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Circulation and horizontal fluxes in the northern Adriatic Sea in the period June 1999July 2002. Part II: Nutrients transport (Articolo in rivista)
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- Label
- Circulation and horizontal fluxes in the northern Adriatic Sea in the period June 1999July 2002. Part II: Nutrients transport (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.scitotenv.2005.09.011 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Grilli F. (1); Marini M. (1); Degobbis D. (2); Ferrari C.R. (3); Fornasiero P. (1); Russo A. (4); Gismondi M. (3); Djakovac T. (2); Precali R. (2); Simonetti R. (4) (literal)
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- ISI Web of Science (WOS) (literal)
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- (1) CNR, Institute of Marine Sciences, Section of Ancona, L.go Fiera della Pesca, 1, 60135 Ancona, Italy;
(2) Rudjer Boskovic Institute, Center for Marine Research (CMR), G. Paliaga 5, 52210 Rovinj, Croatia;
(3) Regional Agency for Environmental Protection (ARPAER), Daphne Oceanographic Unit, Viale Vespucci, 2, 47042 Cesenatico, Italy;
(4) Department of Marine Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy (literal)
- Titolo
- Circulation and horizontal fluxes in the northern Adriatic Sea in the period June 1999July 2002. Part II: Nutrients transport (literal)
- Abstract
- Nutrient concentrations (orthophosphate, orthosilicate and dissolved inorganic nitrogenDIN) were measured on three transects in the northern Adriatic approximately monthly in the period June 1999July 2002. The net nutrient transports across the three transects were estimated from these concentration values and calculated water fluxes [Grilli F, Paschini E, Russo A, Precali R, Supiæ N. Circulation and horizontal fluxes in the Northern Adriatic Sea in the period June 1999_July 2002. Part I: geostrophic circulation and current measurement. Sci Total Environ 2005this issue], with the aim to verify their possible role in the mucilage phenomenon. The nutrient transports in the northern Adriatic were very variable, seasonally and from year to year, both in intensity and direction. Some differences were noticed also among the nutrient species. At the northernmost transect Po DeltaRovinj minimal values and variable directions were recorded, probably due to the prevailing of eastward transversal transports, observed already in late winter, and generally dominant in spring and summer. Northward transport was often measured at the central transect CesenaticoCape Kamenjak, particularly in spring 2000 and 2002, and summer 2001, as well as for only DIN in summer 1999. In contrast, southward directions prevailed at the southernmost transect SenigalliaSusak Island. In October significant southward transports occurred at all transects and for all nutrients, particularly strong in 2000, when exceptionally high Po River discharges occurred, and the Western Adriatic Current (WAC) was well developed. However, the nutrient transports in the upper water column were low or northwards at both transect CesenaticoCape Kamenjak and SenigalliaSusak Island in June and July 2000, 2001, and 2002, when the mucilage phenomenon developed, but were opposite in 1999, a year without events. The results suggest that high variations of nutrient fluxes and their ratios, in conditions of reduced water dynamics, are essential for the development of the phenomenon, rather than the absolute amounts of the nutrient inputs. (literal)
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