Univ.-Prof. Bernard Ludwig - Research Information System | University of Kassel - CONVERIS Research Information System

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Prof. Dr. Bernard Ludwig

Projects as Principal Investigator

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04/2023 - 03/2026	Designed experiments for optimizing infrared spectroscopic characterizations and quantifications of soil organic matter at scales of increasing complexity: importance of band shifts, spectral variable selection and subtraction approaches
01/2022 - 11/2025	Combined use of laboratory-based and portable infrared and x-ray fluorescence spectroscopy approaches for the spatial-vertical characterization of samples of selected soil groups
04/2021 - 03/2024	Are interactions of labile substrates with biochars the key process explaining C stabilization by biochars? A proof of concept by isotopic approaches
04/2018 - 12/2021	Synergetic use of mobile and lab-based spectroscopic techniques (vis-NIR, lab and hand-held MIR, portable hyperspectral frame camera) to optimize the determination of soil properties with high variability in time and space
2016 - 2019	FOR 2432: Social-Ecological Systems in the Indian Rural-Urban Interface: Functions, Scales, and Dynamics of Transition - Teilprojekt: Intensivierungseffekte auf Stoffflüsse in Rural-Urbanen Anbausystemen in der Forschergruppe
2016 - 2019	Social-Ecological Systems in the Indian Rural-Urban Interface: Functions, Scales and Dynamics of Transition. Cluster A: Matter flows in rural-urban cropping systems
06/2013 - 2016	Effects of water content, input of roots and dissolved organic matter and spatial inaccessibility on C turnover & determination of the spatial variability of subsoil properties (Teilprojekt der Forschergruppe FOR 1806: Der vergessene Teil des Kohlenstoffkreislaufs: Lagerung und Umsatz des organischen Materials im Unterboden)
09/2011 - 2014	Bedeutung der Stickstoff-Aufnahmepfade von Mikroorganismen im Boden
2011 - 2015	Optimierung der Einsatzfähigkeit der Infrarot-Reflexionsspektroskopie in der Bodenökologie: Bestimmung der Zusammensetzung und Stabilität der organischen Bodensubstanz und Vorhersagen in offenen Populationen
01/2007 - 12/2010	Steuerung von Humus- und Nährstoffhaushalt in der Ökologischen Landwirtschaft

Projects as Co-Investigator

02/2019 - 12/2020	PPP China ab 2018
2007 - 2011	Steuerung von Humus- und Nährstoffhaushalt in der Ökologischen Landwirtschaft: Teilprojekt F1 - Gasförmige und sickerungsbedingte C- und N-Verluste aus gedüngten und bewässerten Ackerflächen einer subtropischen Küst
01/1994 - 12/2000	ökochemisches Profil von Enrofloxacin in Boden und Wasser

Publications

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2005	Michel, K., Ludwig, B., 2005. Modelling of seepage water composition from experiments with an acid soil and a calcareous sediment. Acta hydrochimica et hydrobiologica / Journal for Water and Wastewater Research 33, 595–604. https://doi.org/10.1002/aheh.200400603
2005	Ludwig, B., Helfrich, M., 2005. Modelling the long-term stabilization of carbon from maize in a silty soil. Plant and Soil 278, 315–325. https://doi.org/10.1007/s11104-005-8808-2
2005	Ludwig, B., 2005. Savanna-derived organic matter remaining in arable soils of the South African Highveld long-term mixed cropping: Evidence from 13C and 15N natural abundance. Soil Biology and Biochemistry 37, 1898–1909. https://doi.org/10.1016/j.soilbio.2005.02.030
2005	John, B., Yamashita, T., Ludwig, B., Flessa, H., 2005. Storage of organic carbon in aggregate and density fractions of silty soils under different types of land use. Geoderma 128, 63–79. https://doi.org/10.1016/j.geoderma.2004.12.013
2004	Ludwig, B., 2004. Carbon and nitrogen mineralisation after maize harvest between and within maize rows: a microcosm study using 13C natural abundance. Journal of Plant Nutrition and Soil Science 167, 270–276. https://doi.org/10.1002/jpln.200321255
2004	Ludwig, B., 2004. Contribution of nitrification and denitrification to the emission of N2O in a freeze-thaw event in an agricultural soil. Journal of Plant Nutrition and Soil Science 167, 678–684. https://doi.org/10.1002/jpln.200421462
2004	Teepe, R., Vor, A., Beese, F.O., Ludwig, B., 2004. Emissions of N2O from soils during cycles of freezing and thawing and the effects of soil water, texture and duration of freezing. European Journal of Soil Science 55, 357–365. https://doi.org/10.1111/j.1365-2389.2004.00602.x
2004	Teepe, R., Beese, F.O., Brumme, R., Ludwig, B., 2004. Nitrous oxide emission and methane consumption following compaction of forest soils. Soil Science Society of America Journal 68, 605–611. https://doi.org/10.2136/sssaj2004.6050
2004	Ludwig, B., 2004. Variability of CO2 and N2O emissions during freeze-thaw cycles: results of model experiments on undisturbed forest-soil cores. Journal of Plant Nutrition and Soil Science 167, 153–159. https://doi.org/10.1002/jpln.200321313
2003	Ludwig, B., 2003. Carbon dynamics determined by natural C-13 abundance in microcosm experiments with soils from long-term maize and rye monocultures. Soil Biology and Biochemistry 35, 1193–1202. https://doi.org/10.1016/S0038-0717(03)00180-9