Lipids from free-floating sediment traps ...

• Main Authors: Cailliau, Caroline, Belviso, Sauveur, Goutx, Madeleine, Bedo, Alain, Park, Young-Hyang, Charriaud, Edwige
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1999
• Subjects: Oceanography; FOS Earth and related environmental sciences; MD78; Marion Dufresne 1972; Biogeochemical Processes in the Oceans and Fluxes PROOF; Joint Global Ocean Flux Study JGOFS; Southern Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.736927; https://doi.pangaea.de/10.1594/PANGAEA.736927

During summer 1994, the production regime at 2 sites located in the Indian sector of the Southern Ocean, one in the Permanent Open Ocean Zone (POOZ) at 52° S, and a second in the Seasonal Ice Zone (SIZ) at 63° S, was dominated by regeneration (0.3 < f-ratio < 0.4). Two time series, each of about 4 d, were performed over pre-determined time intervals of 4 h using a free-floating sediment trap set at 200 m at the 2 sites. Hourly variations of C, N, chlorophyll a (chl a) and its degradation products, taxon-specific pigments, lipid classes and dimethylsulfoniopropionate (DMSP) were measured simultaneously. Measurements in the water column were done during the sediment trap drifting. Fucoxanthin, a typical diatom pigment, was the major accessory pigment found in the trap material at the 2 stations, whereas, in the water column, the phytoplankton was dominated by flagellates in the POOZ and diatoms in the SIZ. This suggests selective grazing of diatoms by zooplankton and/or mass sinking of diatoms, at least ... : Supplement to: Cailliau, Caroline; Belviso, Sauveur; Goutx, Madeleine; Bedo, Alain; Park, Young-Hyang; Charriaud, Edwige (1999): Sedimentation pathway in the Indian sector of the Southern Ocean during a production regime dominated by regeneration. Marine Ecology Progress Series, 190, 53-67 ...