Anopheles squamifemur has been identified from CDC light trap collections carried out at Arca de Israel, a small community located in the extreme north-east of Bolivia (Pando Department) on the banks of the river Madera, on the border with Brazil. Anopheles costai and An. forattinii have been identified in place of An. mediopunctatus which has been removed from the Bolivian list of Anopheles sp...

Many members of some colonies of wild rats living along the banks of the Po River dive for and feed on molluscs living on the river bottom, No members of nearby colonies, having equal access to molluscs, exploit them as a food source. It has been suggested that these field observations indicate that social transmission processes are responsible for the spread of mollusc predation within predace...

A part of the domestic waste of the city of Geneva (Switzerland) is transported with ship convoys on the Rhone River to the waste incineration station. These convoys generate waves, which partially endangers the stability of the river banks and the riparian fauna. To reduce the dominant wave peaks, a flap was added at the stern of the barge. The efficiency of that flap was tested in physical an...

Seasonal changes in runoff and inundation create river-habitats that are considered key to the diversity of Amazonian bird species. However, studies on avifauna different riverine habitats remain scarce. We used camera traps survey river-created along 39 km river eastern Brazilian Amazon. examined number species detected composition islands margin banks, evaluated species–area relationships the...

Abstract In the 1940s, Delaware River at Philadelphia was so dirty that pilots could smell it from air. The water harsh corroded metal and discolored paint. Fish killed by pollution washed up on Delaware’s banks. lack of oxygen in parts river blocked critical migration others.

Abstract Purpose Lake Victoria has been increasingly silting over the past decades, impacting water quality and loss of biodiversity. Sediment control strategies require information on relative absolute contributions sediment from different sources. However, to date, there is no continuous monitoring flux or in any tributaries, prohibiting an assessment scale problem. The aim this study was tra...

Escherichia coli are often used as faecal indicator bacteria (FIB) to provide a measure of microbial pollution in recreational and shellfish harvesting waters. However, although model forecasts for predicting the concentrations of FIB in surface waters are becoming more robust, they suffer from an inconsistency in quantification methods and an understanding of the spatial variation of FIB withi...

An attempt has been made in this present work, to study the seasonal variations of water quality of River Godavari for the period of 2004-2012 at Rajahmundry and Dhawaleswaram located on the banks of River Godavari in Andhra Pradesh. This water quality modelling is done with the help of Water Quality Indices (WQI) computed using NSFWQI and WAIWQI methods. Multivariate statistical techniques nam...

Soil erosion is the main pathway of nutrients to fresh water in highly erodible regions. In this study, a dynamic erosion-type nonpoint source (NPS) pollution model was proposed to investigate spatiotemporal characteristics of adsorbed NPS total nitrogen (TN) load before and after returning farmland. Results indicate that: 1) the erosion-type NPS TN load showed a significant decreasing trend si...