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  • 2020-2024  (30)
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  • 1
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    Origin and fate of dissolved organic matter in four shallow Baltic Sea estuaries (2020)
    Springer International Publishing
    Details
    Publication Date: 2023-06-20
    Description: Coastal waters have strong gradients in dissolved organic matter (DOM) quantity and characteristics, originating from terrestrial inputs and autochthonous production. Enclosed seas with high freshwater input therefore experience high DOM concentrations and gradients from freshwater sources to more saline waters. The brackish Baltic Sea experiences such salinity gradients from east to west and from river mouths to the open sea. Furthermore, the catchment areas of the Baltic Sea are very diverse and vary from sparsely populated northern areas to densely populated southern zones. Coastal systems vary from enclosed or open bays, estuaries, fjords, archipelagos and lagoons where the residence time of DOM at these sites varies and may control the extent to which organic matter is biologically, chemically or physically modified or simply diluted with transport off-shore. Data of DOM with simultaneous measurements of dissolved organic (DO) nitrogen (N), carbon (C) and phosphorus (P) across a range of contrasting coastal systems are scarce. Here we present data from the Roskilde Fjord, Vistula and Öre estuaries and Curonian Lagoon; four coastal systems with large differences in salinity, nutrient concentrations, freshwater inflow and catchment characteristics. The C:N:P ratios of DOM of our data, despite high variability, show site specific significant differences resulting largely from differences residence time. Microbial processes seemed to have minor effects, and only in spring did uptake of DON in the Vistula and Öre estuaries take place and not at the other sites or seasons. Resuspension from sediments impacts bottom waters and the entire shallow water column in the Curonian Lagoon. Finally, our data combined with published data show that land use in the catchments seems to impact the DOC:DON and DOC:DOP ratios of the tributaries most.
    Description: Academy of Sciences of Finland
    Description: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
    Description: BONUS COCOA and Bundesministerium für Bildung und Forschung
    Description: Academy of Finland
    Description: Danish Research Council for Independent Research
    Description: BONUS COCOA Project
    Description: Leibniz-Institut für Ostseeforschung Warnemünde (IOW) (3484)
    Keywords: ddc:551.9 ; Coastal systems ; Dissolved organic matter ; Riverine input ; Baltic Sea
    Language: English
    Type: doc-type:article
    Location Call Number Limitation Availability
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    CITATION GEO-LEO
  • 2
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    Silicon isotopes data in sponge spicules and radiolarian tests from ODP hole 1051B over the PETM (2020)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Description: This dataset contains stable Si isotope values from radiolarian tests and sponge spicules analyzed on MC-ICP-MS and SIMS. These are in association with a study aiming at investigating the changes to the Si cycle during the Paleocene-Eocene Thermal Maximum from siliceous microfossils from ODP hole 1051B.
    Keywords: 171-1051B; Age, relative; Blake Nose, North Atlantic Ocean; Depth, composite; DRILL; Drilling/drill rig; Joides Resolution; Laboratory; Leg171B; Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS); Number; PETM; Radiolarians; Radiolarians, δ30Si; Radiolarians, δ30Si, standard deviation; Sample code/label; Secondary ion mass spectrometry (SIMS); silicon isotope; sponge; Sponge spiculae, δ30Si; Sponge spiculae, δ30Si, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 676 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Benthic nitrate reduction process rates from around the Baltic Sea (May 2016) (2021)
    PANGAEA
    Details
    Publication Date: 2024-01-24
    Description: Nitrate reduction process rates (denitrification, dissimilatory nitrate reduction to ammonium rate - DNRA, anammox) were collected during a research cruise to the Baltic Sea during May-June 2016 as part of the Vici Project “Response of the Iron Biogeochemical Cycle on Continental Shelves to Seawater Deoxygenation” and the BONUS-COCOA project. Sediment sampling and incubation experiments were carried out onboard the RV Pelagia (NIOZ, Netherlands, cruise 64PE411). Whole cores were incubated on board at in situ bottom water temperature and oxygen conditions in the dark. Stable isotopically labelled nitrate (15N-NO3-) was added to overlying water and cores were capped according to Nielsen et al. (1992). Three cores were 'sacrificed' over time (2, 4h, 6h, 8h) after 15-NO3- addition by slurrying the surface and sampling for dissolved gas and solutes. Slurry experiments were also carried out in parallel to core incubations at each site (Risgaard-Petersen et al., 2003; Song et al., 2013). Analysis of 15N compounds was carried out at the University of Southern Denmark (Dalsgaard et al., 2013). Process rates were calculated according to Song et al. (2016). In addition to the calculated process rates, the dataset includes the following in situ parameters: bottom water salinity, temperature and oxygen (obtained from CTD sensors), nitrate (measured spectrophotometrically according to Schnetget and Lehners, 2014) and total organic carbon data (derived from Hermans et al., 2019).
