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Title Sum-
RSS Institution Dataset ID
   set  data   graph     files  public Ammonium levels in incubated bottles in tidepools from Cape Flattery, WA from 2010-
2011 (Regenerated Nitrogen project)
   ?     I   M   background (external link) RSS BCO-DMO bcodmo_dataset_489085

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute NC_GLOBAL acquisition_description String Laboratory analysis

NH4+ and NO3- concentrations were measured at the University of Washington
Marine Chemistry Lab (methods from UNESCO 1994). Concentration values from
2011 were corrected for rain dilution using the change in salinity measured
over the incubation period assuming no addition of NH4+ or NO3- to the pools
from the rainfall.\u00a0

NH4+ isotopic composition was measured according to a modified version of
Zhang et al. (2007) after isotope dilution to less than 500\u2030 to prevent
isotopic contamination of the natural abundance-level mass spectrometer
system. Briefly, NH4+ is oxidized to nitrite using hypobromite then reduced to
N2O using acetic acid buffered sodium azide before analysis on an isotope
ratio mass spectrometer (IRMS). In modification of the prior method, pre-
existing NO2- was removed prior to hypobromite addition by reaction with
sulfamic acid. To a 20 mL sample volume, 340 \u00b5L 20 mmol L-1 sulfamic acid
and 10 \u00b5L 10% HCl was added and allowed to react for 12 hours at room
temperature. A second improvement was the addition of 6 mol L-1 HCl to reduce
the pH of the sample below 7 prior to the addition of an azide-100% acetic
acid reagent. Isotope determinations were made at U. Massachusetts Dartmouth
using a GV IsoPrime IRMS, a custom purge-trap sample preparation system, and a
CTC PAL autosampler. Reproducibility was better than \u00b1 0.5\u2030. \u00a0

Filters and algal samples were dried at 60\u00b0C for 48 h and elemental and
isotopic analyses were made at the University of Chicago and at Yale
University. Samples were run using a Costech 4010 Elemental Analyzer
combustion system coupled to a Thermo DeltaV Plus IRMS via a Thermo Conflo IV
interface (University of Chicago), or using the same Elemental Analyzer
coupled to a Thermo DeltaXP Advantage IRMS via a Thermo Conflo III interface
(Yale University). \u00a0Reproducibility was better than \u00b1 0.1\u2030.
attribute NC_GLOBAL awards_0_award_nid String 474676
attribute NC_GLOBAL awards_0_award_number String OCE-0928232
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0928232 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Dr David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL awards_1_award_nid String 474685
attribute NC_GLOBAL awards_1_award_number String OCE-0928015
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0928015 (external link)
attribute NC_GLOBAL awards_1_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_1_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_1_funding_source_nid String 355
attribute NC_GLOBAL awards_1_program_manager String Dr David L. Garrison
attribute NC_GLOBAL awards_1_program_manager_nid String 50534
attribute NC_GLOBAL awards_2_award_nid String 474686
attribute NC_GLOBAL awards_2_award_number String OCE-0928152
attribute NC_GLOBAL awards_2_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0928152 (external link)
attribute NC_GLOBAL awards_2_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_2_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_2_funding_source_nid String 355
attribute NC_GLOBAL awards_2_program_manager String Dr David L. Garrison
attribute NC_GLOBAL awards_2_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String incubation NH4

