中文摘要：

稳定的同位素价值，未 1 3C 和未 1 5N，在位于 Hangzhou 的一个小人工的泻湖为四个主要制片人和 19 个主导的消费者被决定海湾。把主要小径基于这些结果因为精力流动和人工的泻湖生态系统的营养的结构被描绘。为 19 个消费者的吝啬的未 1 3C 价值从 ? 22.99 鈥 ? 到 ? 14.24 鈥吗？除了 so-iny 鲻鱼莉莎 haematocheila，另外的 18 个消费者有 epibenthic microalgae 和微粒有机物(POM ) 的在那些之间的中间的未 1 3C 价值。多重来源的结果线性混合模型(IsoSource 模型) 显示了那 50% 或更多从 epibenthic microalgae 在大多数消费者的纸巾的器官的碳被导出。这显示这些主要制片人是造成泻湖食物网的主要食物来源。为 19 个消费者的吝啬的未 1 5N 价值在 4.93 鈥 ? 和 12.97 鈥 ? 之间变化了并且在泻湖显示了四个营养的层次。四 macroinvertebrates 和浮游动物代表了主要消费者，虽然另外的 14 个消费者占据了第二等、第三级的消费者层次。19 个消费者被划分成三个营养的行业协会(detritivores/suspension feeders，不偏食的人和食肉动物) 。关键词同位素- 13C - 15N - IsoSource 模型-营养的水平-特殊研究资金为国家非盈利的研究所(华东海渔业研究院)(号码 2007M03 )支持的食物网，上海 Jingshan 城市沙滩管理公司有限公司，并且中国( 973 程序)( No.2010CB429005 )的国家基本研究程序

英文摘要：

Stable isotope values, δ^13C and δ^15N, were determined for four primary producers and 19 dominant consumers in a small artificial lagoon located in Hangzhou Bay. Based on these results the major pathways for energy flow and trophic structure of the artificial lagoon ecosystem were characterized. The mean δ^13C values for the 19 consumers ranged from -22.99‰ to -14.24‰. Apart from so-iny mullet Liza haematocheila, the other 18 consumers had intermediate δ^13C values between those of epibenthic microalgae and particulate organic matter （POM）. The results of a multiple source linear mixing model （IsoSource model） indicated that 50% or more of the organic carbon in the tissues of most consumers was derived from epibenthic microalgae. This indicated that these primary producers were the main food source fueling the lagoon food web. The mean δ^15N values for the 19 consumers varied between 4.93‰and 12.97‰ and indicated four trophic levels in the lagoon. Four macroinvertebrates and zooplankton represented the primary consumers, whilst the other 14 consumers occupied the secondary and tertiary consumer levels. The 19 consumers were divided into three trophic guilds （detritivores/suspension feeders, omnivores and carnivores）.