Biophysical processes affecting DOM dynamics at the Arno river mouth (Tyrrhenian Sea)

被引：18

作者：

Brogi, S. Retelletti ^{[1
]}

Gonnelli, M. ^{[1
]}

Vestri, S. ^{[1
]}

Santinelli, C. ^{[1
]}

机构：

[1] CNR, Ist Biofis, Pisa, Italy

来源：

BIOPHYSICAL CHEMISTRY | 2015年 / 197卷

关键词：

CDOM; Fluorescence EEM; Absorption spectroscopy; River; Mineralization rate; DOC; DISSOLVED ORGANIC-MATTER; MEDITERRANEAN SEA; RHONE RIVER; TEMPERATE ESTUARY; CARBON DOC; PO RIVER; COASTAL; FLUORESCENCE; ABSORPTION; MARINE;

D O I：

10.1016/j.bpc.2014.10.004

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Dissolved organic carbon (DOC) and optical properties (absorption and fluorescence) of chromophoric dissolved organic matter (CDOM) were measured in October 2012, at the Arno river mouth and in a coastal station close to it. The data reported indicates that the Arno river represents an important source of DOC and CDOM to this coastal area, with a total DOC flux of 11.23-12.04.10(9) g C.y(-1). Moving from the river to the sea, CDOM absorption and fluorescence decreased, while the spectral slope increased, suggesting a change in the molecular properties of CDOM. Mineralization experiments were carried out in order to investigate the main processes of DOM removal and/or transformation in riverine and coastal water. DOC removal rates were 20 mu M.month(-1) in the river and 3 mu M.month(-1) in the seawater, while CDOM was released during the first 30 days and removed in the following 40 days. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1 / 9

页数：9

共 51 条

[1] Chromophoric dissolved organic matter (CDOM) in the Equatorial Atlantic Ocean: Optical properties and their relation to CDOM structure and source [J].