Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Chemical properties and fluorescence of DOM in relation to biodegradation in the interconnected Marmara-North Aegean Seas during August 2008
Δημιουργός/Συγγραφέας:	Zeri C. Beşiktepe T. Giannakourou A. Krasakopoulou E. Tzortziou M. Tsoliakos D. Pavlidou A. [EL] Μούσδης, Γεώργιος Α.[EN] Mousdis, George A. Pitta E. Scoullos M. Papathanassiou E.
Εκδότης:	Elsevier
Ημερομηνία:	2014
Γλώσσα:	Αγγλικά
ISSN:	0924-7963
DOI:	10.1016/j.jmarsys.2013.11.019
Περίληψη:	The dynamics of dissolved organic matter (DOM) in the Marmara Sea-Dardanelles Straits-North Aegean Sea were investigated using measurements of dissolved organic carbon and nitrogen (DOC, DON), PARAFAC modeling of 3-D excitation-emission fluorescence spectra and bacterial production (BP) and respiration (BR) rates. In the surface brackish waters, chemical parameters showed an increase from the Aegean to the Marmara (DOC: 65-217μmolL-1; DON: 3.08-9.34μmolL-1; Dissolved Inorganic Nitrogen (DIN): 0.044-1.38), followed by an increase in BP rates (7.2-195nmolL-1d-1). In the subsurface waters, DIN also showed an increase in the Marmara basin (0.085-9.79μmolL-1) followed by an increase in BP rates (3.3-17.4nmolL-1d-1). PARAFAC modeling revealed three fluorescent components: λex/λem: <260(330)/464nm, humic-like; λex/λem: <(260) 285/364nm, quinone-like; λex/λem: 270/308nm, tyrosine-like. DOC:DON ratios were found similar for the Marmara (21±3) and the N. Aegean Sea (19±2). The slopes δDOC:δDON suggested that in the Marmara Sea mineralization processes require more carbon relative to nitrogen (22.3), whereas in the N. Aegean there is preferential removal of nitrogen over carbon (5.66). The lack of significant correlation between DOC and AOU (apparent oxygen utilization) in the deep Marmara waters indicates that particulate organic matter is important in deep mineralization processes.
Τίτλος πηγής δημοσίευσης:	Journal of Marine Systems
Τόμος/Κεφάλαιο:	135
Σελίδες:	124-136
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	Bacterial production CDOM fluorescence Dissolved organic carbon Dissolved organic nitrogen Mediterranean sea PARAFAC modelling
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2013 Elsevier B.V.
Σημειώσεις:	The present study was conducted within the framework of the European IP Project FP6— Sesame EC Contract No. GOCE-036949 . The collection of data during the NRV Alliance cruise to the area was made possible by the TSS Protocol, including as Participants the NATO Undersea Research Centre (NURC), Turkish Navy Office of Navigation, Hydrography and Oceanography.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο