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Title Sum-
Institution Dataset ID
     data        files  public Porewater sulfate from samples collected by pushcore from Guaymas Basin hydrothermal
sediments on R/V Atlantis cruise AT37-06 in the Guaymas Basin in December 2016
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The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv
attribute NC_GLOBAL acquisition_description String Sampling and Analytical Methodology: Freshly collected sediment cores were
sliced on the ship into 3 cm layers; porewater was obtained by gently
centrifuging freshly collected sediment in 50 ml conical Falcon tubes for ca.
5 to 10 minutes until the sediment had settled; one Falcon tube produced ca. 8
to 10 ml of porewater. For porewater sulfate measurements, 1 ml subsamples of
the overlying porewater were drawn into syringes and injected through 0.45
\u03bcm filters into screw cap Eppendorf vials, each acidified with 50 \u00b5l
of 6N HCl, and then gently bubbled with nitrogen for 4 min to remove sulfide;
the samples were then stored at 4\u00baC before shipping and analysis.

Geochemical Analyses:\u00a0SO4 was analyzed on a Dionex ICS-1000 using a RFIC
IonPac AS22 4 X 250mm column and a RFIC IonPac AG22 Guard column 4 X 50 mm.
The IC was calibrated using a 5 point std curve and a minimum r^2 value of
0.999. The MDL measured at 0.10 ppm SO4. A check standard from a 1000 ppm was
made fom a Dionex 7 anion standard to a concentration of 15 ppm. An external
Standard from HACH 100 ppm SO4 was used to make a 20 ppm QC standard. In
general, QCs were analyzed for 10% of the samples.

Data Processing: The porewater data of Guaymas Basin sand Sonora Margin piston
cores were tabulated in Excel sheets.

Quality Control: Note that Sample_IDs \"D7A_10X_CKS\" are internal quality
control standards (15.5 mg/L) and\u00a0Sample_IDs \"DI_SPK\" are external
quality control standards (20.0 mg/L).
attribute NC_GLOBAL awards_0_award_nid String 505555
attribute NC_GLOBAL awards_0_award_number String OCE-1357238
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=1357238 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Michael E. Sieracki
attribute NC_GLOBAL awards_0_program_manager_nid String 50446
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Porewater Geochemistry: SO4
Cruise AT37-06, Guaymas Basin
PI: Andreas Teske (UNC Chapel Hill)
Version: 07 December 2017
Sample_IDs "D7A_10X_CKS" are internal quality control standards (15.5 mg/L)
Sample_IDs "DI_SPK" are external quality control standards (20.0 mg/L)
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2017-12-08T20:28:22Z
attribute NC_GLOBAL date_modified String 2020-01-14T16:41:54Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.720669.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/720669 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Tube Core
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 720888
attribute NC_GLOBAL instruments_0_description String A plastic tube, about 40 cm (16 inches) long, is pushed into the sediment by Alvin's manipulator arm to collect a sediment core.
attribute NC_GLOBAL instruments_0_instrument_name String Alvin tube core
attribute NC_GLOBAL instruments_0_instrument_nid String 641
attribute NC_GLOBAL instruments_1_acronym String Ion Chromatograph
attribute NC_GLOBAL instruments_1_dataset_instrument_description String SO4 was analyzed on a Dionex ICS-1000 using a RFIC IonPac AS22 4 X 250mm column and a RFIC IonPac AG22 Guard column 4 X 50 mm.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 720887
attribute NC_GLOBAL instruments_1_description String Ion chromatography is a form of liquid chromatography that measures concentrations of ionic species by separating them based on their interaction with a resin. Ionic species separate differently depending on species type and size. Ion chromatographs are able to measure concentrations of major anions, such as fluoride, chloride, nitrate, nitrite, and sulfate, as well as major cations such as lithium, sodium, ammonium, potassium, calcium, and magnesium in the parts-per-billion (ppb) range. (from http://serc.carleton.edu/microbelife/research_methods/biogeochemical/ic.html)
attribute NC_GLOBAL instruments_1_instrument_name String Ion Chromatograph
attribute NC_GLOBAL instruments_1_instrument_nid String 662
attribute NC_GLOBAL instruments_1_supplied_name String Dionex ICS-1000
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, chemical, concentration, data, dataset, dmo, erddap, management, oceanography, office, preliminary, sample, Sample_ID, sulfate, Sulfate_Concentration
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/720669/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/720669 (external link)
attribute NC_GLOBAL param_mapping String {'720669': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/720669/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of North Carolina at Chapel Hill
attribute NC_GLOBAL people_0_affiliation_acronym String UNC-Chapel Hill
attribute NC_GLOBAL people_0_person_name String Andreas P. Teske
attribute NC_GLOBAL people_0_person_nid String 51412
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_1_person_name String Shannon Rauch
attribute NC_GLOBAL people_1_person_nid String 51498
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String Guaymas Basin interactions
attribute NC_GLOBAL projects_0_acronym String Guaymas Basin interactions
attribute NC_GLOBAL projects_0_description String Description from NSF award abstract:
Hydrothermally active sediments in the Guaymas Basin are dominated by novel microbial communities that catalyze important biogeochemical processes in these seafloor ecosystems. This project will investigate genomic potential, physiological capabilities and biogeochemical roles of key uncultured organisms from Guaymas sediments, especially the high-temperature anaerobic methane oxidizers that occur specifically in hydrothermally active sediments (ANME-1Guaymas). The study will focus on their role in carbon transformations, but also explore their potential involvement in sulfur and nitrogen transformations. First-order research topics include quantifying anaerobic methane oxidation under high temperature,in situ concentrations of phosphorus and methane , and with alternate electron acceptors; sulfate and sulfur-dependent microbial pathways and isotopic signatures under these conditions; and nitrogen transformations in methane-oxidizing microbial communities, hydrothermal mats and sediments.
