1b:I[42426,["/_next/static/immutable/chunks/1xctgzqre-wsy.js","/_next/static/immutable/chunks/06_-wz6pdtp2b.js","/_next/static/immutable/chunks/30e52g49hg40p.js","/_next/static/immutable/chunks/02yq6tul2z-oh.js","/_next/static/immutable/chunks/10bx_ec2vj7n_.js","/_next/static/immutable/chunks/33bfn03fo8xnt.js","/_next/static/immutable/chunks/0tfjf78scu61b.js","/_next/static/immutable/chunks/31xnvej4n1bi9.js"],"default"] 1c:Tf4d,NSF Award Abstract: The downward settling of organic material transports carbon out of the ocean surface, as part of a process called the biological pump. However, only a small fraction of organic material produced by organisms in surface waters makes it to the deep ocean. The rest can be fragmented or consumed (respired) by bacteria or larger organisms; the role of each process remains in question. Guided by recent results from the Pacific Ocean, the investigators will use the stable isotopes of carbon and nitrogen in amino acids to identify the input of fresh algal material, zooplankton feces, and bacteria to the biological pump in the North Atlantic spring bloom. With data from contrasting locations, the investigators will test and develop their isotopic models so they can be used to help predict global patterns in carbon transport. The work will be part of a large oceanographic field program (NASA EXPORTS). The tremendous amount of data collected in this program will aid the development and interpretation of the isotopic models. To share results broadly, the investigators will produce and distribute several episodes of Voice of the Sea, a local television program that will air in Hawaii and the Pacific islands. Episodes will be posted online and publicized through social media to the south Florida community. The project will support a Ph.D. student and an undergraduate student at University of Miami, which serves a 25% Hispanic population, and a Ph.D. student and an undergraduate student at University of Hawaii, a designated minority-serving institution. The proposed work will assess the relative importance of packaging organic matter in fecal material, particle disaggregation, microbial reworking, and zooplankton dietary usage on vertical patterns of particle flux across contrasting oceanic provinces, using empirical methods independent of incubation techniques or metabolic rate measurements. From their existing work in relatively low-flux environments of the Pacific Ocean, the investigators have developed two nascent models: (1) a mixing model that uses the compound-specific isotope analysis of amino acids (AA-CSIA) to estimate the phytodetritus, fecal pellet, and microbially degraded composition of particles, such that the vertical alteration mechanisms and size distribution of these materials can be detected; and (2) an inverse relationship between carbon flux into the deep ocean and the reliance of mesopelagic food webs on small, degraded particles. In this project, the investigators will test these two models by applying the same methods to the recent NASA EXPORTS field study in a high productivity, high flux regime, the North Atlantic spring bloom. The first EXPORTS field study in the subarctic Pacific provided some of the materials from which the models were developed. Application and refinement of the investigators’ newly developed isotopic indicators will enable development of a globally generalized isotopic framework for assessing the degradative history of particulate organic matter and its relationship to mesopelagic dietary resources, including small, microbially degraded particles that are often not accounted for as a metazoan dietary resource. This work capitalizes on existing, comprehensive field programs specifically focused on building a predictive framework relating surface ocean properties to the vertical flux of organic carbon. The proposed work directly addresses EXPORTS Science Question 2: What controls the efficiency of vertical transfer of organic matter below the well-lit surface ocean? The results of this work additionally will provide observational comparisons to global models of carbon flux composition and pelagic food web resources. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.6:["$","$L1b",null,{"dataset":{"_id":"880448","description":"","problem":"","acquisition":"

Sampling was conducted during RRS James Cook cruise JC214 from May 1 to June 1, 2021 in the North Atlantic. Zooplankton were collected using a multiple opening-closing net and environmental sensing system (MOCNESS). Onboard, zooplankton were wet-sieved in filtered seawater using 0.2, 0.5, 1.0, 2.0 and 5.0 mm mesh sieves into different size fractions and frozen at -20º C. Zooplankton were dried and each fraction ground using a mortar and pestle. Samples were weighed into tin capsules and isotope ratios were determined using a Costech elemental combustion system coupled to an isotope ratio mass spectrometer through a Conflo-IV interface. For details please see Hannides et al. (2013).

