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http://dx.doi.org/10.5657/kfas.2003.36.5.515

Interrelation Between Water Quality and Community Structure of Phytoplankton around the Season of Red Tide Outbreak off the Coast of Tongyeong Area, 2002  

KANG Yang Soon (Aquaculture and Environment Institute, NFRDI)
KWON Jung No (Aquaculture and Environment Institute, NFRDI)
SHON Jae Kyoung (Aquaculture and Environment Institute, NFRDI)
JEONG Chang Su (Aquaculture and Environment Institute, NFRDI)
HONG S. Jin (Aquaculture and Environment Institute, NFRDI)
KONG Jai Yul (Faculty of Food Science and Biotechnology, Pukyong National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.36, no.5, 2003 , pp. 515-521 More about this Journal
Abstract
To understand interrelations between water quality and community structure of phytoplankton around the season of red tide outbreak, field surveys were conducted 10 times off the coast of Tongyeong from July to September in 2002. Because of heavy rain for 10 days, environmental conditions were changed and differed from the previous year, sustaining high nutrients and low salinity. During the surveyed period 48 species of 29 genera of phytoplankton were identified, and diatom and dinoflagellate was $51.8\%\;and\;38.0\%,$ respectively, At the time of bloom, cell counts of C. polykrikoides were outstanding but the number of species remarkably decreased. There were striking differences in dominant species among research stations before the bloom. Diatoms were the most dominant group in the whole study area in that period. Diversity and evenness index were highest just before outbreak of the red tides (2 Aug, 2002). During the bloom (4 Aug.), it decreased to the lowest value and then began to increase slowly. The result of PCA on water quality vs phytoplankton biomass showed that the land loads of nutrient may be the main cause of summer rally of phytoplankton biomass.
Keywords
Cochlodinium polykrikoides; Diversity and evenness index; Tongyeong; PCA;
Citations & Related Records
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