The Impact of Sewage Discharge in a Marine Embayment: A Stable Isotope Reconnaissance

Long-Term Monitoring of Anthropogenic Impacts from the Brazilian Antarctic Station Comandante Ferraz (King George Island): Isotopic Analysis of C and N

“…In front of the Brazilian station (EACF), the set of δ C (Peterson, 1999;Waldron et al, 2001;Rogers, 2003;Conlan et al, 2006). e δ 15 N values for sediment under the sewage in uence are more enriched and can be related to a higher ammonia concentration of anthropogenic origin (Peterson, 1999;Waldron et al, 2001;Conlan et al, 2006).…”

“…e δ 15 N values for sediment under the sewage in uence are more enriched and can be related to a higher ammonia concentration of anthropogenic origin (Peterson, 1999;Waldron et al, 2001;Conlan et al, 2006). …”

“…e carbon and nitrogen ratios (expressed as δ Eutrophication or increased load of organic matter in marine nearshore environments can be attributed to anthropogenic inputs of sewage e uents. Stable-carbon or stable-nitrogen isotope analysis are also becoming useful to identify the source, extent and the fate of biologically available sewage carbon and nitrogen (Peterson, 1999;Costanzo et al, 2001;Waldron et al, 2001;Gartner et al, 2002;Rogers, 2003). Scienti c and logistic activities in Antarctica have introduced anthropogenic compounds in otherwise pristine areas (Martins et al, 2005).…”

Monitoring the impact of human activities in Admiralty Bay, King George Island, Antarctica: isotopic analysis of c and n in the summer of 2005/2006

“…The carbon and nitrogen ratios (expressed as δ Eutrophication or increased load of organic matter in marine nearshore environments can be attributed to anthropogenic inputs of sewage effluents. Stable-carbon or stable-nitrogen isotope analysis are also becoming useful to identify the source, extent and the fate of biologically available sewage carbon and nitrogen (Peterson, 1999;Costanzo et al, 2001;Waldron et al, 2001;Gartner et al, 2002;Rogers, 2003). Scientific and logistic activities in Antarctica have introduced anthropogenic compounds in otherwise pristine areas (Martins et al, 2005).…”

Effects of Watershed Land use on Nitrogen Concentrations and δ15 Nitrogen in Groundwater

“…Different sources of nitrogen can be identified using nitrogen stable isotopes, but only when the sources have distinctive isotope signatures, particularly wastewater (McClelland et al 1997;Kendall 1998). In untreated sewage, ammonium typically has a δ 15 N of +5 to +9 ‰ (Aravena et al 1993;Waldron et al 2001), and volatilization, nitrification, and subsequent denitrification within the septic system or wastewater treatment plant can enrich remaining nitrate in 15 N relative to 14 N.…”