共 18 条
Stable isotope variations in particulate organic matter and a planktivorous fish in the Yangtze River
被引:19
作者:
Zhang, Liang
Xu, Jun
Xie, Ping
[1
]
Zang, Xiaoping
Qiu, Guangsheng
Zeng, Jinfeng
机构:
[1] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] Yangtze Valley Water Environm Monitoring Ctr, Wuhan 430010, Peoples R China
关键词:
TROPHIC POSITION;
CARBON;
NITROGEN;
LAKE;
INDICATORS;
SESTON;
D O I:
10.1080/02705060.2007.9664167
中图分类号:
Q14 [生态学(生物生态学)];
学科分类号:
071012 ;
0713 ;
摘要:
Temporal and spatial changes in delta(13) C and delta 15 N of particulate organic matter (POM) and Hemiculter leucisculus were studied in the Yangtze River of China. Isotopic signatures of POM showed seasonal variations, which was assumed to be associated with allochthonous organic input and autochthonous phytoplankton growth. delta C-13 of H. leucisculus was 1.1 % higher than that of POM, which suggested that the food source of H. leucisculus was mostly from the POM. A mass balance model indicated the trophic position of H. leucisculus in the food web of Yangtze River was estimated to be 2.0 - 2.1, indicating that this fish mainly feeds on planktonic organic matter, which agreed with previous gut content analysis.
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页码:383 / 386
页数:4
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