Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 University of Waikato, New Zealand https://ror.org/013fsnh78 Chow Kelly kellychow2003@gmail.com University of Waikato, New Zealand https://ror.org/013fsnh78 Isson Terry terry.isson@waikato.ac.nz University of Waikato, New Zealand https://ror.org/013fsnh78 Schipper Louis A 0000-0001-9899-1276 University of Waikato, New Zealand https://ror.org/013fsnh78 2026 Temperature and glucose effects on dunite weathering, dissolved inorganic carbon, and CO₂ fluxes in soil incubations (5–50 °C) dataset https://doi.org/10.1594/PANGAEA.993389 2026-06-08T09:34:38 This dataset reports measurements from soil incubations examining the effects of temperature (5–50 °C, 18 increments) and labile organic carbon (glucose) on dunite weathering, dissolved inorganic carbon (DIC) production, and CO₂ fluxes. Treatments included soil alone, soil + dunite, soil + glucose, and soil + dunite + glucose, which were incubated for three days. Raw data include dissolved inorganic and organic carbon (DIC and DOC) concentrations, headspace CO₂, pH, total alkalinity, and dissolved cations (Ca²⁺, Mg²⁺, Na⁺ and K⁺). Calculated weathering rates and the 'seacarb' calculated bicarbonate and carbonate sum (DIC species minus dissolved CO₂) are also reported (Gattuso et al., 2024). The incubations were performed on a heat block with 18 wells, one end was cooled and the other heated providing a temperature gradient. Temperature loggers (DS1921G Thermochron iButton, Analog Devices, Inc., USA) were placed in wells 1, 4, 7, 9, 11, 13, 15, and 18, and the temperatures of the remaining wells were calculated via linear regression. Each treatment was run separately on the temperature block. The treatment vessels were sealed periodically (time = 0–6 h, 24–30 h and 48–54 h) and samples were collected for analysis (described below). The water from all the vials for each treatment was collected then centrifuged at 3300 rpm for 10 minutes (Kubota 8420, Japan). Subsamples were taken for alkalinity (via titration to pH 4.2 with 0.01 mol/l HCl) and pH measurements (10 ml) (SI Analytics Titroline 7000); and dissolved inorganic (DIC) and organic carbon (DOC) measurements (10 ml) (OI Analytical Aurora 1030 TOC analyser, Xylem, USA). A 5–10 mL subsample was also taken, filtered to 0.45 µm and acidified to 2 % v/v with HNO₃, for Mg, Ca, K, and Na analysis via ICP-MS (Agilent 8900 ICP−MS, Agilent Technologies, California, USA). Alkalinity titrations provided the moles of H⁺ for the samples (gravimetrically determined volume) to reach pH 4.2. The moles of H⁺ were converted to meq and divided by the sample volume. DIC and DOC analyses were performed alongside a gravimetrically produced calibration set of Potassium Hydrogen Phthalate, via wet oxidation which provided CO₂ peak area. Peak area was plotted against the known molar concentrations of the calibration set, and a linear regression was used to solve for the unknown sample molar concentrations. Dissolved cations (Ca²⁺, Mg²⁺, Na⁺ and K⁺) measured via ICP−MS were converted from µg/l to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations. Headspace CO₂ samples were measured alongside known volumes of high purity (>99%) CO₂, which were used for calibration standards, as peak area in mV. The moles of CO₂ in the standards were calculated using the known volume, pressure and the ideal gas law, the peak area of the samples used to solve for moles against the linear calibration. The measured sample (moles) were converted to mmol/l by dividing by the volume injected into the analyser, which was subsequently multiplied by the headspace volume of the treatment vessels to get the moles of CO₂ reported here. Seacarb (flag 8, salinity = 0) was used to calculate the total alkalinity based bicarbonate and carbonate for soil + dunite and soil + dunite + glucose, after subtracting the total alkalinity of soil and soil + glucose respectively. Seacarb (flag 9, salinity = 0) was also used to calculate the DIC based bicarbonate and carbonate for soil + dunite and soil + dunite + glucose, after subtracting the DIC of soil and soil + glucose respectively. Weathering rates were calculated using the net total cation sums (i.e. ∑[Mg²⁺], [Ca²⁺], [K⁺], [Na⁺]). The total cation sums for soil alone and soil + glucose were subtracted from the total cation sums of soil + dunite and soil + dunite + glucose respectively, to provide net total cation sum. The net cation molar sum was divided by the specific surface area (m² g⁻¹), dunite mass (g) and t = time (s), to provide weathering rates which were subsequently log transformed. Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Chow Kelly kellychow2003@gmail.com Isson Terry terry.isson@waikato.ac.nz Schipper Louis A 0000-0001-9899-1276 submitted Temperature dependence of dunite weathering in soil journal article Geochemistry Amann Thorben science@thorbenamann.de 0000-0001-9347-0615 Hartmann Jens geo@hattes.de 0000-0003-1878-9321 Hellmann Roland Pedrosa Elisabete Trindade Malik Aman 0000-0002-7310-8448 2022 Enhanced weathering potentials—the role of in situ CO2 and grain size distribution journal article Frontiers in Climate 4 https://doi.org/10.3389/fclim.2022.929268 929268 Gattuso Jean-Pierre jean-pierre.gattuso@imev-mer.fr 0000-0002-4533-4114 Epitalon Jean-Marie Lavigne Héloïse hlavigne@naturalsciences.be 0009-0006-6766-0638 Orr James James.Orr@lsce.ipsl.fr Gentili Bernard bernard.gentili@orange.fr http://omtab.obs-vlfr.fr/personnes/z_gent_be/gentili.php Hagens Mathilde 0000-0003-3980-1043 Hofmann Andreas Mueller Jens-Daniel Proye Aurélien Rae James 0000-0003-3904-2526 Soetaert Karline karline.soetaert@nioz.nl 0000-0003-4603-7100 2024 seacarb: seawater carbonate chemistry with R. R package version 3.3.3 other https://cran.r-project.org/web/packages/seacarb/index.html 175.568602 175.568602 -37.561184 -37.561184 175.568602 -37.561184 2024-09-13T22:41:00 2024-09-13T22:41:00 0.1 0.1 uncoded table Royal Society of New Zealand http://www.royalsociety.org.nz/ https://doi.org/10.13039/501100001509 RFT-UOW2201-PD Rutherford Foundation Postdoctoral Fellowship Soil_field_sample -37.561184 175.568602 Springdale, North Island, New Zealand 11.0 2024-09-13T22:41:00 Soil corer Depth, soil: 0.1 m 1295 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ File contains all raw (aq) and (g) phase data. Each line corresponds to and experimental treatment. Calculated values (e.g. weathering rates) are also provided. Soil sampling data includes decimal coordinates, elevation, sample depth and sample time. Event label Event Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Event DEPTH, soil Depth soil m depth http://purl.obolibrary.org/obo/PATO_0001595 soil http://purl.obolibrary.org/obo/ENVO_00001998 Length L http://dbpedia.org/resource/Length Soil corer Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Origin of soil field sample Depth soil [m] (Origin of soil field sample, ...) Type of study Study type type Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Study type Experimental treatment Exp treat Incubation of surface soil/sediment, ex-situ Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Exp treat (Incubation of surface soil/se...) Treatment Treat treatment Soil alone or in combination with added dunite and glucose Treat (Soil alone or in combination ...) Treatment: temperature T:temp °C treatment Temperature Θ http://dbpedia.org/resource/Temperature Temperature controlled by heat block; monitored by temperature loggers, Analog Devices, DS1921G Thermochron iButton Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 T:temp [°C] (Temperature controlled by hea...) Incubation duration Inc dur days Time T http://dbpedia.org/resource/Time Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Inc dur [days] pH pH pH meter; mounted in an automatic titrator, SI Analytics, TitroLine™ 7000 Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 pH (pH meter; mounted in an autom...) Alkalinity, total AT mEq/l total https://www.oxforddictionaries.com/definition/american_english/total Molar Concentration Automatic titrator, SI Analytics, TitroLine™ 7000; titration to pH = 4.2, using 0.01 mol/l HCl Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 AT [mEq/l] (Automatic titrator, SI Analyt...) Carbon, inorganic, dissolved DIC mmol/l carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 dissolved http://purl.obolibrary.org/obo/PATO_0001986 Molar Concentration Total Organic Carbon Analyzer, Xylem, OI Analytical Aurora 1030C TOC Analyzer Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 DIC [mmol/l] (Total Organic Carbon Analyzer...) Carbon, organic, dissolved DOC mmol/l carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 organic dissolved http://purl.obolibrary.org/obo/PATO_0001986 Molar Concentration Total Organic Carbon Analyzer, Xylem, OI Analytical Aurora 1030C TOC Analyzer Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 DOC [mmol/l] (Total Organic Carbon Analyzer...) Sodium Na+ mmol sodium Amount of Substance N http://dbpedia.org/resource/Amount_of_substance ICP-MS, Agilent Technologies, Agilent 8900 Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Measured concentrations in µg/l were converted to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations Na+ [mmol] (Measured concentrations in µg...) Magnesium' Mg+ mmol magnesium Amount of Substance N http://dbpedia.org/resource/Amount_of_substance ICP-MS, Agilent Technologies, Agilent 8900 Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Measured concentrations in µg/l were converted