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题名: Picoplankton dynamics and their trophic roles in the microbial food-web processes in the southern East China Sea upwelling region during summer
作者: Chien Fu Chao
An-Yi Tsai
Gwo-Ching Gong
Kuo-Ping Chiang
Pei-Jung Tsai
贡献者: 國立臺灣海洋大學:海洋環境化學與生態研究所
关键词: East China Sea
日期: 2014-06
上传时间: 2017-02-10T05:49:28Z
出版者: Terrestrial, Atmospheric and Oceanic Sciences
摘要: Abstract: We monitored the abundance and biomass of nanoflagellates and their potential prey, heterotrophic bacteria, and Synechococcus spp. five times during the summers in 2010 and 2011. We used size-fractionation to measure growth and grazing rates of heterotrophic bacteria and Synechococcus spp. Temporal changes in surface water chlorophyll a (Chl a) concentrations during our study were caused by an influx of nutrient-rich water upwelling into the surface water. The bacterial growth rates ranged from 0.01 to 0.08 h-1 and grazing rates from 0 to 0.06 h-1. Bacterial growth rate had a positive relationship with Chl a concentration. Furthermore, growth and grazing rates of Synechococcus spp. ranged from 0.01 to 0.09 and 0 to 0.02 h-1, respectively. During the study period about 68% of the bacterial production and 41% of the Synechococcus spp. production was grazed by nanoflagellates in the southern East China Sea upwelling region, thus, a large fraction of bacterial biomass is transferred to higher trophic levels via nanoflagellate grazing.
關聯: 25(3)
显示于类别:[海洋環境與生態研究所] 期刊論文


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