High-temperature thermal discharge inhibits plankton community metabolism in a partly eutrophicated bay in China
文献类型： 外文期刊
作者： Liu, Huaxue 1 ; Li, Jiajun 1 ; Wang, Huijuan 1 ; Huang, Honghui 1 ; Xie, Fuwu 1 ; Song, Xingyu 2 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Peoples R China
2.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Peoples R China
3.Hainan Ecoenvironm Monitoring Ctr, Haikou, Peoples R China
关键词： plankton community metabolism; thermal discharge; warming; gross primary production; community respiration
期刊名称：FRONTIERS IN MARINE SCIENCE （ 2022影响因子：3.7； 五年影响因子：4.7 ）
年卷期： 2023 年 9 卷
收录情况： SCI
摘要： Managing the marine ecosystem effectively requires studying the response of plankton community metabolism to warming. Moreover, warming caused by thermal discharge is known to significantly raise the water temperatures in the nuclear power plants. However, effects of thermal discharge on planktonic community metabolic characteristics, especially net community production, in surrounding waters remain poorly understood. Therefore, in this study, we aimed to analyze the characteristics of plankton community metabolism in thermal discharge area of the Daya Bay, China. The investigations were conducted in August 2016 and January 2017. Our results showed that the plankton community metabolism was promoted in moderately warm regions (29.4-30 degrees C), with higher gross primary production and community respiration than in high- and extremely high-temperature regions; meanwhile, plankton community metabolism was evidently inhibited in high (31.4 degrees C in winter) or extremely high (36 degrees C in summer) temperature regions, thereby exhibiting heterotrophic metabolism state. Our findings indicate that warming could affect plankton community carbon metabolism in the Daya Bay, thereby declining the stability of the marine ecosystem.
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