Pesticides and metals are often used in agriculture and are therefore often simultaneously discharged to nearby estuarine and marine areas. The effects of this organic-inorganic chemical mixture on food quality of aquatic organisms are currently unknown. In this study we test if a mixture of copper (inorganic) and the herbicide Primextra® Gold TZ (organic) affects the quality of the diatom Thalassiosira weissflogii and the copepod Acartia tonsa – two key species that fuel the local food-web. We quantified quality (i.e. energy content as food for the next trophic level) in terms of fatty acids, proteins and thiobarbituric acid reacting substances. We found non-additive effects (positive and negative) of the metal-herbicide mixture on the diatom and copepod species. In general, nutritionally important biochemical parameters of Acartia tonsa were most sensitive to the chemical stressors.

农药和金属经常用于农业，因此经常同时排放到附近的河口和海域。目前尚不清楚这种有机-无机化学混合物对水生生物食品质量的影响。在这项研究中，我们测试了铜（无机）和除草剂Primextra®Gold TZ（有机）的混合物是否会影响硅藻Thalassiosira weissflogii和the足类car螨Acartiatonsa的质量。–推动当地食物网发展的两个关键物种。我们根据脂肪酸，蛋白质和硫代巴比妥酸反应物质对质量进行了定量（即作为下一营养级的食物所含的能量）。我们发现金属除草剂混合物对硅藻和co足类物种具有非加性效应（正性和负性）。通常，A菜的重要营养重要生化参数对化学胁迫最为敏感。