文献类型：期刊文献

英文题名：Effects of Typhoon Mujigae on the Biogeochemistry and Ecology of a Semi-Enclosed Bay in the Northern South China Sea

作者：Zhou, Xin[1];Jin, Guangzhe[2];Li, Jiacheng[2];Song, Zhiguang[1];Zhang, Shuwen[3];Chen, Chunqing[2];Huang, Chao[2];Chen, Fajin[1,2];Zhu, Qingmei[2];Meng, Yafei[2]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm, Zhanjiang, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang, Peoples R China;[3]Shantou Univ, Inst Marine Sci, Shantou, Peoples R China

年份：2021

卷号：126

期号：7

外文期刊名：JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES

收录：SCI-EXPANDED(收录号：WOS:000677821700011)、、Scopus(收录号：2-s2.0-85111433059)、WOS

基金：The authors would like to thank Professor Dongyang Fu for the support in samples collected from the College of Electronics and Information Engineering, Guangdong Ocean University. This study was supported by the National Natural Science Foundation of China (U1901213), Guangdong Natural Science Foundation of China (2019B1515120066, 2016A030312004), the National Key Research and Development Plan (2016YFC1401403), Foundation for Young Talents in General Colleges and Universities of Guangdong, China (2019KQNCX044), and Scientific Research Start-Up Foundation of Shantou University (NTF20006).

语种：英文

外文摘要：Typhoons frequently induce algal blooms in the open ocean based on the satellite remote sensing data. However, the effects of typhoons on nearshore areas are not fully clarified due to the inaccessibility of in situ sampled data and the low accuracy of satellite data in the nearshore areas. To understand the biogeochemical and ecological changes in semi-enclosed bays under the influence of typhoons, physicochemical parameters and isotopic compositions of surface water were measured in Zhanjiang Bay during the super Typhoon Mujigae and nontyphoon periods. The results show that the chlorophyll a (Chl a) concentrations inside and outside the bay during these two periods were considerably different. During typhoon periods, the positive apparent oxygen utilization and unsaturated dissolved oxygen (DO) values suggested significant biological degradation in Zhanjiang Bay, rather than the algal blooms reported by previous studies. In contrast, during nontyphoon periods, particulate organic matter (POM: POC and PN) was mainly generated by in situ phytoplankton production, as indicated by a low POC/Chl a ratio (<99), low C/N ratio, and positive correlations between PN, POC, and Chl a. Isotopic analysis of the particulate N (PN) and nitrate (NO3-) indicated that the N-15-enriched PN in both periods originally came from sewage-dissolved inorganic N. These results suggest that the typhoon-induced decomposition processes, rather than algal blooms, in this semi-enclosed bay in the northern South China Sea, providing new understanding of the impact of the typhoons on marine biogeochemistry and ecology.