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Soil fungi appear to have a retarding rather than a stimulating role on soil apatite weathering Universiteit Hasselt
Aims Vegetation stimulates, in general, soil mineral weathering. It has been hypothesized that plant-associated microorganisms, especially ectomycorrhizal fungi play a major role in this process. We studied apatite dissolution in a vegetation gradient in southern Norway to test the role of ectomycorrhizal vegetation on mineral weathering. Methods A natural occurring lead contamination, probably present since the last glaciation, caused a ...
Chemical weathering in the volcanic soils of Isla Santa Cruz (Galápagos Islands, Ecuador) Universiteit Gent
Evaluation of salt damage during accelerated weathering on lime-based mortars by X-ray microtomography Universiteit Gent
Land use impacts on weathering, soil properties, and carbon storage in wet Andosols, Indonesia Universiteit Gent
We investigated changes in geochemical soil properties in response to deposition age and land use management over 30 - 50 years on tropical volcanic soils. Our purpose was to find out how weathering stage and land use interactively affect soil properties and organic carbon, and to check if phenoforms (management-related soil subtypes) exist within the genoforms (genetic soil types). Soil samples were taken at land uses that have been converted ...
Geochemical and petrographic characteristics of sediments along the transboundary (Kenya-Tanzania) Umba River as indicators of provenance and weathering Vrije Universiteit Brussel
The Umba River basin is one of the smaller-scale hydrological basins in the East African region. It traverses two countries, with its catchment in the Usambara mountains in Tanzania, while it drains its waters to the Indian Ocean in Vanga, Kenya. The chemical and mineralogical compositions of the riverbank and bottom sediments of the Umba River were analyzed and evaluated to describe their source characteristics and provenance. The dominant ...
Evaluating sensitivity of silicate mineral dissolution rates to physical weathering using a soil evolution model (SoilGen2.25) Universiteit Gent
Modeling evolution of weathering indices with SoilGen: preliminary results and perspectives Universiteit Gent
Weathering indices are a useful tool to quantify the degree of soil evolution and, when applied onto chronosequences, to estimate changes in rates of weathering through time. So far, most weathering indices are calculated using soil analytical data. We think that calculating them using the simulated elemental composition of soils over time will help to answer questions like (i) are the weathering-related processes in the model defined ...
Moisture conditions in coated wood panels during 24 months natural weathering at five sites in Europe Universiteit Gent
Wood moisture content of coated panels of Scots pine sapwood was recorded during 24 months natural weathering in Vienna by logging electric resistance and temperature near the surface. Eight coating systems with various film thicknesses were used, including three solvent borne alkyd stains, three water borne acrylic stains and two water borne acrylic paints. At five sites in Europe wood moisture content of panels coated with three solvent borne ...
Evaluating the degree of weathering in landslide-prone soils in the humid tropics: The case of Limbe, SW Cameroon Vrije Universiteit Brussel
This study analyses the behaviour and mobility of major and some trace elements during the physical and chemical development of landslide-prone soil profiles in Limbe, SW Cameroon. The soils result from in situ weathering of Tertiary basaltic and picrobasaltic rocks. Textural and chemical characterisations, together with two mass balance models are applied to understand the mobility and redistribution of elements during the weathering of ...