Johannes R. Krause jkrause@fiu.edu Johannes R. Krause author Chantha Chroeng author Matt Glue author Lim Mesa author Tharamony Ngoun author Chandara Tak author Daniel T.I. Bayley author James W. Fourqurean author 2025 Database of 25 seagrass-associated sediment cores from Chrouy Pros Bay, Gulf of Thailand, Cambodia, collected in 2024. This dataset accompanies the publication ‘The influence of seagrass traits and environmental controls on soil organic carbon stocks in Chouy Pros Bay, Cambodia’ (doi: 10.1016/j.scitotenv.2025.180000). Sediment core information includes organic carbon, inorganic carbon, nitrogen, and phosphorus contents, dry bulk density, and organic carbon stable isotope ratios. Seagrass aboveground biomass, belowground biomass, and shoot density were assessed via three biomass cores from within 10m of the sediment coring location. Field data collection and laboratory methods followed the ‘CariCAS’ protocols, accessible at 10.25148/merc_fac.2024.32 seagrass carbon stock nutrient biomass shoot densities This dataset is listed under a Creative Commons BY 4.0 and can be used with attribution. https://creativecommons.org/licenses/by/4.0/ PD12 103.10415 103.10415 11.34269 11.34269 PD19 103.108333 103.108333 11.31125 11.31125 PD20 103.111361 103.111361 11.306722 11.306722 PD22 103.097639 103.097639 11.302444 11.302444 PD23 103.033639 103.033639 11.369278 11.369278 PD24 103.031083 103.031083 11.361194 11.361194 PD25 103.029389 103.029389 11.354889 11.354889 PD3 103.061444 103.061444 11.407667 11.407667 PD6 103.064944 103.064944 11.394861 11.394861 PD8 103.078639 103.078639 11.398194 11.398194 PS1 103.052306 103.052306 11.426333 11.426333 PS10 103.088611 103.088611 11.369778 11.369778 PS11 103.095417 103.095417 11.349972 11.349972 PS13 103.115917 103.115917 11.344861 11.344861 PS14 103.11725 103.11725 11.338972 11.338972 PS15 103.1275 103.1275 11.34625 11.34625 PS16 103.12925 103.12925 11.336778 11.336778 PS17 103.126528 103.126528 11.329639 11.329639 PS18 103.137472 103.137472 11.332139 11.332139 PS2 103.056861 103.056861 11.418583 11.418583 PS21 103.104972 103.104972 11.304333 11.304333 PS4 103.054806 103.054806 11.402194 11.402194 PS5 103.070139 103.070139 11.405389 11.405389 PS7 103.083528 103.083528 11.411861 11.411861 PS9 103.087028 103.087028 11.384528 11.384528 2024-05-07 2024-05-11 Species Halodule pinifolia Johannes R. Krause jkrause@fiu.edu Krause_et_al_2025_sites sites information for study Krause_et_al_2025_sites.csv column , study_id Unique identifier for the study made up of the first author's family name, as well as the second author's family name or et al. if more than three, then publication year separated by underscores. string Free text site_number Numeric site identifier float number integer site_id Alphanumeric site identifier string Free text site_latitude Latitude float degree real site_longitude Longitude float degree real Depth Depth class derived from Site names: Deep= Depth>1m, Shallow= Depth<1m string Free text Shoot_density Average number of shoots derived across all biomass cores at a site (typically 3 cores) and normalized to an area of one m2 float numberPerMeterSquared real SD_shoot_density Standard deviation of shoot densities at site float numberPerMeterSquared real Mean_ABG_biomass Average above-ground biomass (dry weight) derived from all biomass cores at a site (typically 3 cores) and normalized to an area of one m2 float gramsPerSquareMeter real SD_ABG Standard deviation of above-ground biomass at site float gramsPerSquareMeter real Mean_BLG_biomass Average below-ground biomass (dry weight) derived from all biomass cores at a site (typically 3 cores) and normalized to an area of one m2 float gramsPerSquareMeter real SD_BLG Standard deviation of below-ground biomass at site float gramsPerSquareMeter real Min_sed_depth Minimum known sediment depth from field measurement with metal stake float centimeter real Core_length Total length of sediment core float centimeter real Corg_stock_meas Organic carbon stock in core float megagramsPerHectare real Corg_stock_1m Organic carbon stock in core normalized to 1m depth float megagramsPerHectare real ABG_biomass_per_shoot Aboveground seagrass biomass per shoot, average of 3 biomass cores per site float gram real Total_biomass_per_shoot Total seagrass biomass per shoot, average of 3 biomass cores per site float gram real Mean_d13C Mean carbon stable isotope ratio of all subcores at a site float permil real Seagrass_contribution Estimated