Kano river basin, which serves as the main source of water supply to metropolitan Kano, is also used as receiving body for industrial wastes from Sharada and Challawa industrial estates. Of the three major rivers in this basin, the Salanta river was found to receive the highest pollution from the industrial discharges with COD of 8,557.4mg/l, total solids of 16,934.6mg/l, hardness of 1,349.6mg/...

Products containing perfluorinated compounds (PFCs) have been widely used during the last 50 years. As a result, worldwide environmental pollution by PFCs has been reported. The sources of PFC pollution in the aquatic environment have been poorly understood. In this study, river water and sewage treatment plant (STP) effluent were sampled along the stretch of the Tsurumi River and also at a fix...

Background: Survey of pollution and evaluation of water quality in rivers with Oregon Water Quality Index (OWQI) and GIS are effective tools for management of the impact of environmental water resources. The information in calculating the WQI of Moradbeik river allowed us to take our tests results and make a scientific conclusion about the quality of water. GIS can be a powerful tool for develo...

During its journey, the river water suffers natural or anthropic contamination, deteriorating quality. This impact can be qualified by determining pollution Indexes (IPO). The work aimed to evaluate spatial and temporal variation of IPOs in high Andean micro-basin Chumbao River. study included section from 13°46'38.4” S, 73°15'32.3” W at 4079 m altitude up 13°35'26.4” 73°27'00.8” 2572 altitude....

The impact of pesticides on macrobenthos communities was studied on two aquatic environments in Northern Italy; River Meolo, a site exposed to agricultural pollution, and River Upper Livenza a low pollution reference site. Colonisation of artificial substrates was compared throughout the productive season. The relevance of multiple environmental stressors other than pesticides (e.g. oxygen depl...

Abstract The physico-chemical and microbial examination of Ajali River in Ezeagu Local Government Area (LGA) Enugu State, South-eastern Nigeria, were carried out to assess the characteristics water for potability. Water samples collected from three sampling points, including one close brewery effluent discharge into river two different points that affected by non-point sources. Altogether, eigh...

We examine the effect of political decentralization on pollution spillovers across jurisdictional boundaries. Upstream water use has spillover effects on downstream jurisdictions, and greater decentralization (i.e. a larger number of political jurisdictions managing the same river) may exacerbate these spillovers, as upstream communities have fewer incentives to restrain their members from poll...

the reproductive biology of the iranian cichlid, iranocichla hormuzensis coad, 1988, was investigated for 13 consecutive months in lower mehran river, from august 2008 through august 2009. four hundred and eighty six individuals (252 males and 234 females) were captured using a seine net (5 mm mesh size). the observed sex ratio was 1m: 0.93f (χ², df = 1, p = 0.414). mean ± sd of total length (t...

Tidal streams are complex watercourses that represent a transitional zone between riverine and marine systems; they occur where fresh and marine waters converge. Because tidal circulation processes cause substantial turbulence in these highly dynamic zones, tidal streams are the most productive of water bodies. Their rich biological diversity, combined with the convenience of land and water tra...