The University of Maine System announced Thursday that Selma Botman is leaving the presidency of the University of Southern Maine to work on international issues for the system. A majority of faculty members at Southern Maine voted no confidence in Botman in May, although university rules require a two-thirds majority of all faculty members (that was not met) for such a vote to count. Theodora Kalikow, who recently ended a widely praised tenure as president of the University of Maine at Farmington, will take over at Southern Maine on Tuesday.