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Dissolved organic matter release in a Posidonia oceanica meadow
Barron, C.; Duarte, C.M. (2009). Dissolved organic matter release in a Posidonia oceanica meadow. Mar. Ecol. Prog. Ser. 374: 75-84.
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

    Posidonia König, 1805 [WoRMS]; Posidonia oceanica (Linnaeus) Delile, 1813 [WoRMS]
Author keywords
    Benthic fluxes; Seagrasses; Dissolved organic carbon; Posidonia

Auteurs  Top 
  • Barron, C.
  • Duarte, C.M.

    We examined annual nutrient changes (nitrate, phosphate and ammonium) and the net dissolved organic carbon (DOC), nitrogen (DON) and phosphorus (DOP) release using in situ benthic incubations in a Posidonia oceanica meadow and in unvegetated sediments of Magalluf Bay (Mallorca Island, Spain) at monthly intervals. We also examined the role of the P. oceanica meadow in the C:N:P ratio transformations by comparing the ratios between the inorganic and dissolved organic fluxes in the seagrass ecosystem and those in the plant material. Our results indicate that P. oceanica communities enhance DOC fluxes relative to adjacent unvegetated sediments. The net DOC release from the P. oceanica meadow represents 71 % of the net community production. The C:N:P ratio in the flux of dissolved organic material (DOM) from the P. oceanica community (1450:69:1) exceeded the C:N:P ratio in the DOM flux of unvegetated sediment communities. The high flux of DOC release from this seagrass community might be enriched in carbon compounds, as these plants produce nonstructural carbohydrates in excess.

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