Abstract
We recorded NO3-N, NO2-N, NH4-N, PO4-P, SiO3-Si, salinity, and temperature data at 10 stations in the Dongshan Bay in May, June, July, August, October, and November 2008, analyzing nutrient and eutrophication characteristics. The mean concentration of dissolved inorganic nitrogen (DIN) was 0.30–0.40 mg/dm3; generally, NO3-N was the main form in most areas. The mean concentrations of PO4-P and SiO3-Si were 0.040–0.060 mg/dm3 and 1.00–1.50 mg/dm3, respectively. We proved that the majority of the SiO3-Si in the Dongshan Bay came from the Zhangjiang River, with some coming from the Bachimen Strait. DIN originated from both the Zhangjiang River and the Bachimen Strait. Most PO4-P originated from the Bachimen Strait, and some came from the Zhangjiang River. We found that P was an overall limiting factor to the phytoplankton community in most of the Dongshan Bay, and that Si and N were in surplus. However, near the Bachimen Strait Si became a limiting factor, especially for diatoms, while P and N were in comparative surplus. We used a potential eutrophication assessment method to analyze eutrophication, and showed that the most serious eutrophication occurred near the Zhangjiang River estuary and near the Bachimen Strait. In 2008, DIN levels were four times higher than that in 1988; PO4-P levels were threefold higher, while SiO3-Si was approximately double. Dissolved nutrients increased between 1988 and 2008. DIN increased at the greatest rate comparing to PO4-P and SiO3-Si, thus the N/P and N/Si mol ratios increased. Further studies on the effects of high DIN concentrations on the phytoplankton communities and marine ecosystems of the Dongshan Bay are needed.
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References
Bricker S B, Clement C G, Pirhalla D E et al. 1999. National Estuarine Eutrophication Assessment Effects of Nutrients Enrichment in the Nation’s Estuaries. NOAA, National Ocean Service, Special Projects Office and National Centers for Coastal Ocean Science, Silver Spring.
Bricker S B, Ferreira J G, Simas T. 2003. An integrated methodology for assessment of estuarine trophic status. Ecological Modelling, 169: 39–60.
Chen B H, Lin H, Zhang C H et al. 2010. Changing trends of DIN and PO4 -P content in Xiamen Seawaters. Journal of Oceanography in Taiwan Strait, 29(3): 314–319. (in Chinese with English abstract)
Chen B H, Xu Z H, Zhou Q L et al. 2011. Long-term changes of phytoplankton community in Xiagu waters of Xiamen, China. Acta Oceanol ogica Si nica, 29(6): 104–114.
China National Standardization Management Committee. 2007. The Specifi cation of Oceanographic Survey—Part 4: Survey of Chemical Parameters in Sea Water.
Fred T M, Leah M V, Abraham L. 2002. Century-scale nitrogen and phosphorus controls of the carbon cycle. Chemical Geology, 190: 13–32.
Guo W D, Zhang X M, Yang Y P. 1998. Potential eutrophication assessment for Chinese coastal waters. Journal of Oceanography in Taiwan Strait, 17: 64–70. (in Chinese with English abstract)
Hans W P, Valerie J P. 2012. Climate change: links to global expansion of harmful cyanobacteria. Water Research, 46: 1 349–1 363.
Huang X P, Huang L M, Yue W Z. 2003. The characteristics of nutrients and eutrophication in the Pearl River estuary, South China. Marine Pollution Bulletin, 47: 30–36.
Jason B S, Quay D, David M N et al. 2006. Phosphorus limits phytoplankton growth on the Louisiana Shelf during the period of Hypoxia formation. Environ Sci. Technol., 40: 7 548–7 553.
Julio A C, Alvaro A. 2006. Ecological and toxicological effects of DIN pollution in aquatic ecosystem: a global assessment. Environmental International, 32: 831–849.
Li M T, Xu K Q, Watanabe M et al. 2007. Long-term variations in dissolved silicate, nitrogen, and phosphorus flux from the Yangtze River into the East China Sea and impacts on estuarine ecosystem. Estuarine, Coastal and Shelf Science, 71: 3–12.
