Characteristics of Large-Scale Harmful Algal Blooms (HABs) in the Yangtze River Estuary and the Adjacent East China Sea (ECS) from 2000 to 2010
Li Shen, Huiping Xu, Xulin Guo, Meng Li
DOI: 10.4236/jep.2011.210148   PDF    HTML     5,720 Downloads   10,364 Views   Citations


Harmful algal blooms (HABs) are a serious worldwide issue which has posed great risks on marine ecosystems and public health by directly releasing toxins or indirectly leading to anoxia in marine environment. In recent years HABs have caused huge economic losses in China, particularly in the Yangtze Estuary and the adjacent East China Sea (ECS). The present study investigated the spatial-temporal and species characteristics of large-scale HABs in this area using geographic information system (GIS) Kernel Density Estimation (KDE) spatial analysis, statistical methods and satellite image interpretation. Results revealed that the Yangtze Estuary, Zhoushan island, Xiangshan bay and Jiushan island are the regions with highest frequency of large-scale HABs. HABs in the ECS reached a peak in terms of total number and area in 2003 to 2005 and occupied a high percentage (around 70% in area and 60% in occurrence) in the four Chinese coastal waters. The number of large-scale HABs (> 1000 km2) in the Yangtze Estuary and the adjacent ECS declined after 2005 while that of HABs (> 100 km2) declined after 2008. Large-scale HABs occurrences concentrated in summer (May to July), and the averaged duration increased continually from the shortest time (1.3 days) in 2001 to the longest (10.9 days) in 2010 for each HAB. 17 causative species were found with Prorocentrum dentutam as the most frequent dominant species, followed by Skeletonema costatum, Karenia mikimotoi, and Chaetoceros curvisetus. Water discoloration observed in MODIS satellite true color images was well consistent with the corresponding HABs reported by State Oceanic Administration of China (SOA). Multiple factors involving eutrophication, physical dynamics, topography and deposition conditions contributed to the formation of frequent HABs in the ECS. Three strategies including establishing a synthesized system, improving the previous database and investigating multiple contributors were proposed for future HABs monitoring and management.

