文献类型：期刊文献

英文题名：Unravelling Nutrients and Carbon Interactions in an Urban Coastal Water during Algal Bloom Period in Zhanjiang Bay, China

作者：Zhang, Jibiao[1];Fu, Miaojian[1];Zhang, Peng[1,2];Sun, Dong[1,2];Peng, Demeng[1]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Res Ctr Coastal Environm Protect & Ecol Resilience, Zhanjiang 524088, Peoples R China

年份：2023

卷号：15

期号：5

外文期刊名：WATER

收录：SCI-EXPANDED(收录号：WOS:000947437800001)、、EI(收录号：20231113731526)、Scopus(收录号：2-s2.0-85149893289)、WOS

基金：This research was funded by the Guangdong Basic and Applied Basic Research Foundation (2020A1515110483), Guangdong Basic and Applied Basic Research Foundation (2023A1515012769), Research and Development Projects in Key Areas of Guangdong Province (2020B1111020004), Guangdong Ocean University Fund Project (R18021); Science and Technology Special Project of Zhanjiang City (2019B01081); Innovation Strong School Project (230420021) of Guangdong Ocean University for funding.

语种：英文

外文关键词：nutrients; carbon; speciation; algal bloom; eutrophication; coastal water

外文摘要：Nutrients and carbon play important roles in algal bloom and development. However, nutrients and carbon interactions in the period of the spring algal bloom are not well understood. The aim of this study is to explore the nutrients and carbon interactions in the period of the spring algal bloom covering an urban Jinsha Bay (JSB) coastal water in Zhanjiang Bay (South China Sea) using in situ multidiscipline observation. The results showed that the average concentration of total nitrogen (TN), total phosphorus (TP), and dissolved silicon (DSi) was 97.79 +/- 26.31 mu mol/L, 12.84 +/- 4.48 mu mol/L, and 16.29 +/- 4.00 mu mol/L in coastal water, respectively. Moreover, the average concentration of total dissolved carbon (TDC), dissolved inorganic carbon (DIC) and organic carbon (DOC) in JSB was 2187.43 +/- 195.92 mu mol/L, 1516.25 +/- 133.24 mu mol/L, and 671.13 +/- 150.81 mu mol/L, respectively. Furthermore, the main dominant species were Phaeocystis globosa and Nitzschia closterium during the spring algal bloom. Additionally, the correlation analysis showed salinity (S) was significantly negatively correlated with nutrients, indicating that nutrients derived from land-based sources sustained spring algal bloom development. However, as the major fraction of TDC, DIC was significantly positively correlated with S, which was mainly derived from marine sources. Besides, the algal density showed a significant positive correlation with temperature (T) (p < 0.001) and dissolved oxygen (DO) (p < 0.001), but a significant negative correlation with DIC (p < 0.05), suggesting that spring algal blooms may be simulated by water T increase, and then large amounts of DIC and nutrients were adsorbed, accompanying DO release through photosynthesis in coastal water. This study revealed nutrients and carbon interactions in the spring algal bloom of urban eutrophic coastal water, which has implications for understanding the nutrients and carbon biogeochemical cycle and algal bloom mitigation under climate change and anthropogenic pressures in the future.