Areas of high conservation value in Georgia: present and future threats by invasive alien plants

Détails

ID Serval
serval:BIB_FC28802E07AE
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Areas of high conservation value in Georgia: present and future threats by invasive alien plants
Périodique
Biological Invasions
Auteur(s)
Thalmann D.J.K., Khutsishvili M., Kharazishvili D., Guisan A., Broennimann O., Müller-Schärer H.
ISSN
1573-1464
ISSN-L
1387-3547
Statut éditorial
Publié
Date de publication
2015
Peer-reviewed
Oui
Volume
17
Numéro
4
Pages
1041-1054
Langue
anglais
Résumé
Georgia is known for its extraordinary rich biodiversity of plants, which may now be threatened due to the spread of invasive alien plants (IAP). We aimed to identify (i) the most prominent IAP out of 9 selected potentially invasive and harmful IAP IAP by predicting thetheir distribution of 9 selected IAP under current and future climate conditions in Georgia as well as in its 43 Protected Areas, as a proxy for areas of high conservation value and (ii) the Protected Areas most at risk due to these IAP. We used species distribution models based on 6 climate variables and then filtered the obtained distributions based on maps of soil and vegetation types, and on recorded occurrences, resulting into the predicted ecological distribution of the 9 IAP's at a resolution of 1km2.
We foundOur habitat suitability analysis showed that Ambrosia artemisiifolia, (24% and 40%) Robinia pseudoacaia (14% and 19%) and Ailanthus altissima (9% and 11%) have the largest potential distribution are the most abundant (predicted % area covered)d) IAP, with Ailanthus altissima the potentially most increasing one over the next fifty years (from 9% to 13% and from 11% to 25%), for Georgia and the Protected Areas, respectively. Furthermore, our results show indicate two areas in Georgia that are under specifically high threat, i.e. the area around Tbilisi and an area in the western part of Georgia (Adjara), both at lower altitudes.
Our procedure to identify areas of high conservation value most at risk by IAP has been applied for the first time. It will help national authorities in prioritizing their measures to protect Georgia's outstanding biodiversity from the negative impact of IAP.
Mots-clé
Biological invasion, Biodiversity, Protected Areas, Species distribution models, SDM, Climate change, Conservation
Web of science
Création de la notice
20/08/2014 23:34
Dernière modification de la notice
20/08/2019 17:27
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