seagrass-derived portion of sedimentary organic carbon, derived from stable carbon istope data using a 2-endmember mixing model (seagrass and mangrove/terrestrial) float percent real Mangrove_contribution Estimated mangrove/terrestrial-derived portion of sedimentary organic carbon, derived from stable carbon istope data using a 2-endmember mixing model (seagrass and mangrove/terrestrial) float percent real Krause_et_al_2025_biomass_cores biomass_cores information for study Krause_et_al_2025_biomass_cores.csv column , study_id Unique identifier for the study made up of the first author's family name, as well as the second author's family name or et al. if more than three, then publication year separated by underscores. string Free text site_id Alphanumeric site identifier string Free text biomass_core_id Alphanumeric biomass core identifier string Free text Species Seagrass species at coring location string Free text Shoot_count Number of seagrass shoots in core float number real ABG_Tare_weight Weight of empty tare float gram real ABG_Tare_and_Sample_dry_weight Weight of tare and above-ground biomass sample float gram real ABG_biomass Weight of above-ground biomass float gram real BLG_Tare_weight Weight of empty tare float gram real BLG_Tare_and_Sample_dry_weight Weight of tare and below-ground biomass sample float gram real BLG_biomass Weight of below-ground biomass float gram real Shoots_m2 Number of shoots in core, normalized to an area of one m2 float numberPerMeterSquared real ABG_biomass_DW_m2 Dry weight of above-ground biomass in core, normalized to an area of one m2 float gramsPerSquareMeter real BLG_biomass_DW_m2 Dry weight of below-ground biomass in core, normalized to an area of one m2 float gramsPerSquareMeter real core_notes Additional information string Free text Krause_et_al_2025_depthseries depthseries information for study Krause_et_al_2025_depthseries.csv column , study_id Unique identifier for the study made up of the first author's family name, as well as the second author's family name or et al. if more than three, then publication year separated by underscores. string Free text year Year of sample collection. float nominalYear integer month Numeric month of year of sample collection. float nominalMonth integer day Numeric day of month of sample collection. float nominalDay integer site_id Alphanumeric site identifier string Free text Min_sed_depth Minimum known sediment depth from field measurement with metal stake float centimeter real latitude Latitude at site estimated from map float degree real longitude Longitude at site estimated from map float degree real Seagrass_species Seagrass species at coring location string Free text Vial_ID Alphanumeric sample vial identifier string Free text Vial_weight Initial weight of empty vial float gram real Vial_and_sample_weight Weight of vial with dried sample float gram real Sample_weight Weight of dried sample float gram real Subcore_volume Volume of subcore sample float cubicCentimeter real Depth_center Depth from the sediment surface at which subcore was extracted float centimeter real Depth_min Upper boundary of subcore interval float centimeter real Depth_max Lower boundary of subcore interval float centimeter real Interval_thickness Thickness of subcore interval float centimeter real DBD Dry bulk density of sediment sample float gramsPerCubicCentimeter real LOI Loss on Ignition (by mass) float percent real Sed_Ctot Sediment total carbon content (by dry mass) float percent real Sed_Corg Sediment organic carbon content (by dry mass) float percent real Sed_Cinorg Sediment inorganic carbon content (by dry mass) float percent real Sed_N Sediment nitrogen content (by dry mass) float percent real Sed_P Sediment phosphorus content (by dry mass) float percent real Sed_d13C Organic carbon stable isotope ratio relative to standard V-PDB float permil real EA_method Category for method of organic carbon content determination: Measured=Determined on Elemental Analyzer, Predicted=Calculated from LOI using empirical formula derived from this dataset string Free text Corg_dens_interval Organic carbon density of core interval float gramsPerCubicCentimeter real Corg_dens_accu Accumulative organic carbon density of all intervals within a core from the surface up to this interval float gramsPerCubicCentimeter real depth_interval_notes Additional information string Free text cubic centimeter one month excluding leap seconds and leap days, 2628000 seconds megagrams per hectare