Benthic macroinvertebrates respond to several factors characterizing the physical habitats, as water depth, current and streambed substrate. Thus, anthropogenic disturbances altering these may have different effects on benthos, also depending mesohabitats. These include sediment flushing operations, commonly carried out recover reservoir capacity, investigating their at mesohabitat scale could ...

Porosity and permeability are two fundamental reservoir parameters. We study how important large variations in their values for residual oil saturation estimates from Single Well Chemical Tracer tests. Although porosity do not enter the classical chromatography formulae, or thereof, that does necessarily imply they irrelevant all real scenarios. This is because govern fluids distributed within ...

Anthropogenic activities can greatly influence the lake ecosystems across globe. Within these ecosystems, impacts of human are most evident on sedimentation, light and nutrient availability, disturbance frequency. There have been times natural environmental healing reservoirs present research aims to explore variations in water quality Tarbela reservoir, Pakistan largest rock-filled dam world, ...

Water taps can be a reservoir for microorganisms and pose risk contamination infection. In this work, water samples from different common were examined to determine the influence of certain parameters on microbial load drinking water. Methods: Four types installed along same pipe. Over period six months, taken at specific intervals analyzed their colony-forming units (CFU/mL) presence pathogens...

Sixty Ghezel ewes (age 3.5 years) were used to study the effect of different nitrogenous supplements in flushing ration on reproductive performance. Experimental treatments were divided in five groups: group A: urea; group B: soybean meal (SBM); group C: corn gluten meal (CGM); group D: barley grain and group E: control or basal diet (no flushing). The four flushing rations had nearly the same ...

Forced by tides and waves, large volumes of seawater are flushed through the beach daily. Organic material and nutrients in seawater are remineralized and cycled as they pass through the beach. Microorganisms are responsible for most of the biogeochemical cycling in the beach; however, few studies have characterized their diversity in intertidal sands, and little work has characterized the exte...

A substantial reservoir (up to 1 kg ha(-1)) of natural perchlorate is present in diverse unsaturated zones of the arid and semi-arid southwestern United States. The perchlorate co-occurs with meteoric chloride that has accumulated in these soils throughout the Holocene [0 to 10-15 ka (thousand years ago)] and possibly longer periods. Previously, natural perchlorate widely believed to be limited...