Investigation of the decline of Ulva prolifera in the Subei Shoal and Qingdao based on physiological changes

作     者：Ya HAO Chen GUAN Xinyu ZHAO Tongfei QU Xuexi TANG Ying WANG Ya HAO;Chen GUAN;Xinyu ZHAO;Tongfei QU;Xuexi TANG;Ying WANG

作者机构：College of Marine Life SciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Ecology and Environmental ScienceQingdao National Laboratory for Marine Science and TechnologyQingdao 266071China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2021年第39卷第3期

页      面：918-927页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：Supported by the National Key R&D Program of China(No.2016YFC1402102) the National Natural Science Foundation of China(Nos.41706121,41976132) the NSFC-Shandong Joint Fund(Nos.U1806213,U1606404) the Fundamental Research Funds for the Central Universities(Nos.201513046,201964025) 

主　　题：Ulva prolifera green tide decline process photoinhibition lipid peroxidation 

摘      要：It has been a scientific consensus that Ulva prolifera green tide that break out annually between May and August in the recent decade off eastern coast of Yellow *** investigate the ecological mechanism of the decline of *** green tide,we compared the physiological characteristics of *** samples collected in three stages of the green tide in Subei Shoal north Jiangsu,the initiation point,on May 10(early,the initiation),July 10(middle,the outbreak),and in Taipingjiao,Qingdao on August 10(late,the decline).Compared to the early samples,the middle,and late samples showed a lower chlorophyll content and photosynthetic e fficiency at a higher lipid peroxidation *** middle and later samples had fewer chloroplasts in the cells of *** than those in the early *** addition,the cells of *** sampled in the late stage showed ruptured and deformed cell *** in physiological function were reflected in the growth *** the middle and late *** samples presented negative growth *** analysis results show that the rising temperature was mainly responsible for the local decline of *** green *** high light-intensity that could induce the photoinhibition was also an important factor for the ***,*** population that remained in the Subei Shoal and those that northward drifted to Qingdao experienced the same decline processes:rising temperature and continuous high light conditions in the late phase of green tide reduced the photosynthetic capacity and destroyed the antioxidant system of the thallus,which lead to decrease of *** only difference is that the temperature in the Subei Shoal rose earlier than that in Qingdao;thus,*** remaining in the Subei Shoal went disappeared first.