文献类型：期刊文献

英文题名：Multiple Factors Driving Carbonate System in Subtropical Coral Community Environments along Dapeng Peninsula, South China Sea

作者：Yang, Bo[1,2];Zhang, Zhuo[3];Cui, Zhouping[1];Xie, Ziqiang[1];Chen, Bogui[1];Zheng, Huina[1,4];Liao, Baolin[1];Zhou, Jin[2];Xiao, Baohua[1,3]

机构：[1]Guangdong Ocean Univ, Shenzhen Inst, Binhai 2 Rd, Shenzhen 518120, Peoples R China;[2]Tsinghua Univ, Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China;[3]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Coll Food Sci & Technol, Zhanjiang 524088, Peoples R China

年份：2023

卷号：14

期号：4

外文期刊名：ATMOSPHERE

收录：SCI-EXPANDED(收录号：WOS:000979390800001)、、EI(收录号：20231914061573)、Scopus(收录号：2-s2.0-85156260367)、WOS

基金：This work was financially supported by the Sustainable Development Project of Shenzhen (KCXFZ20211020165547011), General Project of China Postdoctoral Fund (2022M721792), Shenzhen Science and Technology R&D Fund (JCYJ20200109144803833), Guangdong Key Area R & D Program Project (2020B1111030002), Guangdong Basic and Applied Basic Research Foundation (2022A1515110345) and Guangdong Basic and Applied Basic Research Foundation (2023A1515012204).

语种：英文

外文关键词：coral community environment; carbonate system; coral metabolism; photosynthesis; microbial respiration

外文摘要：Coral reef ecosystems have extremely high primary productivity and play an important role in the marine carbon cycle. However, due to the high carbon metabolism efficiency of coral communities, little is known about the carbon sink-source properties of coral reefs. In November 2022, in situ field investigations coupled with incubation experiments were conducted in typical subtropical coral reef waters, i.e., Yangmeikeng Sea Area (Area I) and Dalu Bay (Area II), to explore the dynamics of the carbonate system and its controlling factors. The results revealed that the carbonate parameters had high variability, comprehensively forced by various physical and biochemical processes. Overall, Areas I and II were net sinks of atmospheric CO2, with net uptake fluxes of 1.66 +/- 0.40 and 0.99 +/- 0.08 mmol C m(-2) day(-1), respectively. The aragonite saturation state (omega(A)), 3.04-3.87, was within the range adequate for growth of tropical shallow-water scleractinian corals. Inorganic carbon budget results indicated that photosynthesis and microbial respiration were the main factors affecting the dynamics of carbonate systems in the whole study area. However, focusing on the reef areas, coral metabolism was also a key factor affecting the carbonate system in seawater (especially in Area I) and its contribution accounted for 28.9-153.3% of the microbial respiration. This study highlighted that metabolism of coral communities could significantly affect the seawater carbonate system, which is of great significance in the context of the current process of ocean acidification.