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https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_1003038_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_1003038_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_1003038_v1/ public [BATS 2019 Size Fractionated Organic C and 13C] - Size fractionated organic carbon and 13C at Bermuda Atlantic Time Series (BATS) from samples collected on R/V Atlantic Explorer cruise AE1920 in August 2019 (The fate of lysis products of picocyanobacteria contributes to marine humic-like chromophoric dissolved organic matter) Size fractionated organic particle carbon and stable carbon isotopes were obtained on the R/V Atlantic Explorer at Bermuda Atlantic Time Series (BATS) (31°40'N, 64°10'W ) in August 2019. For size fractionated particulate organic C analyses, water was obtained from Niskin bottles on a CTD rosette, by opening the bottom of the Niskin bottle. Water was gravity filtered through stacked mesh with the following pore sizes: 500 micrometers (um), 180 um, 53 um, 20 um, and 5 um. Each fraction was resuspended off the mesh and vacuum filtered onto pre-combusted GF/C filters (nominal pore size 1.2 um). Samples were wafted with HCl to remove carbonate and sent to the UC Davis Stable Isotope Facility (Davis, CA) for C and N analysis utilizing an elemental analyzer attached to an isotope ratio mass spectrometer. The samples were obtained to determine particle size to carbon concentration relationships for models, while also providing data for size fractionated microbial community analyses. Samples were collected by Jacob Cram of Horn Point Laboratory (University of Maryland Center for Environmental Science) and his lab members. Filters were prepped in the lab by Clara Fuchsman of Horn Point Laboratory, a part of the University of Maryland Center for Environmental Science. Data were analyzed by both Clara Fuchsman and Jacob Cram.\n\ncdm_data_type = Other\nVARIABLES:\nStation (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nDate (unitless)\ndepth (m)\nSection (unitless)\nSize_Fraction (unitless)\nd13C_VPDB (permil (0/00))\nCarbon (micromolar (uM))\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_1003038_v1_fgdc.xml https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_1003038_v1_iso19115.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_1003038_v1/index.htmlTable https://osprey.bco-dmo.org/dataset/1003038 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_1003038_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_1003038_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_1003038_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_948709_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_948709_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_948709_v1/ public [EPR 2019 Size Fractionated Organic Matter] - Size fractionated organic carbon and nitrogen concentration and stable isotopes from water column of the East Pacific Rise in April 2019 on the R/V Atlantis cruise AT42-09 (Collaborative Research: From hot to cold in the dark - shifts in seafloor massive sulfide microbial communities as physical and geochemical conditions change after venting ceases) On R/V Atlantic cruise AT42-09 in April 2019, size fractionated suspended particulate organic matter samples from the water column at the East Pacific Rise (9°50'N 104°18.14'W) were obtained by opening the bottom of the Niskin bottle to ensured that particles that had sunk below the spigot were included. Between 100 and 120 L of water was gravity filtered, in sequence, through nylon mesh (142 mm diameter) of decreasing pore size (500, 180, 53, 20 µm and 5 µm mesh). The resuspended particulate matter from each sample and size class was collected by vacuum filtration through a 1.2 µm nominal pore size, pre-combusted GF/C glass fiber filter. Samples were wafted with HCl overnight to remove carbonate and sent to the UC Davis Stable Isotope Facility for C and N analysis concentration and stable isotope analysis. \n\nThe purpose of these samples was were used to create particle size to carbon and nitrogen relationships for models, while gaining insights into the origins and fate of particulate organic matter in the ocean. Additionally, these organic matter fractions are directly linked to 16S rRNA amplicon data.  16S rRNA sequence amplicons exactly corresponding to this organic matter data are deposited in SRA (Short Read Archive) under BioProject PRJNA1191024. \n\nJacob Cram conceived of the idea. Benjamin Tully of Center for Dark Energy Biosphere Investigations, University of Southern California oversaw sample collection. Paulina Huanca Valenzuela and Clara Fuchsman prepped the samples in the laboratory and analyzed the data.\n\ncdm_data_type = Other\nVARIABLES:\nStation (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nDate (unitless)\ndepth (m)\nSize_Fraction (micron (um))\nd13C_VPDB (permil (0/00))\nd15N_Air (permil (0/00))\nd15N_BDL_flag (unitless)\n... (5 more variables)\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_948709_v1_fgdc.xml https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_948709_v1_iso19115.