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Bioaccumulation and Biomagnification

Bioaccumulation and Biomagnification. Bioaccumulation and Biomagnification. Bioaccumulation - how pollutants enter a food chain Biomagnification - pollutants tend to concentrate as they move from one trophic level to the next. Lab Analysis! .

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Bioaccumulation and Biomagnification

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  1. Bioaccumulation and Biomagnification

  2. Bioaccumulation and Biomagnification • Bioaccumulation- how pollutants enter a food chain • Biomagnification- pollutants tend to concentrate as they move from one trophic level to the next.

  3. Lab Analysis! • Each phytoplankton has 200 kcal of energy. We started with 100 phytoplankton. What is the total amount of energy available at the first trophic level??? • 20,000 kcal!

  4. Lab Analysis! • Draw a pyramid of energy for this food chain. Remember the phytoplankton started out with 20,000 kcal of energy! Don’t forget the 10% rule. • Now draw a pyramid showing the amount of DDT present at each level. (hint- this may not look like a normal pyramid) • Describe the differences between the two pyramids. • Compare the amount of DDT found in the osprey with the amount of DDT found in one phytoplankton. Be specific, discuss numerical evidence. • Explain what you have learned through this lab (hint- refer back to our goal on the board)

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