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dc.contributor.authorForja, Jesús M.-
dc.contributor.authorGómez-Parra, Abelardo-
dc.identifier.citationMarine Ecology Progress Series 164: 95-105 (1998)es_ES
dc.description11 páginas, 8 figuras, 2 tablas.es_ES
dc.description.abstractThis paper presents a simple model to determine the benthic fluxes of matter across the sediment-water interface when a benthic chamber is used. The model is based on accepting that the limiting step for the overall rate of transfer while the chamber is in position is the diffusion through the diffusive boundary layer (DBL) overlying the sediment, and it assumes that this rate is necessarily affected by the procedure employed to measure the flux. Alteration of the benthic fluxes due to the action of macrofauna is included in the model and, operatively, is expressed in terms of a reduction in the thickness of the DBL between the sediment and the water. If the diffusive fluxes are determined simultaneously with the benthic chamber experiments, a value can be estimated for the thickness of the 'stagnant film'. Owing to the assumptions made and to the micro-heterogeneities of the sediment, this thickness can be considered to have both an operative and a statistical meaning, with respect to the entire surface area covered by the chamber. The values calculated in the Bay of Cádiz (SW Spain) vary between 0.36 and 0.71 mm, which are in agreement with measurements of this film made by different techniques in other littoral ecosystems. However, the values of the in situ fluxes estimated using this model and by other established procedures described in the literature can differ by more than 50%, for the same experiment, in strongly irrigated zones.es_ES
dc.description.sponsorshipThe work was supported by the Consejo Superior de Investigaciones Científicas (CSIC) through research grant 630/070-1988.es_ES
dc.publisherInter Researches_ES
dc.subjectBenthic chamberes_ES
dc.subjectBenthic regenerationes_ES
dc.subjectNutrient fluxeses_ES
dc.subjectDiffusive fluxeses_ES
dc.subjectMacrofaunal irrigationes_ES
dc.subjectSediment-water interfacees_ES
dc.subjectCoastal ecosystemes_ES
dc.titleMeasuring nutrient fluxes across the sediment-water interface using benthic chamberses_ES
dc.description.peerreviewedPeer reviewedes_ES
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