The great lakes have recently undergone a second wave of species invaisons dominated by exotic invertebrates including zebra mussels (Dreissena polymorpha) and quagga mussels (D. bugensis) Here is a typical food web in the great lakes where the mussels are living in the food web they are on the left side recond row from the bottom predict the impact these invasive species will have on the food web and the other species there