S. Pather (UMass-SMAST)

version: 2014-11-04 [added site column]
replaces version: 24 January 2014
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv.pl v1.0
attribute NC_GLOBAL date_created String 2014-01-30T20:27:13Z
attribute NC_GLOBAL date_modified String 2016-08-20T03:10:46Z
attribute NC_GLOBAL defaultDataQuery String &time
attribute NC_GLOBAL doi String 10.1575/1912/6420
attribute NC_GLOBAL Easternmost_Easting double -124.57
attribute NC_GLOBAL geospatial_lat_max double 48.37
attribute NC_GLOBAL geospatial_lat_min double 48.37
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -124.57
attribute NC_GLOBAL geospatial_lon_min double -124.57
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/489085 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String IR Mass Spec
attribute NC_GLOBAL instruments_0_dataset_instrument_description String GV IsoPrime IRMS: Isotope determinations were made at U. Massachusetts Dartmouth using a GV IsoPrime IRMS, a custom purge-trap sample preparation system, and a CTC PAL autosampler. Reproducibility was better than � 0.5‰.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 489091
attribute NC_GLOBAL instruments_0_description String 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).
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB16/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Isotope-ratio Mass Spectrometer
attribute NC_GLOBAL instruments_0_instrument_nid String 469
attribute NC_GLOBAL instruments_0_supplied_name String IR Mass Spec
attribute NC_GLOBAL instruments_1_acronym String Nutrient Autoanalyzer
attribute NC_GLOBAL instruments_1_dataset_instrument_description String The nutrient autoanalyzer at UWashington was used to determine the nutrient concentrations in the water. Analyses and calibration follow the protocols of the WOCE Hydrographic Program using a Technicon AAII system.
For more information, see�http://www.ocean.washington.edu/story/Marine+Chemistry+Laboratory
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 489092
attribute NC_GLOBAL instruments_1_description String Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB04/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Nutrient Autoanalyzer
attribute NC_GLOBAL instruments_1_instrument_nid String 558
attribute NC_GLOBAL instruments_1_supplied_name String Nutrient Autoanalyzer
attribute NC_GLOBAL instruments_2_acronym String CHN_EA
attribute NC_GLOBAL instruments_2_dataset_instrument_description String Samples were run using a Costech 4010 Elemental Analyzer combustion system coupled to a Thermo DeltaV Plus IRMS via a Thermo Conflo IV interface (University of Chicago), or using the same Elemental Analyzer coupled to a Thermo DeltaXP Advantage IRMS via a Thermo Conflo III interface (Yale University). Reproducibility was better than � 0.1‰.
These instruments were used to look at the mass composition and isotopic signatures of the algal and filter material.
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 489490
attribute NC_GLOBAL instruments_2_description String A CHN Elemental Analyzer is used for the determination of carbon, hydrogen, and nitrogen content in organic and other types of materials, including solids, liquids, volatile, and viscous samples.
attribute NC_GLOBAL instruments_2_instrument_name String CHN Elemental Analyzer
attribute NC_GLOBAL instruments_2_instrument_nid String 625
attribute NC_GLOBAL instruments_2_supplied_name String CHN_EA
attribute NC_GLOBAL keywords String ammonia, ammonium, bco, bco-dmo, biological, bottle, chemical, chemistry, concentration, d15N_NH4, data, dataset, date, dissolved, dissolved nutrients, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Ammonia, erddap, identifier, latitude, longitude, management, mole, mole_concentration_of_ammonium_in_sea_water, nh4, nutrients, ocean, oceanography, oceans, office, preliminary, science, sea, seawater, site, station, time, time2, treatment, volume, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/489085 (external link)
attribute NC_GLOBAL Northernmost_Northing double 48.37
attribute NC_GLOBAL param_mapping String {'489085': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/489085/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of Massachusetts Dartmouth
attribute NC_GLOBAL people_0_affiliation_acronym String UMASSD-SMAST
attribute NC_GLOBAL people_0_person_name String Ms Santhiska Pather
attribute NC_GLOBAL people_0_person_nid String 488866
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String University of Massachusetts Dartmouth
attribute NC_GLOBAL people_1_affiliation_acronym String UMASSD-SMAST
attribute NC_GLOBAL people_1_person_name String Dr Mark A. Altabet
attribute NC_GLOBAL people_1_person_nid String 50571
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String University of Chicago
attribute NC_GLOBAL people_2_person_name String Dr Catherine Pfister
attribute NC_GLOBAL people_2_person_nid String 474679
attribute NC_GLOBAL people_2_role String Co-Principal Investigator
attribute NC_GLOBAL people_2_role_type String originator
attribute NC_GLOBAL people_3_affiliation String Yale University
attribute NC_GLOBAL people_3_person_name String Dr David Post
attribute NC_GLOBAL people_3_person_nid String 474683
attribute NC_GLOBAL people_3_role String Co-Principal Investigator
attribute NC_GLOBAL people_3_role_type String originator
attribute NC_GLOBAL people_4_affiliation String University of Massachusetts Dartmouth
attribute NC_GLOBAL people_4_affiliation_acronym String UMASSD-SMAST
attribute NC_GLOBAL people_4_person_name String Ms Santhiska Pather
attribute NC_GLOBAL people_4_person_nid String 488866
attribute NC_GLOBAL people_4_role String Student
attribute NC_GLOBAL people_4_role_type String related
attribute NC_GLOBAL people_5_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_5_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_5_person_name String Nancy Copley
attribute NC_GLOBAL people_5_person_nid String 50396
attribute NC_GLOBAL people_5_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_5_role_type String related
attribute NC_GLOBAL project String The Role of Regenerated Nitrogen for Rocky Shore Productivity
attribute NC_GLOBAL projects_0_acronym String Regenerated Nitrogen
attribute NC_GLOBAL projects_0_description String We described patterns of nitrogen isotopes that change over spatial gradients of animal abundance, with isotopic enrichment patterns consistent with a role for animal excretion (Pfister et al, ms). We have quantified the microbes associated with intertidal mussels with metagenomics (Pfister et al. 2010 and 16S rRNA sequencing of the v4 region (Pfister et al, submitted). We used a novel experimental approach in which stable isotope tracers were added to exposed tidepools utilizing them as temporary mesocosms to quantify N transformation rates (Pather et al.,L&O). Large tracer signals were observed over the typical 4-5 hr experimental period in both the dilution of the isotope label in its added form (NH4+ or NO3-) and the appearance of the label in products (e.g. NO2-) The primary advantage was that all members of community participated in the experiment allowing us to recognize the complexity of nitrogen cycling in this system. This funding also supported long-term global change research on Tatoosh Island (Wootton & Pfister 2012 ). ��
Project Summary From Original Proposal
A fundamental and persistent question in a multitude of ecosystems is the extent to which new versus regenerated nutrients support ecosystem productivity. In coastal marine systems, nitrate derived from upwelling (=new nitrogen) and ammonium regeneration in coastal waters and sediments (=regenerated nitrogen) are major nitrogen sources that fuel coastal ocean productivity. Because inorganic nitrogen availability clearly regulates production in a large number of areas, understanding nitrogen supply is essential. In open coast regions away from river mouths, nitrate inputs are determined by large-scale physical processes promoting upwelling of deep, nutrient-rich water including wind direction and intensity. In contrast, regenerated nitrogen (mainly ammonium) is generally the result of local animal and microbial processes. Along marine rocky shores, where upwelling is typically used as a proxy for productivity, we know very little about the dynamics of regenerated nutrients and their potential contribution to productivity at larger scales; only upwelling is typically used as a proxy for productivity. Associations of the abundant California mussel, Mytilus californianus, with water nutrients, algal productivity, stable isotope signatures, and microbial genetics indicate potentially strong regeneration of nitrogen by these animals and suggests an important secondary role of nitrifying microbes affiliated with these animals.
We propose collaborative work to quantify the relative contribution of regenerated nitrogen on rocky shores through censuses and experiments across a gradient of mussel abundance. We will use stable nitrogen and oxygen isotopes of ammonium, nitrite, and nitrate to disentangle the contribution of different biological processes versus upwelling to the nitrogen supply and uptake of rocky shore regions. This includes both natural abundance and tracer addition studies.

