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Sediment Denitrific...
Sediment Denitrification in Two Contrasting Tropical Shallow Lagoons
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- Enrich Prast, Alex (författare)
- Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten,University of Federal Rio de Janeiro, Brazil
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- Lucia Santoro, Ana (författare)
- University of Federal Rio de Janeiro, Brazil
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- Coutinho, Rodrigo S. (författare)
- University of Federal Rio de Janeiro, Brazil
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- Peter Nielsen, Lars (författare)
- University of Aarhus, Denmark
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- Esteves, Francisco A. (författare)
- University of Federal Rio de Janeiro, Brazil
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(creator_code:org_t)
- 2015-08-12
- 2016
- Engelska.
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Ingår i: Estuaries and Coasts. - : SPRINGER. - 1559-2723 .- 1559-2731. ; 39:3, s. 657-663
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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http://liu.diva-port...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Sediment denitrification was monthly evaluated in two tropical coastal lagoons with different trophic states using the N-15 isotope pairing technique. Denitrification rates were very low in both environments, always < 5.0 mu mol N-2 m(-2) h(-1) and were not significantly different between them. Oxygen consumption varied from 426 to 4248 mu mol O-2 m(-2) h(-1) and was generally three times higher in the meso-eutrophic than the oligotrophic lagoon. The low denitrification activity was ascribed to both low water NO3- concentrations (< 2.0 mu M) and little nitrate supply from nitrification. There was no correlation of denitrification with nitrate or ammonium fluxes. Sediments in temperate environments with similar oxygen consumption rates usually presented a higher proportion of nitrification-denitrification rates. Sediment oxygen consumption was a good predictor of sediment denitrification in both studied lagoons.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Nitrogen; Denitrification; Oxygen consumption; Sediment; Tropical; Coastal lagoons
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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