Particle analysis in the Kara Sea ...

• Main Authors: Gaye-Haake, Birgit, Unger, Daniela, Nöthig, Eva-Maria, Okolodkov, Yuri, Fahl, Kirsten, Ittekkot, Venugopalan
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2003
• Subjects: Multiple investigations; BP99; Akademik Boris Petrov; Siberian River Run-Off SIRRO; Kara Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.548070; https://doi.pangaea.de/10.1594/PANGAEA.548070

In September 1999 two short-term moorings with cylindrical sediment traps were deployed to collect sinking particles in bottom waters off the Ob and Yenisei river mouths. Samples were studied for their bulk composition, pigments, phytoplankton, microzooplankton, fecal material, amino acids, hexosamines, fatty acids and sterols and compared to suspended matter and surface sediments in order to collect information about the nature and cycling of particulate matter in the water column. Results of all measured components in sinking particles point to an ongoing seasonality in the pelagic system from blooming diatoms in the first phase to a more retention system in the second half of trap deployment. Due to a phytoplankton bloom observed north of the Ob estuary, flux rates were generally higher in the trap deployed off the Ob than off the Yenisei. The Ob trap collected fresh surface-derived particulate matter. Particles from the Yenisei trap were more degraded and resembled deep water suspension. This material ... : Supplement to: Gaye-Haake, Birgit; Unger, Daniela; Nöthig, Eva-Maria; Okolodkov, Yuri; Fahl, Kirsten; Ittekkot, Venugopalan (2003): Particle fluxes from short-term sediment trap deployments in late summer in the southern Kara Sea. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 309-328 ...