The biological sequestering of a substance at a higher concentration than that at which it occurs in the surrounding environment or medium. Also, the process whereby a substance enters an organism through the gills, epithelial tissues, dietary, or other sources.
Even though lead usage has declined due to environmental awareness and regulation, several human sources of lead continue to affect birds. Hunting ammunition and fishing gear are ingested by the birds, with toxic effects.
Overview of three research programs including determining levels of mercury at selected sites in water, sediment and fish, mercury emissions into the atmosphere, and mercury cycling in the Everglades National Park, Florida.
Paper by Duane Chapman for the 6th International SPMD Workshop and Symposium on a semipermeable membrane device (SPMD) measures contaminants in water by mimicking the parts of fish that cause concentration of specific chemicals in fish tissues.