![]() Biodivervity in Bulgaria :: Invasive alien speciesInvasive alien species are non-native species that are introduced deliberately or unintentionally outside their natural habitats where they become established, proliferate and spread in ways that cause damage to human interests. For this reason, they are now recognized as one of the greatest biological threats to the environment and economic welfare of the planet. The threat to biodiversity due to invasive alien species is considered second only to that of habitat loss (source http://biodiv.org). ![]() Documents and activities in Bulgaria Pollen Morphology and Pollen Production of Invasive and Native Impatiens Species Growing in Bulgaria VI-INTERNATIONAL EUROPEAN CONFERENCE ON INTERDISCIPLINARY SCIENTIFIC RESEARCH Norwegian Journal of development of the International Science USE OF HIMALAYAN BIRCH (BETULA UTILIS) IN LANDSCAPING IN BULGARIA - BENEFITS AND RISKS Survey of invasive alien species in the fl ora of Lozenska Mountain, Bulgaria Details of the felling of the field protective forest belts of Gleditsia triacanthos L... Opuntia fragilis (Nutt.) Haw. (Cactaceae) in the Bulgarian flora Opuntia humifusa (Raf.) Raf. (Cactaceae) in the Bulgarian flora Contribution to the knowledge of naturalised Opuntia species (Cactaceae) in the Bulgarian flora Information Sources for Further Reference |