Nitrous oxide fluxes and nitrogen cycling along a pasture chronosequence in Central Amazonia, Brazil B. Wick, E. Veldkamp, W. Z. de Mello, M. Keller, and P. Crill Humboldt University Berlin, Department of Soil Science and Site Science, Invalidenstr. 42, D-10115 Berlin, Germany Institute of Soil Science and Forest Nutrition, Georg August University Göttingen, Büsgenweg 2, D-37077 Göttingen, Germ...

Magnesium (Mg) isotopes fractionate during rock/mineral weathering and leaching, secondary mineral neoformation, adsorption/desorption, plant-related Mg recycling, but the mechanisms extent of fractionation are not well understood. Here, we report fate its basalt soil development in Hawaiian Islands by sampling soils varying age (0.3, 20, 150, 1400, 4100 ka) undisturbed humid rainforests. conce...