    Keywords: 64PE411; 64PE411_St1_PLU15_005; 64PE411_St10_LL3A; 64PE411_St13_LF1; 64PE411_St17_LL19; 64PE411_St21_BY2; 64PE411_St22_IODP-BY5; 64PE411_St3_PLU15_002; 64PE411_St4_F64; 64PE411_St9_GOF5; anammox; Anammox rate; Anammox rate, nitrogen production; Anammox rate, standard error; Baltic Fe; Baltic Sea; BONUS-COCOA; Calculated according to Song et al. (2016); Carbon, organic; CTD, Sea-Bird, SBE 911; DATE/TIME; Denitrification; Denitrification/Dissimilatory nitrate reduction to ammonium ratio; Denitrification rate; Denitrification rate, standard error; DEPTH, water; Derived from Hermans et al. (2019); Dissimilatory nitrate reduction to ammonium rate; Dissimilatory nitrate reduction to ammonium rate, standard error; DNRA; eutrophication; Event label; Gulf of Bothnia; Gulf of Finland; Identification; LATITUDE; Location; LONGITUDE; MUC; MultiCorer; Nitrate; Nitrate denitrification from sediment nitrification; Nitrate denitrification from sediment nitrification, standard error; Nitrate denitrification from water column; Nitrate denitrification from water column, standard error; nitrate reduction; Nitrate reduction rate, total; Nitrogen, total; Nitrogen, total, standard error; nitrogen cycling; Nutrient cocktails in the coastal zone of the Baltic Sea; Oxygen; Pelagia; Salinity; sediment; Spectrophotometry according to Schnetger and Lehners (2014); Station label; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 201 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Radiocarbon ages of sediment cores from Lake 850 (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-05
    Description: ¹⁴C data and age-depth models based on ¹⁴C data from two cores sampled from Lake 850 in 1999 and 2019. Radiometric dates were calibrated with IntCal20 radiocarbon calibration dataset (Reimer et al. 2020). For age-depth models calculated using R package Bacon see doi:10.1594/PANGAEA.933325. Lake850-Core3-1999 data are from Shemesh et al., 2001.
    Keywords: 14C age; Age, 14C AMS; Age, dated; Age, dated standard error; DEPTH, sediment/rock; Event label; Lake850-Core2-2019; Lake850-Core3-1999; PC; Piston corer; Sample ID; Sample thickness; Sweden
    Type: Dataset
    Format: text/tab-separated-values, 52 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Dissolved silicon isotopes in water from Lake 850, Sweden (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-14
    Description: Stable silicon isotopes were measured on water samples taken in March, June, July, August and September 2019 in Lake 850, Northern Sweden. Water samples for stable Si isotopes were sampled in HDPE acid-washed 125ml Naglene bottles and filtered directly in the field through 0.45μm Sterivex filter and further acidified using HCl to pH 2. Stable silicon isotopes were performed on cation-exchange collumn cleaned (Georg et al., 2006) samples using MC-ICP-MS at Vegacenter, Stockholm.
    Keywords: Calculated; Date; DATE/TIME; DEPTH, water; Discharge; dissolved silicon; Event label; LATITUDE; Lille_Bror_inlet_1; Lille_Bror_inlet_2; Lille_Bror_lake; Lille_Bror_outlet; LONGITUDE; Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS); Number of measurements; Sample ID; Silicon isotopes; Station label; Sweden; Water sample; WS; δ29Si, silicon dissolved; δ29Si, standard deviation; δ30Si, silicon dissolved; δ30Si, standard deviation; δ30Si/δ29Si; δ30Si/δ29Si, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 240 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Depth-age model based on Lead-210 chronology of short sediment core from Lake 850, Sweden (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-14
    Description: Concentrations of lead 210 (210Pb) were used for dating of a short sediment core, which was taken in March 2019 from ice-covered lake. The core 210Pb concentrations were analyzed using ORTEC high-prurity germanium detector at Lund university and R package Plum was used to build the age-depth model.
