0000000000131160

AUTHOR

Habib Langar

showing 2 related works from this author

Nouvelles connaissances sur les herbiers tigrés de Méditerranée.

2010

International audience; Les herbiers à Posidonia oceanica présentent plusieurs types morpho-structuraux généralement conditionnés par les conditions de milieu (profondeur, hydrodynamisme, substrat, pente, turbidité, sédimentation). Du fait de leur rareté, deux structures particulières, les récifs barrière et les herbiers tigrés, sont considérées depuis une vingtaine d'années comme des paysages marins menacés. Initialement décrits dans le golfe de Gabés, à proximité des îles Kerkennah, les herbiers tigrés se présentent sous forme " de rubans assez étroits qui se développent entre 0.5 et 3 m de profondeur sur matte ". La mise en place de nouveaux programmes d'études …

[SDE.BE] Environmental Sciences/Biodiversity and EcologySettore BIO/07 - EcologiaPosidonia oceanicaMagnoliophytes Posidonia oceanica structureMagnoliophytesstructure[SDE.BE]Environmental Sciences/Biodiversity and Ecology
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The mapping of the Posidonia oceanica (L.) Delile barrier reef meadow in the southeastern Gulf of Tunis (Tunisia)

2016

Abstract Barrier reefs are among the most important ecomorphosis for Posidonia oceanica meadows and have long been subjected to anthropic pressures. The authors mapped the entire Sidi Rais (northeastern Tunisia) Posidonia oceanica barrier reef by means of remote sensing based on processing a satellite image acquired via Google Earth © software, coupled with field observations obtained by snorkeling. The map thus produced represents the P. oceanica barrier reef in its current state, covering a total area of 156.77 ha, the reef being divided into three distinct sections separated by reverse flows with each section subject to varied anthropic factors and disturbances.

0106 biological sciences010504 meteorology & atmospheric sciencesCymodocea nodosaBarrier reefSnorkeling01 natural sciences[ SDE ] Environmental SciencesSatellite image14. Life underwaterBarrier reef mappingReef0105 earth and related environmental sciencesEarth-Surface ProcessesgeographyCymodocea nodosageography.geographical_feature_categorybiologybusiness.industry010604 marine biology & hydrobiologyPosidonia oceanicaGeologybiology.organism_classificationCurrent (stream)OceanographyRemote sensing (archaeology)Anthropic impactPosidonia oceanica[SDE]Environmental SciencesbusinessGeologyJournal of African Earth Sciences
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