Bacteria, meiofauna and macrofauna density and macrofauna biomass in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) ...

During PS85 in 2014 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 chamber...

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Bibliographic Details
Main Authors: Braeckman, Ulrike, Hoffmann, Ralf
Format: Dataset
Language:English
Published: PANGAEA 2018
Subjects:
Online Access:https://dx.doi.org/10.1594/pangaea.884600
https://doi.pangaea.de/10.1594/PANGAEA.884600
Description
Summary:During PS85 in 2014 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 centrifuged ...