Records of bulk organic matter and plant pigments in sediment of the “red-tide zone” adjacent to the Changjiang River estuary
文献类型：CNKI期刊论文
| 作者 | Kang ZJ(亢振军); Yu RC(于仁成); Kong FZ(孔凡洲) ; Wang YF(王云峰); Gao Y(高岩); Chen JH(陈建华); Guo W(郭伟); Zhou MJ(周名江)
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| 发表日期 | 2016-09-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
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| 关键词 | eutrophication harmful algal bloom hypoxia pigment sediment core Changjiang River estuary |
| 英文摘要 | Cultural eutrophication caused by nutrient over-enrichment in coastal waters will lead to a cascading set of ecosystem changes and deleterious ecological consequences,such as harmful algal blooms(HABs) and hypoxia.During the past two decades since the late 1990s,recurrent large-scale HABs(red tides)and an extensive hypoxic zone have been reported in the coastal waters adjacent to the Changjiang River estuary.To retrieve the history of eutrophication and its associated ecosystem changes,a sediment core was collected from the "red-tide zone" adjacent to the Changjiang River estuary.The core was dated using the~(210)Pb radioisotope and examined for multiple proxies,including organic carbon(OC),total nitrogen(TN),stable isotopes of C and N,and plant pigments.An apparent up-core increase of OC content was observed after the 1970s,accompanied by a rapid increase of TN.The concurrent enrichment of δ~(13)C and increase of the C/N ratio suggested the accumulation of organic matter derived from marine primary production during this stage.The accumulation of OC after the 1970 s well reflected the significant increase of primary production in the red-tide zone and probably the intensification of hypoxia as well.Plant pigments,including chlorophyll a,p-carotene,and diatoxanthin,showed similar patterns of variation to OC throughout the core,which further confirmed the important contribution of microalgae,particularly diatoms,to the deposited organic matter.Based on the variant profiles of the pigments representative of different microalgal groups,the potential changes of the phytoplankton community since the 1970s were discussed. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Basic Research Program of China(973 Program)(No.2010CB428705) ; the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA11020304) ; the National Natural Science Foundation of China(Nos.41206098,U1406403,41121064) ; the Open Cruise 2009 for Chinese Offshore Oceanography Research by IOCAS |
| 卷 | v.34期:05页:33-45 |
| 语种 | 英文; |
| 分类号 | Q948.8;X55 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189548]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences 3.QinzhouUniversity 4.LaboratoryofMarineEcologyandEnvironmentalScience,QingdaoNationalLaboratoryforMarineScienceandTechnology |
| 推荐引用方式 GB/T 7714 | Kang ZJ,Yu RC,Kong FZ,et al. Records of bulk organic matter and plant pigments in sediment of the “red-tide zone” adjacent to the Changjiang River estuary. 2016. |
入库方式： OAI收割
来源：海洋研究所
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