Relevant References:
2010. Pfister, C. A., F. Meyer, D. A. Antonopoulos. Metagenomic profiling of a microbial assemblage associated with the California mussel, Mytilus californianus: a node in networks of carbon and nitrogen cycling. PLoS ONE 5(5): e10518. doi:10.1371/ journal.pone.0010518. Metagenome data associated with this paper are uploaded to MGRAST server at http://metagenomics.anl.gov/
2012. Wootton, J. T. & C. A. Pfister. Carbon system measurements and potential climatic drivers at a site of rapidly declining ocean pH. PLoS ONE 7(12): e53396. doi:10.1371/ journal.pone.0053396. Data associated with this paper are uploaded to the World Ocean DataBase, https://www.nodc.noaa.gov
in press. Pather, S., C. A. Pfister, M. Altabet, D. M. Post. Ammonium cycling in the rocky intertidal: remineralization, removal and retention. Limnology and Oceanography
in review (1/2014). Pfister, C. A., M. Altabet, D. Post. Animal Regeneration and microbial retention of nitrogen along coastal rocky shores.
attribute NC_GLOBAL projects_0_end_date String 2013-08
attribute NC_GLOBAL projects_0_geolocation String coastal northeast Pacific Ocean
attribute NC_GLOBAL projects_0_name String The Role of Regenerated Nitrogen for Rocky Shore Productivity
attribute NC_GLOBAL projects_0_project_nid String 474677
attribute NC_GLOBAL projects_0_project_website String http://pfisterlab.uchicago.edu (external link)
attribute NC_GLOBAL projects_0_start_date String 2009-09
attribute NC_GLOBAL publisher_name String Nancy Copley
attribute NC_GLOBAL publisher_role String BCO-DMO Data Manager(s)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 48.37
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v29
attribute NC_GLOBAL subsetVariables String site, latitude, longitude, date
attribute NC_GLOBAL summary String We evaluated the role of mussels by adding 15N-labeled NH4+ to an assemblage
of tidepools where they were either present at natural abundance levels, or
absent through manual removal. \u00a0The role of phototrophs was separately
examined by conducting these experiments both during the day and at night.
\u00a0The tidal height of pools varied between 1.2 to 1.5 m above Mean Lower
Low Water (MLLW). Tidepools were thus isolated from each other as well as the
nearshore environment during the low tide period when experiments were
conducted. Each experiment included 4 to 5 mussel removal (MR) tidepools
(since 2002) and 4 to 5 mussel control (MC) tidepools with natural mussel
densities. \u00a0In June 2010, we performed daytime NH4+ tracer experiments
and in August 2010 nighttime experiments using the same tidepools. The
following year (July 2011) these experiments were repeated with the addition
of bottle incubations (see below) to evaluate the effects of suspended
tidepool components and extended sampling for 6 days after the initial 15N
addition to test for long-term retention of NH4+. \u00a0During the 2011
experiments, unforeseen rain reduced the salinity in some pools by up to 51%,
and we have attempted to correct for the expected dilution of NH4+ in our
tidepool rate calculations.

