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Benthic fluxes and sediment properties in the Eastern Gotland Basin, Baltic Sea, following a major Baltic inflow
Citable as data publication
Hylén, A.; van de Velde, S. J.; Kononets, M.; Luo, M.; Almroth-Rosell, E.; Hall, P. O. J.; Department of Marine Sciences. University of Gothenburg; Oceanographic Research. Swedish Meteorological and Hydrological Institute: Sweden; Department of Earth and Planetary Sciences. University of California Riverside: USA; Research group Analytical, Environmental and Geochemistry. Vrije Universiteit Brussel: Belgium; (2021): Benthic fluxes and sediment properties in the Eastern Gotland Basin, Baltic Sea, following a major Baltic inflow. Marine Data Archive. https://doi.org/10.14284/442

Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

Description
The data contains benthic fluxes and sediment properties from the normally anoxic Eastern Gotland Basin in Baltic Sea, following an inflow of oxygenated water (a major Baltic inflow). more

Three sites were visited in April 2016, 2017 and 2018. During each visit, sediment cores were collected for analysis of dissolved inorganic phosphorus (DIP) in the pore water and benthic fluxes of DIP, dissolved inorganic nitrogen (DIN), dissolved inorganic silica (DSi) and dissolved inorganic carbon (DIC) were measured using benthic chamber landers. In 2016 and 2017, duplicate sediment cores were collected for sequential phosphorus extraction. In 2017 and 2018, sediment samples were collected for analysis of chlorophyll a content. The dataset further contains previously published data of benthic fluxes, pore-water DIP and chlorophyll a from 2008, 2010 and 2015 (Viktorsson et al. 2013, https://doi.org/10.5194/bg-10-3901-2013; Hall et al. 2017, https://doi.org/10.3389/fmars.2017.00027; Nilsson et al. 2019; https://doi.org/10.1016/j.marchem.2018.11.004.

Scope
Themes:
Biology > Pigments (e.g. chlorophyll), Geology - Geophysics - Sedimentation > Sediments - rocks - pore waters, Water composition > Dissolved gases, Water composition > Nutrients
Keywords:
Brackish water, Benthic fluxes, Chlorophylls, Dissolved inorganic carbon, Dissolved oxygen, Nitrogen, Phosphorus, Pore water, ANE, Baltic, Baltic Proper

Geographical coverage
ANE, Baltic, Baltic Proper [Marine Regions]

Temporal coverage
2008 - 25 April 2018

Parameters
Chlorophyll a Methodology , Dissolved inorganic carbon (DIC) Methodology , Dissolved inorganic nitrogen (DIN) Methodology , Dissolved inorganic phosphorus (DIP) Methodology , Dissolved oxygen (O2) Methodology , Dissolved Silica Methodology , Pore-water dissolved organic phosphorus (DIP) Methodology , Salinity Methodology , Solid phase phosphorus Methodology , Temperature Methodology
Chlorophyll a: Extraction in an acetone:methanol (80:20) solution at -20°C for 24 hours followed by high performance liquid chromatography
Dissolved inorganic carbon (DIC): Benthic fluxes measured with the Gothenburg benthic chamber lander (Kononets et al., 2021, JMarSys), DIC concentrations measured by non-dispersive IR spectrometry (Nilsson et al., 2019, MarChem)
Dissolved inorganic nitrogen (DIN): Benthic fluxes measured with the Gothenburg benthic chamber lander (Kononets et al., 2021, JMarSys), DIN concentrations measured by segmented flow colorimetric analysis (Koreleff, F. Determination of Nutrients. In Methods of seawater analysis,1983)
Dissolved inorganic phosphorus (DIP): Benthic fluxes measured with the Gothenburg benthic chamber lander (Kononets et al., 2021, JMarSys), DIP concentrations measured by segmented flow colorimetric analysis (Koreleff, F. Determination of Nutrients. In Methods of seawater analysis,1983)
Dissolved oxygen (O2): Oxygen Optode model 3830, Aanderaa Data Instruments
Dissolved Silica: Benthic fluxes measured with the Gothenburg benthic chamber lander (Kononets et al., 2021, JMarSys), Dsi concentrations measured by segmented flow colorimetric analysis (Koreleff, F. Determination of Nutrients. In Methods of seawater analysis,1983)
Pore-water dissolved organic phosphorus (DIP): Sample collection by Rhizons (Rhizosphere research products), DIP concentrations measured by segmented flow colorimetric analysis (Koreleff, F. Determination of Nutrients. In Methods of seawater analysis,1983)
Salinity: Conductivity sensor model 3919, Aanderaa Data Instruments
Solid phase phosphorus: SEDEX (Ruttenberg, 1992, L&O)
Temperature: Conductivity sensor model 3919, Aanderaa Data Instruments

Contributors
Swedish Meteorological and Hydrological Institute (SMHI), moredata creator
University of California, Riverside, moredata creator
University of Gothenburg; Faculty of Science; Department of Marine Sciences, moredata creator
Vrije Universiteit Brussel; Faculteit Wetenschappen & Bio-ingenieurswetenschappen; Vakgroep Chemie; Analytical, Environmental and Geochemistry (AMGC), moredata creator

Publication
Based on this dataset
Hylén, A. et al. (2021). Deep-water inflow event increases sedimentary phosphorus release on a multi-year scale. Biogeosciences 18(9): 2981-3004. https://hdl.handle.net/10.5194/bg-18-2981-2021, more

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2021-01-06
Information last updated: 2021-05-20
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