Li Y Z. 2000. Analysis on the water quality state and the countermeasures for the pollution control in Dongshan Bay of Fujian. Marine Environmental Science, 19(1): 64–67. (in Chinese with English abstract)
Lin F, Xu Q H, Chen W F et al. 1992. The characteristics of distribution of PO4-P in the Dongshan Bay. Journal of Oceanography in Taiwan Strait, 11(4): 316–320. (in Chinese with English abstract)
Lin F, Xu Q H, Huang J H et al. 1993. The characteristics of distribution of SiO3-Si in the Dongshan Bay. Journal of Oceanography in Taiwan Strait, 12(1): 30–34. (in Chinese with English abstract)
Ma Y, Wei W, Xia H Y et al. 2009. History change and infl uence factor of nutrient in Lingdingyang sea area of Zhuajiang River estuary. Acta Oceanologica Sinica, 31(2): 69–77. (in Chinese with English abstract)
Oleg A Y, Jacob C, Snejana M et al. 2007. Nutrients and phytoplankton trends on the western Black Sea shelf in response to cultural eutrophication and climate changes. Estuarine, Coastal and Shelf Science, 74: 63–76.
Paul J T, Ramaiah N, Sardessai S. 2008. Nutrients regimes and their effect on distribution of phytoplankton in the Bay of Bengal. Marine Environmental Research, 66: 337–344.
Redfield A C, Ketchum B H, Richards F A. 1963. The infl uence of organisms on the composition of seawater. In: Hill M N ed. The Sea, Volume 2. Interscience Press. New York, the United States. p.26–77.
Riegman R. 1995. Nutrients-related selection mechanism in marine phytoplankton community and the impact of eutrophication on the planktonic food web. Wat. Sci. Tech., 32(4): 63–75.
Tappin A D. 2002. An examination of the fl uxes of nitrogen and phosphorus in temperate and tropical estuaries: current estimates and uncertainties. Estuarine, Coastal and Shelf Science, 55: 885–901.
Unites States Enviromental Protection Agency. 2005. National Coastal Condition Report II. Washington: USEPA.
Wolfgang L, Egon D, Michel M. 2009. River discharges of water and nutrients to the Mediterranean and Black Sea: major drivers for ecosystem changes during past and future decades? Progress in Oceanography, 80: 199–217.
Wu J Z, Chou T L. 2003. Silicate as the limiting nutrients for phytoplankton in a subtropical eutrophic estuary of Taiwan. Estuarine, Coastal and Shelf Science, 58: 155–162.
Xu Q H, Lin F. 1993. The characteristics of distribution of DIN in the Dongshan Bay. Journal of Oceanography in Taiwan Strait, 12(3): 287–290. (in Chinese with English abstract)
Yang D F, Wang F, Gao Z H et al. 2004. Ecological phenomena of phytoplankton in Jiaozhou Bay. Marine Science, 28(6): 71–74. (in Chinese with English abstract)
Yin K D, Harrison P J. 2008. Nitrogen over eutrophication in subtropical Pearl River estuarine coastal waters: possible causes and consequences. Continental Shelf Research, 28: 1 435–1 442.
Yu T, Meng W, Edwin O et al. 2010. Long-term variations and causal factors in nitrogen and phosphorus transport in the Yellow River, China. Estuarine, Coastal and Shelf Science, 86(3): 345–351.
Zheng B X, Liao K M, Zeng Z et al. 2009. Study on the characteristics of tidal current dynamic in Donshan Bay. Journal of Oceanography in Taiwan Strait, 28(4): 546–552. (in Chinese with English abstract)
Zhou M J, Shen Z L, Yu R C. 2008. Responses of a coastal phytoplankton community to increased nutrients input from the Changjiang (Yangtze) River. Continental Shelf Research, 28: 1 483–1 489.
Zhou S Q, Shen Z L, Li Z et al. 2007. Distribution features of nutrients in the maximum turbid zone of the Chanjiang estuary and its adjacent sea areas. Marine Science, 31(6): 34–42. (in Chinese with English abstract)
Zou J Z, Dong L, Qin B. 1985. Preliminary studies on eutrophication and red tide problems in Bohai Bay. Hydrobiologia, 127: 27–30.
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Supported by the Scientifi c Research Foundation of Third Institute of Oceanography, SOA (No. 20140014), the Natural Science Foundation of Fujian Province (No. 2012Y0048), and the Monitoring, Predicting, Prevention and Mitigation of HABs Hazards (No. HD120201-12)
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Chen, B., Ji, W., Zhou, K. et al. Nutrient and eutrophication characteristics of the Dongshan Bay, South China. Chin. J. Ocean. Limnol. 32, 886–898 (2014). https://doi.org/10.1007/s00343-014-3214-3
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DOI: https://doi.org/10.1007/s00343-014-3214-3