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https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_928039_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_928039_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_928039_v1/ public [Controlled laboratory study using model organisms Micromonas commoda RCC 299 and Ruegeria pomeroyi DSS-3] - Bacterial transcriptional response to picoeukaryote Micromonas commoda (Effects of Climate Change Variables on Microbial Autotroph-Heterotroph Carbon Flux) Marine biogeochemical cycles are built on interactions between surface ocean microbes, particularly those connecting phytoplankton primary producers to heterotrophic bacteria. However, direct influences of bacteria on phytoplankton physiology are poorly known. In this study, three marine bacteria (Ruegeria pomeroyi DSS-3, Stenotrophomonas sp. SKA14, and Polaribacter dokdonensis MED152) were co-cultured with green alga Micromonas commoda, and the phytoplankter's transcriptome was studied by RNASeq. The presence of each bacterium invoked transcriptomic remodeling by M. commoda after 8 h in co-culture. Some aspects of the algal transcriptomic response were conserved across all three bacteria, while others were restricted to a single bacterium. M. commoda had both rapid and extensive responses to heterotrophic bacteria.\n\ncdm_data_type = Other\nVARIABLES:\nBottle_ID (unitless)\nTreatment (unitless)\nTime_h (hour (h))\nMicromonas_cells_ml (cells per milliliter (cell/ml))\nBacteria_cells_ml (cells per milliliter (cell/ml))\nNH4_uM (micromolar (uM))\nNO3_uM (micromolar (uM))\nPO4_uM (micromolar (uM))\nNCBI_Sample_ID (unitless)\nAccession (unitless)\nBioProject (unitless)\nOrganism (unitless)\nTaxonomy_ID (unitless)\nDescription (unitless)\n https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_928039_v1/index.htmlTable https://www.bco-dmo.org/dataset/928039 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_928039_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_928039_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_928039_v1
log in [nGoM benthic chamber between July 2021 and July 2022] - Benthic chamber geochemical data obtained with an in situ benthic lander from the R/V Savannah at sampling stations across the Louisiana shelf and slope in the Northern Gulf of Mexico during four cruise between July 2021 and July 2022 (Importance of Riverine Discharge on the Benthic Flux of Alkalinity to Continental Margins) This data set reports benthic flux measurements of dissolved inorganic carbon (DIC), orthophosphate (SPO43-), ammonium (NH4+), total alkalinity (TA), carbon isotopic fractionation of DIC (13-C-DIC), dissolved manganese (Mnd), dissolved calcium (Cad), nitrate (NO3-), and excess bromide (Br-) injected in the chamber as chemical tracer. \n \nIn summer 2021, benthic flux data were obtained from benthic chamber deployments at eleven different stations on the Louisiana Shelf and slope in the Northern Gulf of Mexico during July 15-27, 2021 using two different benthic landers. These stations span two transects, one from the middle of the shelf offshore from Cocodrie, LA to the mouth of the Mississippi River North West Pass, and another from North West Pass of the Mississippi River mouth to the south, across the slope. A single station (St. 15) was also sampled on the eastern side of the second transect in the transition from the shelf break to the mid-slope. All benthic chamber samples were processed within an hour after collection. \n \nIn fall 2021, benthic flux data were obtained from benthic chamber deployments at ten different stations on the Louisiana Shelf and slope in the Northern Gulf of Mexico between October 25 and November 10, 2021 using two different benthic landers. These stations span two transects, one from the middle of the shelf offshore from Cocodrie, LA to the mouth of the Mississippi River South West Pass, and another from South West Pass of the Mississippi River mouth to the south, across the slope. Two stations (St. 15 and St. 12) were also sampled on a second transect from the shelf break to the slope southeast of the Bird's Foot. \n \nIn spring 2022, benthic flux data were obtained from benthic chamber deployments at ten different stations on the Louisiana Shelf and slope in the Northern Gulf of Mexico during April 9-20, 2021 using two different benthic landers. These stations span two transects, one from the middle of the shelf offshore from Cocodrie, LA to the mouth of the Mississippi River South West Pass, and another from South West Pass of the Mississippi River mouth to the