水生食物链

大型食肉鱼类-如方头鱼，旗鱼和鲭鱼的甲基汞水平往往高于比他们更小的鱼，因为其水生食物链中更高。

Large , predatory fish such as tilefish , swordfish and king mackerel tend to have higher levels of methyl mercury than do smaller fish because they 're higher in the aquatic food chain .

水生食物链不同于陆地食物链。

Aquatic food chains are different from terrestrial ones .

多溴联苯醚在典型电子垃圾污染区域水生食物链上的生物富集特征

Bioaccumulation of Polybrominated Diphenyl Ethers in a Contaminated Freshwater Food Web from an E-Waste Recycling Site , South China

原生动物是水生生态系统食物链中重要环节，发挥着十分重要的生态功能作用。

Protozoa is an important component in the aquatic ecosystem , and exhibits many of the characteristics of structure and function of entire aquatic ecosystems .

水溞（Daphnia）属于甲壳纲、淡水枝角类的浮游水生动物，广泛分布于世界各地，是水生食物链中的关键生物。

Daphnia ( Cladocero : crustacea ), an important animal of the diet for many fish , is widespread in the world and has a critical role in aquatic ecology chains .