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Microbes and nutrient shift in a Closed Aquatic Ecosystem (CAES) during four weeks of operation.
Gu, Peifan; Zhang, Xianyuan; Chen, Anji; Tian, Qing; Zhang, Jing; Li, Tao; Li, Xiaoyan; Wang, Gaohong.
Afiliación
  • Gu P; Key Laboratory for Algae Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China.
  • Zhang X; Key Laboratory for Algae Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China.
  • Chen A; Wuhan Britain-China School, Wuhan 430030, China.
  • Tian Q; Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
  • Zhang J; Key Laboratory for Algae Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
  • Li T; Key Laboratory for Algae Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
  • Li X; Key Laboratory for Algae Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. Electronic address: lixiaoyan@ihb.ac.cn.
  • Wang G; Key Laboratory for Algae Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: space@ihb.ac.cn.
Life Sci Space Res (Amst) ; 42: 91-98, 2024 Aug.
Article en En | MEDLINE | ID: mdl-39067997
ABSTRACT
A Closed Aquatic Ecosystem (CAES) housed an aquatic plant Ceratophyllum demersum, zebrafish (Danio rerio), and microbes that were simultaneously obtained with the zebrafish, and it was used to study the operation of the ecosystem. The results indicated that the CAES can operate steadily for about 4 weeks. The dissolved oxygen (DO), pH, and conductivity values of the ecosystem regularly oscillated, while the total nitrogen of the water decreased and the total phosphate slightly increased. Additionally, the chemical oxygen demand (COD, a measure of organic compounds) of the water after the experiment increased to 39 times more than that of the water before the experiment. The meta-genomic data showed that the number of genera decreased by 38 % and the top 10 most abundant genera were almost completely different before and after the experiment, which demonstrated a great shift in the microbes during the operation process. These results suggested that although the CAES operated steadily during the 28-day experiment, there were more organic materials and less nitrogen in the water by the end of the experiment, which may have influenced the structure and operation of the ecosystem. Thus, it is necessary to remove superfluous plant biomass from the CAES and supply nitrogen to keep the ecosystem stable.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pez Cebra / Sistemas Ecológicos Cerrados / Nitrógeno Límite: Animals Idioma: En Revista: Life Sci Space Res (Amst) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pez Cebra / Sistemas Ecológicos Cerrados / Nitrógeno Límite: Animals Idioma: En Revista: Life Sci Space Res (Amst) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos