Enhanced benthic nitrous oxide and ammonium production after natural oxygenation of long‐term anoxic sediments - Processes and pools in the benthic nitrogen cycle after natural oxygenation of long-term anoxic sediment
SND-ID: 2022-12-1. Version: 1. DOI: https://doi.org/10.5878/7hr7-s215
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Citation
Creator/Principal investigator(s)
Astrid Hylén
- University of Gothenburg, Department of Marine Sciences
Stefano Bonaglia
- University of Gothenburg, Department of Marine Sciences
Elizabeth Robertson
- University of Gothenburg, Department of Marine Sciences
Ugo Marzocchi
- Aarhus University, Department of Biology
Mikhail Kononets
- University of Gothenburg, Department of Marine Sciences
Astrid Hylén
- University of Gothenburg, Department of Marine Sciences
Stefano Bonaglia
- University of Gothenburg, Department of Marine Sciences
Elizabeth Robertson
- University of Gothenburg, Department of Marine Sciences
Ugo Marzocchi
- Aarhus University, Department of Biology
Mikhail Kononets
- University of Gothenburg, Department of Marine Sciences
Per Hall
- University of Gothenburg, Department of Marine Sciences
Research principal
University of Gothenburg
- Department of Marine Sciences
Description
In this study, we describe the long-term impact of a natural oxygenation event on the fate of fixed nitrogen in the sediment. We investigated whether the newly oxygenated sediments were sites of efficient removal of fixed nitrogen through denitrification and anammox, which environmental factors affected the division between nitrate reduction processes, and whether nitrate from the water column or sedimentary nitrification was fuelling nitrate reduction processes in the sediment. We conducted three yearly samplings in 2016, 2017, and 2018, where we performed in situ measurements of nitrate reduction process rates and sediment–water fluxes of nutrients, oxygen and dissolved inorganic carbon . We additionally collected sediment samples and measured sediment microprofiles of oxygen, nitrous oxide and hydrogen sulphide to gain further insights into the spatial distribution of the processes in surface sediments.
The data set contains 5 files with the following data:
- Station information; locations, sediment surface and bottom water conditions
- Sediment properties; carbon and nitrogen in the sedi
The data set contains 5 files with the following data:
- Station information; locations, sediment surface and bottom water conditions
- Sediment properties; carbon and nitrogen in the sediment solid phase, porosity, pore water concentrations of NOx and NH4.
- Microsensor measurements of O2, N2O and H2S
- Sediment-water fluxes of oxygen, dissolved inorganic carbon, NH4 and NOx
- Nitrate reduction rates in the sediment
Full descriptions of the data can be found in the corresponding readme files accessible from the Data and documentation tab. Show less..
Data contains personal data
No
Language
Geographic spread
Geographic location: Baltic Sea
Geographic description: Eastern Gotland Basin, Baltic Sea
Responsible department/unit
Department of Marine Sciences
Funding 1
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Funding agency:
Swedish Research Council
- Funding agency's reference number: 2015-03717
- Project name on the application: Effect of a natural Baltic oxygenation-deoxygenation cycle on benthic recycling of P, N, Si and C - An in situ observation and modelling study
Funding 2
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Funding agency:
Grundfos Foundation
Research area
Geochemistry (Standard för svensk indelning av forskningsämnen 2011)
Oceanography, hydrology and water resources (Standard för svensk indelning av forskningsämnen 2011)
Environmental management (Standard för svensk indelning av forskningsämnen 2011)
Keywords
Sediment composition, Sediment chemistry, Marine sediment, Mud (sediment), Sediment, Biogeochemical process, Nitrogen retention, Nitrogen removal, Nitrogen metabolism, Ammonium nitrogen compounds, Organic matter, Nitrogen-15, Dissolved inorganic nitrogen, Nitrogen cycle, Oxygen consumption, Sediment organic content proportion, Nitrogen-15 method, Sediment chemistry, Dissolved oxygen, Nitrogen dioxide, Sediment content, Sediment oxygen demand, Marine sediment
Hylén, A., S. Bonaglia, E. Robertson, U. Marzocchi, M. Y. Kononets, and P. O. J. Hall. 2022. Enhanced benthic nitrous oxide and ammonium production after natural oxygenation of long‐term anoxic sediments. Limnol. Oceanogr. 1–15. doi:10.1002/lno.12001
DOI:
https://doi.org/10.1002/lno.12001
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