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http://dx.doi.org/10.7846/JKOSMEE.2017.20.1.1

The Characteristics of Spatio-temporal Distribution on Environmental Factors After Construction of Artificial Structure in the Nakdong River Estuary  

Yoon, Sang Chol (Oceanic Climate & Ecology Research Division, NIFS)
Youn, Suk Hyun (Oceanic Climate & Ecology Research Division, NIFS)
Suh, Young Sang (Oceanic Climate & Ecology Research Division, NIFS)
Publication Information
Journal of the Korean Society for Marine Environment & Energy / v.20, no.1, 2017 , pp. 1-11 More about this Journal
Abstract
Nakdong River Estuary is affected by the dam, barrage construction and dredge and reclaim worked artificially. So, we have studied the area input both freshwater and sea water to understand marine environment of Nakdong River estuary related to the effect of artificial work from 2013 to 2015. As a result, The discharge flow to the estuary remarkably decreased before barrage construction and the average of salinity at the estuary increased. So, the brackish water zone reduced under the influence of decreased discharge flow. The major sources of nitrate and silicate were freshwater, phosphate supplied from bottom and the open sea water. The concentration of phosphate and dissolved oxygen (DO) decreased remarkably in spring and summer. we investigated that phosphate in freshwater was removed under the influence of the estuary dam and phosphate in sea water was removed under the influence of phytoplankton. The low concentration of DO was due to decomposition of the organic compound by microorganism after phytoplankton blooms. Generally, the concentrations of chlorophyll-a in summer was higher than spring and fall. Therefore, the change of ecosystem in Nakdong river estuary was due to decrease of freshwater influx, the other change is facing because of the barrage.
Keywords
Nakdong river estuary; Estuary dam; Barrage; Nutrients; Chlorophyll-a;
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1 Chen, C.-C., Gong, G.-C. and Shiah, F.-K., 2007, "Hypoxia in the East China Sea: One of the largest coastal low-oxygen areas in the world", Mar. Environ. Res., Vol. 64, 399-408.   DOI
2 Chen, C.T.A., 2000, "The Three Gorges Dam: Reducing the upwelling and thus productivity in the East China Sea", Geophysical Res. Lett., Vol. 27, No. 3, 381-383.   DOI
3 Cho, K.-J. and Shin, J.-G., 1995, "Distribution and variation of chlorophyll-a from midstream to downstream of the Naktong river", Kor. J. Lim., Vol. 28, No. 4, 421-426.
4 Cho, K.-J. and Shin, J.-G., 1997, "Dynamics of inorganic N.P nutrient from midstream to downstream of the Naktong river", Kor. J. Lim., Vol. 30, No. 2, 85-95.
5 Cho, K.-J. and Shin, J.-G., 1998, "Dynamics of inorganic N.P nutrient and planktonic algae during summer and winter in downstream of the Naktong river", Kor. J. Lim., Vol. 31, No. 1, 67-75.
6 Choe, S. and Chung, T.W., 1972, "Nutrients and suspended organic particulates in the estuary of Nak-Dong river", J. Oceanolog. Soc. Kor., Vol. 7, No. 1, 1-14.
7 Chung, I.K., Kang, Y.J., Kwon, O-S. and Seo, J.K., 2000, "The ecology of phytoplankton in the Nakdong estuary", Algae, Vol. 15, No. 2, 99-110.
8 Chung, M.H. and Youn, S.-H., 2013, "Temporal and spatial variability of phytoplankton communities in the Nakdong river estuary and coastal area, 2011-2012", The Sea, Vol. 18, No. 4, 214- 226.   DOI
9 Domingues, R.B., Barbosa, A. and Galvao, H., 2005, "Nutrients, light and phytoplankton succession in a temperate estuary (the Guadiana, south-western Iberia)", Estuar. Coast. Shelf Sci., Vol. 64, 249-260.   DOI
10 Domingues, R.B., Barbosa, A.B, and Galvao, H.M., 2014, "River damming leads to decreased phytoplankton biomass and disappearance of cyanobacteria blooms", Estuarine, Coastal and Shelf Science, Vol. 136, 129-138.   DOI
11 Humborg, C., Ittekkot, V., Cociasu, A. and Bodungen, B.V., 1997, "Effect of Danube River dam on Black Sea biogeochemistry and ecosystem structure", Nature, 386, 385-388.   DOI
12 Jang, S.-T. and Kim, K.-C., 2006, "Change of oceanographic environment in the Nakdong Estuary", The Sea, Vol. 11, No. 1, 11-20.
13 Kim, I.-B., 1970, "Fundamental studies of the lower part of the NakTong river for fisheries exploitation", Bull. Kor. Fish. Soc., Vol. 3, No. 1, 65-70.
14 Jennerjahn, T.C. and Mitchell, S.B., 2013, "Pressures, stresses, shocks and trends in estuarine ecosystems-An introduction and synthesis", Estuarine, Coastal and Shelf Science, Vol. 130, 1-8.   DOI
15 Kim, J.G., You, S.-J. and Kwon, J.-N., 1998, "Variations of water quality after construction of Keum river estuary barrage", J. Kor. Fish. Soc., Vol. 31, No. 5, 685-694.
