Nitrate-nitrogen export: magnitude and patterns from drainage districts to downstream river basins.

Alteration of the prairie pothole ecosystem through installation of subsurface tile drains has enabled the U.S. Corn Belt to become one of the most agriculturally productive areas in the world but has also led to increased nitrogen losses to surface water.

How paired is paired? Comparing nitrate concentrations in three iowa drainage districts.

Quantifying the effectiveness of perceived best management practices (BMPs) at the field and landscape-scale is difficult, so paired watershed studies are used to detect water quality improvements. We evaluated concentrations of NO-N discharged from three tiled Iowa watersheds during a 4-yr period to assess their suitability for a paired watershed approach. Our objectives were to evaluate similarities in physical characteristics, concentration patterns, and correlation among the three paired sites and perform a minimum detectable change (MDC) analysis on paired site configurations.

Subjective well being of adolescents in boarding schools under threat of war.

How is subjective well being (SWB) of adolescents in boarding schools affected by threatened war, and related to perceived social support, self-control skills, and self-efficacy beliefs? Five hundred sixty-seven adolescents in five Israeli boarding schools completed questionnaires before the 2003 Iraq war. As expected, participants' fear of war affected SWB, and adolescents with high social support and self-control reported better SWB than low-scoring counterparts. Unexpectedly, self-efficacy regarding effective coping with upcoming war was unrelated to SWB.

Life strains, alienation, and drinking behavior.

This paper examines the effect on drinking behavior of chronic strains deriving from on-going work circumstances, and intermittent strains deriving from transitions imposed by life events: unemployment; economic strain; and stress experience (e.g., death in the family, serious illness, etc.