\n","processing":"

BCO-DMO Processing:
\n- converted all dates to YYYY-MM-DD format;
\n- added the ISO8601 (UTC) date-time field;
\n- renamed fields to comply with BCO-DMO naming conventions.

\n","bcodmoProcessing":"","title":"Size fractionated zooplankton, C:N, d13C, and d15N from RRS James Cook cruise JC214","nickname":"Size fractionated zooplankton, C:N, d13C, and d15N from JC214","dataUrl":"","currentState":"Final no updates expected","currentStateId":"7","validated":true,"restricted":false,"version":"1","version_date":"2022-09-19T04:00:00.000Z","abstract":"This dataset includes size fractionated zooplankton, C:N, d13C, and d15N from EXPORTS cruise JC214 on RRS James Cook from May to June 2021.","citation":"Shea, C. H., Popp, B. N., Close, H. G. (2022) Size fractionated zooplankton, C:N, d13C, and d15N from RRS James Cook cruise JC214. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-09-19 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.880448.1 [access date]","citationParts":{"identifier":"doi:10.26008/1912/bco-dmo.880448.1","versionDate":"2022-09-19","versionId":"1","year":"2022","title":"Size fractionated zooplankton, C:N, d13C, and d15N from RRS James Cook cruise JC214","authors":"Shea, C. H., Popp, B. N., Close, H. G.","publisher":"Biological and Chemical Oceanography Data Management Office (BCO-DMO)."},"doi":"10.26008/1912/bco-dmo.880448.1","release_date":null,"field_dataset_location":"","temporal_extent":{"start":"2021-05-06T04:00:00.000Z","end":"2021-05-26T04:00:00.000Z"},"temporal":{"resolution":"time:unitDay","type":"time:Interval","start":{"value":"1620273600","label":"2021-05-06"},"end":{"value":"1622001600","label":"2021-05-26"}},"spatial_extent":{"shape":"polygon","center":{"latitude":48.858999999963,"longitude":-14.934699999989},"wkt":"POLYGON ((-15.0676 48.7422, -14.8018 48.7422, -14.8018 48.9758, -15.0676 48.9758, -15.0676 48.7422))","north":48.9758,"east":-14.8018,"south":48.7422,"west":-15.0676},"dataset_type":["Cruise Results"],"keywords":["oceans"],"data_files":[{"id":"903734","title":"jc214_zoop.csv","url":"https://datadocs.bco-dmo.org/dataset/880448/file/R88XmKRTv5716P/jc214_zoop.csv","showTableUrl":"https://www.bco-dmo.org/dataset/880448/data/view/903734","description":"Primary data file for dataset ID 880448","filename":"jc214_zoop.csv","bytesize":42204,"checksum":{"value":"eb963cd979f70adbd8bc6431fbfea28b","Algorithm":{"_id":"190","name":"MD5"}},"mimetype":"text/csv","fileType":{"_id":"192","name":"Comma Separated Values (.csv)"},"isErddap":"","date":"","isPublicDuringEmbargo":false,"primaryDataFile":true,"showTable":true,"restricted":false}],"supplemental_files":[],"roles":[{"role":{"_id":"138","name":"Principal Investigator"},"performedBy":{"_id":"51093","name":"Brian N. Popp"},"performedAtOrganization":{"_id":"126","name":"University of Hawaiʻi at Mānoa"}},{"role":{"_id":"140","name":"Co-Principal Investigator"},"performedBy":{"_id":"537128","name":"Hilary G. Close"},"performedAtOrganization":{"_id":"36","name":"University of Miami Rosenstiel School of Marine and Atmospheric Science"}},{"role":{"_id":"128","name":"Student"},"performedBy":{"_id":"880547","name":"Connor H. Shea"},"performedAtOrganization":{"_id":"126","name":"University of Hawaiʻi at Mānoa"}},{"role":{"_id":"145","name":"BCO-DMO Data Manager"},"performedBy":{"_id":"51498","name":"Shannon Rauch"},"performedAtOrganization":{"_id":"191","name":"Woods Hole Oceanographic Institution"}}],"deployments":[{"_id":"880457","name":"JC214","synonyms":["EXPORTS"],"dates":{"start":"2021-05-01T00:00:00.000Z","end":"2021-06-01T00:00:00.000Z"},"platform":{"_id":"54283","name":"RRS James Cook"},"chiefScientists":[{"id":"891703","name":"Jason Graff","role":"Chief Scientist"},{"id":"50855","name":"Deborah K. Steinberg","role":"Chief Scientist"}]}],"funding":[{"_id":"875565","name":"OCE-2124416","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=2124416"},{"_id":"875580","name":"OCE-2124415","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=2124415"}],"instruments":[{"_id":"880465","name":"Costech Model 4010 elemental combustion system","description":"","type_id":"793023","type_name":"Costech International Elemental Combustion System (ECS) 4010","type_desc":"The ECS 4010 Nitrogen / Protein Analyzer is an elemental combustion analyser for CHNSO elemental analysis and Nitrogen / Protein determination. The GC oven and separation column have a temperature range of 30-110 degC, with control of +/- 0.1 degC.","type_acronym":"Costech ECS 4010"},{"_id":"880466","name":"Thermo-Finnigan Delta Plus XP isotope ratio mass spectrometer with Conflo IV interface","description":"","type_id":"469","type_name":"Isotope-ratio Mass Spectrometer","type_desc":"The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).","type_acronym":"IR Mass Spec; IRMS"},{"_id":"880464","name":"MOCNESS","description":"Multiple opening-closing net and environmental sensing system (MOCNESS) net with 1 m2 opening using 0.2 mm mesh plankton nets (see Wiebe et al., 1976)","type_id":"511","type_name":"MOCNESS","type_desc":"The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. There are currently 8 different sizes of MOCNESS in existence which are designed for capture of different size ranges of zooplankton and micro-nekton Each system is designated according to the size of the net mouth opening and in two cases, the number of nets it carries. The original MOCNESS (Wiebe et al, 1976) was a redesigned and improved version of a system described by Frost and McCrone (1974). (from MOCNESS manual) ","type_acronym":"MOCNESS"}],"parameters":[{"_id":"880492","name":"Cruise","format":"","frictionlessType":"string","description":"