    Keywords: 210Pb dates; Age; AGE; Age, 210Pb; Caesium-137; Density, dry bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Gamma spectroscopy; GC; Gravity corer; Laboratory code/label; Layer thickness; Lead-210; Lead-210, standard deviation; Lead-210 excess; Lead-210 excess, standard deviation; Lille_Bror_core_1; Radium-226; Radium-226, standard deviation; Sweden
    Type: Dataset
    Format: text/tab-separated-values, 215 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Total organic carbon, biogenic silica concentrations, total nitrogen concentrations and carbon nitrogen ratios in short sediment core from Lake 850, Sweden (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-14
    Description: Total organic carbon (TOC), biogenic silica (BSi) concentrations, total nitrogen (TN) concentrations and carbon nitrogen ratios (C/N) from short sediment core, which was taken in March 2019 from ice-covered lake are presented. The sediment core analyzes of TOC, TN and C/N were measured on 5 to 10 mg of freeze-dried sediment using elemental analyzer COSTECH ECS4010. The biogenic silica concentrations were determined using weak alkaline extraction by Conley and Schelske (2001) using 30mg of freeze-dried sediment reacting with 40ml of 0.1M Na2CO3 for 5 hours. The DSi concentration in the extracted aliqote was measured using molybdate blue method (Strickland and Parsons, 1972) using Smartchem 200, AMS System descrete analyzer.
    Keywords: Calculated; Carbon, organic, total; Carbon, organic, total, standard error; Carbon/Nitrogen ratio; Density, dry bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Element analyser CHN, Costech; GC; Gravity corer; Lille_Bror_core_1; Nitrogen, total; Nitrogen, total, standard error; Opal, biogenic silica; Opal, biogenic silica, error; Porosity, fractional; Smartchem analyser (spectrophotometric detection); Sweden
    Type: Dataset
    Format: text/tab-separated-values, 146 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Summary of dissolved silicon concentration and discharge from the inlets and the outlet stream of Lake 850, Northern Sweden (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-14
    Description: The stream discharges and dissolved silicon (DSi) concentrations measured on water samples taken in June, July, August and September 2019 in Lake 850, Northern Sweden.
    Keywords: biogenic silica; DATE/TIME; diatoms; Discharge; dissolved silicon; Event label; Lake850; Lake850_inlet; Lake850_outlet; LATITUDE; Location; LONGITUDE; Silica, dissolved; Silica, dissolved, standard deviation; Silicon isotopes
    Type: Dataset
    Format: text/tab-separated-values, 40 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Raw XRF data of piston sediment core Lake850-Core2-2019 from Lake 850, Sweden (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-14
    Description: Data contains elemental composition (Al, Si, P, S, Ar, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ge, Se, Br, Rb, Sr, Y, Zr, Nb, Mo, Te, Ba, La, Ce, Nd, Sm, Eu, Tb, Er, Tm, Yb, Hf, Ir, Pt, Au, Pb, Rn och, Rh inc, MS) of the sediment core from 2019 originating from ITRAX CS37 XRF from GLOBE Institute, Copenhagen University.
    Keywords: Aluminium; Argon; Barium; Bromine; Calcium; Cerium; Chromium; Coherence; Copper; DEPTH, sediment/rock; Erbium; Europium; Germanium; Gold; Hafnium; Identification; Incoherence; Intensity, total; Iridium; Iron; Lake850-Core2-2019; Lanthanum; Lead; Manganese; Molybdenum; Neodymium; Nickel; Niobium; PC; Phosphorus; Piston corer; Platinum; Position, length; Potassium; Rubidium; Samarium; Selenium; Silicon; Strontium; Sulfur; Tellurium; Terbium; Thulium; Titanium; Vanadium; X-ray fluorescence ITRAX core scanner; XRF data; Ytterbium; Yttrium; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 30060 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Depth-age models based on radiocarbon dating of sediment cores from Lake 850 (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-14
    Description: ¹⁴C data and age-depth models are based on ¹⁴C data from two cores sampled from Lake 850 in 1999 and 2019. Radiometric dates were calibrated with IntCal20 radiocarbon calibration dataset (Reimer et al. 2020), see doi:10.1594/PANGAEA.933321. Age-depth models are calculated using R package Bacon (Blaauw et al, 2021).
    Keywords: 14C age; BACON age modeling; Calendar age; Calendar age, maximum/old; Calendar age, minimum/young; DEPTH, sediment/rock; Event label; Lake850-Core2-2019; Lake850-Core3-1999; PC; Piston corer; Sedimentation rate per year; Sweden
    Type: Dataset
    Format: text/tab-separated-values, 959 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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