This integrated biogeochemical and microbiological research will explore the pathways of and environmental controls on the consumption and production of methane, other alkanes, inorganic carbon, organic acids and organic matter that fuel the Guaymas sedimentary microbial ecosystem. The hydrothermal sediments of Guaymas Basin provide a spatially compact, high-activity location for investigating novel modes of methane cycling and carbon assimilation into microbial biomass. In the case of anaerobic methane oxidation, the high temperature and pressure tolerance of Guaymas Basin methane-oxidizing microbial communities, and their potential to uncouple from the dominant electron acceptor sulfate, vastly increase the predicted subsurface habitat space and biogeochemical role for anaerobic microbial methanotrophy in global deep subsurface diagenesis. Further, microbial methane production and oxidation interlocks with syulfur and nitrogen transformations, which will be explored at the organism and process level in hydrothermal sediment microbial communities and mats of Guaymas Basin. In general, first-order research tasks (rate measurements, radiotracer incorporation studies, genomes, in situ microgradients) define the key microbial capabilities, pathways and processes that mediate chemical exchange between the subsurface hydrothermal/seeps and deep ocean waters.
Publications associated with this project are as follows:
Note: this is now a list of all publications that use samples collected from the NSF-funded Guaymas cruises AT15-40 and AT15-56. All these publications were funded from NSF award OCE-0647633, the grant that funded these two cruises. Those publications that were written and published after 2013 continue to use samples collected and analyzed on cruises AT15-40 and AT15-56 under NSF award OCE-0647633, but the effort in analyzing the data and writing the manuscript also relied on funding by OCE-1357238. Since we will not have new samples until late in 2016, current work and publications on OCE-1357238 will continue to rely on samples collected during cruises AT15-40 and AT15-56.
Holler, T. F. Widdel, K. Knittel, R. Amann, M. Y. Kellermann, K.-. Hinrichs, A. Teske, A. Boetius, and G. Wegener. 2011. Thermophilic anaerobic oxidation of methane by marine microbial consortia. The ISME Journal 5:1946-1956. doi:10.1038/ismej.2011.77
Biddle, J.F., Z. Cardman, H. Mendlovitz, D.B. Albert, K.G. Lloyd, A. Boetius, and A. Teske. 2012. Anaerobic oxidation of methane at different temperature regimes in Guaymas Basin hydrothermal sediments. The ISME Journal 6:1018-1031. doi:10.1038/ismej.2011.164
McKay, L.J., B.J. MacGregor, J.F. Biddle, H.P. Mendlovitz, D. Hoer, J.S. Lipp, K.G. Lloyd, and A.P. Teske. 2012. Spatial heterogeneity and underlying geochemistry of phylogenetically diverse orange and white Beggiatoa mats in Guaymas Basin hydrothermal sediments. Deep-Sea Research I, 67:21-31. doi:10.1016/j.dsr.2012.04.011
Bowles, M.W., L.M. Nigro, A.P. Teske, and S.B. Joye.. 2012. Denitrification and environmental factors influencing nitrate removal in Guaymas Basin hydrothermally-altered sediments. Frontiers in Microbiology 3:377. doi:10.3389/fmicb.2012.03377
MacGregor, B.J., J.F. Biddle, J.R. Siebert, E. Staunton, E. Hegg, A.G. Matthysse, and A. Teske. 2013. Why orange Guaymas Basin Beggiatoa spp. are orange: Single-filament genome-enabled identification of an abundant octaheme cytochrome with hydroxylamine oxidase, hydrazine oxidase and nitrite reductase activities. Applied and Environmental Microbiology 79:1183-1190. doi:10.1128/AEM.02538-12
MacGregor, B.J., J.F. Biddle, and A. Teske. 2013. Mobile elements in a single-filament orange Guaymas Basin Beggiatoa ("Candidatus Maribeggiatoa") sp. draft genome; evidence for genetic exchange with cyanobacteria. Applied and Environmental Microbiology 79:3974-3985. doi:10.1128/AEM.03821-12
Meyer, S., G. Wegener, K.G. Lloyd, A. Teske, A. Boetius, and A. Ramette. 2013. Microbial habitat connectivity across spatial scales and hydrothermal temperature gradients at Guaymas Basin. Frontiers in Microbiology 4:207. doi:10.3389/fmic.2013.00207
MacGregor, B.J., J.F. Biddle, C. Harbort, A.G. Matthysse, and A. Teske. 2013. Sulfide oxidation, nitrate respiration, carbon acquisition and electron transport pathways suggested by the draft genome of a single orange Guaymas Basin Beggiatoa (Cand. Maribeggiatoa) sp. filament. Marine Genomics 11:53-65. doi:10.1016/j.margen.2013.08.001
Ruff, E., J.F. Biddle, A. Teske, K. Knittel, A. Boetius, and A. Ramette. 2015. Global dispersion and local diversification of the methane seep microbiome. Proc. Natl. Acad. Sci. USA, 112:4015-4020. doi:10.1073/pnas.1421865112
McKay, L., V. Klokman, H. Mendlovitz, D. LaRowe, M. Zabel, D. Hoer, D. Albert, D. de Beer, J. Amend, A. Teske. Thermal and geochemical influences on microbial biogeography in the hydrothermal sediments of Guaymas Basin. Environmental Microbiology, in revision.