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L. Shen, H. Xu, X. Guo and M. Li, "Characteristics of Large-Scale Harmful Algal Blooms (HABs) in the Yangtze River Estuary and the Adjacent East China Sea (ECS) from 2000 to 2010," Journal of Environmental Protection, Vol. 2 No. 10, 2011, pp. 1285-1294. doi: 10.4236/jep.2011.210148.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] D. M. Anderson, “Turning Back the Harmful Red Tide,” Nature, Vol. 388, 1997, pp. 513-514. doi:10.1038/41415
[2] J. H. Wang and J. Y. Wu, “Occurrence and Potential Risks of Harmful Algal Blooms in the East China Sea,” Science of the Total Environment, Vol. 407, No. 13, 2009, pp. 4012-4021. doi:10.1016/j.scitotenv.2009.02.040
[3] D. M. Anderson, P. M. Glibert and J. M. Burkholder, “Harmful Algal Blooms and Eutrophication: Nutrient Sour- ces, Composition, and Consequences,” Estuaries, Vol. 25, No. 4b, 2002, pp. 704-726. doi:10.1007/BF02804901
[4] D. M. Anderson, “Approaches to Monitoring, Control and Management of Harmful Algal Blooms (HABs),” Ocean and Coastal Management, Vol. 52, No. 7, 2009, pp. 342- 347. doi:10.1016/j.ocecoaman.2009.04.006
[5] D. M. Anderson, “Toxic Algal Blooms and Red Tides: A Global Perspective,” In: T. Okaichi, D. M. Anderson and T. Nemoto, Eds., Red Tides: Biology Environmental Sci- ence and Toxicology, Elsevier, New York, 1989, pp. 11- 16.
[6] D. L. Tang, D. R. Kester, I-H. Ni, et al., “In Situ and satEllite Observations of a Harmful Algal Bloom and Wa- ter Condition at the Pearl River Estuary in Late Autumn 1998,” Harmful Algae, Vol. 2, No. 2, 2003, pp. 89-99. doi:10.1016/S1568-9883(03)00021-0
[7] D. L. Tang, B. P. Di, G. F. Wei, et al., “Spatial, Seasonal and Species Variations of Harmful Algal Blooms in the South Yellow Sea and East China Sea,” Hydrobiologia, Vol. 568, No. 1, 2006, pp. 245-253. doi:10.1007/s10750-006-0108-1
[8] L. Shen, H. P. Xu and P. Wu, “Marine Environmental Characteristics of the Yangtze River Estuary and the Ad- jacent East China Sea during Algal Blooms,” Marine En- vironmental Science, Vol. 29, 2010, pp. 631-635.
[9] G. F. Wei, D. L. Tang, and S. F. Wang, “Distribution of Chlorophyll and Harmful Algal Blooms (HABs): A Re- view on Space Based Studies in the Coastal Environments of Chinese Marginal Seas,” Advances in Space Research, Vol. 41, No. 1, 2008, pp. 12-19. doi:10.1016/j.asr.2007.01.037
[10] C. S. Chen, J. R. Zhu, R. C. Beardsley, et al., “Physical- Biological Sources for Dense Algal Blooms near the Chang- Jiang River,” Geophysical Research Letters, Vol. 30, No. 10, 2003, pp. 22-25. doi:10.1029/2002GL016391
[11] J. M. Zhou, Z. L. Shen and R. C. Yu, “Responses of a Coastal Phytoplankton Community to Increased Nutrient Input from the Changjiang (Yangtze) River,” Continental Shelf Research, Vol. 28, No. 12, 2008, pp. 1483-1489. doi:10.1016/j.csr.2007.02.009
[12] SOA (the State Oceanic Administration of China), “The China Marine Environmental Quality Bulletin,” 2000-2010a.
[13] SOA (The State Oceanic Administration of China), “The China Marine Disasters Bulletin,” 2000-2010b.
[14] SOA (The State Oceanic Administration of China), “The Shanghai Marine Environmental Quality Bulletin,” 2000- 2010c.
[15] SOA (the State Oceanic Administration of China), “Tech- nical Specification of Algal Harmful Blooms,” HY/T069- 2005, 2005
[16] A. C. Gatrell, T. C. Bailey, P. J. Diggle, et al., “Spatial Points Pattern Analysis and Its Application Geographical Epidemiology,” Transactions of the Institute of British Geo- graphers, Vol. 21, No. 1, 1996, pp. 256-274. doi:10.2307/622936
[17] R. P. Stumpf and M. C. Tomlinson, “Remote Sensing of Harmful Algal Blooms,” In: R. L. Miller, C. E. Del Castillo and B. A. McKee, Eds., Remote Sensing of Coastal Aquatic Environments, Springer, AH Dordrecht, 2005, pp. 277-296. doi:10.1007/978-1-4020-3100-7_12
[18] I. V. Telesh, “Plankton of the Baltic Estuarine Ecosys- tems with Emphasis on Neva Estuary: A Review of Pre- sent Knowledge and Research Perspectives,” Marine Po- llution Bulletin, Vol. 49, No. 2, 2004, pp. 206-219. doi:10.1016/j.marpolbul.2004.02.009
[19] J. H. Wang, “HAB Alga nearby Yangtze Estuary,” Ma- rine Environmental Science, Vol. 21, 2002, pp. 38-41.
[20] X. Gao and J. Song, “Phytoplankton Distributions and Their Relationship with the Environment in the Chang- jiang Estuary, China,” Marine Pollution Bulletin, Vol. 50, No. 3, 2005, pp. 327-335. doi:10.1016/j.marpolbul.2004.11.004
[21] J. K. Egge, “Are Diatoms Poor Competitors at Low Phosphate Concentrations?” Journal of Marine Systems, Vol. 16, No. 3-4, 1998, pp. 191-198. doi:10.1016/S0924-7963(97)00113-9
[22] S. F. Ye, H. H. Ji, L. Cao, et al., “Red Tides in the Yangtze River Estuary and Adjacent Sea Areas: Causes and Mitigation,” Marine Science, Vol. 28, 2004, pp. 26-32.
[23] Y. L. L. Chen, H. Y. Chen, G. C. Gong, et al., “Phyto- plankton Production during a Summer Coastal Upwelling in the East China Sea,” Continental Shelf Research, Vol. 24, No. 12, 2004, pp. 1321-1338. doi:10.1016/j.csr.2004.04.002
[24] D. L. Tang, I.-H. Ni, F. E. Müller-Karger, et al., “Ana- lysis of Annual and Spatial Patterns of CZCS-Derived Pigment Concentrations on the Continental Shelf of Chi- na,” Continental Shelf Research, Vol. 18, 1998, pp. 1493- 1515. doi:10.1016/S0278-4343(98)00039-9
[25] T. Z. Yan, “Primary Classification of Causes for Coastal Upwelling Currents in China,” Marine Bulletin, Vol. 10, 1991, pp. 1-6.
[26] T. Z. Yan, “Analysis of Causes of Coastal Upwelling Cu- rrents in Zhejiang and Qiongdong,” Acta Oceanologica Sinica, Vol. 14, 1992, pp. 12-18.
[27] Z. M. Niu, “Preliminary Study of Deposition Effects of the Yangtze Estuary Delta,” Marine Geology and Quaternary Geology, Vol. 3, 1983, pp. 1-15.
[28] T. H. Fang, “Phosphorus Speciation and Budget of the East China Sea,” Continental Shelf Research, Vol. 24, No. 12, 2004, pp. 1285-1299. doi:10.1016/j.csr.2004.04.003

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