scholarly journals A Collection of 13 Archaeal and 46 Bacterial Genomes Reconstructed from Marine Metagenomes Derived from the North Sea

Data ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 15
Author(s):  
Bernd Wemheuer

Marine bacteria are key drivers of ocean biogeochemistry. Despite the increasing number of studies, the complex interaction of marine bacterioplankton communities with their environment is still not fully understood. Additionally, our knowledge about prominent marine lineages is mostly based on genomic information retrieved from single isolates, which do not necessarily represent these groups. Consequently, deciphering the ecological contributions of single bacterioplankton community members is one major challenge in marine microbiology. In the present study, we reconstructed 13 archaeal and 46 bacterial metagenome-assembled genomes (MAGs) from four metagenomic data sets derived from the North Sea. Archaeal MAGs were affiliated to Marine Group II within the Euryarchaeota. Bacterial MAGs mainly belonged to marine groups within the Bacteroidetes as well as alpha- and gammaproteobacteria. In addition, two bacterial MAGs were classified as members of the Actinobacteria and Verrucomicrobiota, respectively. The reconstructed genomes contribute to our understanding of important marine lineages and may serve as a basis for further research on functional traits of these groups.

Author(s):  
Becky Cribdon ◽  
Roselyn Ware ◽  
Oliver Smith ◽  
Vincent Gaffney ◽  
Robin G. Allaby

2019 ◽  
Vol 38 (1) ◽  
pp. 10-10
Author(s):  
Shauna Oppert ◽  
Matthew Casey ◽  
Kyle T. Spikes

Case studies, with a focus on conventional systems, provide insight of seismic and well data sets in terms of characterizing reservoirs with innovative techniques and approaches. This special section contains three such papers from three different regions: offshore Brazil, the North Sea, and the Middle East. Each contribution presents a different geologic problem ranging from siliciclastics to volcanics to carbonates. The challenges faced in each paper were tackled using innovative approaches to reservoir characterization in complex geologic regions.


Geophysics ◽  
1984 ◽  
Vol 49 (9) ◽  
pp. 1411-1419 ◽  
Author(s):  
N. C. Banik

It is known that in the North Sea basin the depths to major reflectors as determined from surface seismic data are often larger than the well‐log depths. From a study of data sets which tie 21 wells, I found a strong correlation between the occurrence of the depth error and the presence of shales in the subsurface. Assuming that the error is caused by elliptical velocity anisotropy in shales, I measured the anisotropy from a comparison of the well‐log sonic data and the interval velocity profile obtained from the surface seismic data and also from a comparison of the seismic depth and the well‐log depth. It was found that the two methods of measurements agree with each other and also agree qualitatively with the previous laboratory measurements of anisotropy in shale samples. The results strongly suggest that the depth anomaly in the North Sea basin is caused by the velocity anisotropy of shales. A simple method to correct the seismic depth is given.


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