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Records of bulk organic matter and plant pigments in sediment of the "red-tide zone" adjacent to the Changjiang River estuary
Kang Zhenjun1,2,3; Yu Rencheng1,4; Kong Fanzhou1,4; Wang Yunfeng1,4; Gao Yan1,2; Chen Jianhua1,2; Guo Wei1,2,3; Zhou Mingjiang1
2016-09-01
发表期刊CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号34期号:5页码:915-927
文章类型Article
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 Pb-210 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 delta C-13 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 1970s 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 alpha, beta-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.
关键词Eutrophication Harmful Algal Bloom Hypoxia Pigment Sediment Core Changjiang River Estuary
DOI10.1007/s00343-016-4313-0
收录类别SCI
语种英语
WOS记录号WOS:000379737000004
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文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/130945
专题海洋生态与环境科学重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Qinzhou Univ, Qinzhou 535099, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
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Kang Zhenjun,Yu Rencheng,Kong Fanzhou,et al. Records of bulk organic matter and plant pigments in sediment of the "red-tide zone" adjacent to the Changjiang River estuary[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2016,34(5):915-927.
APA Kang Zhenjun.,Yu Rencheng.,Kong Fanzhou.,Wang Yunfeng.,Gao Yan.,...&Zhou Mingjiang.(2016).Records of bulk organic matter and plant pigments in sediment of the "red-tide zone" adjacent to the Changjiang River estuary.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,34(5),915-927.
MLA Kang Zhenjun,et al."Records of bulk organic matter and plant pigments in sediment of the "red-tide zone" adjacent to the Changjiang River estuary".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 34.5(2016):915-927.
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