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BCO-DMO ERDDAP
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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 | |
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| log in | [AE2413 Bacterial productivity] - Bacterial productivity of samples from three stations in the Western North Atlantic aboard R/V Atlantic Explorer cruise AE2413, during May 2024 (Collaborative Research: Pressure effects on microbially-catalyzed organic matter degradation in the deep ocean) | Heterotrophic bacteria and archaea (here: microbes) are critical drivers of the ocean's biogeochemical cycles, active throughout the depth of the ocean. Their capabilities and limitations help determine the rates and locations at which carbon and nutrients are regenerated, as well as the extent to which organic matter is preserved (Hedges 1992). In the deep ocean, at bathy- and abyssopelagic depths (ca. 1000-6000m), these communities are dependent upon the sinking flux of particulate organic matter (POM) from the surface ocean (Bergauer et al. 2018). This dependence means that heterotrophic microbial communities must produce the extracellular enzymes required to solubilize and hydrolyze high molecular weight (HMW) POM to sizes substrates suitable for cellular uptake. A recent global-scale investigation of deep-sea microbes in fact found that the genetic potential for exported (extracellular) enzymes among bacteria in deep waters was far greater than for communities in surface or mesopelagic waters (Zhao et al. 2020). We have new evidence that a substantial fraction of bacteria in bottom water from the North Atlantic Ocean use a specialized set of extracellular enzymes to rapidly take up HMW polysaccharides (Giljan et al. 2021), a substrate processing mechanism that would not be detected with the low molecular weight substrates used in most prior studies of microbial activity in the deep ocean (Nagata et al. 2010).\n \nThrough our collaboration with the Danish Center for Hadal Research, we were able to use pressurization systems and in situ specialized equipment to investigate the effects of pressures characteristic of bathy- and abyssopelagic depths on microbial communities and their extracellular enzymes in the open North Atlantic Ocean. \n \nHere we present the measurement of 3H-leucine incorporation by heterotrophic bacteria using a cold trichloroacetic acid (TCA) and microcentrifuge extraction method (Kirchman, 2001) at different sites in the Western North Atlantic aboard R/V Atlantic Explorer during during the research cruise AE2413 (2024-05-09 to 2024-05-28). All work and incubations were performed in a UNOLS isotope lab, or within designated areas at the University of North Carolina at Chapel HIll post cruise. This dataset contains collection metadata, environmental conditions, sample types and treatments, incubation conditions, substrate types, radioactivity measurements, and calculated incorporation rates of 3H-leucine.\n\ncdm_data_type = Other\nVARIABLES:\ndeployment (unitless)\n... (24 more variables)\n | BCO-DMO | bcodmo_dataset_963407_v1 | ||||||||||||
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_3872.subset | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_3872 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_3872.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_3872/ | public | [bacterial_production] - Bacterial production in microcosm experiments from samples collected by R/V E.O. Wilson in the Gulf of Mexico, Alabama (En-Gen DMSP Cycling project) (En-Gen: A Functional Genomics Approach to Organic Sulfur Cycling in the Ocean) | Bacterial production measurements from control and experimental microcosms from the Dauphin Island Cubitainer Experiment (DICE).\n\ncdm_data_type = Other\nVARIABLES:\nexp_id (text)\nlatitude (degrees_north)\nlongitude (degrees_east)\nsite_desc (text)\nmicrocosm (text)\nmicrocosm_type (text)\nexp_day (integer)\nmean (dpm)\nmean_minus_blank (dpm)\nstdev (dpm)\ncoeff_var (%)\ninc_time (hours)\nleu_inc_per_h (nM Leu per hour)\nleu_inc_per_d (nM Leu per day)\nstdev_calc (nM Leu per day)\nbact_prod (nM Carbon per day)\nbact_prod_err (nM Carbon per day)\nbact_C_demand (nM Carbon per day)\nbact_C_demand_err (nM Carbon per day)\nbact_S_prod (nM Sulfur per day)\nreplicate (unitless)\ndpm (dpm)\n | https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_3872_fgdc.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_3872/index.htmlTable | https://www.bco-dmo.org/dataset/3872
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_3872.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_3872&showErrors=false&email= | BCO-DMO | bcodmo_dataset_3872 | |||
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_941067_v1 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_941067_v1.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_941067_v1/ | public | [Infauna abundance and biomass] - In situ infauna abundance and biomass of experimental sediment chambers acquired in the shallow subtidal shore-accessible site in Bon Secour Bay, Mobile Bay, Alabama, USA between August 7-12, 2021 (CAREER: Mechanisms of bioturbation and ecosystem engineering by benthic infauna) | This dataset is part of a field study examining the effect of diel oxygen cycling on faunal activity, and in turn sediment oxygen demand. The field experiment used in situ flow-through benthic chambers to measure oxygen consumption. The chambers were deployed and retrieved in three ~24 hour deployments in a shallow subtidal area of Bon Secour Bay in Mobile Bay, AL, in August 2021. This dataset contains the abundances of all macrofaunal taxa as well as the total biomass and the biomass of some major taxa found in each of the chambers. The Abunance data have not been normalized to meters squared. The biomass values have been normalized to meters squared from the values taken from the chambers, which occupy a smaller area.\n\ncdm_data_type = Other\nVARIABLES:\nSampling_Date (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nSample_ID (unitless)\nJuvenileCrab (individuals per chamber)\nShrimp (individuals per chamber)\nAmphipoda (individuals per chamber)\nCorophiidae (individuals per chamber)\nAmpeliscidae (individuals per chamber)\nTanaidaceae (individuals per chamber)\nCapitellidae (individuals per chamber)\nNereididae (individuals per chamber)\nSpionidae (individuals per chamber)\nPhyllodocidae (individuals per chamber)\nOrbiniidae (individuals per chamber)\nTellinidae (individuals per chamber)\nMactridae (individuals per chamber)\nEchiura (individuals per chamber)\nMicrodesmidae (individuals per chamber)\nAbundance (individuals)\n... (9 more variables)\n | https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_941067_v1_fgdc.xml | https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_941067_v1_iso19115.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_941067_v1/index.htmlTable | https://osprey.bco-dmo.org/dataset/941067
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_941067_v1.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_941067_v1&showErrors=false&email= | BCO-DMO | bcodmo_dataset_941067_v1 |