19: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"] 1a:T785,CTD casts were performed at Friday Harbor, WA in August of 2021. These data were collected as part of the following study: Data collected as part of this study include nitrogen isotope ratio data for coral tissue and skeleton of the scleractinian cold-water coral Balanophyllia elegans collected at Friday Harbor, WA. Data was collected between March 2019 and August 2021. These data include paired measurements of the N isotope ratio (d15N) of coral tissue and skeleton. Tissue was measured using and Elemental Analyzer (EA)-coupled Isotope Ratio Mass Spectrometer (IRMS) and skeleton samples were first dissolved and organic nitrogen was oxidized to nitrate with persulfate before being run on a GC-IRMS with the denitrifier method. These data also include the results of two culture experiments with the same species of corals. The corals in the first culture experiment were fed Artemia diets with different known d15N in order to quantify change in the tissue d15N in response to a change in the food source and to determine the offset in d15N between the coral tissue and its diet. The starvation trial culture experiment was conducted to evaluate the effects of starvation on the d15N of coral tissue. For both experiments coral tissue was analyzed using an EA-IRMS. This data also includes the d15N of the respective Artemia diets. Finally, included in this data is hydrological and particulate matter data collect at the site the corals were collected (near Friday Harbor, WA). This data includes nitrate d15N and d18O, suspended particulate organic matter d15N, net tow material d15N, and data collected from a CTD profiler. This data enhances the understanding of cold-water coral diet and trophic position. This data improves the understanding of the relationship between surface nitrate d15N and the d15N recorded in the coral skeleton which is useful for enhancing the resolution of coral d15N paleoproxies. 1b:Te93,NSF abstract: Refining the use of scleractinian cold-water coral skeleton-bound d15N as a proxy for marine N cycling Recent studies show that cold-water corals and their skeletons provide valuable information about the marine nitrogen (N) cycle. This information can shed light on the processes that both drive and respond to changes in Earth’s climate. Cold-water corals are found across the global ocean and can be dated with decadal precision, offering spatial and temporal records of the N cycle in the past. In addition, a single skeleton can be used to reconstruct both surface and deep ocean composition. Despite the promise of cold-water corals, we don’t fully understand how they record changes in the marine N cycle. We must strengthen this understanding before we use cold-water corals to produce reliable records of marine N cycling across space and time, across different coral species, and under different lifestyle and feeding patterns. This project examines how the isotopic composition of organic N trapped in coral skeletons is linked to marine N cycle properties. The study includes a series of lab experiments, measurements of live corals sampled from the natural environment, and measurements of coral skeletal material from different ocean regions and depth horizons archived in museums. The project involves undergraduates at St. Olaf College, Pomona College and Mt. San Antonio College, one of the largest community colleges in Southern California. These students will conduct the research with scientists and peers in collaborating labs. Participation in the project will build student research skills and scientific knowledge for advanced study and prepare students for the scientific workforce. The project will also develop educational materials, including YouTube videos, to promote interest in marine science and awareness of how climate change influences global oceans. These educational materials will be created in collaboration with high school students from underrepresented groups. The main tool used to investigate marine N cycle history is the isotope composition of particulate organic nitrogen (δ15N-PON) exported from the euphotic zone, which can be accessed using sedimentary archives such as foraminiferal tests, anoxic sediments and soft corals. Recently, the δ15N of organic N trapped within asymbiotic scleractinian cold-water coral (CWC) skeletons has been shown to record the δ15N-PON exported from the surface ocean (Wang et al. 2014; Wang et al. 2017). In order to reliably apply CWC δ15N as a proxy, however, we must explain a ~8.5‰ offset between the δ15N of organic nitrogen within the CWC skeleton and the exported δ15N-PON in regions of coral growth (Wang et al. 2014). The nature of the δ15N offset must be accounted for to be confident that CWC records marine N cycle history consistently across space and time, across different coral species, and for corals with different lifestyle conditions. Through coral culture experiments, measurements of live corals samples from the natural environment, and archives of corals skeletal material from different ocean regions and depth horizons, this research will test whether the offset arises from: (1) a biosynthetic isotope offset between CWC tissue and skeleton, (2) an unusual trophic transfer between CWC tissue and diet, and/or (3) coral feeding on material with elevated δ15N relative to exported δ15N-PON. This work will also provide estimates of N turnover time in CWC, which are scant, and will inform trophic ecology of CWC. 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:["$","$L19",null,{"dataset":{"_id":"920001","description":"

See \"Related Datasets\" section on this page to access data and metadata for datasets collected as part of the same study.

