Impacts of algal blooms on sinking carbon flux and hypoxia off the Changjiang River estuary
文献类型：CNKI期刊论文
| 作者 | Zhao LI; Yingxin ZHANG; Shuqun SONG; Caiwen LI
|
| 发表日期 | 2023-11-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | phytoplankton community structure algal blooms carbon flux hypoxia |
| 英文摘要 | Based on 10 multidisciplinary investigations conducted from February 2015 to January 2016,the phytoplankton community and its association with ambient seawater physicochemical parameters in the Changjiang(Yangtze) River estuary(CE) and its adjacent waters were comprehensively examined. In total, 265 taxa were identified, belonging to 5 phyla and 94 genera. Diatoms(63.78%) and dinoflagellates(33.21%) were the dominant groups. The variation of diatom abundance showed a positive relationship with the nutrient concentrations while the dinoflagellate abundance showed a negative relationship. Two algal bloom events occurred during the investigation period. The Changjiang Diluted Water(CDW)induced environmental gradients in the upper layer, favoring the diatom bloom in July. The invasion of the nearshore Kuroshio branch current could affect the formation of a bloom of Prorocentrum donghaiense. With the blooming and senescence of phytoplankton, low dissolved oxygen(DO) and hypoxia occurred in the bottom waters. The bottom DO concentration displayed a significantly negative correlation with phytoplankton carbon flux. The present study provides straightforward evidence for the source of organic matter for oxygen consumption in the CE and its adjacent waters. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Science&Technology Basic Resources Investigation Program(No.2018FY100200) ; the National Natural Science Foundation of China (Nos.41976136,41606128) ; the NSFC-Shandong Joint Research Fund(No.U1706218) ; the Science Foundation of Shandong Jianzhu University (No.XNBS1937) ; the Young Visiting Scholar Program of Shandong Province ; the Introduction and Cultivation Plan for Young Innovative Talents of Colleges and Universities by the Education Department of Shandong Province |
| 卷 | v.41期:06页:150-166 |
| 语种 | 英文; |
| 分类号 | X55;X173 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/186962]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.MarineEcologyandEnvironmentalScienceLaboratory,LaoshanLaboratory 2.SchoolofMunicipalandEnvironmentalEngineering,ShandongJianzhuUniversity 3.CASKeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 4.UniversityofChineseAcademyofSciences 5.CenterforOceanMega-Science,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Zhao LI,Yingxin ZHANG,Shuqun SONG,et al. Impacts of algal blooms on sinking carbon flux and hypoxia off the Changjiang River estuary. 2023. |
入库方式： OAI收割
来源：海洋研究所
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