2. Bioturbation

Try these first

1. 1.

   What is bioturbation?

   Hint

   Think about how organisms affect soil or sediment.

2. 2.

   Name one organism that contributes to bioturbation.

   Hint

   Consider common soil or sediment dwellers.

3. 3.

   What is the definition of bioturbation?

   • A process of sediment formation
   • The mixing of sediments by organisms
   • A chemical reaction in sediments

   Hint

   Focus on the role of living organisms in sediments.

4. 4.

   True or False: Bioturbation decreases nutrient availability in upper sediment layers.

   • True
   • False

   Hint

   Consider what happens to nutrients when sediments are mixed.

5. 5.

   Discuss how bioturbation might alter the sediment chemistry and the implications for aquatic ecosystems.

   Hint

   Think about the relationship between oxygen levels and chemical changes.

6. 6.

   Design an experiment to measure the effects of bioturbation on contaminant flux in a controlled sediment environment.

   Hint

   Consider how you would control variables while measuring flux.