| LIU Weiqiu,ZHANG Jielong,TIAN Guanghong,XU Hualin,YAN Xiaohua.Temporal and vertical distribution of microphytobenthos biomass in mangrove sediments of Zhujiang (Pearl River) Estuary[J].Acta Oceanologica Sinica,2013,32(4):82-88 |
| Temporal and vertical distribution of microphytobenthos biomass in mangrove sediments of Zhujiang (Pearl River) Estuary |
| Temporal and vertical distribution of microphytobenthos biomass in mangrove sediments of Zhujiang (Pearl River) Estuary |
| 投稿时间：2011-12-05 修订日期：2012-11-02 |
| DOI：10.1007/s13131-013-0302-8 |
| 中文关键词: microphytobenthos mangrove biomass chlorophyll a vertical distribution |
| 英文关键词:microphytobenthos mangrove biomass chlorophyll a vertical distribution |
| 基金项目:The National Natural Science Foundation-Joint Founds of Guangdong Province under contract No. U0633002; the National Natural Science Foundation of China (NSFC) under contract No. 31070470; the Project of Science and Technology Bureau of Zhuhai City under contract No. 200901023. |
| 作者 | 单位 | E-mail | | LIU Weiqiu | School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China | liuweiqiu1970@yahoo.com.cn | | ZHANG Jielong | School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China | | | TIAN Guanghong | Management Office of Qi'ao-Dangan Provincial Nature Reserve, Zhuhai 519002, China | | | XU Hualin | Guangdong Neilingding-Futian National Nature Reserve, Shenzhen 518040, China | | | YAN Xiaohua | School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China | |
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| 中文摘要: |
| Being a primary producer, Microphytobenthos (MPB) play an important role in the benthic ecosystem of mangrove swamps. The temporal and vertical distribution of MPB biomass, expressed as chlorophyll a (Chl a), was investigated in mangrove swamps on the Qi'ao island and the Futian Mangrove Nature Reserve, Guangdong Province, South China. Both locations are situated in the Zhujiang (Pearl River) Estuary. For each location, bi-monthly sampling was carried out at four sites during low tide period. Except one site on the Qi'ao Island, which was in Phragmites australis marsh, all sites were in mangrove swamps. The Chl a concentration in surface (0-1 cm) sediment ranged from 0.2 μg/cm3 to 8.3 μg/cm3 in the Qi'ao Island and from 2.1 μg/cm3 to 15.6 μg/cm3 in the Futian Mangrove Reserve. The peak Chl a concentration occurred in winter or early spring, while the lowest Chl a concentration, with a value of about one quarter of the peak, was observed in summer or early autumn. The vertical distribution of Chl a concentration exhibited an exponential decline with depth, which indicated a muddy sediment with high organic matter, and the slope of the curve was positively related to Chl a concentration in the surface sediment. The MPB biomass of the Qi'ao Island was significantly lower than that of the Futian Mangrove Reserve. Our results suggest that the overlaying water quality might influence the MPB biomass in surface sediments. |
| 英文摘要: |
| Being a primary producer, Microphytobenthos (MPB) play an important role in the benthic ecosystem of mangrove swamps. The temporal and vertical distribution of MPB biomass, expressed as chlorophyll a (Chl a), was investigated in mangrove swamps on the Qi'ao island and the Futian Mangrove Nature Reserve, Guangdong Province, South China. Both locations are situated in the Zhujiang (Pearl River) Estuary. For each location, bi-monthly sampling was carried out at four sites during low tide period. Except one site on the Qi'ao Island, which was in Phragmites australis marsh, all sites were in mangrove swamps. The Chl a concentration in surface (0-1 cm) sediment ranged from 0.2 μg/cm3 to 8.3 μg/cm3 in the Qi'ao Island and from 2.1 μg/cm3 to 15.6 μg/cm3 in the Futian Mangrove Reserve. The peak Chl a concentration occurred in winter or early spring, while the lowest Chl a concentration, with a value of about one quarter of the peak, was observed in summer or early autumn. The vertical distribution of Chl a concentration exhibited an exponential decline with depth, which indicated a muddy sediment with high organic matter, and the slope of the curve was positively related to Chl a concentration in the surface sediment. The MPB biomass of the Qi'ao Island was significantly lower than that of the Futian Mangrove Reserve. Our results suggest that the overlaying water quality might influence the MPB biomass in surface sediments. |
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