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Title: Seagrass meadows (Posidonia oceanica) distribution and trajectories of change
Authors: Telesca, Luca
Belluscio, Andrea
Criscoli, Alessandro
Ardizzone, Giandomenico
Apostolaki, Eugenia
Fraschetti, Simonetta
Gristina, Michele
Knittweis, Leyla
Martin, Corinne Sophie
Pergent, Gerard
Alagna, Adriana
Badalamenti, Fabio
Garofalo, Germana
Gerakaris, Vasilis
Pace, Marie Louise
Pergent-Martini, Christine
Salomidi, Maria
Keywords: Posidonia oceanica -- Mediterranean Region
Posidonia -- Mediterranean Region
Seagrasses -- Mediterranean Region
Marine biodiversity -- Mediterranean Region
Marine ecology -- Mediterranean Region
Crustacea -- Mediterranean Region
Issue Date: 2015-07-28
Publisher: Springer Nature
Citation: Telesca, L., Belluscio, A., Criscoli, A., Ardizzone, G., Apostolaki, E. T., Fraschetti, S.,... Alagna, A. (2015). Seagrass meadows (Posidonia oceanica) distribution and trajectories of change. Scientific Reports, 5, 12505.
Abstract: Posidonia oceanica meadows are declining at alarming rates due to climate change and human activities. Although P. oceanica is considered the most important and well-studied seagrass species of the Mediterranean Sea, to date there has been a limited effort to combine all the spatial information available and provide a complete distribution of meadows across the basin. The aim of this work is to provide a fine-scale assessment of (i) the current and historical known distribution of P. oceanica, (ii) the total area of meadows and (iii) the magnitude of regressive phenomena in the last decades. The outcomes showed the current spatial distribution of P. oceanica, covering a known area of 1,224,707 ha, and highlighted the lack of relevant data in part of the basin (21,471 linear km of coastline). The estimated regression of meadows amounted to 34% in the last 50 years, showing that this generalised phenomenon had to be mainly ascribed to cumulative effects of multiple local stressors. Our results highlighted the importance of enforcing surveys to assess the status and prioritize areas where cost-effective schemes for threats reduction, capable of reversing present patterns of change and ensuring P. oceanica persistence at Mediterranean scale, could be implemented.
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Telesca et al. (2015).pdfMain article1.68 MBAdobe PDFView/Open
srep12505-s1.pdfSupplementary information 1635.82 kBAdobe PDFView/Open
srep12505-s2.xlsSupplementary information 298 kBMicrosoft ExcelView/Open
srep12505-s3.docxLink to GIS dataset11.52 kBMicrosoft Word XMLView/Open

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