Abstract:

The data contained in this dataset describes anaerobic methane oxidation rates (AOM), sulfate reduction rates (SR), methanogenesis rates, bicarbonate based particulate organic carbon formation rates (bPOC), and methane based particulate organic carbon formation rates (mPOC) from cold seep sediments. Cold seep and hydrothermally altered sediments that were assayed were from the Gulf of Mexico (GoM) aboard R/V Seward Johnson, Monterey Bay (MB) aboard R/V Point Lobos, and Guaymas Basin (GB) aboard R/V Cruise Atlantis 15-56 (AT15-56). Rates were determined by radiotracer techniques or by concentration changes in sulfate. All rates reported were determined for sediments incubated at in situ temperature and pressure. This dataset supports the publication by Bowles, Marshall W., Vladimir A. Samarkin, Kimberly S. Hunter, Niko Finke, Andres Teske, Peter R. Girguis, and Samantha B. Joye. 2019. Remarkable capacity for anaerobic oxidation of methane at high methane concentration. Geophysical Research Letters 46(21):12192-12201. DOI: 10.1029/2019GL084375.

Suggested Citation:

Bowles, Marshall. 2021. Dataset for: Remarkable capacity for anaerobic oxidation of methane at high methane concentrations. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/n7-1sgh-rv35

Publications:

Bowles, M. W., Samarkin, V. A., Hunter, K. S., Finke, N., Teske, A. P., Girguis, P. R., & Joye, S. B. (2019). Remarkable Capacity for Anaerobic Oxidation of Methane at High Methane Concentration. Geophysical Research Letters, 46(21), 12192–12201. doi:10.1029/2019gl084375

Purpose:

The dataset was created to document the rate data presented in the publication 'Remarkable capacity for anaerobic oxidation of methane at high methane concentrations.' The scientific purpose of this work was to determine the influence of in situ methane concentrations microbial process rates.

Data Parameters and Units:

Season Dates Latitude Longitude Depth (m) GOM Gulf of Mexico Fall 2006 6-Sep-06 28º 51.47N 88º 29.42 ́W 1000 MB Monterey Bay Spring 2009 12-Apr-09 36°46.6′N 122°05.1′ 1000 GB Guaymas Basin Fall 2009 27 Nov 2009 27º0.4' N 111º24.5' W 2000 The headers are GoM_CH4 (Gulf of Mexico methane, mM); GoM_MEAN_AOM_RATE (Gulf of Mexico, Average Anaerobic Oxidation of Methane, nmol cm-3 d-1); GoM_STD_AOM_RATE (Gulf of Mexico, Standard Deviation Anaerobic Oxidation of Methane, nmol cm-3 d-1); GoM_MEAN_SR_RATE (Gulf of Mexico, Average Sulfate Reduction, nmol cm-3 d-1); GoM_STD_SR_RATE (Gulf of Mexico, Standard Deviation Sulfate Reduction, nmol cm-3 d-1); GoM_MEAN_MOG_RATE (Gulf of Mexico, Average Methanogenesis ,nmol cm-3 d-1); GoM_STD_MOG_RATE (Gulf of Mexico, Standard Deviation Methanogenesis ,nmol cm-3 d-1); MB_CH4 (Monterey Bay, mM); MB_MEAN_AOM_RATE (Monterey Bay, Average Anaerobic Oxidation of Methane, nmol cm-3 d-1); MB_STD_AOM_RATE (Monterey Bay, Standard Deviation Anaerobic Oxidation of Methane, nmol cm-3 d-1); MB_MEAN_SR_RATE (Monterey Bay, Average Sulfate Reduction, nmol cm-3 d-1); MB_STD_SR_RATE (Monterey Bay, Standard Deviation Sulfate Reduction, nmol cm-3 d-1); MB_MEAN_MOG_RATE (Monterey Bay, Average Methanogenesis, nmol cm-3 d-1); MB_STD_MOG_RATE (Monterey Bay, Standard Deviation Methanogenesis, nmol cm-3 d-1); GB_CH4 (Guaymas Basin, mM); GB_MEAN_AOM_RATE (Guaymas Basin, Average Anaerobic Oxidation of Methane, nmol cm-3 d-1); GB_STD_AOM_RATE (Guaymas Basin, Standard Deviation Anaerobic Oxidation of Methane, nmol cm-3 d-1); GB_MEAN_SR_RATE (Guaymas Basin, Average Sulfate Reduction, nmol cm-3 d-1); GB_STD_SR_RATE (Guaymas Basin, Standard Deviation Sulfate Reduction, nmol cm-3 d-1); GB_MEAN_MOG_RATE (Guaymas Basin, Average Methanogenesis, nmol cm-3 d-1); GB_STD_MOG_RATE (Guaymas Basin, Standard Deviation Methanogenesis, nmol cm-3 d-1); GoM_MEAN_bPOC (Gulf of Mexico Average Bicarbonate based Particulate Organic Carbon, nmol cm-3 d-1); GoM_STD_bPOC (Gulf of Mexico Standard Deviation Bicarbonate based Particulate Organic Carbon, nmol cm-3 d-1); GB_MEAN_bPOC (Guaymas Basin Average Bicarbonate based Particulate Organic Carbon, nmol cm-3 d-1); GB_STD_bPOC (Guaymas Basin Standard Deviation Bicarbonate based Particulate Organic Carbon, nmol cm-3 d-1); MB_MEAN_bPOC (Monterey Bay Average Bicarbonate based Particulate Organic Carbon, nmol cm-3 d-1); MB_STD_bPOC (Monterey Bay Standard Deviation Bicarbonate based Particulate Organic Carbon, nmol cm-3 d-1); GoM_MEAN_mPOC (Gulf of Mexico Average Methane based Particulate Organic Carbon, nmol cm-3 d-1); GoM_STD_mPOC (Gulf of Mexico Standard Deviation Methane based Particulate Organic Carbon, nmol cm-3 d-1); GB_MEAN_mPOC (Guaymas Basin Average Methane based Particulate Organic Carbon, nmol cm-3 d-1); GB_STD_mPOC (Guaymas Basin Standard Deviation Methane based Particulate Organic Carbon, nmol cm-3 d-1); MB_MEAN_mPOC (Monterey Bay Average Methane based Particulate Organic Carbon, nmol cm-3 d-1); MB_STD_mPOC (Monterey Bay Standard Deviation Methane based Particulate Organic Carbon, nmol cm-3 d-1); Time (hr); MEAN_SR rate via AOM (Average Sulfate Reduction with Anaerobic Oxidation of Methane, nmol cm-3 d-1); SR_STD (Standard Deviation of Sulfate Reduction, nmol cm-3 d-1); Mean AOM Rate (Average Anaerobic Oxidation of Methane, nmol cm-3 d-1); AOM_STD (Standard Deviation Anaerobic Oxidation of Methane, nmol cm-3 d-1); MEAN SO4 (Average Sulfate, mM); SO4_STD (Standard Deviation Sulfate, mM); Measurement (categoricals: d-SO4 (change in sulfate), SR (Sulfate Reduction), AOM (Anaerobic Oxidation of Methane); Average total rate (Mean rate for categorical variables, nmol cm-3 d-1); STD_total rate (Standard Deviation of rate for categorical variables, nmol cm-3 d-1)

Methods:

SR samples were processed in a one-step acidic chromium reduction, with methods and calculations described by Bowles et al. (2011) and Joye et al. (2004). AOM samples were processed in a passive acidic distillation and rates determined as described by Bowles et al. (2011). The bPOC and mPOC rate methods are described in the publication 'Remarkable capacity for anaerobic oxidation of methane at high methane concentrations.' All pressure methods are described in detail in Bowles et al., 2011.

Provenance and Historical References:

Bowles, Marshall W., Vladimir A. Samarkin, and Samantha B. Joye. 2011. Improved measurement of microbial activity in deep-sea sediments at in situ pressure and methane concentration. Limnology and Oceanography Methods 9(10): 499-506. DOI: 10.4319/lom.2011.9.499 Joye, Samantha B., Antje Boetius, Beth N. Orcutt, Joseph P. Montoya, Heide N. Schulz, Matthew J. Erickson, and Samantha K. Lugo. 2004. The anaerobic oxidation of methane and sulfate reduction in sediments from Gulf of Mexico cold seeps. Chemical Geology 205(3-4): 219-238. DOI: 10.1016/j.chemgeo.2003.12.019

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