16 Kim, K.C., Kim, J.J., Kim, Y.E. and Han, K.M., 1996, "Outflow characteristics of Nakdong river plume", J. Kor. Soc. Coastal and Ocean Engineers, Vol. 8. No. 4, 305-313.
17 Kim, S.H., Yoon, I.-K., Song, S.J., Kim, Y.E. and Kwon, O-S., 1996, "Environmental factors and benthic microbial distributions in the sediments of Naktong river estuary", Kor. J. Lim., Vol. 29, No. 3, 205-214.
18 Kim, W-J. and Lee, H.-J., 1998, "The environmental factors and distribution of microorganisms of Naktong river estuary", Kor. J. Limnol., Vol. 31, No. 1, 25-31.
19 Kim, Y.-G., Shin, H.-K., Cho, H.-R. and You, S.-J., 1984, "Seasonal variations of water quality in the lower part of the Nagdong river", Bull. Kor. Fish. Soc., Vol. 17, No. 6, 511-522.
20 Kwon, J.-N., Shim, J.H., Lee, S.Y. and Cho, J.D., 2013, "Effects of meteorological and oceanographic properties on variability of laver production at Nakdong river estuary, south coast of Korea", Kor. J. Fish. Aquat. Sci., Vol. 46, No. 6, 868-877.   DOI
21 Lee, J.Y., Kwon, J.N. and An, S.M., 2012, "Seasonal variation of nitrogen loads and nitrogen cycling at tidal flat sediments in Nakdong river estuary", The Sea, Vol. 17, No. 2, 120-129.   DOI
22 Moon, C.-H. and Kwon, K.-Y., 1994, "Seasonal variations of particulate biogenic silica in the Nakdong river estuary", J. Kor. Soc., Vol. 29, No. 1, 5-16.
23 Liu, M., Xiao, T., Wu, Y., Zhou, F., Huang, H., Bao, S. and Zhang, W., 2012, "Temporal distribution of bacterial community structure in the Changjiang estuary hypoxia area and the adjacent East China Sea", Environ. Res. Lett., Vol. 7, No. 2, 025001.   DOI
24 MOF, 2013, "Guideline to standard methods for the marine environment", Ministry of Government Legislation, p. 516.
25 Moon, C.-H. and Choi, H.-J., 1991, "Studies on the environmental characteristics and phytoplankton community in the Nakdong river estuary", J. Oceanolog. Soc. Kor., Vol. 26, No. 2, 144-154.
26 Morris, A.W., Bale, A.J. and Howland, R.J.M., 1981, "Nutrient distributions in an estuary: Evidence of chemical precipitation of dissolved silicate and phosphae", Estuar. Coast. Shelf Sci., Vol. 12, 205-216.   DOI
27 Ning, X., Lin, C., Su, J., Liu, C. and Hao, Q., 2011, "Long-term changes of dissolved oxygen, hypoxia, and the responses of the ecosystems in the East China sea from 1975 to 1995", J. Oceanogr., Vol. 67, 59-75.   DOI
28 Shin, Y.S. and Yoon, B.B., 2011, "Change in taxonomic composition of phytoplankton and environmental factors after construction of dike in Yeongsan river estuary", Kor. J. Environ. Biol., Vol. 29, No. 3, 212-224.
29 Sin, Y.S., Lee, C.H., Cho, K.A. and Song, E.S., 2005, "Trends of phytoplankton community and water quality and implications for management in estuarine river system", Kor. J. Lim., Vol. 38, No. 2, 160-180.
30 Turner, R.E., Rabalais, N.N., Swenson, E.M., Kasprzak, M. and Romaire, T., 2005, "Summer hypoxia in the northern gulf of Mexico and its prediction from 1978 to 1995", Mar. Environ. Res., Vol. 59, 65-77.   DOI
31 Yoon, I.B., Bae, K.-S. and Kong, D.-S., 1987, "A study on the physiochemical factors and macrozoobenthos community structure in Naktong estuary", Kor. J. Lim. Vol. 20, No. 2, 73-99.
32 Yang, J.-W., Lee, S.-M. and Park, C.-K., 1990a, "Settling characteristics of phosphorus in Nakdong estuary barrage", Bull. Korean Fish. Soc., Vol. 23, No. 3, 185-191.
33 Yang, J.-W., Song, K.-O. and Lee, S.-M., 1990b, "Release characteristics of phosphorus in Nakdong estuary barrage", Bull. Kor. Fish. Soc., Vol. 23, No. 3, 192-197.
34 Yang, S.R., Song, H.S., Moon, C.-H., Kwon, K.-Y. and Yang, H.-S., 2001, "Changes in marine environment and primary production due to freshwater input in the Nakdong estuary", Algae, Vol. 16, No. 2, 165-177.
35 Zhu, Z.-Y., Zhang, J., Wu, Y., Zhang, Y.-Y., Lin, J. and Liu, S.-M., 2011, "Hypoxia off the Chanjiang(Yangtze river) estuary: Oxygen depletion and organic matter decomposition", Mar. Chem., Vol. 125, 108-116.   DOI
36 Shin, S.-K., Park, C.-K. and Song, K.-O., 1998, "Evaluation of water quality using principal component analysis in the Nakdong river estuary", J. Kor. Environ. Sci. Soci., Vol. 7, No. 2, 171-176.