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… known to habitats and ecosystems, especially changes in species composition, ecosystem DIFFERENT POLLUTANTS CHEMICAL … habitats, toxicity, reduction in population size of species such as frogs, feminization of fish Impairment of … marine ecosystems a) Nutrient risk: The nutrient risk indicator takes into account both the amount of nutrients …

… mercury from surface waters into the deep oceans. In some species of Arctic marine animals, mercury content has … in water, and of methylmercury in fish and other aquatic species. When artificial lakes are created, plant material is … of mercury concentrations in the important marine food species is essential to understanding possible human health …