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题名: Possible nutrient limiting factor in long term operation of closed aquatic ecosystem
作者: Hao, Zongjie1, 2; Li, Yanhui2, 3; Cai, Wenkai1, 2; Wu, Peipei1, 2; Liu, Yongding1; Wang, Gaohong1
通讯作者: Liu, YD (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
关键词: Closed aquatic ecosystem ; Nutrient limiting factor ; Chlorella pyrenoidosa and Chlamydomonas reinhardtii ; Daphnia magna ; Soluble carbohydrate ; Total phosphorus
刊名: ADVANCES IN SPACE RESEARCH
发表日期: 2012-03-01
DOI: 10.1016/j.asr.2011.11.030
卷: 49, 期:5, 页:841-849
收录类别: SCI
文章类型: Article
部门归属: [Hao, Zongjie; Cai, Wenkai; Wu, Peipei; Liu, Yongding; Wang, Gaohong] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Hao, Zongjie; Li, Yanhui; Cai, Wenkai; Wu, Peipei] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; [Li, Yanhui] Taiyuan Normal Univ, Dept Biol, Taiyuan 030031, Peoples R China
WOS标题词: Science & Technology ; Physical Sciences
资助者: Project of Chinese Manned Spaceflight; Natural Science Foundation of China[30970688]
类目[WOS]: Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
研究领域[WOS]: Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
摘要: To investigate nutrient limitation effect on the community metabolism of closed aquatic ecosystem and possible nutrient limiting factors in the experimental food chains, depletion of inorganic chemicals including carbon, nitrogen and phosphorous was tested. A closed aquatic ecosystem lab module consisting of Chlorella pyrenoidosa and Chlamydomonas reinhardtii, Daphnia magna and associated unidentified microbes was established. Closed ecological systems receive no carbon dioxide; therefore, we presumed carbon as a first limiting factor. The results showed that the algae population in the nutrient saturated group was statistically higher than that in the nutrient limited groups, and that the chlorophyll a content of algae in the phosphorus limited group was the highest among the limited groups. However, the nitrogen limited group supported the most Daphnia, followed by the carbon limited group, the nutrient saturated group and the phosphorus limited group. Redundancy analysis showed that the total phosphorus contents were correlated significantly with the population of algae, and that the amount of soluble carbohydrate as feedback of nutrient depletion was correlated with the number of Daphnia. Thus, these findings suggest that phosphorus is the limiting factor in the operation of closed aquatic ecosystem. The results presented herein have important indications for the future construction of long term closed ecological system. (C) 2011 COSPAR. Published by Elsevier Ltd. All rights reserved.
英文摘要: To investigate nutrient limitation effect on the community metabolism of closed aquatic ecosystem and possible nutrient limiting factors in the experimental food chains, depletion of inorganic chemicals including carbon, nitrogen and phosphorous was tested. A closed aquatic ecosystem lab module consisting of Chlorella pyrenoidosa and Chlamydomonas reinhardtii, Daphnia magna and associated unidentified microbes was established. Closed ecological systems receive no carbon dioxide; therefore, we presumed carbon as a first limiting factor. The results showed that the algae population in the nutrient saturated group was statistically higher than that in the nutrient limited groups, and that the chlorophyll a content of algae in the phosphorus limited group was the highest among the limited groups. However, the nitrogen limited group supported the most Daphnia, followed by the carbon limited group, the nutrient saturated group and the phosphorus limited group. Redundancy analysis showed that the total phosphorus contents were correlated significantly with the population of algae, and that the amount of soluble carbohydrate as feedback of nutrient depletion was correlated with the number of Daphnia. Thus, these findings suggest that phosphorus is the limiting factor in the operation of closed aquatic ecosystem. The results presented herein have important indications for the future construction of long term closed ecological system. (C) 2011 COSPAR. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: ECOLOGICAL-SYSTEMS ; FOOD-CHAIN ; DAPHNIA ; DESERT ; CYANOBACTERIA ; LIMITATION ; RADIATION ; STRESS ; SPACE ; LAKE
语种: 英语
WOS记录号: WOS:000301610600003
ISSN号: 0273-1177
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16995
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Taiyuan Normal Univ, Dept Biol, Taiyuan 030031, Peoples R China

Recommended Citation:
Hao, Zongjie; Li, Yanhui; Cai, Wenkai; Wu, Peipei; Liu, Yongding; Wang, Gaohong.Possible nutrient limiting factor in long term operation of closed aquatic ecosystem,ADVANCES IN SPACE RESEARCH,2012,49(5):841-849
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