Bacteria, meiofauna and macrofauna density and macrofauna biomass in the HAUSGARTEN area (Fram Strait) in 2015 (POLARSTERN cruise PS93.2) ...

• Main Authors: Braeckman, Ulrike, Hoffmann, Ralf
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Event label; Date/Time of event; Latitude of event; Longitude of event; Elevation of event; Replicate; Station label; DEPTH, sediment/rock; Bacteria per unit wet sediment; Meiofauna, abundance; Macrofauna, biomass, wet mass; Macrofauna, abundance; Bottom lander; Multicorer with television; PS93.2; Polarstern; Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten; Fram Strait; Svalbard
• Online Access: https://dx.doi.org/10.1594/pangaea.884601; https://doi.pangaea.de/10.1594/PANGAEA.884601

During PS93.2 (in 2015) bacteria density, meiofauna density, macrofauna density and macrofauna biomass was determined. For the bacterial density determination, sediment subsamples were taken with modified syringes (1.17 cm² cross-sectional area) from MUC recovered sediment cores and from benthic chambers. The first centimetre of each sample was stored in a 2 % filtered formalin solution at 4 °C. The acridine orange direct count (AODC) method (Hobbie et al., 1977) was used to stain bacteria in the subsamples and subsequently bacteria were counted with a microscope (Axioskop 50, Zeiss) under UV-light (CQ-HXP-120, LEj, Germany). For the determination of the meiofauna density and identification of meiofauna taxa, sediment subsamples were taken with modified syringes (3.14 cm² cross-sectional area) from MUC recovered sediment cores. The first centimetre of each sample was stored in borax buffered 4 % formaldehyde solution at 4 °C. The samples were sieved over a 1000 µm and 32 µm mesh. Both fractions were ...