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_948709_v1/index.htmlTable https://www.bco-dmo.org/dataset/948709 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_948709_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_948709_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_948709_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_948746_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_948746_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_948746_v1/ public [ETNP 2012 McClane Pump POM] - Suspended Organic Particle concentration and stable C and N isotopes (collected with McClane Pumps and GF/F filters) from the Eastern Tropical North Pacific on the R/V Thompson cruise TN278 in April 2012 (The role of cryptic nutrient cycling within sinking particles on trace element transport in oxygen minimum zones) Suspended organic carbon and nitrogen concentrations and stable isotopes were obtained on the R/V Thompson cruise TN278 at St P2 (16.5 N 107.1 W; known as BB2 on this cruise) and at St P1 (20.1 N 106.0 W; known as BB1 on this cruise) in the Eastern Tropical North Pacific Oxygen Deficient Zone in April 2012. The Oxygen Deficient Zone extended from 105 m to 820 m at St P2 and from 95 to 800 m at St P1. Water was filtered onto 142 mm pre-combusted GF/F filters in situ using McClane pumps (on average ~300-500 L) in a depth profile. Two 21 mm diameter punches were obtained from each 142 mm filter and used for organic matter analysis. Sample punches were wafted with HCl overnight to remove carbonate and sent to the UC Davis Stable Isotope Facility (Davis, CA) for C and N analysis. \n\nThe purpose of this sampling was to quantify suspended organic matter in an offshore Oxygen Deficient Zone. \n\nJacquelyn Neibauer and Rick Keil of the University of Washington deployed the McClane pumps on the cruise. Jacquelyn Neibauer was in charge of prepping the samples. Megan Duffy and Clara Fuchsman of the University of Washington analyzed the data.\n\ncdm_data_type = Other\nVARIABLES:\nSample (unitless)\nSt (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nDate (unitless)\ndepth (m)\nNitrogen (micromolar (uM))\nCarbon (micromolar (uM))\nd15N_Air (permil (0/00))\nd13C_VPDB (permil (0/00))\nC_to_N (unitless)\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_948746_v1_fgdc.xml https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_948746_v1_iso19115.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_948746_v1/index.htmlTable https://www.bco-dmo.org/dataset/948746 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_948746_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_948746_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_948746_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_948637_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_948637_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_948637_v1/ public [ETNP 2018-2019 suspended POM concentrations and isotopes] - Suspended Organic Particle concentration and stable C and N isotopes from the Eastern Tropical North Pacific in April 2018 (R/V Roger Revelle RR1805) and October 2019 (R/V Kilo Moana KM1920) (Dimensions: Diversity, assembly and function of microbial communities on suspended and sinking particles in a marine Oxygen Deficient Zone) Suspended Organic Particle Carbon and Nitrogen concentrations and stable C and N isotopes were obtained from the Eastern Tropical North Pacific on the R/V Revelle cruise RR1805 in April 2018 and the R/V Kilo Moana cruise KM1920 in October 2019. R/V Revelle cruise RR1805 sampled two stations in 2018: St P2 (16.9ºN 107ºW) and St P1 (20.3 °N 106.1°W). These two stations included an anoxic Oxygen Deficient Zone from 105-820 m for St P2 and 68-800 m for St P1. The R/V Kilo Moana cruise KM1920 sampled two stations in 2019: St P2 (16.9°N 107°W) and St P3 (21.8°N  109.9°W). These two stations included an anoxic Oxygen Deficient Zone from 110-820 m for St P2 and 160-650 m for St P3. St P3 is at the Northern Edge of the Oxygen Deficient Zone. St P2 is offshore in the core of the Oxygen Deficient Zone, and St P1 is on the continental slope.  \n\nDuring both cruises, water for bulk suspended particulate organic C and N analyses was obtained from Niskin bottles on a CTD rosette and vacuum-filtered it onto pre-combusted GF/F filters. Samples were wafted with HCl to remove carbonate and sent to the UC Davis Stable Isotope Facility (Davis, CA) for C and N analysis utilizing an elemental analyzer attached to an isotope ratio mass spectrometer. \n\nThe samples were obtained to determine whether organic matter concentrations increased and isotopic composition changed at the secondary chlorophyll maximum in the Oxygen Deficient Zone and at the zooplankton/forage fish vertical migration depth in the Oxygen Deficient Zone.  