| XU Henglong,WARREN Alan,AL-RASHEID Khaled A S,ZHU Mingzhuang,SONG Weibo. 2010. Planktonic protist communities in semi-enclosed mariculture waters: temporal dynamics of functional groups and their responses to environmental conditions. Acta Oceanologica Sinica, (4):106－115 |
| Planktonic protist communities in semi-enclosed mariculture waters: temporal dynamics of functional groups and their responses to environmental conditions |
| Planktonic protist communities in semi-enclosed mariculture waters: temporal dynamics of functional groups and their responses to environmental conditions |
| Received:November 05, 2008 Revised:November 02, 2009 |
| DOI：10.1007/s13131-010-0054-7 |
| Key words:environmental stress planktonic protists functional group microbial ecology marimculture |
| 中文关键词: environmental stress planktonic protists functional group microbial ecology marimculture |
| 基金项目:The National Natural Science Foundation of China under contract Nos 40676076 and 30700069; the Darwin Initiative Programme under contract No. 14-015; a grant from the Center of Excellence in Biodiversity Research, King Saud University. |
| Author Name | Affiliation | E-mail | | XU Henglong | Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China | | | WARREN Alan | Department of Zoology, Natural History Museum, Cromwell Rd, London, UK | | | AL-RASHEID Khaled A S | Zoology Department, King Saud University, Riyadh 11451, Saudi Arabia | | | ZHU Mingzhuang | Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China | | | SONG Weibo | Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China | wsong@ouc.edu.cn |
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| Abstract: |
| The functional groups of planktonic protist communities and their responses to the changes of environmental conditions were investigated in a semi-enclosed shrimp-farming pond in Qingdao, Shandong Province, China, during a six-month study period (a complete shrimp-culture cycle) from May to October 2002. The results reveal that:(1) the protist communities represented five trophic and functional groups of the species identified, about 60% were photoautotrophs, 20% algivores, 12% bacterivores, 5% raptors and about 3% non-selectives; (2) the photoautotrophs, algivores and bacterivores were the primary contributors to the changes in the protist communities in short temporal scales, the succession of dominance typically being bacterivores→photoautotrophs→algivores, with the raptors dominating the protist communities in a single sample (early June); (3) the photoautotrophs and non-selectives were the primary contributors to the peak of protist abundance in early October whereas the photoautotrophs, bacterivores, raptors and non-selectives mainly gave rise to two bimodal peaks of biomass in July and October respectively; (4) five functional groups of protist communities represented significant correlations with water nutrients (i.e., NH3-N, NO3-N, and PO4), either alone or in combination with temperature, of which algivores and raptors were strongly correlated with phosphate and the concentration of Chl a, while bacterivores were strongly related to nitrogen and the concentration of bacteria. These findings confirm that planktonic protists are potentially useful bioindicators of water quality in the semi-enclosed mariculture system. |
| 中文摘要: |
| The functional groups of planktonic protist communities and their responses to the changes of environmental conditions were investigated in a semi-enclosed shrimp-farming pond in Qingdao, Shandong Province, China, during a six-month study period (a complete shrimp-culture cycle) from May to October 2002. The results reveal that:(1) the protist communities represented five trophic and functional groups of the species identified, about 60% were photoautotrophs, 20% algivores, 12% bacterivores, 5% raptors and about 3% non-selectives; (2) the photoautotrophs, algivores and bacterivores were the primary contributors to the changes in the protist communities in short temporal scales, the succession of dominance typically being bacterivores→photoautotrophs→algivores, with the raptors dominating the protist communities in a single sample (early June); (3) the photoautotrophs and non-selectives were the primary contributors to the peak of protist abundance in early October whereas the photoautotrophs, bacterivores, raptors and non-selectives mainly gave rise to two bimodal peaks of biomass in July and October respectively; (4) five functional groups of protist communities represented significant correlations with water nutrients (i.e., NH3-N, NO3-N, and PO4), either alone or in combination with temperature, of which algivores and raptors were strongly correlated with phosphate and the concentration of Chl a, while bacterivores were strongly related to nitrogen and the concentration of bacteria. These findings confirm that planktonic protists are potentially useful bioindicators of water quality in the semi-enclosed mariculture system. |
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