文献类型：期刊文献

英文题名：Coastal currents regulate the distribution of the particulate organic matter in western Guangdong offshore waters as evidenced by carbon and nitrogen isotopes

作者：Chen, Fajin[1,2];Lu, Xuan[1,2];Song, Zhiguang[2];Huang, Chao[1];Jin, Guangzhe[1];Chen, Chunqing[1];Zhou, Xin[1,2];Lao, Qibin[3];Zhu, Qingmei[1,2]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Coll Chem & Environm, Zhanjiang 524088, Peoples R China;[3]State Ocean Adm, Marine Environm Monitoring Ctr Beihai, Beihai 266031, Peoples R China

年份：2021

卷号：172

外文期刊名：MARINE POLLUTION BULLETIN

收录：SCI-EXPANDED(收录号：WOS:000701679700011)、、EI(收录号：20213410813678)、Scopus(收录号：2-s2.0-85113742603)、WOS

基金：This work was supported by National Natural Science Foundation of China (U1901213) , Guangdong Natural Science Foundation of China (2019B1515120066, 2016A030312004) , Project of Enhancing School with Innovation of Guangdong Ocean University (GDOU2016050260) .

语种：英文

外文关键词：Particulate organic matter; Stable isotopes; Offshore waters; Coastal currents; Western Guangdong Province

外文摘要：The 813C, 815N and C/N ratio of the particulate organic matter (POM) in western Guangdong waters were determined to evaluate the impacts of the coastal currents on the POM in spring and summer. The predominance of photosynthetic organic matter in the nearshore was triggered by nutrients brought by the coastal currents in spring and summer, while the proportion of terrestrial organic matter in the offshore was very high in spring but low in summer. In spring, the weaker and narrower coastal currents carried insufficient nutrients (phosphate deficiency) to the offshore and prohibited phytoplankton production. This scenario contributes to the dominance of terrestrial organic matter transported by the cyclonic circulation beyond the coastal currents in the offshore in spring. The Bayesian mixing model reveals that the proportion of terrestrial organic matter (with 75.8% of C3 plants) in the offshore was higher in spring than in summer (with 33.7% of C3 plants).