals in Indonesia. General Assembly European Geosciences Union (Vienna, Austria 2013).| EDOC: 20435 |
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(2013): UV-laser microdissection system - A novel approach for the preparation of high-resolution stable isotope records ( delta13 C/ delta18 O) from tree rings. General Assembly European Geosciences Union (Vienna, Austria 2013).| EDOC: 20434 |
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(2013): Pine, beech and oak sensitivity to changing water availability in NEGermany. Program and Abstracts of the Dendrosymposium 2013, TRACE 2013 - Tree Rings in Archaeology, Climatology and Ecology (Viterbo, Italy 2013), 41.| EDOC: 20779 |
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(2013): On the potential of the African baobab, Adansonia digitata, for palaeoclimatic studies. Program and Abstracts of the Dendrosymposium 2013, TRACE 2013 - Tree Rings in Archaeology, Climatology and Ecology (Viterbo, Italy 2013), 98.| EDOC: 20783 |
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(2011): Climate signals in width, density, δ13C and δ18O tree-ring series at two Iberian sites. Proceedings of the Dendrosymposium, April 22nd – 25th, 2010 in Freiburg, Dendrosymposium (Freiburg 2010), 134-142.| EDOC: 17335 |
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(2011): Long-term drought and streamflow variations in Turkey. Proceedings of the Dendrosymposium, April 22nd – 25th, 2010 in Freiburg, Dendrosymposium (Freiburg 2010), 34-41.| EDOC: 17333 |
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(2011): Toward multi-parameter records (ring width, δ13C, δ18O) from tropical tree-rings - A case study on Tectona grandis from Java, Indonesia. Proceedings of the Dendrosymposium, April 22nd – 25th, 2010 in Freiburg, Dendrosymposium (Freiburg 2010), 158-165.| EDOC: 17386 |
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(2011): Influence of volcanic eruptions on tree growth in NE-Germany during the last Millennium. Proceedings of the Dendrosymposium, April 22nd – 25th, 2010 in Freiburg, Dendrosymposium (Freiburg 2010), 48-57.| EDOC: 17334 |
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(2012): Proceedings of the DENDROSYMPOSIUM 2011 : May 11th - 14th, 2011 in Orléans, France. Scientific Technical Report ; 12/03 ; 10th Trace (Tree Rings in Archaeology, Climatology and Ecology) conference, Deutsches GeoForschungsZentrum GFZ, 126.
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(2011): Proceedings of the DENDROSYMPOSIUM 2010 : April 22nd - 25th, 2010 in Freiburg, Germany. Scientific Technical Report ; 11/07 ; 9. TRACE (Tree Rings in Archaeology, Climatology and Ecology) Conference, Deutsches GeoForschungsZentrum GFZ, 192.
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(2010): Proceedings of the DENDROSYMPOSIUM 2009 : April 16th - 19th, 2009 in Otočec, Slovenia. Scientific Technical Report ; 10/05 ; 8. TRACE (Tree Rings in Archaeology, Climatology and Ecology) Conference, Deutsches GeoForschungsZentrum GFZ, 169.
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(2009): Proceedings of the DENDROSYMPOSIUM 2008 : April 27th - 30th, 2008 in Zakopane, Poland. Scientific Technical Report ; 09/03 ; 7. TRACE (Tree Rings in Archaeology, Climatology and Ecology) Conference, Deutsches GeoForschungsZentrum GFZ, 226.
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(2008): Proceedings of the DENDROSYMPOSIUM 2007 : May 3rd - 6th 2007, Riga, Latvia. Scientific Technical Report ; 08/05 ; 6. TRACE (Tree Rings in Archaeology, Climatology and Ecology) Conference, Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum, 200.