The Water Framework Directive requires the assessment of the ecological status of transitional waters considering the fish component. An original methodology, based on a pressure-impact approach, was established to develop a multimetric fish-based index to characterize the ecological quality of French estuaries. An index of contamination, based on the chemical pollution affecting aquatic system...

It is crucial for our study and understanding of element transformations in low-oxygen waters that we are able to reproduce the in situ conditions during laboratory incubations to an extent that does not result in unacceptable artifacts. In this study, we have explored how experimental conditions affect measured rates of O2 consumption in low-O2 waters from the anoxic basin of Golfo Dulce (Cost...

There is increasing evidence that the use of chemicals frequently results in widespread environmental contamination with little understanding of the toxicological implications. Benzotriazoles are used in, among other applications, dishwashing formulations for home use, and are a class of chemicals recently reported to be present in European waters. This study demonstrates their presence in UK w...

In this study, possible sources of extremely high concentrations of arsenic (reaching as high as 561.5 μg/L) in the shallow groundwater of Simav plain, Turkey is studied in order to understand probable mechanisms of contamination. It has been found out that the major source of arsenic in groundwater is arsenic containing geological formations in and around the vicinity of the plain. However, th...

This chapter considers the economic evaluation of interventions concerned with the contamination of recreational and other waters by microbial pollution from livestock waste. The objective of such interventions is to reduce adverse impacts on water quality and public health. Because resources are scarce, regulatory choices imply trade-offs between the resources needed to manage the problem of w...

existence of heavy minerals in waters in some regions causes serious environmental pollution and affects the soil and water resources quality. soil and waters sensitive to pollutants were investigated in this research, based on the degree of sensitivity of their parameters. the samples obtained from industrial and agricultural areas for identifying water tables at higher risk and display region...

Surface discharges of anthropogenic nutrients historically have been the focus of Florida’s waterquality regulations. Groundwater contributions to eutrophication of Florida’s surface waters are a more recent focus. Florida’s naturally oligotrophic springs, streams, and lakes are experiencing significant anthropogenic nutrient contamination resulting from groundwater discharges with elevated nit...

Overview: Coastal embayments throughout the State of Massachusetts (and along the U.S. eastern seaboard) are becoming nutrient enriched. The nutrients are primarily related to changes in watershed land-use associated with increasing population within the coastal zone over the past half century. Many of Massachusetts' embayments have nutrient levels that are approaching or are currently over the...