Name: _________________________________ Date: _____________
Nonnative or invasive species are a huge problem worldwide. They may look like they fit in, but invasive species crowd out native ones and gobble up nutrients. Once they get a foothold, they're tough to get rid of them. In this activity, you'll look at the problems caused by invasive mussels in waterways of the United States.
- Go to the USGS Zebra Mussel information page. Scroll to Real Time Maps, then click Current Zebra Mussel Sightings. How widespread are zebra mussels in the U.S.?
- Explore the U.S. Distribution Maps from 1988 to the current year. Describe how zebra mussels have spread since 1988.
- Look at this Zebra Mussel fact sheet. Scroll to zebra mussel Identification below the pictures. Where are zebra mussels typically found?
- Scroll to Native Range. Where are zebra mussels native to?
- Scroll Non-indigenous Occurrences. When and where did the mussels reach North America?
- Scroll to Means of Introduction. How did the mussels first get into the Great Lakes?
- Continue to Impact of Introduction. Summarize the impact the invasive species has had.
- What effects do the mussels have on food webs of an ecosystem? Give examples.