Flux of biomarkers and organisms at AWI HAUSGARTEN from two moorings ...

• Main Authors: Lalande, Catherine, Nöthig, Eva-Maria, Bauerfeind, Eduard, Hardge, Kristin, Beszczynska-Möller, Agnieszka, Fahl, Kirsten
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2016
• Subjects: Fram Strait
• Online Access: https://dx.doi.org/10.1594/pangaea.859549; https://doi.pangaea.de/10.1594/PANGAEA.859549

Time-series sediment traps were deployed at 4 depths in the eastern Fram Strait from July 2007 to June 2008 to investigate variations in the magnitude and composition of the sinking particulate matter from upper waters to the seafloor. Sediment traps were deployed at 196 m in the Atlantic Water layer, at 1296 and 2364 m in the intermediate and deep waters, and at 2430 m on a benthic lander in the near-bottom layer. Fluxes of total particulate matter, particulate organic carbon, particulate organic nitrogen, biogenic matter, lithogenic matter, biogenic particulate silica, calcium carbonate, dominant phytoplankton cells, and zooplankton fecal pellets increased with depth, indicating the importance of lateral advection on fluxes in the deep Fram Strait. The lateral supply of particulate matter was further supported by the constant fluxes of biomarkers such as brassicasterol, alkenones, campesterol, beta-sitosterol, and IP25 at all depths sampled. However, enhanced fluxes of diatoms and appendicularian fecal ... : Supplement to: Lalande, Catherine; Nöthig, Eva-Maria; Bauerfeind, Eduard; Hardge, Kristin; Beszczynska-Möller, Agnieszka; Fahl, Kirsten (2016): Lateral supply and downward export of particulate matter from upper waters to the seafloor in the deep eastern Fram Strait. Deep Sea Research Part I: Oceanographic Research Papers, 114, 78-89 ...