\n","problem":"","acquisition":"

Hydrologic depth profiles were characterized with a CastAway-CTD profiler. These casts were conducted at the same time as a part of a related particulate dataset collected near Friday Harbor. See dataset \"B. elegans cold water coral lab culture: particulate data\" https://www.bco-dmo.org/node/919985 and other closely related datasets listed under the \"Related Datasets\" section that were part of this study.

Taxonomic identifier for \"Balanophyllia elegans\":
\n* Accepted name: Balanophyllia (Balanophyllia) elegans Verrill, 1864
\n* Life Sciences Identifier (LSID): urn:lsid:marinespecies.org:taxname:286920

\n","processing":"

Data corrections were performed in Excel.

\n","bcodmoProcessing":"* Sheet \"CTD\" of submitted file \"BCO-DMO data.xlsx\" was imported into the BCO-DMO data system for this dataset. Missing data value was described as \"NA=no data value\" however no NA occurred in the CTD table. Other sheets in this file were imported as separate datasets in the BCO-DMO catalog (see Related Datasets section)\r\n* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores. Can not start with a number]\r\n\r\n* Cast Datetime (UTC) converted to ISO 8601 format datetime with timezone","title":"CTD data from casts at Friday Harbor, WA in August of 2021 as part of a study of cold-water coral Balanophyllia elegans diet and trophic position","nickname":"B. elegans cold water coral lab culture: CTD","dataUrl":"","currentState":"Final no updates expected","currentStateId":"7","validated":true,"restricted":false,"version":"1","version_date":"2024-02-09T05:00:00.000Z","abstract":"$1a","citation":"Gothmann, A. M., Granger, J., Prokopenko, M. (2024) CTD data from casts at Friday Harbor, WA in August of 2021 as part of a study of cold-water coral Balanophyllia elegans diet and trophic position. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-02-09 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.920001.1 [access date]","citationParts":{"identifier":"doi:10.26008/1912/bco-dmo.920001.1","versionDate":"2024-02-09","versionId":"1","year":"2024","title":"CTD data from casts at Friday Harbor, WA in August of 2021 as part of a study of cold-water coral Balanophyllia elegans diet and trophic position","authors":"Gothmann, A. M., Granger, J., Prokopenko, M.","publisher":"Biological and Chemical Oceanography Data Management Office (BCO-DMO)."},"doi":"10.26008/1912/bco-dmo.920001.1","release_date":null,"field_dataset_location":"Friday Harbor, WA","temporal_extent":{"start":"2021-08-02T04:00:00.000Z","end":"2021-08-03T04:00:00.000Z"},"temporal":{"resolution":"time:unitDay","type":"time:Interval","start":{"value":"1627876800","label":"2021-08-02"},"end":{"value":"1627963200","label":"2021-08-03"}},"spatial_extent":{"shape":"polygon","center":{"latitude":48.554070522769,"longitude":-123.00991315751},"wkt":"POLYGON ((-123.0137764 48.5460371, -123.0060498 48.5460371, -123.0060498 48.5621039, -123.0137764 48.5621039, -123.0137764 48.5460371))","north":48.5621039,"east":-123.0060498,"south":48.5460371,"west":-123.0137764},"dataset_type":["Other Field Results"],"keywords":["oceans"],"data_files":[{"id":"937925","title":"920001_v1_ctd.csv","url":"https://datadocs.bco-dmo.org/dataset/920001/file/qAr474RfkojXgA/920001_v1_ctd.csv","showTableUrl":"https://www.bco-dmo.org/dataset/920001/data/view/937925","description":"Primary data file for dataset ID 920001, version 1","filename":"920001_v1_ctd.csv","bytesize":51039,"checksum":{"value":"87859ada2c8fa77188951b69e2a716dc","Algorithm":{"_id":"190","name":"MD5"}},"mimetype":"text/csv","fileType":{"_id":"192","name":"Comma Separated Values (.csv)"},"isErddap":"bcodmo_dataset_920001_v1","date":"","isPublicDuringEmbargo":false,"primaryDataFile":true,"showTable":true,"restricted":false}],"supplemental_files":[],"roles":[{"role":{"_id":"140","name":"Co-Principal Investigator"},"performedBy":{"_id":"893818","name":"Anne M. Gothmann"},"performedAtOrganization":{"_id":"893817","name":"Saint Olaf College"}},{"role":{"_id":"140","name":"Co-Principal Investigator"},"performedBy":{"_id":"528937","name":"Julie Granger"},"performedAtOrganization":{"_id":"85","name":"University of Connecticut"}},{"role":{"_id":"140","name":"Co-Principal Investigator"},"performedBy":{"_id":"675316","name":"Maria Prokopenko"},"performedAtOrganization":{"_id":"555682","name":"Pomona College"}},{"role":{"_id":"128","name":"Student"},"performedBy":{"_id":"919963","name":"Josie Mottram"},"performedAtOrganization":{"_id":"893817","name":"Saint Olaf College"}},{"role":{"_id":"145","name":"BCO-DMO Data Manager"},"performedBy":{"_id":"643627","name":"Amber D. York"},"performedAtOrganization":{"_id":"191","name":"Woods Hole Oceanographic Institution"}}],"deployments":[],"funding":[{"_id":"893810","name":"OCE-1949119","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=1949119"},{"_id":"893815","name":"OCE-1949984","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=1949984"},{"_id":"893821","name":"OCE-1949132","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=1949132"}],"instruments":[{"_id":"936925","name":"","description":"","type_id":"893178","type_name":"SonTek CastAway-CTD","type_desc":"The Sontek CastAway-CTD (manufactured by Xylem) is a handheld castable instrument that provides instantaneous profiles of temperature, salinity, and sound speed. Each cast is referenced with both time and location using its built-in GPS receiver. The CastAway software displays profiles of the casts in addition to mapping the locations of the data collection points. The CastAway-CTD has a 5 Hz response and sampling rate, accurate to 0.1 (PSS-78), 0.05° Celsius.\r\n\r\nConductivity range is 0 to 100,000 µS/cm.\r\nTemperature range is -5° to 45° Celsius.\r\nPressure range is 0 to 100 decibars.\r\n\r\nFurther specs and information can be found on the manufacturer's website: https://www.xylem.com/en-us/brands/wtw/wtw-products/castaway-ctd/","type_acronym":"CastAway-CTD"}],"parameters":[{"_id":"936949","name":"Station","format":"","frictionlessType":"string","description":"