Cruise ID number

","units":{"_id":"","name":"unitless"},"type":{"_id":"1102","name":"cruise_id","description":"

cruise designation; name

"}},{"_id":"880493","name":"R2R_Event","format":"","frictionlessType":"string","description":"

Event number

","units":{"_id":"","name":"unitless"},"type":{"_id":"829","name":"event","description":"

Event or operation identifier; event or operation number; often derived from date/time (MMDDHHmm) of sampling and when combined with year (YYYY) is a unique sampling identifier/data processing key. Date/time is not necessarily in GMT.

"}},{"_id":"880494","name":"Latitude","format":"","frictionlessType":"number","description":"

Latitude

","units":{"_id":"","name":"degrees North"},"type":{"_id":"730","name":"latitude","description":"

latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes

"}},{"_id":"880495","name":"Longitude","format":"","frictionlessType":"number","description":"

Longitude

","units":{"_id":"","name":"degrees East"},"type":{"_id":"731","name":"longitude","description":"

longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datasets as degrees, minutes

"}},{"_id":"880496","name":"ISO_DateTime_UTC","format":"%Y-%m-%dT%H:%MZ","frictionlessType":"datetime","description":"

Date and time (UTC) in ISO8601 format: YYYY-MM-DDThh:mmZ

","units":{"_id":"","name":"unitless"},"type":{"_id":"1908","name":"ISO_DateTime_UTC","description":"

Date/Time (UTC) ISO formatted
\nThis standard is based on ISO 8601:2004(E) and takes on any of the following forms:
\n2009-08-30T09:05:00[.xx] (local time)
\n2009-08-30T14:05:00[.xx]Z (UTC time)
\n2009-08-30T14:05:00[.xx]-05:00
\nThe dashes and the colons can be dropped.
\nThe T can also be dropped \"by mutual agreement\", but one needs the trailing Z if the time is UTC.

