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Fig. 4.
The horizontal distributions of (a) phenolic concentrations and (b) phenolic concentrations per unit of carbon in surface water from Osaka Bay. Samples were collected in September, 2010 (○), and in June, 2011 (■).
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Fig. 5.
Salinity dependences of (a) DOC, (b) phenolic concentrations per unit of carbon, and (c) phenolic concentrations in Osaka Bay. The lines in AZD2281 figure represent the predicted lines based on the river water–seawater end-member conservative mixing model. The lines calculated by the equations in the text indicate the conservative mixing of two end-members, the marine DOC and riverine DOC. Details are platelets in the text.
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The predicted lines for DOC well demonstrate the salinity dependence of DOC in Osaka Bay, indicating the conservative mixing of DOM between freshwater and seawater. Mishima et al. (1999) also reported conservative mixing of riverine DOM from the Yodo River in Osaka Bay. For phenolic concentrations, the results found for Osaka Bay were located below the conservative mixing lines predicted by Eqs. (1), (2), (3) and (4). This might result from “net loss” of the phenolic moieties in the DOM.