PANGAEA_884256 Benthic N2 production rates, Si cycling and environmental characteristics from the Öre estuary on the Swedish coast Hellemann, Dana; Tallberg, Petra; Hietanen, Susanna Benthic N2 production rates, Si cycling and environmental characteristics from the Öre estuary on the Swedish coast 2017-12-19 PANGAEA Dataset Supplement to: Hellemann, Dana; Tallberg, Petra; Bartl, Ines; Voss, Maren; Hietanen, Susanna (2017): Denitrification in an oligotrophic estuary: a delayed sink for riverine nitrate. Marine Ecology Progress Series, 583, 63-80, https://doi.org/10.3354/meps12359 https://doi.pangaea.de/10.1594/PANGAEA.884256 Investigator Dana Hellemann dana.hellemann@helsinki.fi Earth Science Event label Latitude of event Longitude of event Date/Time of event Cruise/expedition Station label DEPTH, water Depth, top/min Depth, bottom/max Size fraction > 1 mm, gravel Size fraction 1.000-0.500 mm, 0.0-1.0 phi, coarse sand Size fraction 0.500-0.250 mm, 1.0-2.0 phi, medium sand Size fraction 0.250-0.125 mm, 2.0-3.0 phi, fine sand Size fraction 0.125-0.063 mm, 3.0-4.0 phi, very fine sand Size fraction < 0.063 mm, mud, silt+clay Sediment type Description Porosity Comment Water content, wet mass Loss on ignition Permeability (earth science) Oxygen penetration depth Nitrate denitrification, total Nitrate denitrification from water column Nitrate denitrification from sediment nitrification Anammox rates Depth, description Amorphous, biogenic silicate, per dry mass Calcium extractable silicate, per dry mass Oxide bound silicate, per dry mass geoscientificInformation Multiple investigations Ore_estuary_20150421_N3 Ore_estuary_20150421_NB1 Ore_estuary_20150422_N6_1 Ore_estuary_20150422_N8 Ore_estuary_20150423_N10 Ore_estuary_20150423_N11 Ore_estuary_20150424_N5 Ore_estuary_20150424_N7 Ore_estuary_20150425_N14 Ore_estuary_20150425_NB8 Ore_estuary_20150804_N3 Ore_estuary_20150804_NB1 Ore_estuary_20150805_N34 Ore_estuary_20150805_N6_1 Ore_estuary_20150806_N10 Ore_estuary_20150806_N11 Ore_estuary_20150807_N5 Ore_estuary_20150807_NB8_1 Ore_estuary_20150808_N14 Ore_estuary_20150808_N7 Calculation according to Burdige 2006 after Risgaard-Petersen et al. 2003 (r-IPT) 2015-04-21 2015-08-08 Complete 63.451 63.522767 19.759 19.8563 15.6 m (DEPTH, water) 37.0 m (DEPTH, water) unrestricted CC-BY-3.0: Creative Commons Attribution 3.0 Unported English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 1763 data points text/tab-separated-values Burdige, David (2006): Geochemistry of marine sediments. Princeton University Press, Princeton, NJ Risgaard-Petersen, Nils; Meyer, Rikke Louise; Schmid, M C; Jetten, Mike S M; Enrich-Prast, Alex; Rysgaard, Søren; Revsbech, Niels Peter (2004): Anaerobic ammonium oxidation in an estuarine sediment. Aquatic Microbial Ecology, 36, 293-304, https://doi.org/10.3354/ame036293 Risgaard-Petersen, Nils; Nielsen, Lars Peter; Rysgaard, Søren; Dalsgaard, Tage; Meyer, Rikke Louise (2003): Application of the isotope pairing technique in sediments where anammox and denitrification coexist. Limnology and Oceanography-Methods, 1(1), 63-73, https://doi.org/10.4319/lom.2003.1.63 Risgaard-Petersen, Nils; Nielsen, Lars Peter; Rysgaard, Søren; Dalsgaard, Tage; Meyer, Rikke Louise (2004): Erratum: Application of the isotope pairing technique in sediments where anammox and denitrification co-exist. Limnology and Oceanography-Methods, 2(9), 315-315, https://doi.org/10.4319/lom.2004.2.315

Sediment samples for measuring N2 production and for the characterization of the sediment system were taken in spring and summer 2015 in the Öre Estuary at the Swedish coast of the Quark Strait, northern Baltic Sea. Sediment was sampled with a HAPS bottom corer (sand) and with a GEMINI twin corer (mud). The grain size of the sand sediment was analyzed via wet sieving from the sediment layers 0-1, 1-2, 2-3 cm (spring campaign) and 0-0.5, 0.5-1.0, 1.0-1.5 cm (summer campaign); due to vertical homogeneity, these surface sediments were subsequently pooled and the sediment type was classified after Wentworth (1922). Porosity and water content were analyzed both from sediment slices and from entire core subsamples, which means that sediment in a sampling core (heights 20 cm, iD 2.3 cm) was mixed and sub sampled, assuming vertical homogeneity; sediment was dried overnight at 105°C and calculations followed Burdige (2006). Sediment organic matter content was analyzed as loss on ignition (LOI), for which dried sediment was combusted at 550°C for 4h. Sediment permeability was measured from pooled surface sediments (~1-2 cm homogeneous surface layer) with a permeameter cell following the constant head method for laminar flow of water through granular soil; calculations were derived from Darcie's Law. The oxygen penetration depth (OPD) was determined by manual (spring) and automated (summer) profiling at bottom water temperature (electrode tip 100 µm). Denitrification rates were measured with the revised isotope pairing technique (r-IPT; Risgaard-Petersen et al. 2003, 2004) that accounts for the potential contribution of anammox (anaerobic ammonium oxidation) to total N2 production. Incubations were done in acrylic cores (heights 20 cm, iD 2.3 cm) in a concentration series of 30, 60, 90, 120 µM 15NO3- (n=3) for 4-5h at in situ bottom water temperature and darkness. Dw gives denitrification of nitrate from the water column; Dn gives denitrification of nitrate from sediment nitrification (coupled nitrification-denitrification). If no contribution of anammox to total N2 production was found, columns hold a zero (0). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.884256"!

http://en.wikipedia.org/wiki/Loss_on_ignition Loss on ignition http://en.wikipedia.org/wiki/Permeability_%28geology%29 Permeability (earth science) http://en.wikipedia.org/wiki/Porosity Porosity https://doi.org/10.3354/ame036293 Anaerobic ammonium oxidation in an estuarine sediment https://doi.org/10.3354/meps12359 Denitrification in an oligotrophic estuary: a delayed sink for riverine nitrate https://doi.org/10.4319/lom.2003.1.63 after Risgaard-Petersen et al. 2003 (r-IPT) https://doi.org/10.4319/lom.2003.1.63 Application of the isotope pairing technique in sediments where anammox and denitrification coexist https://doi.org/10.4319/lom.2004.2.315 Erratum: Application of the isotope pairing technique in sediments where anammox and denitrification co-exist DIF 9.4 2017-12-19 2026-09-01