1 / 9

Bioaccumulation & Biomagnification

Bioaccumulation & Biomagnification. Chemicals in our Environment. Bioaccumulation. The gradual buildup , over time, of a chemical in a LIVING ORGANISIM. Why Does This Happen?. Chemicals are taken up faster than they are used Or Chemicals can’t be broken down by the organism for use.

emanuele-yadiel
Download Presentation

Bioaccumulation & Biomagnification

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Bioaccumulation & Biomagnification Chemicals in our Environment

  2. Bioaccumulation • The gradual buildup, over time, of a chemical in a LIVING ORGANISIM

  3. Why Does This Happen? • Chemicals are taken up faster than they are used Or • Chemicals can’t be broken down by the organism for use

  4. Pollutants Chemical pollutants that are bioaccumulated come from many sources • Pesticides • Industrial Smoke Stacks • Automobile Emissions • Deliberate Discharge of Compounds into Water

  5. Biomagnification • The buildup of substances by successive trophic levels • Example: A predator will have higher concentrations of a chemical compared to its prey DDT Soil(10ppm)Earthworms(141ppm)Robins(444ppm)

  6. 24 units 12 units 6 units 2 units 1 unit

  7. DDT • Dicholoro-diphenyl-trichloroethane • An insecticide used in the 40’s, 50’s and 60’s • entered the environment in run-off from land • Was banned in 1972 after the Bald Eagle population had a noticeable crash.

  8. What is the difference Biomagnification Bioaccumulation

More Related