PROVO — Larry St. Clair, director of the Monte L. Bean Life Science Museum at Brigham Young University, has announced the appointment of Leigh A. Johnson as associate director for research and collections, effective Jan. 3.

Johnson replaces Jack Sites, who has served as associate director of the museum for the past 5½ years and who will continue as curator of the museum's reptile and amphibian collection.

Johnson will now assume responsibility for the research and collections-related functions of the museum. For the past five years, he has served as curator of the herbarium (vascular plant collection), an assignment he will retain. Johnson is a faculty member in the department of biology at BYU.