Hoffmann, Katy; Hassenrück, Christiane; Bienhold, Christina: The effect of hydrostatic de- and re-compression events on deep-sea bacterial communities [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.874784 (unpublished dataset)
Abstract:
This work focuses on the effect of decompression on bacterial communities from deep-sea surface sediments. We evaluated the effects of slow and fast decompression (within hours and seconds, respectively), and repeated de-re-compression (up to 10 times) on the abundance and extracellular enzymatic activity of bacterial communities as well as their taxonomic composition using next generation sequencing of the 16S rRNA and rRNA gene. Decompression due to sample retrieval from the seafloor with a push corer or a pressure corer showed minor effects on bacterial cell numbers and enzymatic activity patterns. It however showed an initial effect on bacterial activity patterns based on 16S rRNA (cDNA) community analysis. This signal vanished during a few hours standing at atmospheric pressure. The results reported here may be useful to provide ideas for future research as to how bacterial communities react to the procedure of sample retrieval from a high pressure environment.
Project(s):
Funding:
Seventh Framework Programme (FP7), grant/award no. 294757: Assessment of bacterial life and matter cycling in deep-sea surface sediments
Coverage:
Median Latitude: 79.076875 * Median Longitude: 4.137752 * South-bound Latitude: 79.070170 * West-bound Longitude: 4.130670 * North-bound Latitude: 79.081830 * East-bound Longitude: 4.143170
Date/Time Start: 2015-07-28T08:18:00 * Date/Time End: 2015-08-10T18:18:00
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 0.01 m
Event(s):
PS93/052-1 * Latitude Start: 79.081830 * Longitude Start: 4.143170 * Latitude End: 79.081830 * Longitude End: 4.142000 * Date/Time Start: 2015-07-28T08:18:00 * Date/Time End: 2015-07-28T11:58:00 * Location: North Greenland Sea * Campaign: PS93.2 (ARK-XXIX/2.2) * Basis: Polarstern * Method/Device: Remote operated vehicle (ROV)
PS93/081-1 * Latitude Start: 79.070170 * Longitude Start: 4.135170 * Latitude End: 79.073670 * Longitude End: 4.130670 * Date/Time Start: 2015-08-10T13:39:00 * Date/Time End: 2015-08-10T18:18:00 * Location: North Greenland Sea * Campaign: PS93.2 (ARK-XXIX/2.2) * Basis: Polarstern * Method/Device: Remote operated vehicle (ROV)
Parameter(s):
Size:
784 data points