17 4 th ESENIAS Workshop Invasive alien plant species in Montenegro, with special focus on Ambrosia artemisiifolia Danijela STEšEvIć 1 , Nedeljko LATINovIć 2 , Danka CAKovIć 1 Abstract Unlike some worldwide regions where invasive ecology is well developed, in Montenegro the interest for this rather new feld in ecology appeared in the last 10 years. According to up to date research, 51 species of alien fora are considered as invasive in Montenegro. In the last 2 years special attention was paid to the common ragweed (Ambrosia artemisiifolia). Although in many regions of the World, the species is known as one of the most noxious agricultural weeds, in Montenegro it mainly inhabits roadside vegetation, very rarely agricultural land. In respect to the legislation about IAS, on 14 th March 2013, the Government of Montenegro on the proposal from the Environmental Protection Agency adopted a Regulation on the National list of indicators in environmental protection. According to this regulation, the alien and invasive species are an indicator (B05) of pressure on DPSIR (Driving forces - Pressures - State-Impact-Response) model. Therefore, in the coming period their annual dynamics will be systematically monitored and summary data will be published each 10 years. Very recently, on 28 th of November 2013 the Regulations about phytosanitary measures for Ambrosia artemisiifolia was adopted. In near future some improvements in the treatment of IAS are expected. In this paper we will present results of the Ambrosia Survey undertaken in southern, central and one part of northern Montenegro, in the period from 2012 to 2013. Keywords: IAS, Montenegro. 1 Faculty of Natural Sciences and Mathematics, University of Montenegro, Džordža Vašingtona bb, 81 000 Podgorica, Montenegro; E-mail: danijela.denist@gmail.com 2 Biotechnical Faculty, University of Montenegro, Kralja Nikole bb, 81 000 Podgorica, Montenegro