Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Elvert, Marcus; Hopmans, Ellen C; Treude, Tina; Boetius, Antje; Suess, Erwin (2005): Isotopic signature of specific biomarkers derived from anaerobic methanotrophic archaea (ANME groups) and sulphate-reducing bacteria (SRB) at different cold seep provinces. PANGAEA, https://doi.org/10.1594/PANGAEA.727523, Supplement to: Elvert, M et al. (2005): Spatial variations of methanotrophic consortia at cold methane seeps: Implications from a high-resolution molecular and isotopic approach. Geobiology, 3(3), 195-209, https://doi.org/10.1111/j.1472-4669.2005.00051.x

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Anaerobic methane-oxidizing microbial communities in sediments at cold methane seeps are important factors in controlling methane emission to the ocean and atmosphere. Here, we investigated the distribution and carbon isotopic signature of specific biomarkers derived from anaerobic methanotrophic archaea (ANME groups) and sulphate-reducing bacteria (SRB) responsible for the anaerobic oxidation of methane (AOM) at different cold seep provinces of Hydrate Ridge, Cascadia margin. The special focus was on their relation to in situ cell abundances and methane turnover. In general, maxima in biomarker abundances and minima in carbon isotope signatures correlated with maxima in AOM and sulphate reduction as well as with consortium biomass. We found ANME-2a/DSS aggregates associated with high abundances of sn-2,3-di-O-isoprenoidal glycerol ethers (archaeol, sn-2-hydroxyarchaeol) and specific bacterial fatty acids (C16:1omega5c, cyC17:0omega5,6) as well as with high methane fluxes (Beggiatoa site). The low to medium flux site (Calyptogena field) was dominated by ANME-2c/DSS aggregates and contained less of both compound classes but more of AOM-related glycerol dialkyl glycerol tetraethers (GDGTs). ANME-1 archaea dominated deeper sediment horizons at the Calyptogena field where sn-1,2-di-O-alkyl glycerol ethers (DAGEs), archaeol, methyl-branched fatty acids (ai-C15:0, i-C16:0, ai-C17:0), and diagnostic GDGTs were prevailing. AOM-specific bacterial and archaeal biomarkers in these sediment strata generally revealed very similar d13C-values of around -100 per mill. In ANME-2-dominated sediment sections, archaeal biomarkers were even more 13C-depleted (down to -120 per mill), whereas bacterial biomarkers were found to be likewise 13C-depleted as in ANME-1-dominated sediment layers (d13C: -100 per mill). The zero flux site (Acharax field), containing only a few numbers of ANME-2/DSS aggregates, however, provided no specific biomarker pattern. Deeper sediment sections (below 20 cm sediment depth) from Beggiatoa covered areas which included solid layers of methane gas hydrates contained ANME-2/DSS typical biomarkers showing subsurface peaks combined with negative shifts in carbon isotopic compositions. The maxima were detected just above the hydrate layers, indicating that methane stored in the hydrates may be available for the microbial community. The observed variations in biomarker abundances and 13C-depletions are indicative of multiple environmental and physiological factors selecting for different AOM consortia (ANME-2a/DSS, ANME-2c/DSS, ANME-1) along horizontal and vertical gradients of cold seep settings.
Coverage:
Median Latitude: 44.569917 * Median Longitude: -125.147128 * South-bound Latitude: 44.568400 * West-bound Longitude: -125.147750 * North-bound Latitude: 44.571083 * East-bound Longitude: -125.146550
Date/Time Start: 1999-07-24T20:44:00 * Date/Time End: 2000-08-01T05:00:00
Event(s):
SO143_55-5 * Latitude Start: 44.570167 * Longitude Start: -125.146817 * Latitude End: 44.570167 * Longitude End: -125.147167 * Date/Time Start: 1999-07-24T20:44:00 * Date/Time End: 1999-07-24T21:42:00 * Elevation: -787.1 m * Recovery: 1.05 m * Campaign: SO143/1b (TECFLUX I) * Basis: Sonne * Device: Gravity corer (Kiel type) (SL) * Comment: 105cm
SO148/1_19-2 (TV-MUC-6) * Latitude Start: 44.569950 * Longitude Start: -125.146550 * Latitude End: 44.568400 * Longitude End: -125.146783 * Date/Time Start: 2000-07-27T04:40:00 * Date/Time End: 2000-07-27T07:02:00 * Elevation: -777.0 m * Recovery: 0.26 m * Campaign: SO148/1 (TECFLUX II) * Basis: Sonne * Device: Multicorer with television (TVMUC) * Comment: 6 cores, 20-26 cm
SO148/1_44 (TV-MUC-11) * Latitude Start: 44.571083 * Longitude Start: -125.146950 * Latitude End: 44.569750 * Longitude End: -125.147233 * Date/Time Start: 2000-07-31T03:49:00 * Date/Time End: 2000-07-31T04:47:00 * Elevation: -776.0 m * Recovery: 0.19 m * Campaign: SO148/1 (TECFLUX II) * Basis: Sonne * Device: Multicorer with television (TVMUC) * Comment: 5 cores, 15-19 cm
Size:
8 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text (use the following character encoding: )

Datasets listed in this publication series

  1. Elvert, M; Hopmans, EC; Treude, T et al. (2005): Carbon isotopic compositions of archaeal and bacterial lipid biomarkers at the Acharax field SO148/1_51. https://doi.org/10.1594/PANGAEA.511373
  2. Elvert, M; Hopmans, EC; Treude, T et al. (2005): Carbon isotopic compositions of archaeal and bacterial lipid biomarkers at the Beggiatoa site SO148/1_19-2. https://doi.org/10.1594/PANGAEA.511346
  3. Elvert, M; Hopmans, EC; Treude, T et al. (2005): Carbon isotopic compositions of archaeal and bacterial lipid biomarkers at the Calyptogena field SO148/1_44. https://doi.org/10.1594/PANGAEA.511348
  4. Elvert, M; Hopmans, EC; Treude, T et al. (2005): Carbon isotopic compositions of archaeal and bacterial lipid biomarkers at the gas hydrate site SO143-1_55-5. https://doi.org/10.1594/PANGAEA.511371
  5. Elvert, M; Hopmans, EC; Treude, T et al. (2005): Concentrations of archaeal and bacterial lipid biomarkers at the Acharax field SO148/1_51. https://doi.org/10.1594/PANGAEA.511372
  6. Elvert, M; Hopmans, EC; Treude, T et al. (2005): Concentrations of archaeal and bacterial lipid biomarkers at the Beggiatoa site SO148/1_19-2. https://doi.org/10.1594/PANGAEA.511344
  7. Elvert, M; Hopmans, EC; Treude, T et al. (2005): Concentrations of archaeal and bacterial lipid biomarkers at the Calyptogena field SO148/1_44. https://doi.org/10.1594/PANGAEA.511347
  8. Elvert, M; Hopmans, EC; Treude, T et al. (2005): Concentrations of archaeal and bacterial lipid biomarkers at the gas hydrate site SO143-1_55-5. https://doi.org/10.1594/PANGAEA.511370