Changes in soil organic matter quality during long-term bare fallow do not affect microaggregate stability

Autor: Alexander Fechner, Robert Mikutta, Klaus Kaiser, Tobias Bromm, Cordula Vogel, Jeroen Zethof, Michaela Aehnelt, Georg Guggenberger, Stefan Dultz

Organic substances of diverse origins are known to promote the formation of microaggregates in soils. However, their contribution to the resistance of microaggregates against mechanical stress remains unclear. This study tests for possible effects of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbc2b3c00365bcc85d5ce20a78a0d393
https://doi.org/10.5194/egusphere-egu23-15453

Process sequence of soil aggregate formation disentangled through multi-isotope labelling

Autor: Wulf Amelung, Nele Meyer, Andrey Rodionov, Claudia Knief, Michaela Aehnelt, Sara L. Bauke, Biesgen Danh, Stefan Dultz, Georg Guggenberger, Maguy Jaber, Erwin Klumpp, Ingrid Kögel-Knabner, Volker Nischwitz, Steffen A. Schweizer, Bei Wu, Kai Uwe Totsche, Eva Lehndorff

Publikováno v: Geoderma : an international journal of soil science 429 (2023)
Geoderma : an international journal of soil science
Geoderma 429, 116226-(2023). doi:10.1016/j.geoderma.2022.116226

Microaggregates (250 µm) that resisted 60 J mL−1 ultrasonic dispersion. Afterwards, we assessed the C, N, Fe, and Si stable isotope composition in each size fraction. After four weeks we found a rapid build-up of stable macroaggregates comprising

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd80473ad65d7d64a460dc293e0cb2ad
https://www.repo.uni-hannover.de/handle/123456789/13694

The alteration of weathering rates by organic matter governs early pedogenesis and the evolution of initial soil microstructure

Autor: Thomas Ritschel, Kai Totsche, Michaela Aehnelt

Publikováno v: Goldschmidt2022 abstracts.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::177b074764745085180daf8b7020f674
https://doi.org/10.46427/gold2022.11808

Intraformational fluid flow in the Thuringian Syncline (Germany) - Evidence from stable isotope data in vein mineralization of Upper Permian and Mesozoic sediments

Autor: Michaela Aehnelt, Lothar Viereck, S. Fritsch, Nina Kukowski, Harald Strauss, Kai Uwe Totsche, Alexander Malz, M. Abratis, P. Lepetit

Publikováno v: Chemical Geology. 523:133-153

Vein mineralization observed in boreholes, quarries and outcrops of Upper Permian and Mesozoic sediments in the Thuringian Syncline, Germany, was investigated for the first time by petrography, electron microprobe analysis and stable isotope analysis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::192bd1d346ca021bc099ade1348b3891
https://doi.org/10.1016/j.chemgeo.2019.05.001

Subsurface aquifer heterogeneities of Lower Triassic clastic sediments in central Germany

Autor: Dieter Pudlo, Reinhard Gaupp, Michaela Aehnelt, Nina Kukowski, Cindy Kunkel, Kai Uwe Totsche

Publikováno v: Marine and Petroleum Geology

A combined study of facies and diagenesis variations was carried out with the aim to understand small-scale heterogeneities in porosity and permeability of sandstones within a 219 m completely cored Middle Buntsandstein succession from central German

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::093d42c52481341e61c6c237ef17ccbf
https://doi.org/10.1016/j.marpetgeo.2018.06.022