Biogenic particle and biomarker flux from a mooring time-series at AWI HAUSGARTEN ...

• Main Authors: Bauerfeind, Eduard, Nöthig, Eva-Maria, Beszczynska, Agnieszka, Fahl, Kirsten, Kaleschke, Lars, Kreker, Kathrin, Klages, Michael, Soltwedel, Thomas, Lorenzen, Christiane, Wegner, Jan
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2009
• Subjects: Mooring long time; ARK-XVI/2; ARK-XVII/1; ARK-XVIII/1; ARK-XX/1; Polarstern; Hotspot Ecosystem Research on the Margins of European Seas HERMES; Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Fram Strait; Global warming; Svalbard
• Online Access: https://dx.doi.org/10.1594/pangaea.714845; https://doi.pangaea.de/10.1594/PANGAEA.714845

Since 2000 long-term measurements of vertical particle flux have been performed with moored sediment traps at the long-term observatory HAUSGARTEN in the eastern Fram Strait (79°N/4°E). The study area, which is seasonally covered with ice, is located in the confluence zone of the northward flowing warm saline Atlantic water with cold, low salinity water masses of Arctic origin. Current projections suggest that this area is particularly vulnerable to global warming. Total matter fluxes and components thereof (carbonate, particulate organic carbon and nitrogen, biogenic silica, biomarkers) revealed a bimodal seasonal pattern showing elevated sedimentation rates during May/June and August/September. Annual total matter flux (dry weight, DW) at ~ 300 m depth varied between 13 and 32 g/m**2/a during 2000 and 2005. Of this total flux 6-13 % was due to CaCO3, 4-21 % to refractory particulate organic carbon (POC), and 3-8 % to biogenic particulate silica (bPSi). The annual flux of all biogenic components together ... : Supplement to: Bauerfeind, Eduard; Nöthig, Eva-Maria; Beszczynska, Agnieszka; Fahl, Kirsten; Kaleschke, Lars; Kreker, Kathrin; Klages, Michael; Soltwedel, Thomas; Lorenzen, Christiane; Wegner, Jan (2009): Particle sedimentation patterns in the eastern Fram Strait during 2000-2005: Results from the Arctic long-term observatory HAUSGARTEN. Deep Sea Research Part I: Oceanographic Research Papers, 56(9), 1471-1487 ...