A preliminary study on benthos food web structure of tidal zone in the Laoshan Bay by using stable carbon isotopes

摘要

By analyses of carbon isotopic composition (δ~13 C values)of the benthos collected in the Laoshan Bay in August 1993 and February and May 1994, it is found that the main food sources of the Benthos can be divided into four groups in terms of carbon isotope composition: Particulate Organic Mat- Ter (POM), benthic diatoms, benthic macroalgae and the organic matter in sediments. The results show That the carbon isotopic composition of the benthic animals has a close relation with that of the food they Take in. The carbon isotopic compositions of benthos may be useful in elucidating their food sources.