Mussels are one of the most threatened groups of animals in North America, with over 71% being listed as endangered, threatened or of special concern. Several studies throughout the Midwest have noted the recurring theme of decline in both abundance and diversity of native mussel species. The correlation of agricultural land use and reduction in mussel abundance and diversity is of particular interest in assessing our regional mussel populations. Last summer we began a two-year study to assess the mussel populations of North Dakota Rivers. This study is jointly funded by the North Dakota Game and Fish Department, Concordia College and Valley City State University. The first year’s research was to determine mussel species distribution throughout North Dakota rivers. Approximately 150 sites were sampled last summer. This summer a project team will conduct quantitative surveys on a limited number of sites so that we can determine relative densities and abundances of North Dakota mussels. The entire project team will consist of four students, two biology faculty (Concordia and Valley City State University) and one technician. Students applying as research assistants should feel comfortable working in water and be able to swim. The project requires travel throughout North Dakota, staying overnight in motels. Travel expenses will be paid by the project grant. The summer portion of the project will run at least 10 weeks. Research assistants may also have the opportunity to work on this project during the academic year, and will be expected to report findings at selected national or regional scientific meetings.