| 活石（live rock）在珊瑚养殖体系中对NH4+、NO3-的去除作用 |
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| 引用本文： | 李琰,郑新庆,杨小舟,欧丹云,林荣澄,刘昕明.活石（live rock）在珊瑚养殖体系中对NH4+、NO3-的去除作用[J].海洋学报(英文版),2017,36(12):87-94. |
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| 作者姓名： | 李琰 郑新庆 杨小舟 欧丹云 林荣澄 刘昕明 |
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| 作者单位： | 国家海洋局第三海洋研究所, 厦门 福建 361005;厦门大学 环境与生态学院, 厦门 福建 361102,国家海洋局第三海洋研究所, 厦门 福建 361005,国家海洋局第三海洋研究所, 厦门 福建 361005,国家海洋局第三海洋研究所, 厦门 福建 361005,国家海洋局第三海洋研究所, 厦门 福建 361005,广西海洋研究院, 南宁 广西 530022 |
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| 基金项目： | The Regional Demonstration of Marine Economy Innovative Development Project under contract No. 16PZY002SF18; the Xiamen Southern Ocean Research Center Project under contract No. 14CZY037HJ11; the Guangxi Natural Science Foundation under contract No. 2016GXNSFBA380228; the China-ASEAN Maritime Cooperation Fund Project under contract No. HX150702. |
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| 摘 要： | Maintaining stable water quality is one of the key processes for recirculating coral aquaculture. Traditional aquarium systems which mainly utilized a nitrification of nitrifying bacteria attached to the surface of massive artificial filter material are difficult to maintain the oligotrophic conditions necessary for coral aquaculture. This study investigated the removal effects of dissolved inorganic nitrogen(ammonia and nitrate) by live rock(LR), a key component in the "Berlin system" coral aquarium. The expression levels of bacterial functional genes, AOA3,amo A and nos Z, were measured on the exterior and interior of LR. The nitrifying and denitrifying bacterial abundance on LR was quantified and the nitrogen nutrient regulatory effects of LR were evaluated. The results demonstrated that LR mainly removed ammonium(NH_4~+) from the water with a mean efficiency of 0.141 mg/(kg·h), while the removal of nitrate(NO_3~–) was not significant. Bacterial diversity analysis showed that ammonia-oxidizing bacteria(AOB) were the most common bacteria on LR, which accounted for 0.5%–1.4% of the total bacterial population, followed by denitrifying bacteria, which accounted for 0.2% of the total population, and the ammonia-oxidizing archaea(AOA) were the least common type(0.01%). The low abundance of denitrifying bacteria may be responsible for the poor nitrate(NO_3~–) removal of LR. Thus, other biological filtration methods are needed in coral aquaria to control nitrates generated from nitrification or biological metabolism.
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| 关 键 词： | 珊瑚 活石 水质净化 溶解无机氮 去除效率 |
| 收稿时间： | 2016/9/12 0:00:00 |
Effects of live rock on removal of dissolved inorganic nitrogen in coral aquaria |
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| LI Yan,ZHENG Xinqing,YANG Xiaozhou,OU Dangyun,LIN Rongcheng and LIU Xinming.Effects of live rock on removal of dissolved inorganic nitrogen in coral aquaria[J].Acta Oceanologica Sinica,2017,36(12):87-94. |
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| Authors: | LI Yan ZHENG Xinqing YANG Xiaozhou OU Dangyun LIN Rongcheng and LIU Xinming |
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| Institution: | 1.The Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;College of Environment and Ecology, Xiamen University, Xiamen 361102, China2.The Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China3.Guangxi Academy of Oceanography, Nanning 530022, China |
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| Abstract: | Maintaining stable water quality is one of the key processes for recirculating coral aquaculture. Traditional aquarium systems which mainly utilized a nitrification of nitrifying bacteria attached to the surface of massive artificial filter material are difficult to maintain the oligotrophic conditions necessary for coral aquaculture. This study investigated the removal effects of dissolved inorganic nitrogen (ammonia and nitrate) by live rock (LR), a key component in the "Berlin system" coral aquarium. The expression levels of bacterial functional genes, AOA3, amoA and nosZ, were measured on the exterior and interior of LR. The nitrifying and denitrifying bacterial abundance on LR was quantified and the nitrogen nutrient regulatory effects of LR were evaluated. The results demonstrated that LR mainly removed ammonium (NH4+) from the water with a mean efficiency of 0.141 mg/(kg·h), while the removal of nitrate (NO3-) was not significant. Bacterial diversity analysis showed that ammonia-oxidizing bacteria (AOB) were the most common bacteria on LR, which accounted for 0.5%-1.4% of the total bacterial population, followed by denitrifying bacteria, which accounted for 0.2% of the total population, and the ammonia-oxidizing archaea (AOA) were the least common type (<0.01%). The low abundance of denitrifying bacteria may be responsible for the poor nitrate (NO3-) removal of LR. Thus, other biological filtration methods are needed in coral aquaria to control nitrates generated from nitrification or biological metabolism. |
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| Keywords: | coral live rock water purification dissolved inorganic nitrogen removal efficiency |
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