Abstract：
Planktonic organisms, which have direct contact with water, serve as the entry point for mercury (Hg), into the marine food web, impacting its levels in higher organisms, including fish, mammals, and humans who consume seafood. This study provides insights into the distribution and behavior of Hg within the Baltic Sea, specifically the Gulf of Gdańsk, focusing on pelagic primary producers and consumers. Phytoplankton Hg levels were primarily influenced by its concentrations in water, while Hg concentrations in zooplankton resulted from dietary exposure through suspended particulate matter and phytoplankton consumption. Hg uptake by planktonic organisms, particularly phytoplankton, was highly efficient, with Hg concentrations four orders of magnitude higher than those in the surrounding water. However, unlike biomagnification of Hg between SPM and zooplankton, biomagnification between zooplankton and phytoplankton was not apparent, likely due to the low trophic position and small size of primary consumers, high Hg elimination rates, and limited absorption.
摘要：
浮游生物，与水直接接触，作为汞(Hg)的入口点，进入海洋食物网，影响其在高等生物中的水平，包括鱼,哺乳动物,和食用海鲜的人类。这项研究提供了对波罗的海汞的分布和行为的见解，特别是格但斯克湾，专注于远洋初级生产者和消费者。浮游植物的汞含量主要受其在水中的浓度影响，而浮游动物中的汞浓度是由于悬浮颗粒物和浮游植物消费导致的饮食暴露。浮游生物对汞的吸收，特别是浮游植物，效率很高，汞浓度比周围水中的汞浓度高四个数量级。然而,与SPM和浮游动物之间汞的生物放大不同，浮游动物和浮游植物之间的生物放大作用不明显，可能是由于主要消费者的低营养位置和小尺寸，汞消除率高，和有限的吸收。
