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Field studies of endemic, endangered and nationally important species of Greece». Funded by the Natural Environment and Climate Change Agency (NECCA)","awards":[],"relatedProjects":[],"abstract":"Maërl beds are biogenic benthic habitats distributed worldwide and known to sustain high productivity andMaërl beds are biogenic benthic habitats distributed worldwide and known to sustain high productivity and\nbiodiversity levels. In the Mediterranean, the number of studies that have been carried out is limited, and little is\nknown on its real distribution. In Greek marine sector the available information regarding the maërl beds is\nlimited and scattered. They are vulnerable to physical disturbance by fishing gears and smothering, and to\nwater pollution by organic enrichment and sewage. Although maërl beds are protected by EU legislations and\ndirectives the lack of maps and information on their distribution makes the effective application of these\nmeasures impossible. 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