Bioaccumulation: Difference between revisions
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[[File:Contaminated fish .jpg|thumbnail|right|There are places where toxin levels are high enough that entire food sources must be avoided.<ref name = ee>Cleanmarine internet:http://www.cleanmarinekrill.co.uk/blog/where-does-your-fish-oil-come-from-researchers-warn-of-higher-levels-of-toxins-in-larger-fish</ref>]] | [[File:Contaminated fish .jpg|thumbnail|right|There are places where toxin levels are high enough that entire food sources must be avoided.<ref name = ee>Cleanmarine internet:http://www.cleanmarinekrill.co.uk/blog/where-does-your-fish-oil-come-from-researchers-warn-of-higher-levels-of-toxins-in-larger-fish</ref>]] | ||
<onlyinclude>'''Bioaccumulation''' | <onlyinclude>'''Bioaccumulation''' is when the [[concentration in parts per|concentration]] of chemicals increases within an organism or species. This can occur when toxic substances are ingested.</onlyinclude><ref name=book1>D. Mackay and a. Fraser, “Bioaccumulation of persistent organic chemicals: mechanisms and models,” Environmental Pollution, vol. 110, no. 3, pp. 375–391, Dec. 2000.</ref> These toxic substances are very difficult for organisms to excrete, therefore, ''accumulate'' in their tissues. One common pollutant that bioaccumulates is [[Mercury (pollutant)|mercury]], which specifically accumulates in fish. Organic compounds and metals can both bioaccumulate. | ||
==Bioaccumulation vs Biomagnification== | |||
An important result of bioaccumulation is [[biomagnification]]. This describes when toxins ''magnify'' upward in the food chain—whereas bioaccumulation describes when toxins ''accumulate'' within a single organism. | |||
''Biomagnification is a very closely related idea. To learn more about it, click [[biomagnification|here]].'' | ''Biomagnification is a very closely related idea. To learn more about it, click [[biomagnification|here]].'' | ||
==For Further Reading== | |||
*[[Biomagnification]] | |||
*[[Pollutant]] | |||
*[[Mercury (pollutant)]] | |||
*[[Concentration in parts per]] | |||
*Or explore a [[Special:Random|random page]] | |||
Revision as of 02:26, 2 December 2018
There are places where toxin levels are high enough that entire food sources must be avoided.[1]
Bioaccumulation is when the concentration of chemicals increases within an organism or species. This can occur when toxic substances are ingested.[2] These toxic substances are very difficult for organisms to excrete, therefore, accumulate in their tissues. One common pollutant that bioaccumulates is mercury, which specifically accumulates in fish. Organic compounds and metals can both bioaccumulate.
Bioaccumulation vs Biomagnification
An important result of bioaccumulation is biomagnification. This describes when toxins magnify upward in the food chain—whereas bioaccumulation describes when toxins accumulate within a single organism.
Biomagnification is a very closely related idea. To learn more about it, click here.
For Further Reading
References
- ↑ Cleanmarine internet:http://www.cleanmarinekrill.co.uk/blog/where-does-your-fish-oil-come-from-researchers-warn-of-higher-levels-of-toxins-in-larger-fish
- ↑ D. Mackay and a. Fraser, “Bioaccumulation of persistent organic chemicals: mechanisms and models,” Environmental Pollution, vol. 110, no. 3, pp. 375–391, Dec. 2000.