From 2004 to 2008, Lumsden was program leader of the Threatened Fauna Species Program at ARI, managing several staff and targeted research projects, working on many collaborative projects.
Von 2004 bis 2008 war Lumsden Leiterin des Threatened Fauna Species Program am ARI, wo sie mehrere gezielte Forschungsprojekte durchführte und an vielen Verbundprojekten arbeitete.