Výsledky vyhledávání - "Merle Gierga"

Terrestrial carbon dynamics through time - insights from downcore radiocarbon dating

Autor: Rienk Smittenberg, Valier Galy, Stefano Bernasconi, Merle Gierga, Axel Birkholz, Irena Hajdas, Lukas Wacker, Negar Haghipour, Camilo Ponton, Timothy Eglinton

Publikováno v: EGUsphere

A relatively small change in the balance of in- and outgoing fluxes between terrestrial Carbon (Cterr) and the atmosphere, sustained over centuries to millennia can change Cterr from a carbon source to a sink. The net carbon balance of any ecosystem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89e03a9d4fa085cfccd68af4ee6e4861

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Current Sample Preparation and Analytical Capabilities of the Radiocarbon Laboratory at CologneAMS

Autor: Alexander Stolz, Philipp Wischhöfer, A. Dewald, Jan Olaf Melchert, Stefan Heinze, Anja Wotte, Sonja Berg, Janet Rethemeyer, Merle Gierga

Publikováno v: Radiocarbon. 61:1449-1460

This work summarizes the methodical capabilities, improvements, and new developments in the radiocarbon laboratory of the accelerator mass spectrometry (AMS) facility at the University of Cologne, Germany, which was established in 2010. During the pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4690b158f440f1e342494fe2f44e06a7
https://doi.org/10.1017/rdc.2019.16

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Compound-specific radiocarbon ages of soil and sedimentary leaf wax biomarkers in an arid high-altitude environment

Autor: Bernhard Aichner, Merle Gierga, Małgorzata Suska-Malawska, Monika Mętrak, Janet Rethemeyer, Nasimjon Rajabov, Steffen Mischke, Ilhomjon Rajabov, Alexander Stolz, Mateusz Wilk, Dirk Sachse

Compound-specific radiocarbon analysis (CSRA) of leaf waxes has revealed significant lag times before compounds are deposited in marine and lacustrine sediments. No such data so far exist for a cold and arid high altitude lake system, where carbon tu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::80c72abae6c3c55c5abdca042cbd8ff0
https://doi.org/10.5194/egusphere-egu21-3392

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DO RADIOCARBON AGES OF PLANT WAX BIOMARKERS AGREE WITH14C-TOC/OSL-BASED AGE MODELS IN AN ARID HIGH-ALTITUDE LAKE SYSTEM?

Autor: Ilhomjon Rajabov, Nasimjon Rajabov, Monika Mȩtrak, Bernhard Aichner, Dirk Sachse, Steffen Mischke, Małgorzata Suska-Malawska, Alexander Stolz, Mateusz Wilk, Janet Rethemeyer, Merle Gierga

Publikováno v: Radiocarbon

To elucidate the dynamics of terrestrial leaf waxes in a high-altitude lake system, we performed compound-specific radiocarbon analysis (CSRA) of long-chain n-alkanes in two sediment core sections from Lake Karakul (Pamirs, Tajikistan) and in surface

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4775f8cbba166238ecd2612eb613e8f2
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5009632

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Long-stored soil carbon released by prehistoric land use: Evidence from compound-specific radiocarbon analysis on Soppensee lake sediments

Autor: Michael Sturm, Irka Hajdas, Adrian Gilli, Merle Gierga, Rienk H. Smittenberg, Stefano M. Bernasconi, Lukas Wacker, Ulrike J. van Raden

Publikováno v: Quaternary Science Reviews

Compound-specific radiocarbon (C-14) analyses allow studying the fate of individual biomarkers in ecosystems. In lakes with small catchments, terrestrial biomarkers have the potential to be used fo ...

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https://doi.org/10.1016/j.quascirev.2016.05.011

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Characterization, quantification and compound-specific isotopic analysis of pyrogenic carbon using benzene polycarboxylic acids (BPCA)

Autor: Lukas Wacker, Stefano M. Bernasconi, Daniel B. Wiedemeier, Irka Hajdas, Gretchen L. Früh-Green, Ulrich M. Hanke, Rienk H. Smittenberg, Guido L. B. Wiesenberg, Michael W. I. Schmidt, Cameron McIntyre, Maximilian P W Scheider, Michael D. Hilf, Merle Gierga, Susan Q. Lang, Samuel Abiven

Publikováno v: Journal of Visualized Experiments
Journal of Visualized Experiments : JoVE
Journal of Visualized Experiments (JoVE)

Fire-derived, pyrogenic carbon (PyC), sometimes called black carbon (BC), is the carbonaceous solid residue of biomass and fossil fuel combustion, such as char and soot. PyC is ubiquitous in the environment due to its long persistence, and its abunda

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63cfe82d67fe6f694f37c1da2d87d058
https://eprints.gla.ac.uk/136626/1/136626.pdf

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Climate-sensitive ecosystem carbon dynamics along the soil chronosequence of the Damma glacier forefield, Switzerland

Autor: Iso Christl, Daniel Farinotti, Stefano M. Bernasconi, Hans Göransson, Rienk H. Smittenberg, Merle Gierga

Publikováno v: Global Change Biology. 18:1941-1955

We performed a detailed study on the carbon build-up over the 140-year-long chronosequence of the Damma glacier forefield, Switzerland, to gain insights into the organic carbon dynamics during the initial stage of soil formation and ecosystem develop

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https://doi.org/10.1111/j.1365-2486.2012.02654.x

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