Refers to the process whereby certain substances such as pesticides or heavy metals move up the food chain, work their way into rivers or lakes, and are eaten by aquatic organisms such as fish, which in turn are eaten by large birds, animals or humans. The substances become concentrated in tissues or internal organs as they move up the chain.
A trophic process in which retained substances become more concentrated with each link in the food chain. biological species A population or group of populations whose members have the potential to interbreed. biomass[Gk. bios, life] The dry weight of organic matter comprising a group of organisms in a particular habitat.
The increase in the concentration of a heavy metal (i.e., mercury) or organic contaminants (i.e., chlorinated hydrocarbons-CBCs) in organisms as a result of their consumption with in a food chain/web.