Number assigned to each station where a CTD cast was performed

","units":{"_id":"","name":"unitless"},"type":{"_id":"987","name":"station","description":"

Station identifier; a unique number or alphanumeric string designating a general geographic location at which one or more sampling activities may occur.

"}},{"_id":"936950","name":"File_name","format":"","frictionlessType":"string","description":"

File identifier for each CTD cast

","units":{"_id":"","name":"unitless"},"type":{"_id":"659543","name":"file_name","description":"

File name

"}},{"_id":"936951","name":"Cast_time_UTC","format":"%Y-%m-%dT%H%MZ","frictionlessType":"datetime","description":"

Date and time of the cast in format mm/dd/yy hh:mm:ss (Time Zone: UTC)

","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":"936952","name":"Start_latitude","format":"","frictionlessType":"number","description":"

Latitude of the start of the CTD cast, North is positive

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

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

"}},{"_id":"936953","name":"Start_longitude","format":"","frictionlessType":"number","description":"

Longitude at the start of the CTD cast, West is negative

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

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

"}},{"_id":"936954","name":"Pressure","format":"","frictionlessType":"number","description":"

Pressure of CTD relative to water surface

","units":{"_id":"","name":"decibar (db)"},"type":{"_id":"732","name":"pressure","description":"

water pressure at measurement; depth reported as pressure; positive number increasing with water depth

"}},{"_id":"936955","name":"Depth","format":"","frictionlessType":"number","description":"

Depth of CTD relative to water surface

","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":"936956","name":"Temperature","format":"","frictionlessType":"number","description":"

Temperature

","units":{"_id":"","name":"celcius (degC)"},"type":{"_id":"733","name":"temperature","description":"

water temperature at measurement depth

"}},{"_id":"936957","name":"Conductivity","format":"","frictionlessType":"number","description":"

Conductivity

","units":{"_id":"","name":"microsiemens per centimeter (uS/cm)"},"type":{"_id":"779","name":"conductivity","description":"

Conductivity. Units and collection methods may vary. Often reported in Siemens/meter.

When used in a JGOFS/GLOBEC project this is the conductivity in Siemens/meter for the primary conductivity sensor on a CTD.

"}},{"_id":"936958","name":"Specific_conductance","format":"","frictionlessType":"number","description":"

specific conductance

","units":{"_id":"","name":"microsiemens per centimeter (uS/cm)"},"type":{"_id":"1894","name":"specific conductance","description":"

Electrical conductivity is a measure of a water’s ability to conduct electricity, and therefore a measure of the water’s ionic activity and content. The higher the concentration of ionic (dissolved) constituents, the higher the conductivity. Conductivity of the same water changes substantially as its temperature changes. This can have a confounding effect on attempts to compare this feature across different waters, or seasonal changes in this parameter for a particular body of water. The use of specific conductance [SC; units of microSiemens per centimeter (µS·cm-1) or miliSiemens per centimeter (mS·cm-1], the conductivity normalized to temperature of 25 ºC, eliminates this complication and allows valuable comparisons to be made.

