Sediment properties, benthic biogenic compounds, benthic fauna density and biomasses, and benthic diffusive and total fluxes from three stations (Faro, Creek, Isla D) in Potter Cove, Antarctic ...

• Main Authors: Hoffmann, Ralf, Pasotti, Francesca, Vázquez, Susana, Lefaible, Nene, Wenzhöfer, Frank, Braeckman, Ulrike
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2018
• Subjects: Antarctic; Faro; Potter Cove; Antarc*
• Online Access: https://dx.doi.org/10.1594/pangaea.886232; https://doi.pangaea.de/10.1594/PANGAEA.886232

For the determination of sediment properties and biogenic sediment compounds, sediment was sampled with 3.6 cm diameter cores in five replicates by SCUBA divers. Sediment subsamples were taken with cut-off syringes (cross-sectional area = 1.65 cm²) and sliced in 1 cm intervals down to 5 cm sediment depth. Each interval was analyzed for various parameters including median grain size, porosity, photosynthetic pigments, total carbon, total organic carbon and total nitrogen. Sediment samples for photosynthetic pigments were stored at -80°C. Sediment samples of other parameters were stored at -20°C. The median grain size was determined with a Malvern Mastersizer 2000G, hydro version 5.40. Sediment porosity was determined after drying sediment samples over minimum two days at 105°C. The sediment porosity was calculated following Burdrige (2006, Geochemistry of marine sediments, Princeton University Press). Chlorophyll a (Chl a), phaeophytin (Phaeo) and fucoxanthin (Fuco) pigment concentrations were determined by ...