Sample ISO_datetime_utc:
\n2009-08-30T14:05:00[.xx]Z (UTC time)

Format: YYYY-mm-ddTHH:MM:SS[.xx]Z (UTC time)

"}},{"_id":"880497","name":"Date","format":"%Y-%m-%d","frictionlessType":"date","description":"

Date (UTC) in format YYYY-MM-DD

","units":{"_id":"","name":"unitless"},"type":{"_id":"1070","name":"date","description":"

date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)

"}},{"_id":"880498","name":"Time","format":"%H:%M","frictionlessType":"time","description":"

Time (UTC) in format hh:mm

","units":{"_id":"","name":"unitless"},"type":{"_id":"1075","name":"time","description":"

Time GMT defined as HHMM; time of day; generally reported in GMT as HHMM (hours and minutes) but may also be HH.H (decimal hours) or HHMMSS (hours; minutes and seconds); in EqPac time is reported as Hawaii local time

"}},{"_id":"880499","name":"MOCNESS_Tow","format":"","frictionlessType":"integer","description":"

MOCNESS tow number

","units":{"_id":"","name":"unitless"},"type":{"_id":"1016","name":"tow","description":"

tow number/identification; applies to all towed vehicles and is generally associated with plankton net tows

"}},{"_id":"880500","name":"DayNight","format":"","frictionlessType":"string","description":"

Indicates if sampling was conducted in day or night

","units":{"_id":"","name":"unitless"},"type":{"_id":"1006","name":"time_of_day","description":"

reference to day or night observations

"}},{"_id":"880501","name":"MOCNESS_Net","format":"","frictionlessType":"integer","description":"

MOCNESS net number

","units":{"_id":"","name":"unitless"},"type":{"_id":"900","name":"net","description":"

net number/identification

"}},{"_id":"880502","name":"DepthInterval_max","format":"","frictionlessType":"integer","description":"

Depth of net opening

","units":{"_id":"","name":"meters (m)"},"type":{"_id":"808","name":"depth","description":"

Observation/sample depth below the sea surface. Units often reported as: meters, feet.

\nWhen used in a JGOFS/GLOBEC dataset the depth is a best estimate; usually but not always calculated from pressure; calculated either from CTD pressure using Fofonoff and Millard (1982; UNESCO Tech Paper #44) algorithm adjusted for 1980 equation of state for seawater (EOS80) or simply equivalent to nominal depth as recorded during sampling if CTD pressure was unavailable.

"}},{"_id":"880503","name":"DepthInterval_min","format":"","frictionlessType":"integer","description":"

Depth of net closing

","units":{"_id":"","name":"meters (m)"},"type":{"_id":"808","name":"depth","description":"

Observation/sample depth below the sea surface. Units often reported as: meters, feet.

"}},{"_id":"880504","name":"VolFilt","format":"","frictionlessType":"number","description":"

Volume of water that passed through net opening

","units":{"_id":"","name":"cubic meters (m^3)"},"type":{"_id":"542214","name":"volume","description":"

The amount of 3-dimensional space an object occupies. Capacity.
\nAs in the volume of the tank or container used in a laboratory experiment.

"}},{"_id":"880505","name":"SizeFraction_min","format":"","frictionlessType":"integer","description":"

Size fraction minimum

","units":{"_id":"","name":"micrometers (um)"},"type":{"_id":"1733","name":"filter_size","description":"

Filter mesh size

"}},{"_id":"880506","name":"SizeFraction_max","format":"","frictionlessType":"integer","description":"

Size fraction maximum

","units":{"_id":"","name":"micrometers (um)"},"type":{"_id":"1733","name":"filter_size","description":"

Filter mesh size

"}},{"_id":"880507","name":"SampleWeight","format":"","frictionlessType":"number","description":"

Mass of sample put through EA

","units":{"_id":"","name":"milligrams (mg)"},"type":{"_id":"886","name":"mass","description":"

mass; the amount of matter in an object.

