c690ac1c-015b-43e2-8aa1-0aff72eec50e eng EMODnet habitat info@emodnet-seabedhabitats.eu 2022-04-28T16:37:31.168Z ISO 19115:2003/19139 1.0 WGS 1984 Modelled occurrence probability for Posidonia oceanica meadows across the Mediterranean Sea 2013-12-31T11:35:00 This dataset is an output of the ÔÇ£Mediterranean Sensitive HabitatsÔÇØ project (MEDISEH). It shows under a raster form modelled spatial distributions of Posidonia oceanica across the Mediterranean Sea. Posidonia oceanica is endemic to the Mediterranean Sea, where it is the dominant seagrass, covering about 50,000 km2 of coastal to offshore sandy and rocky areas down to depths of about 45 m. P. oceanica is a protected species according to EU legislation (Habitat directive), the Bern and Barcelona Conventions and several national legislations. While its distribution is well documented along the European shores of the western Mediterranean Sea, limited information is available about the southern shore and the eastern Mediterranean Sea. In order to bridge this information gap, one of the goals of Task 1.3 of the MEDISEH project was to model P. oceanica distribution across the whole Mediterranean basin. A Random Forest (i.e. a Machine Learning technique) was ÔÇ£trainedÔÇØ on data from regions where information was available and then used to predict the probability of occurrence of P. oceanica where needed. The raster has a spatial resolution of 0.004166 decimal degrees, and the values are in the [0,1] interval (occurrence probabilities). The work was financed through a service contract for the Directorate-General for Maritime Affairs and Fisheries (DG-MARE, Specific Contract SI2.600741) Michele Scardi mscardi@mclink.it Marianna Giannoulaki marianna@hcmr.gr EMODnet habitat info@emodnet-seabedhabitats.eu thumbnail large_thumbnail Posidonia oceanica Marine habitat mapping Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Creative Commons Attribution 3.0 Unported (CC BY 3.0) 200000 eng environment -6.60 43.00 29.40 47.30 Reference Giannoulaki M, Belluscio A, Colloca F, Fraschetti S, Scardi M, Smith C, Panayotidis P, Valavanis V, Spedicato MT (Eds.) (2013). Mediterranean Sensitive Habitats (MEDISEH), final project report. DG MARE Specific Contract SI2.600741. Heraklion (Greece): Hellenic Centre for Marine Research. 557 p. URL: http://mareaproject.net/download/71/ Please refer to this final report of the MEDISEH project (section on Task 1.3) for full details on the methodology, results and interpretation of the maps showing the predicted occurrence probability for P. oceanica meadows (Figures 1.3.7-11). The authors would also like to express their gratitude to those who kindly shared their occurrence data on Posidonia oceanica, and without whose inputs this work would not have been possible WWW:LINK-1.0-http--link OGC:WMS-1.1.1-http-get-map false