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通过对 1 993年 8月和 1 994年 2和 5月在崂山湾潮间带采集的底栖生物碳稳定同位素组成 (δ13C值 )的分析 ,发现该区底栖动物的主要食物来源以δ13C值大致可划分为 4类 :水体中的颗粒有机质 (POM )、底栖硅藻、大型底栖藻类和底泥中的有机物质 (SOM ) .研究结果表明 ,底栖动物的碳稳定同位素组成与其所摄食的食物的碳稳定同位素组成有密切的关系 ,因此 ,底栖动物的碳稳定同位素组成可以用于研究其食物来源 .碳稳定同位素数据证实 ,双壳类等滤食性动物的食物来源主要是POM ;甲壳动物的δ13C值的范围较大 ,证明其食物来源的多样性 ;底栖硅藻是多数腹足类食物来源的相当重要组成部分 .用碳稳定同位素示踪剂对该区底栖 -水体耦合作用的初步研究表明 ,水体中的POM是底栖动物的重要食物来源 ,但底泥中有机质和底栖硅藻也是许多底栖动物食物来源的相当重要的组成部分 .
By analyzing the stable carbon isotope composition (δ13C value) of benthic organisms collected in the intertidal zone of Laoshan Bay from August 1993 to February and May 1994, it was found that the main source of food for zoobenthos in this area is δ13C It can be divided into four groups: particulate organic matter (POM), benthic diatoms, large benthic algae and sediment organic matter (SOM) in water.The results show that the carbon stable isotopic composition of benthic fauna and its Therefore, the carbon stable isotopic composition of zoobenthos may be used to study the food source of carbon stable isotopes.Carbon stable isotope data confirm that the food source of filter-feeders such as bivalves is mainly POM ; The δ13C value of crustaceans is relatively large, which proves the diversity of food sources. Benthic diatoms are the most important part of the source of most gastropods. Using carbon stable isotope tracer, Preliminary studies of coupling have shown that POM in water is an important source of food for zoobenthos, but the sediment organic matter and benthic diatoms are also important sources of food for many zoobenthos Into parts.