Diffusive oxygen uptake from the Laptev Sea (Arctic Ocean) during POLARSTERN cruise ARK-XXVII/3 (IceArc) from August-September 2012 ...

In this study, we measured a range of biogeochemical parameters down the Laptev Sea continental slope, from around 50 to 3400 m water depth. These included chlorophyll pigments, extracellular enzymatic activity, diffusive oxygen uptake and prokaryotic cell abundance. Our aim was to compare the measu...

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Bibliographic Details
Main Authors: Wenzhöfer, Frank, Bienhold, Christina, Boetius, Antje
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Event label
Oxygen uptake, diffusive
Standard deviation
Carbon, total, flux
Sample comment
Multicorer with television
Oxygen microsensor, Clark type Revsbech, 1989
Calculated from oxygen uptake Boetius & Damm, 1998
ARK-XXVII/3
Polarstern
Assessment of bacterial life and matter cycling in deep-sea surface sediments ABYSS
Arctic
Arctic Ocean
Damm
Laptev Sea
laptev
Online Access:https://dx.doi.org/10.1594/pangaea.945454
https://doi.pangaea.de/10.1594/PANGAEA.945454
Description
Summary:In this study, we measured a range of biogeochemical parameters down the Laptev Sea continental slope, from around 50 to 3400 m water depth. These included chlorophyll pigments, extracellular enzymatic activity, diffusive oxygen uptake and prokaryotic cell abundance. Our aim was to compare the measurements between two years about two decades apart (1993 and 2012).Benthic oxygen consumption rates were determined from ex situ microsensor measurements of diffusive oxygen uptake in retrieved sediment cores, consistent with Boetius & Damm 1998 (doi:10.1016/S0967-0637(97)00052-6). Directly after recovery, cores were stored at in situ temperature and the overlying water gently stirred by rotating small magnets to avoid the development of a stagnate water body above the sediment. High-resolution microprofiles across the sediment water interface were measured using Clark-type O2 microelectrodes equipped with a guard cathode (Revsbach 1989 doi:10.4319/lo.1989.34.2.0474) mounted to motorized micromanipulator (Glud ...

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