Since 1989 she has been in charge of the Department of Systematics and Geography of the Institute of Botany of the Republic of Armenia and heading a multivolume edition of the Flora of Armenia. Thanks to numerous expeditions in Armenia and other regions of the Caucasus, as well as by studying extensive materials in various herbaria worldwide, Gabrielian successfully completed in 1974 a doctoral thesis on the topic "The genus Sorbus L. of western Asia and the Himalayas".