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The Variability of CDOM Along the Salinity Gradients of the Seomjin River Estuary During Dry and Wet Seasons
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 Title & Authors
The Variability of CDOM Along the Salinity Gradients of the Seomjin River Estuary During Dry and Wet Seasons
Lee, Jae Hwan; Park, Mi Ok;
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 Abstract
The distribution patterns of Chromophoric Dissolved Organic Matter (CDOM) and the chemical characteristics of CDOM in the Seomjin river estuary were investigated in March, June and July 2012 in order to determine the spatial and temporal variability of CDOM along the salinity gradient considering the effects of mixing, nutrients and Chl a. The average CDOM values were , , and in March, June and July, respectively. A high concentration of CDOM (greater than ) was found at the head of the river which decreased towards the river mouth to as low as less than . The average concentrations of CDOM increased from the dry season (March and June) to the wet season (July), and the average slope values (), which were used as indicators of CDOM characteristics and sources, were in the range of . The CDOM and values showed that not only the concentration of CDOM but also the chemical properties of DOM clearly changed between upstream and downstream in the Seomjin river. CDOM and FDOM showed a negative correlation with salinity ( > 0.8), and CDOM was positively correlated with FDOM. Furthermore, the mixing pattern of CDOM was confirmed as conservative for all seasons. The main environmental factors influencing the concentration of CDOM was confirmed as conservative for all seasons. The main environmental factors influencing the concentration of CDOM were salinity (mixing) and water temperature, which meant the dilution of low CDOM seawater, was the controlling factor for the spatial distribution of CDOM. Increases in water temperature seemed to induce the production of CDOM during summer (June and July) through the biological degradation of DOM either by microbial activity or photo-degradation.
 Keywords
CDOM;FDOM;Salinity;Slope;Chlorophyll a;Seomjin river estuary;
 Language
Korean
 Cited by
 References
1.
Blough, N. V. and S. A. Green(1995), Spectroscopic characterization and remote sensing of non-living organic matter, In "The role of Non-living Organic Matter in the Earth's Carbon Cycle" (R. G. Zepp and C. Sonntag, Eds.), Wiley, Chichester, pp. 23-45.

2.
Blough, N. V., O. C. Zafiriou and J. Bonilla(1993), Optical absorption spectra of waters from the Orinoco River outflow: Terrestrial input of colored organic matter to the Caribbean, J. Geophys. Res., Vol. 98, C2, pp. 2271-2278. crossref(new window)

3.
Carder, K. L., R. G. Steward, G. R. Harvey and P. B. Ortner(1989), Marine humic and fulvic acids: Their effects on remote sensing of ocean chlorophyll. Limnol. Oceanogr., Vol. 3, pp. 68-81.

4.
Coble, P. G.(1996), Characterization of marine terrestrial DOM in seawater using excitation-emission matrix spectroscopy, Marine Chemistry, Vol. 51, No. 4, pp. 325-346. crossref(new window)

5.
Granskog, M. A., A. K. Pavlov, S. Sagan, P. Kowalczuk, A. Raczkowska and C. A. Stedmon(2015), Effect of sea-ice melt on inherent optical properties and vertical distribution of solar radiant heating in Arctic surface waters, Journal of Geophysical Research: Oceans, Vol. 120, pp. 7028-7039. crossref(new window)

6.
Green, S. A. and N. V. Blough(1994), Optical absorption and fluorescence properties of chromophoric dissolved organic matter in natural waters, Limnology and Oceanography, Vol. 39, pp. 1903-1916. crossref(new window)

7.
Ha, S. Y., S. W. Kang, M. O. Park, Y. N. Kim, S. H. Kang and K. H. Shin(2010), Photoinduction of UV-absorbing Compounds and Photo-protective Pigment in Phaeocystis pouchetii and Porosira glacialis by UV Exposure, Ocean Polar Research, Vol. 32, No. 4, pp. 397-409. crossref(new window)

8.
Hansell, D. A. and C. A. Carlson(2002), Marine Dissolved Organic Matter, Elsevier Science, pp. 516-543.

9.
Hill, V. J.(2008), Impact of chromatographic dissolved organic material on surface ocean heating in the Chuck Sea, J. Geophys. Res. Oceans, Vol. 113, No. C07024.

10.
Hojerslev, N. K., N. Holt and T. Aarup(1996), Optical measurements in the North Sea-Baltic Sea transition zone. I. On the origin of the deep water in the Kattegat, Cont. Shelf. Res., Vol. 16, No. 10, pp. 1329-1342. crossref(new window)

11.
Kowalczuk, P.(1999), Seasonal variability of yellow substance absorption in the surafce layer of the Baltic Sea, J. Geophys. Res. Ocean, Vol. 104, No. C12, pp. 169-217.

12.
Kwon, K. Y., C. H. Moon and H. S. Yang(2001), Behavior of Nutrients along the Salinity Gradients in the Seomjin River Estuary, J. Korean Fish. Soc, Vol. 34, No. 3, pp. 199-206.

13.
McKnight, D. M. and G. R. Aiken(1998), Sources and age of aquatic humus, In: Hessen, Tranvik (Eds.), Ecological Studies: Aquatic Humic Substances, Springer-Verlag, Heidelberg, Vol. 133, pp. 9-39.

14.
McCallister, S. L., J. E. Bauer, H. W. Ducklow and E. A. Canuel(2006), Source of estuarine dissolved and particulate organic matter: A multi tracer approach, Org. Geochem, Vol. 37, pp. 454-468. crossref(new window)

15.
Moran, M. A., W. M. Sheldon and R. G. Zepp(2000), Carbon loss and optical property changes during long-term photochemical and biological degradation of estuarine dissolved organic matter, Limnol. Oceanogr, Vol. 45, pp. 1254-1264. crossref(new window)

16.
Nelson, J. R. and S. Guarda(1995) Particulate and dissolved spectral absorption on the continental shelf of the southeastern United States, J. Geophys. Res., Vol. 100, pp. 8715-8732. crossref(new window)

17.
Nieke, B., R. Reuter, R. Heuermann, H. Wang, M. Babin and J. C. Therriault(1997), Light absorption and fluorescence properties of chromophoric dissolved organic matter (CDOM) in the St. Lawrence estuary (Case 2 waters), Continental Shelf Research, Vol. 17, pp. 235-252. crossref(new window)

18.
Pavlov, A. K., C. A. Stedmon, A. V. Semushin, T. Martma, B. V. Ivanov, P. Kowalczuk and M. A. Granskog(2016), Linkages between the circulation and distribution of dissolved organic matter in the White Sea, Arctic Ocean. Continental Shelf Research, Vol. 119, p. 13.

19.
Rochelle-Newall, E. J. and T. R. Fisher(2002), Production of chromophoric dissolved organic matter fluorescence in marine and estuarine environments: an investigation into the role of phytoplankton, Mar. Chem, Vol. 77, pp. 7-21. crossref(new window)

20.
Stedmon, C. A., R. M. W. Amon, A. J. Rinehart and S. A. Walker(2011), The supply and characteristics of colored dissolved organic matter (CDOM) in the Arctic Ocean: Pan Arctic trends and differences Marine Chemistry, Vol. 124, No. 1, pp. 108-118. crossref(new window)