Soil and vegetation are two critical factors for controlling the overland transport kinetics of pathogens in a natural environment. With livestock operations moving more towards concentrated animal operations, the need to dispose of a very large amount of manure in a localized area is becoming increasingly important. Animal manure contains a substantial amount of microbial pathogens, including ...

The objective of this paper is to provide a general overview of the influence of wildland fires on the erosional processes common to the forested landscapes of the western United States. Wildfire can accelerate erosion rates because vegetation is an important factor controlling erosion. There can be great local and regional differences, however, in the relative importance of different erosional...

Vegetated filter strips (VFS) have become an important component of water quality improvement by reducing sediment and nutrients transport to surface water. This management practice is also beneficial for controlling manure-borne pathogen transport to surface water. The objective of this work was to assess the VFS efficiency and evaluate the uncertainty in predicting the microbial pollutant rem...

Sensitivity analysis and parameter estimation for the distributed modeling of infiltration excess overland flow W. Castaings, D. Dartus, F.-X. Le Dimet, and G.-M. Saulnier LMC-IMAG UMR 5523 (CNRS,INPG,UJF,INRIA) Grenoble, France IMFT UMR 5502 (CNRS,INP,UPS) Toulouse, France LTHE UMR 5564 (CNRS, INPG, IRD, UJF) Grenoble, France now at: EC/JRC/IPSC Ispra, Italy Received: 17 January 2007 – Accepte...

Limited data on microbial partitioning between the freely suspended and particulate attached phases during transport along overland flow pathways have resulted in high uncertainty in bacterial fate and transport models and the application of these models to watershed management plans. The objectives of this study were to examine differences in attachment between E. coli and enterococci in runof...

* Corresponding author. USDA – ARS, SEWRL E-mail addresses: [email protected] (J. Cho), sm 1537-5110/$ – see front matter Published by doi:10.1016/j.biosystemseng.2009.01.011 Non-point source simulation models are commonly used tools for examining water and water quality issues. The dynamic agricultural non-point source assessment tool (DANSAT) is the distributed-parameter, physically-based, and cont...

Watershed is regarded as a very complex system of natural, social, economic and ecological dimensions and like any similar systems, exploitation of its resources requires a comprehensive and coordinated planning and management. Given the importance of watershed management projects for the development and management of natural resources, the enhancement of the efficiency of these activities is e...