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Transactions: WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT
Transactions ID Number: 89-893
Full Name: Luca Marius Meyers
Position: Researcher
Age: ON
Sex: Male
Address: Auf der Lay 34, 56072 Koblenz
Country: GERMANY
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E-mail address: Luca-Meyers@gmx.de
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Title of the Paper: anthropogenic effects in a costal lagoon (south portugal) related to tidal and spatial changes in nutrients
Authors as they appear in the Paper: Luca Meyers, Paulo Pedro, José Beltrão, Christian Gliesche, Lidia Dionisio
Email addresses of all the authors: Luca-Meyers@gmx.de,ppedro@ualg.pt,jbeltrao@ualg.pt,gliesche@uni-greifswald.de,ldionis@ualg.pt
Number of paper pages: 10
Abstract: The distribution of nitrogen compounds during tidal cycles was analyzed in Ria Formosa, a costal lagoon (South of Portugal) during the beginning of the summer season. Results indicate a significant enrichment in organic nitrogen up to 55 µmol L-1 in the studied areas where the anthropogenic effect was high. No significant changes were observed within tidal cycles although that may be related to low water circulation and renewal. High concentration of nitrate in pore water (up to 275 µmol L-1, high amount of ammonia (~1,8 µmol L-1 at high tide) and high concentration of total phosphorus in sediments could be linked to sewage disposal from wastewater treatment plants associated with lower water circulation and renewal in the studied area. The samples were analyzed for Kjeldahl N, nitrate, nitrite, ammonia, phosphate, total phosphorus.
Keywords: Nitrogen, Organic nitrogen, Phosphorus, Lagoon, Coastal, Nutrients, Tidal, Sediments, Eutrophication
EXTENSION of the file: .pdf
Special (Invited) Session: Tidal and spatial changes in nitrogen species in a costal lagoon (South Portugal) related to anthropogenic effects
Organizer of the Session: 633-309
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