The Round Goby

The data shows that once the round goby was introduced to the ecosystem the native species began to decline. The four native species in lab were perch, bass, bluegill, and walleye. Each species had to use a different utensil to collect food. The perch used one plastic spoon, the bass used two knives, the bluegill used one fork, and the walleye used two forks. In graph one it is shown that the smallmouth bass still survived greatly even with the round goby in the ecosystem. In table 2 the round goby began to overrule the native species. The goby began to prosper more and the native species decline because their food was taken away by the round goby. The yellow perch and the smallmouth bass had similar calculations since they had an easier utensil to pick up the resources.The data did support the hypothesis recorded because when the round goby was introduced to the lake the native fish species declined.

Analysis Competition was required with other native species just so that the a fish species that a student had could live. A student had to have 5 pom-poms to live so the student had to compete with other fish species to to get the necessary resources for survival and reproduction. The goby could eat anything so it was hard to compete with them. The fish species began to die off since the goby was eating all of the resources, and if there is no …show more content…
The first step to this lab was pom poms were distributed onto the felt randomly. Students were then randomly assigned a fish species card. In a span of 30 seconds each of the four native fish collected food using the assigned tool. After each round the resources are put back on the felt. Three rounds were played before the round goby was added. The materials in the lab were 5 cups, 2 plastic knives, 1 plastic spoons, 3 plastic forks, fingers, 10 red pom-poms, 12 black pom-poms, 10 white pom-poms, 3x4 piece of felt, and 25 poker