Seagrass Meadows in The Greek Seas

Combined use of optical (satellite imagery), and acoustic (sidescan sonar) remote sensing techniques, as well as in situ methodologies (visual census; SCUBA diving, Towed Underwater Cameras, and Remotely Operated Vehicles) was employed to map the spatial distribution of seagrass habitats in the coastal waters of the Hellenic territory. Seagrass meadows were recorded at approximately 70% of the Hellenic coastline (Eastern Ionian, Aegean and Levantine Seas), and their surface area exceeded 2,673.1 km2. Posidonia oceanica is -by far- the dominant seagrass species of the Hellenic seas, covering the vast majority of seabed at depths between the shoreline and 25 – 30 m (or deeper in insular areas), followed by the species Cymodocea nodosa, Zostera noltei, and Halophila stipulacea, which, however, presenting local presence and limited areal extent. Habitat suitability in terms of the seabed spatial extent that is available for the growth of seagrass meadows (i.e., the spatial extent of coastal areas between the shoreline and the isobath of 20m) and the seawater clarity conditions are highlighted as the critical factors for the formation of well-structured and extensive meadows. The results of this study are of great importance and usefulness for the effective management and conservation of valuable marine ecosystems.

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Simple

Date (Creation)
2022-04-19
Date (Revision)
2022-04-28
Date (Publication)
2022-06-26
Date (Publication)
2023-04-03
Citation identifier
a53ad03f-3837-8373-3737-000000087740
Code
DOI:10.17882/87740
Other citation details

Panayotidis Panayiotis, Papathanasiou Vasillis, Gerakaris Vasilis, Fakiris Elias, Orfanidis Sotiris, Papatheodorou Georgios, Kosmidou Maria, Georgiou Nikos, Drakopoulou Paraskevi, Loukaidi Vasiliki (2022). Seagrass Meadows in The Greek Seas. SEANOE. https://doi.org/10.17882/87740

Point of contact
Organisation name Individual name Electronic mail address Role
SEA scieNtific Open data Edition

data@seanoe.org

Publisher
Ifremer, Scientific Information Systems for the sea

sismer@ifremer.fr

Dataset Holding Organisation
Hellenic Centre for Marine Research, Hellenic National Oceanographic Data Centre

data@hnodc.hcmr.gr

Author
GEMET - INSPIRE themes, version 1.0
SeaVoX salt and fresh water body gazetteer
SeaDataNet Agreed Parameter Groups
SeaDataNet device categories
SeaDataNet Parameter Discovery Vocabulary
SeaVoX Platform Categories
MEDIN data format categories
Keywords
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    no limitations to public access
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    Conditions for access and use apply
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    CC-BY 4.0
    Character set
    UTF8
    Topic category
    • Oceans
    Begin date
    2000-01-01
    End date
    2021-01-01
    N
    S
    E
    W
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    Unique resource identifier
    WGS 1984

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    No information provided.
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    1
    OnLine resource
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    WWW:DOWNLOAD-1.0-http--download

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    Conformance result

    Title

    COMMISSION REGULATION (EC) No 1205/2008 of 3 December 2008 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards metadata

    Date (Publication)
    2010-12-08
    Explanation

    See the referenced specification
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    No

    Conformance result

    Title

    Corrigendum to INSPIRE Metadata Regulation published in the Official Journal of the European Union, L 328, page 83
    Date (Publication)
    2010-12-08
    Explanation

    See the referenced specification
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    Conformance result

    Title

    Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

    Date (Publication)
    2010-12-08
    Explanation

    See the referenced specification
    Pass
    No

    Metadata

    File identifier
    a53ad03f-3837-8373-3737-000000087740 XML
    Metadata language
    English
    Character set
    UTF8
    Hierarchy level
    Dataset
    Date stamp
    2025-05-07T00:00:00
    Metadata standard name

    ISO 19115:2003/19139
    Metadata standard version

    1.0
    Metadata author
    Organisation name Individual name Electronic mail address Role
    Hellenic Centre for Marine Research, Institute of Oceanography

    iosecretariat@hcmr.gr

    		Point of contact
     
     

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    Spatial extent

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    Keywords

    GEMET - INSPIRE themes, version 1.0

    Oceanographic geographical features
    MEDIN data format categories

    Geographic Information System
    SeaDataNet Agreed Parameter Groups

    Habitat Macroalgae and seagrass
    SeaDataNet Parameter Discovery Vocabulary

    Habitat extent Seabed photography Side-scan sonar
    SeaDataNet device categories

    sidescan sonars
    SeaVoX Platform Categories

    orbiting satellite


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