Fatty acid composition, and bacteria and meiofauna abundance in sediment cores PS71/013 and PS71/085 during POLARSTERN cruise ANT-XXIV/2 ...

• Main Authors: Veit-Köhler, Gritta, Guilini, Katja, Peeken, Ilka, Sachs, Oliver, Sauter, Eberhard-Jürgen, Würzberg, Laura
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2011
• Subjects: ANDEEP-SYSTCO; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarc*; Antarctic; Phytoplankton; Sea ice; Southern Ocean; Weddell Sea; Copepods
• Online Access: https://dx.doi.org/10.1594/pangaea.858142; https://doi.pangaea.de/10.1594/PANGAEA.858142

During the RV Polarstern ANT XXIV-2 cruise to the Southern Ocean and the Weddell Sea in 2007/2008, sediment samples were taken during and after a phytoplankton bloom at 52°S 0°E. The station, located at 2960 m water depth, was sampled for the first time at the beginning of December 2007 and revisited at the end of January 2008. Fresh phytodetritus originating from the phytoplankton bloom first observed in the water column had reached the sea floor by the time of the second visit. Absolute abundances of bacteria and most major meiofauna taxa did not change between the two sampling dates. In the copepods, the second most abundant meiofauna taxon after the nematodes, the enhanced input of organic material did not lead to an observable increase of reproductive effort. However, significantly higher relative abundances of meiofauna could be observed at the sediment surface after the remains of the phytoplankton bloom reached the sea floor. Vertical shifts in meiofauna distribution between December and January may ... : Supplement to: Veit-Köhler, Gritta; Guilini, Katja; Peeken, Ilka; Sachs, Oliver; Sauter, Eberhard-Jürgen; Würzberg, Laura (2011): Antarctic deep-sea meiofauna and bacteria react to the deposition of particulate organic matter after a phytoplankton bloom. Deep Sea Research Part II: Topical Studies in Oceanography, 58(19-20), 1983-1995 ...