0000000000343917

AUTHOR

Andreas Kappler

showing 2 related works from this author

Organic coating on biochar explains its nutrient retention and stimulation of soil fertility

2017

Amending soil with biochar (pyrolized biomass) is suggested as a globally applicable approach to address climate change and soil degradation by carbon sequestration, reducing soil-borne greenhouse-gas emissions and increasing soil nutrient retention. Biochar was shown to promote plant growth, especially when combined with nutrient-rich organic matter, e.g., co-composted biochar. Plant growth promotion was explained by slow release of nutrients, although a mechanistic understanding of nutrient storage in biochar is missing. Here we identify a complex, nutrient-rich organic coating on co-composted biochar that covers the outer and inner (pore) surfaces of biochar particles using high-resoluti…

ScienceSettore AGR/13 - Chimica AgrariaGeneral Physics and AstronomyBiomass010501 environmental sciencesCarbon sequestrationengineering.materialcomplex mixtures01 natural sciencesArticleGeneral Biochemistry Genetics and Molecular BiologyPhysics and Astronomy (all)NutrientCoatingSoil retrogression and degradationBiocharOrganic matterlcsh:Science0105 earth and related environmental sciences2. Zero hungerchemistry.chemical_classificationBiochemistry Genetics and Molecular Biology (all)MultidisciplinaryQChemistry (all)fungi04 agricultural and veterinary sciencesGeneral Chemistry15. Life on landchemistryAgronomy13. Climate actionEnvironmental chemistry040103 agronomy & agricultureengineering0401 agriculture forestry and fisherieslcsh:QChemistry (all); Biochemistry Genetics and Molecular Biology (all); Physics and Astronomy (all)Soil fertilityNature Communications
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Abiotic versus biotic iron mineral transformation studied by a miniaturized backscattering Mössbauer spectrometer (MIMOS II), X-ray diffraction and R…

2017

Abstract Searching for biomarkers or signatures of microbial transformations of minerals is a critical aspect for determining how life evolved on Earth, and whether or not life may have existed in other planets, including Mars. In order to solve such questions, several missions to Mars have sought to determine the geochemistry and mineralogy on the Martian surface. This research includes the two miniaturized Mossbauer spectrometers (MIMOS II) on board the Mars Exploration Rovers Spirit and Opportunity, which have detected a variety of iron minerals on Mars, including magnetite (Fe2+Fe3+2O4) and goethite (α-FeO(OH)). On Earth, both minerals can derive from microbiological activity (e.g. thro…

GoethiteMineral010504 meteorology & atmospheric sciencesChemistryMineralogyAstronomy and AstrophysicsContext (language use)Mars Exploration Program01 natural scienceschemistry.chemical_compoundFerrihydriteSpace and Planetary ScienceMartian surfacevisual_art0103 physical sciencesMössbauer spectroscopyvisual_art.visual_art_medium010303 astronomy & astrophysics0105 earth and related environmental sciencesMagnetiteIcarus
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