Stream and Groundwater Influences on Phosphorus Biogeochemistry

Thermal influence of urban groundwater recharge from stormwater infiltration basins

“…Moreover, re-oxygenation of infiltrating stormwater could also occur in deeper layers of the vadose zone. Nevertheless, the downward flow of anoxic stormwater during warm rainfall events could promote the migration at depth of dissolved phosphate produced by the mineralization organic matter stored in the infiltration bed (Hendricks and White, 2000;Nogaro et al, 2007). This plausible mechanism would account for the increase in phosphate concentrations of groundwater observed below several SIB of the Lyon metropolitan area (Datry et al, 2005).…”

Riverbank filtration for the treatment of highly turbid Colombian rivers

“…Phosphorus removal is influenced by the sedimentary structure of the subsoil (Hendricks and White, 2000). Its sorption is linked to the exchange between the river water and the soil matrix (Hülshoff et al, 2009;Smith, 2005).…”

Hydrogeology and Water Quality of the Pepacton Reservoir Watershed in Southeastern New York. Part 3. Responses of Stream Base-Flow Chemistry to Hydrogeologic Factors and Nonpoint-Sources of Contamination

“…P that is derived from manure has been reported to have greater downward mobility than P derived from chemical fertilizer through a soil layer with a high P-sorption capacity (calcium carbonate; Eghball and others, 1996); organic forms of P were surmised to have greater mobility than inorganic forms. Organic P that reaches streams can be converted to orthophosphate by streambed microbial communities that produce exoenzymes (Hendricks and White, 2000). Phosphorus transport to streams can be a serious issue at dairy farms, where the need to dispose of manure is constant, regardless of soil conditions (Sims and others, 1998).…”

“…Desorption of P from sediments can occur where P concentrations in the surrounding waters are low. Phosphorus release from metal oxides and hydroxides can occur under anaerobic conditions (Allen, 1995;Hendricks and White, 2000;Sallade and Sims, 1997b) when the metal ions (particularly Fe) are reduced through bacterial decomposition of organic matter. This process is a potential means of P release from three sources-P-rich (manured) seasonally saturated soils (Vadas and Sims, 1998), sediment that is washed into drainage ditches from cultivated fields during storms (Sallade and Sims, 1997a, b), and hyporheic zones along streams (Hendricks and White, 2000).…”