St P2 and St P1  had a secondary chlorophyll maximum and St P3 did not. \n\nSamples were collected and data were analyzed by Clara Fuchsman of Horn Point Laboratory, a part of the University of Maryland Center for Environmental Science.\n\ncdm_data_type = Other\nVARIABLES:\nCruise (unitless)\nstation (unitless)\nCast (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\n... (7 more variables)\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_948637_v1_fgdc.xml https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_948637_v1_iso19115.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_948637_v1/index.htmlTable https://www.bco-dmo.org/dataset/948637 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_948637_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_948637_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_948637_v1
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_948682_v1 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_948682_v1.graph https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_948682_v1/ public [ETNP 2019 size fractionated POM concentrations and isotopes] - Size fractionated organic C and N concentrations and stable isotopes from the Eastern Tropical North Pacific on the R/V Kilo Moana cruise KM1920 in October 2019 (Dimensions: Diversity, assembly and function of microbial communities on suspended and sinking particles in a marine Oxygen Deficient Zone) Size fractionated Organic Particle Carbon and Nitrogen concentrations and stable C and N isotopes from the Eastern Tropical North Pacific  were obtained from the R/V Kilo Moana on cruise KM1920 in the Eastern Tropical North Pacific at two stations in October 2019: St P2 (16.9°N 107°W) and St P3 (21.8°N 109.9°W). These two stations included an anoxic Oxygen Deficient Zone from 110-820 m for St P2 and 160-650 m for St P3. \n\nFor size fractionated particulate organic C and N analyses, water was obtained from Niskin bottles on a CTD rosette, by opening the bottom of the Niskin bottle.  Water was gravity filtered through stacked mesh with the following pore sizes: 500 um, 180 um, 53 um, 20 um, and 5 um. Each fraction was resuspended off the mesh and vacuum filtered it onto pre-combusted GF/C filters (nominal pore size 1.2 um). Samples were wafted with HCl to remove carbonate and sent to the UC Davis Stable Isotope Facility (Davis, CA) for C and N analysis utilizing an elemental analyzer attached to an isotope ratio mass spectrometer. \n\nThe samples were obtained to determine particle size to carbon and nitrogen relationships for models, while gaining insights into the origins of particulate organic matter in the Oxygen Deficient Zone. \n\nSamples were collected by Jacob Cram of Horn Point Laboratory (University of Maryland Center for Environmental Science) and his lab members.  \n\nFilters were prepped in the lab, and data were analyzed by Clara Fuchsman of Horn Point Laboratory, a part of the University of Maryland Center for Environmental Science.\n\ncdm_data_type = Other\nVARIABLES:\nStation (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nDate (unitless)\ndepth (m)\n... (7 more variables)\n https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_948682_v1_fgdc.xml https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_948682_v1_iso19115.xml https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_948682_v1/index.htmlTable https://www.bco-dmo.org/dataset/948682 (external link) https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_948682_v1.rss https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_948682_v1&showErrors=false&email= BCO-DMO bcodmo_dataset_948682_v1
log in [ETNP Sediment Trap Fluxes and 13C] - Sinking Organic Particle fluxes and stable C isotopes (collected with sediment traps) from the Eastern Tropical North Pacific on cruises SKQ201617S, RR1805, and KM1920 (2017–2019) (Dimensions: Diversity, assembly and function of microbial communities on suspended and sinking particles in a marine Oxygen Deficient Zone) Fluxes of sinking organic carbon and nitrogen and the isotopic composition of organic carbon were obtained from free floating, unpoisoned surface tethered sediment traps during three cruises in the Eastern Tropical North Pacific Oxygen Deficient Zone: 1) at St P1 (20.1ºN 106.2ºW)  in January 2017 from the R/V Sikuliaq on cruise SKQ201617S, 2) at St P1 and St P2 (16.9ºN 107ºW) in April 2018 from the R/V Revelle on cruise RR1805, and 3) at St P2 and St P3 (21.8°N  109.9°W) in October 2019 from the R/V Kilo Moana on cruise KM1920. Trap depths ranged between 50 m and 965 m, and trap deployments ranged between 21 and 91 hours with deeper traps deployed for longer.  \n\nFor the 2017 and 2018 cruises, two types of traps were deployed: 1) in shallow waters (<150 m), traps with a solid plastic cone top (0.46 m2 opening area) were used, 2) in deep waters (>150 m), net traps (1.24 m2 opening area) were used. For 2019, cone-net hybrid sediment traps were used (0.46 m2 opening area). They consisted of a cone trap with impervious fabric above the cone used to increase the aspect ratio. \n\nFor all types of trap, the cod end had bottoms that were open during deployment and during an 8 hour equilibration period at the target depth performed to remove oxygen contamination. Cod ends were closed with a gate valve, using a pre-programmed electronic dissolving link (burn wire) system controlled by an onboard Arduino microcontroller to start collection at the correct depth, and a second gate valve that closed the top of the cod end before retrieval. Some trap deployments functioned as simple sediment traps, and some deployments were combined trap and in situ incubators. The combined trap incubators consisted of upper and lower chambers. The material used to calculate fluxes reported here was collected from the upper chamber and was not incubated. After every deployment, sediment trap material was filtered onto pre-combusted GF-75 filters (0.3 µm nominal pore size). To conform to community standards, zooplankton carcasses were not included in the measurements of carbon and nitrogen flux. Filter samples (particles only) were wafted with HCl overnight to remove carbonate.  St P1 from 2017 was sent to the University of Washington Isolab facility in the Department of Earth and Space Sciences (Seattle, WA) for C and N analysis while samples from 2018 and 2019 were sent to the UC Davis Stable Isotope Facility (Davis, CA) for C and N analysis. \n\nThese data were collected to improve our understanding of sinking fluxes of organic matter in the offshore Oxygen Deficient Zone, and to see whether Oxygen Deficient Zones reduce organic matter attenuation\n\nAllan Devol and Rick Keil and Wendi Ruef from the University of Washington designed these trap systems. Megan Duffy, Jacquelyn Neibauer, and Allan Devol and Rick Keil from the University of Washington and Clara Fuchsman from Horn Point Laboratory, part of the University of Maryland Center for Environmental Science, deployed and sampled these sediment trap systems. Megan Duffy and Clara Fuchsman analyzed the data.\n\ncdm_data_type = Other\nVARIABLES:\nStation (unitless)\n... (13 more variables)\n BCO-DMO bcodmo_dataset_948735_v2
log in [Suspended POM concentrations and isotopes from 2017, 2018 & 2019] - Suspended Organic Particle concentration and stable C and N isotopes from the Eastern Tropical North Pacific in January 2017 (R/V Sikuliaq SKQ201617S), April 2018 (R/V Roger Revelle RR1805), and October 2019 (R/V Kilo Moana KM1920) (Dimensions: Diversity, assembly and function of microbial communities on suspended and sinking particles in a marine Oxygen Deficient Zone) Suspended Organic Particle Carbon and Nitrogen concentrations and stable C and N isotopes were obtained from the Eastern Tropical North Pacific on the R/V Sikuliaq cruise SKQ201617S in January 2017, the R/V Revelle cruise RR1805 in April 2018, and the R/V Kilo Moana cruise KM1920 in October 2019. The R/V Sikuliaq cruise SKQ201617S sampled two stations in 2017: St P2 (16.5ºN 107ºW) and St P1 (20.1 ºN 106.2ºW). These two stations included an anoxic Oxygen Deficient Zone from 105-820 m for St P2 and 90-800 m for St P1. R/V Revelle cruise RR1805 sampled two stations in 2018: St P2 (16.9ºN 107ºW) and St P1 (20.3 °N 106.1°W). These two stations included an anoxic Oxygen Deficient Zone from 105-820 m for St P2 and 68-800 m for St P1. The R/V Kilo Moana cruise KM1920 sampled two stations in 2019: St P2 (16.9°N 107°W) and St P3 (21.8°N 109.9°W). These two stations included an anoxic Oxygen Deficient Zone from 110-820 m for St P2 and 160-650 m for St P3. St P3 is at the Northern Edge of the Oxygen Deficient Zone. St P2 is offshore in the core of the Oxygen Deficient Zone, and St P1 is on the continental slope.\n\nDuring all three cruises, water for bulk suspended particulate organic C and N analyses was obtained from Niskin bottles on a CTD rosette and vacuum filtered it onto pre-combusted GF/F filters. Samples were wafted with HCl to remove carbonate and samples from St P1 was sent to the UC Davis Stable Isotope Facility (Davis, CA) for C and N analysis utilizing an elemental analyzer attached to an isotope ratio mass spectrometer. Samples from St P2 were sent to the University of Washington Isolab facility in the Department of Earth and Space Sciences (Seattle, WA).\n\nSt P2 and St P1 had a secondary chlorophyll maximum. The samples were obtained to determine whether organic matter concentrations increased and isotopic composition changed at the secondary chlorophyll maximum in the Oxygen Deficient Zone.\n\nSamples were collected and St P2 samples were prepared by Clara Fuchsman when at the University of Washington. St P1 samples were prepared and all data were analyzed by Clara Fuchsman of Horn Point Laboratory, a part of the University of Maryland Center for Environmental Science.\n\ncdm_data_type = Other\nVARIABLES:\nCruise (unitless)\n... (11 more variables)\n BCO-DMO bcodmo_dataset_948637_v2

 
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