"}},{"_id":"936959","name":"Salinity","format":"","frictionlessType":"number","description":"

Salinity

","units":{"_id":"","name":"practical salinity units (PSU)"},"type":{"_id":"955","name":"sal","description":"

Salinity: The amount (mass or quantity of matter) of salt per amount (volume or mass) of a body of water.

"}},{"_id":"936960","name":"Sound_velocity","format":"","frictionlessType":"number","description":"

Sound velocity

","units":{"_id":"","name":"meters per second (m/s)"},"type":{"_id":"975","name":"sound_vel","description":"

sound velocity in sea water, in meters/second

"}},{"_id":"936961","name":"Density","format":"","frictionlessType":"number","description":"

Density of the water

","units":{"_id":"","name":"kilograms per cubic meter (kg/m3)"},"type":{"_id":"806","name":"density","description":"

density, in mass per unit volume

"}}],"related_publications":[{"id":"739214","citation":"Sigman, D. M., Casciotti, K. L., Andreani, M., Barford, C., Galanter, M., & Böhlke, J. K. (2001). A Bacterial Method for the Nitrogen Isotopic Analysis of Nitrate in Seawater and Freshwater. Analytical Chemistry, 73(17), 4145–4153. doi:10.1021/ac010088e\r\n","relation_type":["Methods"],"relation_desc":""}],"related_datasets":[{"_id":"919993","name":"B. elegans cold water coral lab culture: starvation trial","url":"","relation_type":"IsRelatedTo","type_desc":"

The dataset is related to another dataset.

\n","relation_desc":"Datasets collected as part of the same study scleractinian cold-water coral Balanophyllia elegans diet and trophic position at Friday Harbor, WA. Data was collected between March 2019 and August 2021.","citation":"Gothmann, A. M., Granger, J., Prokopenko, M. (2024) Nitrogen isotope ratio data for coral tissue and skeleton samples of the scleractinian cold-water coral Balanophyllia elegans collected at Friday Harbor, WA from experiments conducted between 2019 and 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-02-08 doi:10.26008/1912/bco-dmo.919958.1"}],"services":[{"grouping":"","items":[{"name":"View Data","description":"An in-browser view of the primary tabular data file","url":"https://www.bco-dmo.org/dataset/920001/data/view","contentType":"text/html","actionType":"view"}]},{"grouping":"ERDDAP","items":[{"name":"SUBSET DATA","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_920001_v1.html","contentType":"text/html","actionType":"tool"},{"name":"VIEW TABLE","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_920001_v1.htmlTable","contentType":"text/html","actionType":"view"},{"name":"CSV","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_920001_v1.csv","contentType":"text/csv","actionType":"download"},{"name":"TSV","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_920001_v1.tsv","contentType":"text/tsv","actionType":"download"},{"name":"GeoJSON","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_920001_v1.geoJson","contentType":"application/geo+json","actionType":"download"},{"name":"MATLAB","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_920001_v1.mat","contentType":"text/x-matlab","actionType":"download"},{"name":"netCDF","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_920001_v1.nc","contentType":"application/x-netcdf","actionType":"download"},{"name":"ODV","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_920001_v1.odvTxt","contentType":"text/plain","actionType":"download"}]},{"grouping":"Metadata","items":[{"name":"HTML","description":"A simple HTML page of the dataset metadata","url":"https://www.bco-dmo.org/dataset/920001/description","contentType":"text/html","actionType":"view"},{"name":"PDF","description":"A PDF of the HTML dataset metadata","url":"https://www.bco-dmo.org/dataset/920001/Dataset_description.pdf","contentType":"application/pdf","actionType":"download"},{"name":"ISO 19115-2 (NOAA Profile)","description":"","url":"https://www.bco-dmo.org/dataset/920001/iso","contentType":"application/xml","actionType":"download"}]}],"programs":[],"projects":[{"_id":"893811","name":"Collaborative Research: Refining the use of scleractinian cold-water coral skeleton-bound d15N as a proxy for marine N cycling","acronym":"Coral-bound N","description":"$1b"}],"archives":[{"id_value":"10.26008/1912/bco-dmo.920001.1","url":"https://doi.org/10.26008/1912/bco-dmo.920001.1","date_assigned":"2024-09-17","version_date":"2024-02-09","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":176},"downloads":{"count":269}}}}]