Seasonal variation in the community and size structure of nano- and microzooplankton in Gyeonggi Bay, Yellow Sea
- Authors
- Yang, Eun Jin; Choi, Joong Ki; Hyun, Jung-Ho
- Issue Date
- Apr-2008
- Publisher
- Academic Press
- Keywords
- size-fractionated phytoplankton; heterotrophic nanoflagellates; ciliates; heterotrophic dinoflagellates; copepod nauplii; nano-and microzooplankton; Yellow Sea
- Citation
- Estuarine, Coastal and Shelf Science, v.77, no.3, pp.320 - 330
- Indexed
- SCIE
SCOPUS
- Journal Title
- Estuarine, Coastal and Shelf Science
- Volume
- 77
- Number
- 3
- Start Page
- 320
- End Page
- 330
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/42540
- DOI
- 10.1016/j.ecss.2007.09.034
- ISSN
- 0272-7714
- Abstract
- To investigate the seasonal variation and community structure of nano- and microzooplankton in Gyeonggi Bay of the Yellow Sea, the abundance and carbon biomass of nano- and microzooplankton were evaluated at 10-day intervals from January 1997 to December 1999. Four major groups of nano- and microzooplankton communities were classified: heterotrophic ciliates, heterotrophic dinoflagellates (HDF), heterotrophic nanoflagellates (HNF), and copepod nauplii. The total carbon biomass of nano- and microzooplankton ranged from 10.2 to 169.8 mu g CL-1 and was highest during or after phytoplankton blooms. Nano- and microzooplankton communities were composed of heterotrophic ciliates (7.4-81.4%; average 41.7% of total biomass), HDF (0.1-70.3%; average 26.1% of total biomass), copepod nauplii (1,6-70.6%; average 20.7% of total biomass), and HNF (0.8-59.5%; average 11.5% of total biomass). The relative contribution of individual components in the nano- and microzooplankton communities appeared to differ by seasons. Ciliates accounted for the most major component of nano- and microzooplankton communities, except during summer and phytoplankton blooming seasons, whereas HDF were more dominant during the phytoplankton blooming seasons. The abundance and biomass of nano- and microzooplankton generally followed the seasonal dynamics of phytoplankton. The size and community distribution of nano- and microzooplankton was positively correlated with size-fractionated phytoplankton. The carbon requirement of microzooplankton ranged from 60 to 83% of daily primary production, and was relatively high when phytoplankton biomass was high. Therefore, our result suggests that the seasonal variation in the community and size composition of nano- and microzooplankton appears to be primarily governed by phytoplankton size and concentration as a food source, and their abundance may greatly affect trophic dynamics by controlling the seasonal abundance of phytoplankton. (C) 2007 Elsevier Ltd. All rights reserved.
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