Preliminary Study of Microzooplankton Grazing and Community Composition in the North of South China Sea in Autumn.

Microzooplankton community composition in the north of South China Sea was investigated during autumn (between September and October), 2004. Dilution technique using chlorophyll a (Chl a) was employed to estimate grazing rates and grazing pressure. The results showed that Polymenophorea Oligotrichida was the dominant group with 16 species, and there were 4 species in Oligotrichina and 11 species in Tintinnina. The ciliates abundance ranged from 9 to 102 ind/m3. Instantaneous growth rates of phytoplankton (k) varied from 0.03 / d to 2.13 / d. Grazing rates of microzooplankton(g) ranged between 0.01 / d and 1.06 / d. The grazing pressure on initial phytoplankton stock (Pi) and primary production (Pp) was 0.089 % - 65.23 % and 33.63 % - 86.04 %, respectively. The grazing of microzooplankton was mainly limited by ciliates abundance. Results of grazing pressure on primary production indicated that microzooplankton played an improtant role in transmitting primary production in the north of South China Sea.

Bibliographic Details

Main Authors:	Su, Qiang, Huang, Liangmin, Tan, Yehui, Xu, Runlin, Li, Tao, Xu, Zhanzhou, Zhang, Janlin, Qiu, Dajun
Format:	Journal Contribution biblioteca
Language:	English
Published:	2007
Subjects:	Grazing, Community composition, Dilution,
Online Access:	http://hdl.handle.net/1834/5862
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