Matches in SemOpenAlex for { <https://semopenalex.org/work/W1991359341> ?p ?o ?g. }
- W1991359341 endingPage "751" @default.
- W1991359341 startingPage "743" @default.
- W1991359341 abstract "In Réunion Island, expanding human populations, urbanization and agriculture during the last 50 years have all contributed to a steady increase in the level of nitrates in drinking water. Various nitrate point sources are responsible for the nitrate contamination around the island including chemical fertilizers, animal effluent applied to pasture and crops, and urban waste such as sewage and domestic waste water. In terms of agricultural fertilizers, pig effluent is the most widely used, but the cumulative effects of slurry applications on soil water and groundwater are unknown. Our objectives were (1) to characterize and follow in situ the fate of nitrogen through the subsurface after application of pig effluent onto a cultivated soil using stable nitrate isotopes, δ15N and δ18O, and (2) to compare the isotopic signatures of Réunion Island’s principal aquifers with results from the experimental site to infer potential contamination sources. The study was conducted on an experimental field site planted with maize in the western part of Réunion Island during the rainy season. A control site with no fertilizer application to the maize was compared with the investigation site which had pig effluent applied once a year. The site which had pig effluent applied over one year had an average maximum surface soil water 15N-NO 3 − value of +9.0%o at 0.45 m depth. This signature was significantly more enriched in 15N than the corresponding subsurface soil water 15N-NO- 3 − value of +3.8%o at 10 m depth. The control site average maximum surface soil water 15N-NO 3 − value of +3.6%o at 0.45 m is similar to the subsurface pig effluent application plot. This indicates that nitrates derived from pig effluent have not reached 10 m depth in the subsurface, even though over the last 18 months this site was subjected to two effluent applications, each around 200 kg N ha−1, and more than 1900 mm of rain, more than half of which drains directly into the root zone. This slow migration shows that mobilization of nitrates through cultivated soil can take many tens of years before infiltrating and contaminating the saturated zone situated at several tens, and in places, hundreds of meters depth. On an island-wide scale, an isotopic assessment of nitrates from the experimental site’s soil water and other drinking water wells highlights a nitrogenous contamination derived primarily from urban and/or agriculture via effluent application." @default.
- W1991359341 created "2016-06-24" @default.
- W1991359341 creator A5005267966 @default.
- W1991359341 creator A5013397353 @default.
- W1991359341 creator A5039749301 @default.
- W1991359341 creator A5054300757 @default.
- W1991359341 creator A5090258482 @default.
- W1991359341 date "2010-12-01" @default.
- W1991359341 modified "2023-10-16" @default.
- W1991359341 title "Evidence of soil pollution by nitrates derived from pig effluent using 18O and 15N isotope analyses" @default.
- W1991359341 cites W1965646887 @default.
- W1991359341 cites W1979190098 @default.
- W1991359341 cites W1980716921 @default.
- W1991359341 cites W1980793623 @default.
- W1991359341 cites W1984969322 @default.
- W1991359341 cites W1986328108 @default.
- W1991359341 cites W1986962259 @default.
- W1991359341 cites W1994549598 @default.
- W1991359341 cites W1996712189 @default.
- W1991359341 cites W2002616936 @default.
- W1991359341 cites W2003800999 @default.
- W1991359341 cites W2017433613 @default.
- W1991359341 cites W2021055698 @default.
- W1991359341 cites W2029741085 @default.
- W1991359341 cites W2033978351 @default.
- W1991359341 cites W2035552306 @default.
- W1991359341 cites W2068312108 @default.
- W1991359341 cites W2068512938 @default.
- W1991359341 cites W2068844696 @default.
- W1991359341 cites W2070000794 @default.
- W1991359341 cites W2072191315 @default.
- W1991359341 cites W2075406903 @default.
- W1991359341 cites W2091948532 @default.
- W1991359341 cites W2092170981 @default.
- W1991359341 cites W2094207113 @default.
- W1991359341 cites W2100681918 @default.
- W1991359341 cites W2140761469 @default.
- W1991359341 cites W2149076371 @default.
- W1991359341 cites W21588666 @default.
- W1991359341 cites W2166142294 @default.
- W1991359341 cites W4241498658 @default.
- W1991359341 cites W4248143307 @default.
- W1991359341 cites W90432114 @default.
- W1991359341 doi "https://doi.org/10.1051/agro/2009056" @default.
- W1991359341 hasPublicationYear "2010" @default.
- W1991359341 type Work @default.
- W1991359341 sameAs 1991359341 @default.
- W1991359341 citedByCount "5" @default.
- W1991359341 countsByYear W19913593412013 @default.
- W1991359341 countsByYear W19913593412016 @default.
- W1991359341 countsByYear W19913593412023 @default.
- W1991359341 crossrefType "journal-article" @default.
- W1991359341 hasAuthorship W1991359341A5005267966 @default.
- W1991359341 hasAuthorship W1991359341A5013397353 @default.
- W1991359341 hasAuthorship W1991359341A5039749301 @default.
- W1991359341 hasAuthorship W1991359341A5054300757 @default.
- W1991359341 hasAuthorship W1991359341A5090258482 @default.
- W1991359341 hasBestOaLocation W19913593412 @default.
- W1991359341 hasConcept C107872376 @default.
- W1991359341 hasConcept C127313418 @default.
- W1991359341 hasConcept C147455438 @default.
- W1991359341 hasConcept C178790620 @default.
- W1991359341 hasConcept C185592680 @default.
- W1991359341 hasConcept C187320778 @default.
- W1991359341 hasConcept C18903297 @default.
- W1991359341 hasConcept C2776384668 @default.
- W1991359341 hasConcept C2780560099 @default.
- W1991359341 hasConcept C38304854 @default.
- W1991359341 hasConcept C39432304 @default.
- W1991359341 hasConcept C537208039 @default.
- W1991359341 hasConcept C6557445 @default.
- W1991359341 hasConcept C73593433 @default.
- W1991359341 hasConcept C76177295 @default.
- W1991359341 hasConcept C76886044 @default.
- W1991359341 hasConcept C8625798 @default.
- W1991359341 hasConcept C86803240 @default.
- W1991359341 hasConcept C87717796 @default.
- W1991359341 hasConcept C88862950 @default.
- W1991359341 hasConceptScore W1991359341C107872376 @default.
- W1991359341 hasConceptScore W1991359341C127313418 @default.
- W1991359341 hasConceptScore W1991359341C147455438 @default.
- W1991359341 hasConceptScore W1991359341C178790620 @default.
- W1991359341 hasConceptScore W1991359341C185592680 @default.
- W1991359341 hasConceptScore W1991359341C187320778 @default.
- W1991359341 hasConceptScore W1991359341C18903297 @default.
- W1991359341 hasConceptScore W1991359341C2776384668 @default.
- W1991359341 hasConceptScore W1991359341C2780560099 @default.
- W1991359341 hasConceptScore W1991359341C38304854 @default.
- W1991359341 hasConceptScore W1991359341C39432304 @default.
- W1991359341 hasConceptScore W1991359341C537208039 @default.
- W1991359341 hasConceptScore W1991359341C6557445 @default.
- W1991359341 hasConceptScore W1991359341C73593433 @default.
- W1991359341 hasConceptScore W1991359341C76177295 @default.
- W1991359341 hasConceptScore W1991359341C76886044 @default.
- W1991359341 hasConceptScore W1991359341C8625798 @default.
- W1991359341 hasConceptScore W1991359341C86803240 @default.
- W1991359341 hasConceptScore W1991359341C87717796 @default.
- W1991359341 hasConceptScore W1991359341C88862950 @default.