to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations Mg+ [mmol] (Measured concentrations in µg...) Potassium K+ mmol potassium K Amount of Substance N http://dbpedia.org/resource/Amount_of_substance ICP-MS, Agilent Technologies, Agilent 8900 Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Measured concentrations in µg/l were converted to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations K+ [mmol] (Measured concentrations in µg...) Calcium Ca2+ mmol calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 Amount of Substance N http://dbpedia.org/resource/Amount_of_substance ICP-MS, Agilent Technologies, Agilent 8900 Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Measured concentrations in µg/l were converted to mmol using the atomic mass and solution volume of the treatment, for weathering rate calculations Ca2+ [mmol] (Measured concentrations in µg...) Carbon dioxide CO2 mol carbon dioxide http://purl.obolibrary.org/obo/CHEBI_16526 Amount of Substance N http://dbpedia.org/resource/Amount_of_substance Calculated average/mean values Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Average CO₂ concentration in the headspace over 3 days of incubation; average calculated using the daily rates of CO₂ production [mmol/g/h] CO2 [mol] (Average CO₂ concentration in ...) Carbon dioxide CO2 mol carbon dioxide http://purl.obolibrary.org/obo/CHEBI_16526 Amount of Substance N http://dbpedia.org/resource/Amount_of_substance ICP-MS, Agilent Technologies, Agilent 8900; measured in the headspace after 1 day of incubation Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Day 1: CO₂ in the headspace; vials were sealed for the first 6 hours (time 0–6) to measure CO₂. CO2 [mol] (Day 1: CO₂ in the headspace; ...) Carbon dioxide CO2 mol carbon dioxide http://purl.obolibrary.org/obo/CHEBI_16526 Amount of Substance N http://dbpedia.org/resource/Amount_of_substance ICP-MS, Agilent Technologies, Agilent 8900; measured in the headspace after 2 days of incubation Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Day 2: CO₂ in the headspace; vials were sealed for the first 6 hours (time 24–30) to measure CO₂. CO2 [mol] (Day 2: CO₂ in the headspace; ...) Carbon dioxide CO2 mol carbon dioxide http://purl.obolibrary.org/obo/CHEBI_16526 Amount of Substance N http://dbpedia.org/resource/Amount_of_substance ICP-MS, Agilent Technologies, Agilent 8900; measured in the headspace after 3 days of incubation Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Day 3: CO₂ in the headspace; vials were sealed for the first 6 hours (time 48–54) to measure CO₂. CO2 [mol] (Day 3: CO₂ in the headspace; ...) Weathering rate, dunite Weath rate dunite log10 mol/m**2/s Calculated according to Amann et al. (2022) Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Weathering rate, dunite [log mol/m**2/s] Weath rate dunite [log10 mol/m**2/s] (Weathering rate, dunite [log ...) Alkalinity, total AT mmol(Eq)/l total https://www.oxforddictionaries.com/definition/american_english/total Molar Concentration Calculated with seacarb package in R version 3.3.3 (Gattuso et al, 2024) Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Total alkalinity; seacarb calculated bicarbonate and carbonate sum ([[HCO₃⁻] + [CO₃²⁻]) AT [mmol(Eq)/l] (Total alkalinity; seacarb cal...) Carbon, inorganic, dissolved DIC mmol/l carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 dissolved http://purl.obolibrary.org/obo/PATO_0001986 Molar Concentration Calculated with seacarb package in R version 3.3.3 (Gattuso et al, 2024) Corbett Thomas corbett.tdw@gmail.com 0000-0001-6943-0373 Dissolved inorganic carbon; seacarb calculated bicarbonate and carbonate sum ([HCO₃⁻] + [CO₃²⁻]) DIC [mmol/l] (Dissolved inorganic carbon; s...) CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable GFBio NFDI4BioDiversity author105628 author116516 author116517 author117574 author117575 author117576 author22144 author22159 author27217 author34379 author39204 author44161 author51658 author56746 author59171 author59172 author59173 author63953 author66472 author69140 award4922 curlevel30 event3364068 funder21036 geocode143506 geocode1599 geocode1600 geocode1601 geocode8128 inst21575 journal16795 journal17053 license21 method12958 method13514 method18949 method18950 method18951 method19031 method19032 method19033 method19034 method19129 method19130 method223 method4698 param105163 param106858 param120848 param185520 param536453 param548539 param560619 param560625 param560626 param560627 param560628 param560629 param762 param764 param82404 param96278 pi105628 ref124625 ref139878 ref139879 term1073131 term1073490 term1073493 term233 term38253 term38477 term38520 term38526 term40134 term40665 term41013 term41048 term43762 term43863 term43972 term43975 term44030 term44419 term49506 term54505 term77372 topotype11