NDLI: Fluxes and reactivities of organic matter in a coastal marine bay (1988).

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Fluxes and reactivities of organic matter in a coastal marine bay (1988).

Content Provider	CiteSeerX
Author	Hedges, John I. Clark, Wayne A. Cowie, Gregory L.
Abstract	Vertical fluxes of bulk particulate material, organic carbon, nitrogen, lignin-derived phenols, and neutral sugars through the water column and into surface sediments of Dabob Bay, Washington, were determined monthly for 1 yr by sediment trap deployments at 30, 60, and 90 m at a site 110 m deep. Vertical fluxes of sinking bulk particulate material in this marine bay were elevated during winter and increased in consistent proportion to sediment trap deployment depth throughout the year. Although annual average particle fluxes at 30 and 60 m bracketed the mean accumulation rate of the underlying sediment, the flux at 90 m was higher by a factor of 2 due to resuspension, horizontal advection, or both. The monthly fluxes of lignin-derived phenols paralleled those of total particulate material, in-dicating a common riverine origin. The annual average fluxes of vanillyl and cinnamyl phenols through the water column closely matched the corresponding accumulation rates in the underlying sediment, whereas about a third of the total syringyl phenol input was degraded at the water-sediment interface. Although p-hydroxyacetophenone xhibited a stability typical of lignin-derived phenols, the distinctly higher reactivities (> 60 % degradation) ofp-hydroxybenzaldehyde and p-hy-
File Format	PDF
Publisher Date	1988-01-01
Access Restriction	Open
Subject Keyword	Lignin-derived Phenol Organic Matter Coastal Marine Bay Vertical Flux Bulk Particulate Material Underlying Sediment Water Column Dabob Bay Organic Carbon Annual Average Flux Surface Sediment Common Riverine Origin Total Syringyl Phenol Input Neutral Sugar Total Particulate Material Marine Bay Horizontal Advection Monthly Flux Corresponding Accumulation Rate Trap Deployment Depth Consistent Proportion Sediment Trap Deployment Cinnamyl Phenol Water-sediment Interface Annual Average Particle Flux Mean Accumulation Rate
Content Type	Text

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