A new regulatory approach is needed to characterize peak pesticide concentrations in surface waters over a range of watershed scales. Methods now in common use rely upon idealized edge-of-field scenarios that ignore scaling effects. Although some watershed-scale regulatory models are available, their complexity generally prevents them from being used duringthe pesticide registration decision pr...

Nutrient loading into rivers is generally increased by human-induced land-use changes and can lead to increased surface water pollution. Understanding the extent to which land-use patterns influence nutrient loading is critical to the development of best-management practices aimed at water-quality improvement. In this study, we investigated total nitrogen (total N) concentration as a function o...

Mathematical models are well known as useful tools for water management practices, directly or indirectly related to the implementation of the Water Framework Directive (WFD) in European countries. They can be applied to solve or understand either simple water quality problems or complex water management problems of trans-boundary rivers or multiple-purpose and stratified reservoirs. Accidental...

Electrical resistivity tomography (ERT) has seen increased use in the monitoring condition of river embankments, due to its spatial subsurface coverage, sensitivity changes internal states, such as moisture content, and ability identify seepage other erosional process with time-lapse ERT. Two-dimensional ERT surveys are commonly used time site constraints, but they often sensitive features anom...

Mathematical models for water quality problems in rivers and streams are now an efficient tool in water resources management. Their basic principle is the differential equation of pollution transport, which can be integrated both in analytical and numerical form. From this equation the broad category of “fickian” models has been developed. The numerical procedures available so far are the finit...

Short rainfall, elevated rates of evaporation, exhaustion of underground water levels and highly inconsistent stream flow regimes have encouraged the construction of big dams and other water regulating infrastructure development resulting in degradation of river ecosystems. These major changes transform and reduce the biological composition of rivers, isolating populations of aquatic life and t...

This paper makes three contributions to the field of transition research. First, it sheds light on how the concept of translation can contribute to a better understanding of agency in niche development. Second, it articulates how the local-global distinction in the Strategic Niche Management (SNM) approach relates to the levels in the Multi-Level Perspective. Third, the article is empirically n...

Presence or absence of Campylobacter spp. in water of five rivers upstream from an intake point for drinking water production was investigated, and isolates genetically compared with human, pig and poultry isolates in order to determine their source. River water and drinking water obtained from these rivers were sampled one time per month, over a period of one year, and tested for Campylobacter...