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| griddap | Subset | tabledap | Make A Graph | wms | files | Accessible | Title | Summary | FGDC | ISO 19115 | Info | Background Info | RSS | Institution | Dataset ID | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_911212_v1 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_911212_v1.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_911212_v1/ | public | [Epiphytic bacteria methane production data] - MPn-derived methane production by epiphytic bacteria on pelagic Sargassum seaweed from 2017-2019 (Cyanobacteria Hydrocarbons project) (Collaborative Research: Do Cyanobacteria Drive Marine Hydrocarbon Biogeochemistry?) | The essential nutrient phosphorus is biologically scarce in the Sargasso Sea, yet the pelagic macroalgae Sargassum, for which this area of the North Atlantic Ocean is named, thrives. We tested the hypothesis that Sargassum holobionts utilize methylphosphonate (MPn) as an alternative source of phosphorus, finding lysis liberated phosphonate-derived methane. The observed activity occurred at concentrations as low as 35 nM MPn and was inhibited by antibiotics, implicating microbial members of the holobiont capable of MPn lysis at realistic environmental concentrations. A survey of macroalgal species inhabiting the Sargasso Sea found a ubiquitous capacity for MPn lysis; such capacity was absent in species inhabiting phosphorus-replete waters of the California Current, pointing to phosphorous limitation as a selective pressure. These results suggest algal holobionts may conditionally acquire phosphorus from phosphonates while simultaneously serving as a source of atmospheric methane.\n\ncdm_data_type = Other\nVARIABLES:\nOrder (unitless)\nDate (unitless)\nTrial (unitless)\nCondition (unitless)\nNumber_of_Replicates (count)\nInitial_MPn (nM)\nAdditional_Amendments (unitless)\nBottle (unitless)\nT1_Timepoint (days)\nT1_Timepoint_mean_CH4_production (nmol g^-1)\nT1_Timepoint_CH4_no_sig_fig_rounding (nmol g^-1)\nT2_Timepoint (days)\nT2_Timepoint_mean_CH4_production (nmol g^-1)\nT2_Timepoint_CH4_no_sig_fig_rounding (nmol g^-1)\nT3_Timepoint (days)\nT3_Timepoint_CH4_production (nmol g^-1)\nT3_Timepoint_CH4_no_sig_fig_rounding (nmol g^-1)\n... (40 more variables)\n | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_911212_v1/index.htmlTable | https://www.bco-dmo.org/dataset/911212
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_911212_v1.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_911212_v1&showErrors=false&email= | BCO-DMO | bcodmo_dataset_911212_v1 | |||||
| log in | [MAZ-1E-04 age model in the eastern Pacific during the last deglaciation] - Age model built from planktic foraminifera radiocarbon in the eastern Pacific during the last deglaciation determined from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015 (Glacial-Interglacial Changes in Oxygen Minimum Zones Using Deep-Dwelling, Low-Oxygen Planktic Foraminifera) | The structure and drivers of oxygen minimum zone (OMZ) evolution in the Eastern Tropical North Pacific (ETNP) are investigated from ~20.7-10 ka using a multi-proxy approach from core MAZ-1E-04 (22°54.29'N, 106°54.59'W; 1463 m depth). Understanding how OMZ vertical structure changed during past glacial/interglacial cycles will help elucidate the drivers and patterns of OMZ expansion/contraction on longer timescales. \n\nHere, the age model built from planktic foraminifera radiocarbon and calibrated with marine reservoir ages and the intcal20 calibration curve, based on samples from core MAZ-1E-04 collected on cruise MAZ-I aboard the R/V El Puma in April 2015, is used to investigate multiple geochemical proxies over the last deglaciation. Universidad Nacional Autónoma de México financed ship time and M. Alejandro Rodríguez Ramírez directed the oceanographic campaign to retrieve the core.\n\ncdm_data_type = Other\nVARIABLES:\nDepth_core (centimeter (cm))\nMean_Age (years before present (yr BP))\nAge_model_1_SD (years before present (yr BP))\nMedian (years before present (yr BP))\n | BCO-DMO | bcodmo_dataset_991455_v1 |