Pyrene Mineralization by Mycobacterium sp. Strain KMS in a Barley Rhizosphere

To determine whether the soil Mycobacterium isolate KMS would mineralize pyrene under rhizosphere conditions, a microcosm system was established to collect radioactive carbon dioxide released from the labeled polycyclic aromatic hydrocarbon. Microcosms were designed as sealed, flow-through systems that allowed the growth of plants. Experiments were conducted to evaluate mineralization of 14C-labeled pyrene in a sand amended with the polycyclic aromatic hydrocarbons degrading Mycobacterium isolate KMS, barley plants, or barley plants with roots colonized by isolate KMS. Mineralization was quantified by collecting the 14CO2 produced from 14C-labeled pyrene at intervals during the 10-d incubation period. Roots and foliar tissues were examined for 14C incorporation. Mass balances for microcosms were determined through combustion of sand samples and collection and quantification of 14CO2 evolved from radiolabeled pyrene. No pyrene mineralization was observed in the sterile control systems. Greater release of 14CO2 was observed in the system with barley colonized by KMS than in microcosms containing just the bacterium inoculum or sterile barley plants. These findings suggest that phytostimulation of polycyclic aromatic hydrocarbons mineralization could be applied in remediation schemes

Single beam bathymetry transects at the West coast of Sylt from Sep 22-26 2016

The dataset contains quality checked, post processed echo soundings as point data (not gridded). It represents the coastal bathymetry in September 2016 in front of "Bunker Hill" at the southern West coast of the island Sylt, in the German Bight of the North Sea. The "WaveDiss" field experiment was conducted from September 21. to October 2., 2016 at the Island Sylt in the North Sea. The goal of the experiment is to provide ground truth data for validation and development of radar remote sensing methods to study nearshore hydro- and morphodynamics (Link: https://www.hzg.de/institutes_platforms/coastal_research/operational_systems/radar_hydrograph/projectsy/index.php.en#tab-25)

Sea surface current deduced from Doppler-shift of high-frequency radar backscatter, 2010-10-29 to 2016-12-31

The HF-Radar network in the German Bight consist of three Wellen Radar (WERA) Systems, which are located on Sylt, Büsum and Wangerooge. All Systems transmit via a rectangular array of four antennae with an average power of 32 W. The Systems on Sylt and Büsum operate at 10.8 MHz with a linear receive array consisting of 12 antennae, while the Wangerooge radar operates at 12.1 MHz with a 16 antennae array. Each radar covers a 120° field of view with a 3°azimuth and 1.5 km range resolution. All systems are operated continuously with an hourly program, where 58 minutes are for measurements and the remaining 2 minutes are utilized to find the best suited frequency around the selected frequency band. The acquired data are preprocessed at each radar site and than forwarded to the main server at HZG in Geesthacht were the final products are generated and uploaded to the COSYNA data base. The radial component of the ocean surface current with respect to the radar look direction is retrieved at each radar site utilizing 20 minutes of data. These components typically cover a range distance of 100 km within the azimuth of 120° covered by the radar. The surface current components are forwarded to the main server at HZG were the data are subject to quality control and fused to a surface current vector field. The radar network resolves surface currents every 20 minutes, which are made available on the COSYNA web portal within 30 minutes of acquisition (http://codm.hzg.de/codm/). The data are organized in daily netCDF files. The first file is from 2010. The measurements are ongoing and will be added in PANGAEA as complete years. All data including the near real-time data will be still available via the COSYNA data portal (doi:10.17616/R3K02T). Details of data management in COSYNA in general are described in an Ocean Science paper (doi:10.5194/os-12-909-2016)