Now showing items 1-10 of 69
Estimation of multiple transmission rates for epidemics in heterogeneous populations
(The National Academy of Sciences of the USA, 2007-12)
One of the principal challenges in epidemiological modeling is to parameterize models with realistic estimates for transmission rates in order to analyze strategies for control and to predict disease outcomes. Using a ...
Empirical evidence of spatial thresholds to control invasion of fungal parasites and saprotrophs
(Blackwell Publishing Ltd, 2004)
The ability to forecast invasion of harmful and beneficial organisms is becoming increasingly important in agricultural and horticultural production systems as well as in natural plant communities. • In this paper we ...
Automated statistical method to align 2D chemical maps with 3D X-ray computed micro-tomographic images of soils
Recent 2-dimensional measurements reveal that soils are chemically very heterogeneous at nanometric and micrometric scales. Direct measurement techniques are still lacking to extend these observations to 3 dimensions. ...
Modelling fungal growth in heterogeneous soil: analyses of the effect of soil physical structure on water distribution and fungal colonisation
Fungi play a pivital role in soil ecosystems contributing to plant productivity. The underlying soil physical and biological processes responsible for fungal colonistaion are interrelated and, at present, poorly understood. ...
Modeling soil system: complexity under your feet
(European Geosciences Union/Copernicus Publications, 2011)
Observer-dependent variability of the thresholding step in the quantitative analysis of soil images and X-ray microtomography data
For the investigation of many geometrical features of soils, computer-assisted image analysis has become a method of choice over the last few decades. This analysis involves numerous steps, regarding which subjective ...
Modelling and quantifying the effect of heterogeneity in soil physical conditions on fungal growth
(Copernicus Publications, 2010)
Despite the importance of fungi in soil ecosystem services, a theoretical framework that links soil management strategies with fungal ecology is still lacking. One of the key challenges is to understand how the complex ...
Implications of root spatial relationships in young wheat obtained from CT-scanning for an invasion by fungal pathogens
We analyse the way in which spatial arrangement of roots of plants provides a landscape for spread of soil microorganisms. We use a pathozone concept to characterise the behaviour at the individual root level, whereas ...
Combining X-ray CT and SEM-EDX to characterize soil micro-sites