Teske, A., D. de Beer, L. McKay, M.K. Tivey, J.F. Biddle, D. Hoer, K.G. Lloyd, M.A. Lever, H.Røy, D.B. Albert, H. Mendlovitz, B. J. MacGregor. 2016. The Guaymas Basin hiking guide to hydrothermal mounds, chimneys and microbial mats: complex seafloor expressions of subsurface hydrothermal circulation. Frontiers in Microbiology 7:75, doi:10.3389/fmicb.2016.00075.
Dowell, F., Z. Cardman, S. Dasarathy, M.Y. Kellermann, L.J. McKay, B.J. MacGregor, S.E. Ruff, J.F. Biddle, K.G. Lloyd, J.S. Lipp, K-U. Hinrichs, D.B. Albert, H. Mendlovitz, and A. Teske. 2016. Microbial communities in methane and short alkane-rich hydrothermal sediments of Guaymas Basin. Frontiers in Microbiology 7:17, doi:10.3389/fmicb.2016.00017.
Conference abstracts (post 2013, only NSF-OCE 1357238):
B.J. MacGregor. 2014. Receiver (REC) domains in the orange Guaymas "Maribeggiatoa" (BOGUAY) draft genome: an evolutionary network of sensor networks. The Human and Environmental Microbiome Symposium 2014. Duke Center for the Genomics of Microbial Systems, Durham, NC.
B.J. MacGregot. 2015. Abundant intergenic repeats and a possible alternate RNA polymerase betra subunit in the orange Guaymas "Maribeggiatoa" genome. American Society for Microbiology 2015 General Meeting. New Orleans, LA.
Z. Cardman, L.J. McKay, E. Dowell, S. Dasarathy, V. Klokman, J.F. Biddle, K.G. Lloyd, H. Mendlovitz, D. Albert, M. Kellermann, K.-U. Hinrichs, B.J. MacGregir and A.P. Teske. 2014. American Society for Microbiology 2014 General Meeting. Boston, MA.
attribute NC_GLOBAL projects_0_end_date String 2017-01
attribute NC_GLOBAL projects_0_geolocation String Guaymas Basin, Gulf of California, 27.00 N, 111.00W
attribute NC_GLOBAL projects_0_name String Microbial Carbon cycling and its interactions with Sulfur and Nitrogen transformations in Guaymas Basin hydrothermal sediments
attribute NC_GLOBAL projects_0_project_nid String 474317
attribute NC_GLOBAL projects_0_start_date String 2014-02
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Porewater sulfate from samples collected by pushcore from Guaymas Basin hydrothermal sediments on cruise AT37-06 in December 2016.
attribute NC_GLOBAL title String Porewater sulfate from samples collected by pushcore from Guaymas Basin hydrothermal sediments on R/V Atlantis cruise AT37-06 in the Guaymas Basin in December 2016
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Sample_ID   String  
attribute Sample_ID bcodmo_name String sample
attribute Sample_ID description String Sample identification number
attribute Sample_ID long_name String Sample ID
attribute Sample_ID nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Sample_ID units String unitless
variable Sulfate_Concentration   float  
attribute Sulfate_Concentration _FillValue float NaN
attribute Sulfate_Concentration actual_range float 5.118, 28.68
attribute Sulfate_Concentration bcodmo_name String SO4
attribute Sulfate_Concentration description String Sulfate concentration
attribute Sulfate_Concentration long_name String Sulfate Concentration
attribute Sulfate_Concentration nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/SPHTMAXX/ (external link)
attribute Sulfate_Concentration units String millimoles per liter (mMol/L)

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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