Chemistry of pore water from Arctic sediments ...

• Main Authors: Hulth, Stefan, Hall, Per, Blackburn, T H, Landén, A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1996
• Subjects: AWI; Multiple investigations; MultiCorer; Giant box corer; ARK-VIII/2; Polarstern; Origin and Fate of Biogenic Particle Fluxes in the Ocean ORFOIS; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Silicon Cycling in the World Ocean SINOPS; Arctic Ocean; Svalbard
• Online Access: https://dx.doi.org/10.1594/pangaea.725786; https://doi.pangaea.de/10.1594/PANGAEA.725786

Pore water and solid phase distributions of C, N, P and Si in sediments of the Arctic Ocean (Svalbard area) have been investigated. Concentrations of organic carbon (Corg) in the solid phase of the sediment varied from 1.3 to 2.8% (mean 1.9%), with highest concentrations found at shallow stations south/southwest of Svalbard. Relatively low concentrations were obtained at the deeper stations north/northeast of Svalbard. Atomic carbon to nitrogen ratios in the surface sediment ranged from below 8 to above 10. For some stations, high C/N ratios together with high concentrations of Corg suggest that sedimentary organic matter is mainly of terrigenous origin and not from overall biological activity in the water column. Organic matter reactivity (defined as the total sediment oxygen consumption rate normalized to the organic carbon content of the surface sediment) correlated with water depth at all investigated stations. However, the stations could be divided into two separate groups with different reactivity ... : Supplement to: Hulth, Stefan; Hall, Per; Blackburn, T H; Landén, A (1996): Arctic sediments (Svalbard): pore water and solid phase distributions of C, N, P and Si. Polar Biology, 16(6), 447-462 ...