activity 87: too many mussels?
DESCRIPTION
Activity 87: Too Many Mussels?. Challenge What are the trade-offs of trying to control an introduced species?. Getting Started. PROS to Zebra Mussels. Cons to Zebra Mussels. Begin the Activity. Complete the After column for statements 11-14 on Student Sheet 77.2. - PowerPoint PPT PresentationTRANSCRIPT
Activity 87: Too Many Mussels? Challenge What are the trade-offs of trying to control an introduced species?
Getting Started
PROS to Zebra Mussels Cons to Zebra Mussels
Begin the Activity Perspectiv
eProblem Solution
EngineerChemistBiologistActivist
Complete the After column for statements 11-14 on Student Sheet 77.2
Perspective Problem Proposed Solution
EngineerZM grow in pipes and block
water flow at the water treatment plant. Lots of
money spent to clean them out
Find a coating for pipes that will
discourage ZM from growing in them
ChemistZM grow in containment
ponds of a chemical company
Use Chemicals to kill the ZM, including
their larvae
BiologistZM have damaged the lake ecology. They cleaned the
water, but changed the food web
Use predators such as fish with teeth or
ducks to control the ZM population. Or use parasites to kill
the ZM
ActivistZM change the ecology of
the lakes and rivers in ways that we don’t even know yet
Slow down or stop its spread by rinsing well all the equipment that has been in a lake or
river.
Answer the Analysis Question for Homework/Grade