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TeachNetUSA: Crimes on the Great Lakes

Ignorant Shippers

Motivational Activity
There are many new species in the Great Lakes and other waterways that were never in them before.  They have been brought here in the ballast tanks of transatlantic freighters.  Water taken on in freshwater seas like the Caspian Sea contain plants and animals that are native to those waters.  Instead of exchanging the freshwater for salt water in mid ocean, these freighters come straight across the Atlantic Ocean.  Once they have reached the Great Lakes and take on new freight the old ballast is pumped out and the plants and animals.  These plants and animals no longer have any natural predators and multiply out of control.

Application Activities
You are to write an informative brochure about where 6 of these aquatic nuisance species have come from, how it got here and when, what kind of damage to the ecosystem it is causing, and how people can help reduce their spread.  This is to be a tri-fold brochure complete with title and map with invasive species located on it.

Aquatic Nuisance Species

Nuisance Species
Scientific Name
Detailed Information
Round Gobi Neogobius melanostomus Map Details
Sea Lamprey Petromyzon marinus Map Details
Rusty Crayfish Orconectes rusticus Map Details
Ruffe Gymnocephalus cernuus Map Details
Eurasian Watermilfoil Myriophyllum spicatum Map Details
Zebra Muscle Dreissena polymorpha Map Details
Purple Loosestrife Lythrum salicaria L. Map Details

Return to Great Lakes Crimes

Success in your assignment will be determined on the following basis.

Scoring Rubric for Ignorant Shippers
Part of Assignment Excellent - 4 pts each Good - 3 pts each Fair - 2 pts each Poor - 1 point each
Aquatic Nuisance Species descriptions Written with all of the information required Written with most of the information required Written with some of the information required Written with very little of the information required
Aquatic Nuisance Species Map All species placed correctly Most species placed correctly Some species placed correctly No species placed correctly
Recommendations about how to keep the spread down Excellent recommendations Good recommendations Fair recommendations No recommendations
Spelling and Grammar There are few spelling or grammar errors There are some spelling or grammar errors There are a lot of spelling or grammar errors Spelling and grammar errors are very common
Finding Information Found all information as instructed Found information with some assistance Found information with a lot of assistance Could not find any information

Outside of brochure

Map of the Great Lakes



Title Page


Inside of Brochure

Species Information and Pictures Species Information and Pictures


What should people do to help prevent the spread of these species


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