Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | delta N-15 variation in Ulva lactuca as a proxy for anthropogenic nitrogen inputs in coastal areas of Gulf of Gaeta (Mediterranean Sea) |
| Abstract | We tested the capacity of Ulva lactuca to mark N sources across large marine areas by measuring variation in its delta N-15 at several sites in the Gulf of Gaeta. Comparisons were made with the macroalga Cystoseira amentacea. Variation of delta N-15 values was assessed also in the coastal waters off the Circeo Natural Park, where U. lactuca and C amentacea were harvested, as these waters are barely influenced by human activities and were used as reference site. A small fragment from each frond was preserved before deployment in order to characterize the initial isotopic values. After 48 h of submersion, U. lactuca was more responsive than C amentacea to environmental variation and delta N-15 enrichment in the Gulf of Gaeta was observed. The spatial distribution of delta N-15 enrichment indicated that different macro-areas in the Gulf were affected by N inputs from different origins. Comparison of the delta N-15 values of fragments taken from the same transplanted frond avoided bias arising from natural isotopic variability. (C) 2014 The Authors. Published by Elsevier Ltd. |
| Source | Marine pollution bulletin. 84 (1-2), pp. 76–82 |
| Keywords | Nitrogen stable isotopesUlva lactucaCystoseira amentaceaCoastal seaPollutionGaeta Gulf |
| Journal | Marine pollution bulletin. |
| Editor | Macmillan,, London, Regno Unito |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.marpolbul.2014.05.036 |
| Authors | Orlandi, Lucia; Bentivoglio, Flavia; Carlino, Pasquale; Calizza, Edoardo; Rossi, David; Costantini, Maria Letizia; Rossi, Loreto |
| Text | 339925 2014 10.1016/j.marpolbul.2014.05.036 ISI Web of Science WOS 000338804700022 Nitrogen stable isotopes Ulva lactuca Cystoseira amentacea Coastal sea Pollution Gaeta Gulf delta N 15 variation in Ulva lactuca as a proxy for anthropogenic nitrogen inputs in coastal areas of Gulf of Gaeta Mediterranean Sea Orlandi, Lucia; Bentivoglio, Flavia; Carlino, Pasquale; Calizza, Edoardo; Rossi, David; Costantini, Maria Letizia; Rossi, Loreto Sapienza University of Rome, Department of Environmental Biology, Via dei Sardi 70, 00185 Rome, Italy; CNR IRSA, Water Research Institute, Via Salaria Km 29.300, 00015 Monterotondo, Rome, Italy We tested the capacity of Ulva lactuca to mark N sources across large marine areas by measuring variation in its delta N 15 at several sites in the Gulf of Gaeta. Comparisons were made with the macroalga Cystoseira amentacea. Variation of delta N 15 values was assessed also in the coastal waters off the Circeo Natural Park, where U. lactuca and C amentacea were harvested, as these waters are barely influenced by human activities and were used as reference site. A small fragment from each frond was preserved before deployment in order to characterize the initial isotopic values. After 48 h of submersion, U. lactuca was more responsive than C amentacea to environmental variation and delta N 15 enrichment in the Gulf of Gaeta was observed. The spatial distribution of delta N 15 enrichment indicated that different macro areas in the Gulf were affected by N inputs from different origins. Comparison of the delta N 15 values of fragments taken from the same transplanted frond avoided bias arising from natural isotopic variability. C 2014 The Authors. Published by Elsevier Ltd. 84 Published version Articolo in rivista Macmillan, 0025 326X Marine pollution bulletin. Marine pollution bulletin. Mar. Pollut. Bull. Marine pollution bulletin. david rossi ROSSI DAVID TA.P04.021.009 Trasporto degli inquinanti a scala di bacino e impatto sulle comunita biologiche |