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Seasonal and plant-part isotopic and biochemical variation in Posidonia oceanica ArchiMer
Cresson, Pierre; Boudouresque, Charles François; Ruitton, Sandrine; Casalot, Laurie; Verlaque, Marc; Harmelin-vivien, Mireille.
Posidonia oceanica is an iconic and highly productive Mediterranean seagrass. As most studies have focused on the fate of its production, temporal and plant part-specific variations of isotopic composition and biochemical content were overlooked. Combined seasonal and plant-part stable isotope composition and biochemical concentrations were measured at the lower depth limit of a P. oceanica meadow (~ 25 meter depth), and explained on the basis of previous knowledge of the specific metabolic functioning of each part. The predominance of compounds with complex chemical structure was reflected by the high concentrations of insoluble carbohydrates, high C/N ratios and high ä13C values. Plant parts clustered in 3 groups with similar isotopic or biochemical...
Tipo: Text Palavras-chave: Posidomia oceanica; Mediterranean Sea; Stable isotopes; Biochemical composition.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00505/61640/65566.pdf
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