"}},{"_id":"880508","name":"N","format":"","frictionlessType":"number","description":"

Mass of nitrogen contained in samples

","units":{"_id":"","name":"micrograms (ug)"},"type":{"_id":"900","name":"net","description":"

net number/identification

"}},{"_id":"880509","name":"d15N","format":"","frictionlessType":"number","description":"

Isotopic composition of nitrogen in sample relative to AIR

","units":{"_id":"","name":"‰, vs AIR"},"type":{"_id":"711970","name":"d15N","description":"

delta 15N (d15N) is a measure of the ratio of stable isotopes 15N:14N. It is commonly reported in parts per thousand (per mil, 0/00).

"}},{"_id":"880510","name":"C","format":"","frictionlessType":"number","description":"

Mass of carbon contained in sample

","units":{"_id":"","name":"micrograms (ug)"},"type":{"_id":"707571","name":"C","description":"

Elemental carbon (C)

"}},{"_id":"880511","name":"d13C","format":"","frictionlessType":"number","description":"

Isotopic composition of carbon in sample relative to V-PDB

","units":{"_id":"","name":"‰, vs VPDB"},"type":{"_id":"671305","name":"d13C","description":"

Delta 13C (d13C) is the ratio of stable isotopes 13C:12C, reported in parts per thousand (per mil, ‰).

"}},{"_id":"880512","name":"C_N_ratio","format":"","frictionlessType":"number","description":"

Molar ratio of carbon to nitrogen in sample

","units":{"_id":"","name":"mol/mol"},"type":{"_id":"1186","name":"C_to_N","description":"

Carbon to Nitrogen ratio (C:N)

"}}],"related_publications":[{"id":"751345","citation":"Hannides, C. C. S., Popp, B. N., Choy, C. A., & Drazen, J. C. (2013). Midwater zooplankton and suspended particle dynamics in the North Pacific Subtropical Gyre: A stable isotope perspective. Limnology and Oceanography, 58(6), 1931–1946. doi:10.4319/lo.2013.58.6.1931\r\n","relation_type":["Methods"],"relation_desc":""},{"id":"743462","citation":"Wiebe, P. H., K.H. Burt, S. H. Boyd, A. W. Morton (1976). A multiple opening/closing net and environment sensing system for sampling zooplankton. J. Mar. Res., 34, 313-326.","relation_type":["Methods"],"relation_desc":""}],"related_datasets":[],"services":[{"grouping":"","items":[{"name":"View Data","description":"An in-browser view of the primary tabular data file","url":"https://www.bco-dmo.org/dataset/880448/data/view","contentType":"text/html","actionType":"view"}]},{"grouping":"Metadata","items":[{"name":"HTML","description":"A simple HTML page of the dataset metadata","url":"https://www.bco-dmo.org/dataset/880448/description","contentType":"text/html","actionType":"view"},{"name":"PDF","description":"A PDF of the HTML dataset metadata","url":"https://www.bco-dmo.org/dataset/880448/Dataset_description.pdf","contentType":"application/pdf","actionType":"download"},{"name":"ISO 19115-2 (NOAA Profile)","description":"","url":"https://www.bco-dmo.org/dataset/880448/iso","contentType":"application/xml","actionType":"download"}]}],"programs":[{"_id":"757397","name":"EXport Processes in the Ocean from Remote Sensing","acronym":"EXPORTS"}],"projects":[{"_id":"875566","name":"Collaborative Research: Isotopic Indicators for Mechanisms of Organic Matter Degradation under High Productivity and High Carbon Flux Conditions (EXPORTS)","acronym":"EXPORTS OM Degradation Indicators","description":"$1c"}],"archives":[{"id_value":"10.26008/1912/bco-dmo.880448.1","url":"https://doi.org/10.26008/1912/bco-dmo.880448.1","date_assigned":"2022-09-20","version_date":"2022-09-19","archiver":"Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)","archiver_id":"272"}],"license":{"name":"Creative Commons Attribution 4.0","id":"CC-BY-4.0","uri":"https://creativecommons.org/licenses/by/4.0/","spdxUri":"https://spdx.org/licenses/CC-BY-4.0"},"metrics":{"views":{"count":355},"downloads":{"count":371}}},"fileId":"903734"}]