Abstract Termite mounds have been poorly studied in tropical rainforest contrast to those of savannahs where they create fertility hotspots and influence the spatial pattern vegetation. An inventory termite 15 tree species with a diameter at breast height ≥ 10 cm was carried out two 800-ha blocks, sites located northern Congo. We used inhomogeneous intertype K functions study around mounds, res...

Transient water table systems under the influence of decaying groundwater mounds are studied in terms of the Dupuit-Forcheimer approximation, its linearization and linear potential theory. Parabolic mounds spreading and shrinking due to gravity and évapotranspiration are derived from the general class defined by PolubarinovaKochina (1945). The penetration curves are calculated as characteristic...

The transition to multicellularity is a key feature of the Dictyostelium life cycle, and two genes, gbf and lagC, are known to play pivotal roles in regulating this developmental switch. lagC-null and gbf-null cells fail to induce cell-type-specific genes ordinarily expressed during multicellular development. The null mutants also share a similar morphological phenotype: mutant cells repeatedly...

Water scarcity constrains the livelihoods of millions of people in tropical drylands. Tree planting in these environments is generally discouraged due to the large water consumption by trees, but this view may neglect their potential positive impacts on water availability. The effect of trees on soil hydraulic properties linked to groundwater recharge is poorly understood. In this study, we per...

We have presented the kinetic study of the very initial growth stages of an ultra thin film (40Å-150Å) of Ag sputter-deposited on Si(001) substrate containing native oxide using grazing incidence x-ray reflectivity (GIXR) technique and Atomic Force Microscopy (AFM). We observe that the film consists of mounds with the presence of voids. The thickness 'd xray ' and the packing fraction 'η' of th...