• Publications
  • Influence
Multifractal Characterization of Soil Pore Systems
Spatial arrangement of soil pores determines soil structure and is important to model soil processes. Geometric properties of individual pores can be estimated from thin sections, but there is noExpand
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Tailoring agricultural extension to different production contexts: a user-friendly farm-household model to improve decision-making for participatory research
Abstract Farmers operate within specific natural and socio-economic settings. When those settings are very diverse, as in mountainous areas, agricultural extension services have often failed toExpand
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Socio-economic Comparison Between Traditional and Improved Cultivation Methods in Agroforestry Systems, East Usambara Mountains, Tanzania
ABSTRACTThe East Usambara Mountains, recognized as one of the 25 most important biodiversity hot spots in the world, have a high degree of species diversity and endemism that is threatened byExpand
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Understanding precipitation patterns and land use interaction in Tibet using harmonic analysis of SPOT VGT‐S10 NDVI time series
Time series analysis of Normalized Difference Vegetation Index (NDVI) imagery is a powerful tool in studying land use and precipitation interaction in data‐scarce and inaccessible areas. The FastExpand
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Is Poverty to Blame for Soil, Pasture and Forest Degradation in Peru’s Altiplano?
Abstract Multiple regression analysis of 1999 farm survey data from the Peruvian Altiplano finds that natural resource sustainability is not correlated with poverty; rather it varies by managementExpand
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PAH fluxes in the Laja Lake of south central Chile Andes over the last 50 years: evidence from a dated sediment core.
  • R. Quiroz, P. Popp, +4 authors R. Barra
  • Environmental Science, Medicine
  • The Science of the total environment
  • 15 October 2005
This paper reports the occurrence of polyaromatic hydrocarbons (PAHs) deposition inferred from a sediment core of an Andean lake in south central Chile. Sediments were carefully collected from one ofExpand
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Sources of polycyclic aromatic hydrocarbons (PAHs) in sediments of the Biobio River in south central Chile
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous in the environment; there are concerns about them due to their toxic properties. Human activities could significantly contribute to the totalExpand
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Atmospheric transmissivity: distribution and empirical estimation around the central Andes
This study of the distribution in space and time of atmospheric transmissivity τ takes into account the fact that, in complex terrain, many factors affect this variable; thus, it is not possible toExpand
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Spectroscopic Assessment of Soil Organic Matter in Wetlands from the High Andes
Wetlands are valuable for their function as C sinks, water conservation and filtering, flood control, and as a recreational landscape. In the Central and Southern Andes, peatlands (a.k.a., bofedales)Expand
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Conservation and Cardamom Cultivation in Nature Reserve Buffer Zones in the East Usambara Mountains, Tanzania
Forest destruction continues to be a major threat to the unique biological diversity of the East Usambara Mountains in Northeast Tanzania. One of the most serious current pressures comes from theExpand
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