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Soil micromorphology in thin section and near infrared reflectance spectroscopy (NIRS) are useful techniques for assessing the participation of soil macrofauna in the formation of aggregates and soil structure. The purpose of this study was to use micromorphological analysis and NIRS techniques to assess the role of soil fauna in the recovery of soil aggregates and in the modification of soil microstructure...
Multifractal turbulence formalism has been used to describe the time series in simulated passive tracer transport in a vegetated open-channel, phenomenon characterized by a high temporal non-linear variability. A study of the empirical statistical moments scaling function for several scale ratios reveals the presence of a multifractal phase transition associated with one critical moment. The parameters...
Soil organic matter (SOM) in dry tropical forests (DTFs) of Costa Rica is less studied compared to wet tropical forests. Specifically, black carbon (BC) from biomass burning during the dry season but also prescribed burning during any prior pastoral land use contributes to SOM in DTF. Data on BC are needed for predicting the response of the soil organic carbon (SOC) pool to the projected climate change...
In contrast to tropical rain forests, mechanisms of soil organic carbon (SOC) stabilization in dry tropical forest (DTF) are less known. Therefore, the objective of this research was to compare mineral phase properties and chemically separated C fractions to 50-cm depth at three sites in the Sector Santa Rosa of Área de Conservación Guanacaste (ACG), Costa Rica: (i) >400 yr. old-growth forest (Of),...
Soil geometry is complex, often multiscale, and flow models should better account for it. Previous works have shown that the flow velocity distribution simulated in idealised porous media with similar geometries exhibits a multifractal type of scaling. The aim of this work is to describe the influence of the porous media geometry on the flow velocity distributions by using multifractal analysis. The...
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