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Identification and stable isotope analyses of flying fish scales from ornithogenic sediments at three islands in the South China Sea

文献类型： 外文期刊

作者： Wu, Libin 1 ; Liu, Xiaodong 1 ; Fu, Pingqing 3 ; Xu, Liqiang 4 ; Wang, Xueying 1 ; Sun, Yao; Li, Yeling 1 ;

作者机构： 1.Univ Sci & Technol China, Inst Polar Environm, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China

2.Univ Sci & Technol China, Anhui Prov Key Lab Polar Environm & Global Change, Hefei 230026, Anhui, Peoples R China

3.Chinese Acad Sci, Inst Atmospher Phys, LAPC, Beijing 100029, Peoples R China

4.Hefei Univ Technol, Sch Resources & Environm Engn, Hef

关键词： delta C-13;delta N-15;Spawning behavior;Historical data;Suess effect

期刊名称：MARINE ECOLOGY PROGRESS SERIES （ 影响因子：2.824； 五年影响因子：3.09 ）

ISSN： 0171-8630

年卷期： 2017 年 585 卷

页码：

收录情况： SCI

摘要： Flying fish scales were recovered from ornithogenic sediments at 3 coral islands in Qilian Yu, Xisha Islands, South China Sea, and identified based on species-specific morphological structures. Stable isotope analyses indicated insignificant changes in the ratio of C-13 to C-12 (delta C-13) and the ratio of N-15 to N-14 (delta N-15) in scales dating from the period similar to 1000 to 1850 AD, reflecting the stability of avian community structures and feeding habits of tropical seabirds on Qilian Yu where they have consistently preyed on flying fish. Compared with data from modern flying fish samples, we found d15N did not change, while d13C declined by about 1.9% from historical times to the present, but this change can be associated with the Suess effect (decrease of atmospheric delta C-13 caused by fossil-fuel burning). A strong negative correlation was found between delta C-13 and delta N-15 in the historical flying fish scales, which was attributed to the natural spawning behavior of the fish, i.e. adult fish move to inshore areas to spawn; the weak positive correlation previously observed in modern samples is a result of larger sampling areas and possible human disturbances.

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[1]Study on the feeding habits of fishery organisms in the Yangtze River estuary and the southern Yellow Sea in spring with delta C-13 method. Li, Zhongyi,Zhuang, Zhimeng,Dai, Fangqun,Jin, Xianshi. 2011

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