Anàlisi preliminar de la percepció i la gestió de les invasions vegetals en espais naturals protegits de Catalunya Authors Jara Andreu Montserrat Vilà i Planella Joan Pino i Vilalta Abstract Invasive exotic plants are considered to be one of the largest threats to native biodiversity. For this reason, we have undergone a compilation of data about the impacts and management strategies of invasive plants in some natural areas of Catalonia, which are considered representative for the ecosystems of this region. Our objectives are: to (1) evaluate the problem perception by public administrations, (2) identify those plants that represent a major threat according to environmental managers, (3) make an inventory of management strategies carried out in these natural areas, and finally (4) estimate the economic consequences of invasive plants management. The data has been obtained through the sending of questionnaires to environmental managers responsible for the management of invasive plants. We have performed more than 30 contacts, of which 67 % have identified plant invasions as a threat for native biodiversity in their natural areas. These respondents have considered that biological invasions occupy, in average, the fifth place in relation to other environmental problems of the region. They have cited a total of 61 problematic invasive plants in their areas of responsibility. The species mentioned in more cases have been Ailanthus altissima, followed by Cortaderia selloana, Buddleja davidii, Robinia pseudoacacia, Senecio inaequidens, Arundo donax, Carpobrotus edulis and Parthenocissus quinquefolia. Thirty-one of the 61 problematic invasive plants have been managed, being Ailanthus altissima the species managed in more places, followed by Carpobrotus edulis, Arundo donax and Cortaderia selloana. The control and eradication of these plants were the management strategies more applied in the studied areas, and they are also the most valuated by the respondents. A total of 151.020 $ have been invested for the management of invasive plants in the contacted natural areas. The species that has caused major management costs is Senecio inaequidens. Nonetheless, the exact costs of most of the applied management actions are unknown to the respondents therefore an accurate economic valuation is quite difficult to achieve. Downloads Download data is not yet available. Downloads Text complet (Català) Published 2008-07-11 Issue Vol. 74 : 2006 Section Regiment de la Cosa Natural License The intellectual property of articles belongs to the respective authors.On submitting articles for publication to the journal Butlletí de la Institució Catalana d'Història Natural authors accept the following terms:Authors assign to Institució de la Societat Catalana d’Història Natural (a subsidiary of Institut d’Estudis Catalans) the rights of reproduction, communication to the public and distribution of the articles submitted for publication to Butlletí de la Institució Catalana d'Història Natural.Authors answer to Institució de la Societat Catalana d’Història Natural for the authorship and originality of submitted articles.Authors are responsible for obtaining permission for the reproduction of all graphic material included in articles.Institució de la Societat Catalana d’Història Natural declines all liability for the possible infringement of intellectual property rights by authors.The contents published in the journal, unless otherwise stated in the text or in the graphic material, are subject to a Creative Commons Attribution-NonCommercial-NoDerivs (by-nc-nd) 3.0 Spain licence, the complete text of which may be found at https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.en. Consequently, the general public is authorised to reproduce, distribute and communicate the work, provided that its authorship and the body publishing it are acknowledged, and that no commercial use and no derivative works are made of it.The journal Butlletí de la Institució Catalana d'Història Natural is not responsible for the ideas and opinions expressed by the authors of the published articles.