Zobrazeno 1 - 6
of 6
pro vyhledávání: '"I. K. Schäfer"'
Autor:
J. Hepp, C. Mayr, K. Rozanski, I. K. Schäfer, M. Tuthorn, B. Glaser, D. Juchelka, W. Stichler, R. Zech, M. Zech
Publikováno v:
Biogeosciences, Vol 18, Pp 5363-5380 (2021)
The hydrogen isotope composition of leaf-wax-derived biomarkers, e.g., long-chain n-alkanes (δ2Hn-alkane), is widely applied in paleoclimate. However, a direct reconstruction of the isotope composition of source water based on δ2Hn-alkane alone is
Externí odkaz:
https://doaj.org/article/754c2b4c0a674b84a345b2e9065ec282
Autor:
J. Hepp, I. K. Schäfer, V. Lanny, J. Franke, M. Bliedtner, K. Rozanski, B. Glaser, M. Zech, T. I. Eglinton, R. Zech
Publikováno v:
Biogeosciences, Vol 17, Pp 741-756 (2020)
Molecular fossils, like bacterial branched glycerol dialkyl glycerol tetraethers (brGDGTs), and the stable isotopic composition of biomarkers, such as δ2H of leaf wax-derived n-alkanes (δ2Hn-alkane) or δ18O of hemicellulose-derived sugars (δ18Osu
Externí odkaz:
https://doaj.org/article/881c95f498e147c2b026817940bc6c8a
Autor:
J. Hepp, L. Wüthrich, T. Bromm, M. Bliedtner, I. K. Schäfer, B. Glaser, K. Rozanski, F. Sirocko, R. Zech, M. Zech
Publikováno v:
Climate of the Past, Vol 15, Pp 713-733 (2019)
Causes of the Late Glacial to Early Holocene transition phase and particularly the Younger Dryas period, i.e. the major last cold spell in central Europe during the Late Glacial, are considered to be keys for understanding rapid natural climate chang
Externí odkaz:
https://doaj.org/article/29d2c0987af841c080c21d9ecd8db649
Publikováno v:
Biogeosciences, Vol 15, Pp 3927-3936 (2018)
Long-chain n-alkanes originate from leaf waxes of higher terrestrial plants, they are relatively resistant against physical and chemical degradation and are preserved in sediment archives for at least millennial timescales. Since their homologue p
Externí odkaz:
https://doaj.org/article/7950bc1dc58e46368df5dc29a4d6a04b
Autor:
L. Wüthrich, M. Bliedtner, I. K. Schäfer, J. Zech, F. Shajari, D. Gaar, F. Preusser, G. Salazar, S. Szidat, R. Zech
Publikováno v:
Eiszeitalter und Gegenwart, Vol 66, Pp 91-100 (2017)
We present the results of leaf wax analyses (long-chain n-alkanes) from the 6.8 m deep loess sequence of Möhlin, Switzerland, spanning the last ∼ 70 kyr. Leaf waxes are well preserved and occur in sufficient amounts only down to 0.4 m and below
Externí odkaz:
https://doaj.org/article/2adfca2c7b6f4906aa8e094111efbe81
Publikováno v:
SOIL, Vol 2, Iss 4, Pp 551-564 (2016)
Lipid biomarkers are increasingly used to reconstruct past environmental and climate conditions. Leaf-wax-derived long-chain n-alkanes and n-alkanoic acids may have great potential for reconstructing past changes in vegetation, but the factors that a
Externí odkaz:
https://doaj.org/article/fc118be2aa984981b5be8a1f94f583f0