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The article discusses the study which examines the differences in storm water quality measured during sampling techniques at several locations in stream cross-sections. The researchers have observed different degrees of concentration variability within stream cross-sections for dissolved and particulate constituents. The study indicates some substantial temporal concentration variability for dissolved and particulate constituents, but fails to account for potential variability in cross-sectional concentrations.

The coastal South American species Cyprinodon dearborni contains two lineages distinct at both mitochondrial and nuclear loci. One appears to be a long-term South American endemic, whereas the other is a more recent colonizer related to the widespread Cyprinodon variegatus. [ABSTRACT FROM AUTHOR]

The article focuses on neutralization potential (NP) determination of siderite (FeCO3) with the use of selected oxidants. The determination of NP can be interfered by siderite. Neutrolize acid has an effect on siderite . The reaction of the siderite has an effect on the NP. An examination was conducted on the effects of hydrogen peroxide, oxygen, and potassium permanganate on the NP of siderate samples. Oxidation treatments on siderite samples have different results. Oxidation with oxygen is the most accurate in examining NP.

Reports that a hybrid poultry litter and inorganic N fertilization program can supply necessary crop nutrients without detrimental impacts on runoff water quality, but only if recommended best management practices are followed. Demonstration that a properly managed annual litter application of 1 to 2 tons per acre provides a sustainable alternative to disposal techniques and produces little or no negative water quality impact.