Li Yunkai was supported by the National Natural Science Foundation of China (No.41206124);Ph.D.Programs Foundation of Ministry of Education of China (No.201 23104120001);the ‘Chen Guang’ Project of Shanghai Municipal Education Commission (No.D8004-10-0206);the Shanghai Education Development Foundation (No.B-8102-10-0084);Zhu Jiangfeng and Dai Xiaojie were supported by the National Natural Science Foundation of China (No.41106118);the Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture, China
As apex predators, sharks are of ecological and conservation importance in marine ecosystems. In this study, trophic positions of sharks were estimated using stable isotope ratios of carbon and nitrogen for five repre...