MArine Mediterranean Invasive Alien Species Database

Since 2012!

The Database includes Alien species, cryptogenic ones. It includes also species that have been occasionally reported as alien but were subsequently excluded from lists, along with the reasoning of their exclusion.

As provided for by the Action Plan concerning species introduction and invasive species in the Mediterranean Sea, a first version of a regional system for the collection, analysis and dissemination of information on alien and invasive species was developed. The online database on marine invasive species in the Mediterranean Sea (MAMIAS; gives information on invasive non-indigenous species in the Mediterranean (list of alien species, list of marine invasive species, list of vectors, etc...) and allows the use of different filters to find required data and retrieve statistics at regional and national level about aliens and invasive species.

The Catalogue is the core of the MAMIAS. It contains the information needed to efficiently retrieve information on NIS distribution in the Mediterranean. The Catalogue currently includes information on about 1400 alien taxa. The MAMIAS Catalogue was initially based on an inventory of all species reported to be alien in the Mediterranean through published papers and grey litterature.

Since the initial compilation, the Catalogue was updated in 2017, revised and validated through a process which includes several steps to achieve high quality standards.In the Catalogue, each valid name is connected it with additional information for each species (e.g. taxonomy,sysnonyms, etc...). A taxonomic tree (kingdom, phylum/division, class, order, and family) is associated with every species in the Catalogue.

Information on pathways of introduction is included if known. MAMIAS will gradually align its pathways categorization to the one proposed by the Convention of the Biological Diversity (CBD 2014. Pathways of introduction of invasive species, their prioritization and management. UNEP/CBD/SBSTTA/18/9/Add.1, Montreal, Canada, 23-28 June 2014, 18 pp.), aiming at achieving synchronization and harmonizing of information on Alien Species pathways.

Species that are recognized to have a high impact present (species lists of DAISIE, GISD, NOBANIS, CABI, MedPAN and SEBI-2010) are highlighted. The occurrences of Alien Species in the Mediterranean results from spatial data coming from screening the scientific literature and retrieving geo-referenced data, the Contracting Parties Surveillance systems established to comply with the Decision on IMAP and from a network of Scientists working in the Mediterranean, on the basis of the species contained in the MAMIAS Catalogue. Data collected are then shown in occurrences maps at for each species of the catalogue when existing

For citing MAMIAS please use: SPA/RAC-UNEP/MAP- Marine Mediterranean Invasive Alien Species Database (MAMIAS)