south, across the slope. Two stations (St. 15 and St. 12) were also sampled on a second transect from the shelf break to the slope southeast of the Bird's Foot. \n \nIn summer 2022, benthic flux data were obtained from benthic chamber deployments at eleven different stations on the Louisiana Shelf and slope in the Northern Gulf of Mexico in July 9 -23, 2022 using two different benthic landers. These stations span two transects, one from the middle of the shelf offshore from Cocodrie, LA to the mouth of the Mississippi River South West Pass, and another from South West Pass of the Mississippi River mouth to the south, across the slope. Two stations (St. 15 and St. 12) were also sampled on a second transect from the shelf break to the slope southeast of the Bird's Foot. \n \nSamples were immediately filtered through 0.22-micrometer (µm) PSE syringe filters and either analyzed immediately onboard (SPO43-), preserved acidified with hydrochloric acid at 4 degrees Celsius (Cad, Mnd), frozen (NH4+, NO3-, Br-), or preserved at 4 degrees Celsius after addition of HgCl2 (TA) until analysis.  In addition, samples for DIC, TA, and carbon isotopic analyses were preserved in glass bottles, whereas other samples were preserved in polypropylene containers.  DIC and TA were analyzed by Gran titration (Gran, 1952) using temperature-controlled closed cells (Dickson et al. 2007), orthophosphate and ammonium by spectrophotometry (Murphy and Riley, 1962; Strickland and Parsons, 1972), the carbon isotopic signature by isotope ratio mass spectrometry (Wang et al, 2018), Mnd and Cad by ICP-MS (Magette et al., 2025 In review), and NO3- and Br- by high performance liquid chromatography (HPLC) (Beckler et al., 2014). In summer 2022, benthic chamber and pore water DIC and TA samples were analyzed by cavity ring-down spectrometry (CRDS, Picarro G2131-i) with an automatic CO2 extraction system (Apollo SciTech AS-D1) and open-cell potentiometric titrations, respectively (Ferreira et al., 2025).\n\ncdm_data_type = Other\nVARIABLES:\nDate (unitless)\n... (28 more variables)\n BCO-DMO bcodmo_dataset_959033_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_917767_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_917767_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_917767_v1/ public [Subterranean Estuary In Situ Tracer Experiment Incubation Data, 2019] - In situ tracer injection experiment conducted with 15N-labeled ammonium in a shallow, sandy subterranean estuary in Gloucester Point, USA  in August 2019. (Collaborative Research:  Cryptic nitrogen cycling in the anoxic subterranean estuary) These data are the result of an in situ tracer injection experiment conducted with 15N-labeled ammonium to determine the fate and transport rates of ammonium within a shallow, sandy subterranean estuary in Gloucester Point, VA, USA. \n\nReplicate injections of 15N-labeled ammonium, sulfur hexaflouride, and bromide amended porewater were injected into piezometers at 50cm.  Porewater was then collected overtime from the injection piezometers and tracer piezometers surrounding the injection site ranging in depth from 40-60cm.  At each time point, samples were collected to analyze dissolved inorganic nitrogen (nitrate, nitrite, and ammonium) concentrations, sulfur hexaflouride, bromide, chloride. Nitrate and nitrite samples from porewater were analyzed with an isotope ratio mass spectrometer in order to assess the 15N enrichment of the nitrate in each sample resulting in a delta value (d15N) that allows for the calculation of the mole fraction of 15N-labeled nitrite and nitrate in porewater at each time point. The production or consumption over time constitutes subterranean estuary nitrogen cycling rates (e.g. nitrification, denitrification, etc.).\n\ncdm_data_type = Other\nVARIABLES:\nSite_Name (unitless)\nLatitude (degrees_north)\nlongitude (degrees_east)\nPiezometer (unitless)\nSample_ID (unitless)\nTime_Point (unitless)\nDate (unitless)\nTime (unitless)\nHours_after_Injection (hours (hrs))\nBromide_uM (micromoles per liter (uM))\nChloride_mM (millimoles per liter (mM)\nSF6_ppbv (parts per billion per volume (ppbv))\nSF6_pM (picoMolar (pM))\nNox_uM (micromoles per liter (uM))\n... (4 more variables)\n https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_917767_v1/index.htmlTable https://www.bco-dmo.org/dataset/917767 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_917767_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_917767_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_917767_v1

 
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