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Bioaccumulation, Bioconcentration, and Biomagnification The toxic rust that strengthens as it crawls up the food chain. | ||
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These Web pages (among others) were used to derive search terms:
Bioaccumulation - Wikipedia, the free encyclopedia
The marine algal blooms known as " red tides " can result in local filter feeding organisms such as mussels and oysters becoming toxic; coral fish can be responsible for the poisoning known as ciguatera when they accumulate a toxin called ciguatoxin from reef algae. ... Some animal species exhibit bioaccumulation as a mode of defense; by consuming toxic plants or animal prey, a species may accumulate the toxin which then presents a deterrent to a potential predator.
Biomagnification - Wikipedia, the free encyclopedia
Food chain energetics -- where the substance concentration increases progressively as it moves up a food chain ... For example, herring contains mercury at approximately 0.01 parts per million (ppm) and shark contains mercury at greater than 1 ppm.
Bioconcentration - Wikipedia, the free encyclopedia
These include: octanol-water partition coefficients (K OW ), bioconcentration factors (BCF), bioaccumulation factors (BAF) and biota-sediment accumulation factor (BSAF). ... "A review of bioconcentration factor (BCF) and bioaccumulation factor (BAF) assessments for organic chemicals in aquatic organisms" .
USGS: Bioaccumulation
Bioaccumulation Factor (BAF) --The bioaccumulation factor (also called the BAF) is analogous to the BCF [bioconcentration factor], but applies to field measurements or to laboratory measurements with multiple exposure routes. ... Environmental Protection Agency, 2000, Bioaccumulation testing and interpretation for the purpose of sediment quality assesment : U.S.
Bioaccumulation & Biomagnification
protect a basic food supply and to protect human health. ... birds, particularly carnivorous birds (raptors) - birds that eat
USGS: Biomagnification
Biomagnification -- Result of the process of bioaccumulation and biotransfer by which tissue concentrations of chemicals in organisms at one trophic level exceed tissue concentrations in organisms at the next lower trophic level in a food chain. - Environmental Protection Agency, 2010 ... Biomagnification . . . Biomagnification begins with ingestion by a predator of a lower trophic level organism whose tissues contain contaminant residues. . . .The available evidence suggests that biomagnification may occur under conditions of low water concentration for compounds of high lipophilicity, high persistence, and low water solubility (Biddinger and Gloss, 1984).â - Nowell and others, 1999
Criteria used by the PBT Profiler
the PBT profiler uses criteria set forth by the EPA in ... chain, the PBT profiler uses criteria set forth by the
Bioaccumulation & Biotransformation - Ecotoxicology and Models
Time series of measured concentrations of parent compounds in water as well as time series of measured internal concentrations of parent compounds and metabolites. ... All models predicted the measured internal concentrations in fish within 1 order of magnitude for at least 68% of the chemicals.
The Persistent Organic Pollutants
accumulate in the fatty tissue of living organisms including humans, and are found at higher concentrations at higher levels in the food chain; and ... This extensive contamination of environmental media and living organisms includes many foodstuffs and has resulted in the sustained exposure of many species, including humans, for periods of time that span generations, resulting in both acute and chronic toxic effects.