Because isotope enrichment levels were relatively low, we used the
conventional delta notation instead of atom% to describe variations in 15N
enrichment (where delta-15NH4+ = {(15N:14N sample \u00f7 15N:14N standard)
-1}\u00d71000\u2030, where the standard is atmospheric N2. \u00a0Tracer
labeled ammonium chloride (15NH4Cl) was added to the pools to approximate a
1000\u2030 enrichment in 2010 (doubling the 15N-NH4+ concentration) and a
2000\u2030 enrichment in 2011(tripling the 15N-NH4+ concentration). 15N
natural abundance is only 0.365% and these tracer additions thus had a
negligible effect on the overall NH4+ concentrations increasing them by only
~0.4% and ~0.8%, respectively. Tidepool volumes were estimated
spectrophotometrically using varying concentrations of food dye (Pfister
1995). Together with estimates of NH4+ concentration (from 2009 data), we
estimated the tracer addition required to achieve the targeted 15N
enrichments. However, the actual initial enrichments varied substantially,
684.4 - 2406.4\u2030 in 2010 and 781.4 - 3880.2\u2030 in 2011, likely due to
error in tidepool volume estimation and natural variations in initial NH4+
concentrations. Fortunately, we sampled immediately following each tracer
addition allowing for the determination of the true initial 15N enrichment.

Prior to tracer addition at ebb tide, 100 mL of tidepool water was syringe-
filtered (Whatman GF/F) into separate HDPE bottles for natural abundance
15NH4+ and concentration determination. \u00a0To each pool, tracer 15NH4+ was
then added and distributed by stirring with a stick. Water samples were
immediately collected for measuring initial 15N enrichment and subsequently at
2, 4, and 6 hour intervals to determine isotope and concentration time
courses. All water samples were frozen until analysis. Tidepool oxygen, pH,
and temperature (Hach HQ4D) were also collected at ~ 2 h intervals throughout
the experiment.

In 2011 we also assessed the contribution of the suspended microbial community
to NH4+ cycling by enclosing tidepool water in a 250 mL transparent
polycarbonate incubation bottle. Following tracer addition, the bottle was
filled, then left to float in the tidepool for the duration of the experiment.
Samples from bottles were filtered as described both immediately after
containment and at the end of the experiment (~6 h later).

We assessed macroalgal contribution to NH4+ removal by transplanting two
tidepool-dwelling algae species. \u00a0Prionitis sternbergii were sampled 2
weeks prior to the experiment for baseline natural abundance 15N values and
transplanted into the pools with Z-Spar Epoxy (Pfister 2007). On the day of
the experiment, the red-alga, Corallina vancouveriensis from a single source
patch, was also sampled for 15N natural abundance, inserted into pieces of
Styrofoam, and floated in each pool.

At the end of each experiment (~6 h sampling point), we sampled tidepool
particulate organic material (POM) by filtering through combusted GF/F filters
until they clogged (~ 600 mL), comparing these samples with POM similarly
sampled from the immediate nearshore. \u00a0Floating Corallina spp. samples
were collected into clean Eppendorf tubes, and similar sized pieces of
Prionitis spp. were collected from each pool into clean foil packets.\u00a0
We evaluated the extent of longer-term 15N tracer retention in 2011 by
sampling tidepool water, POM and transplanted Prionitis 1, 3, and 6 days
following tracer addition. We sampled at ebb tide and at again at slack water
just prior to high tide on the first day after tracer addition (that is, 24 h
later) and at slack water prior to high tide on Day 3 and 6.\u00a0

Relevant References:

2014\. Pather, S., C. A. Pfister, M. Altabet, D. M. Post. Ammonium cycling in
the rocky intertidal: remineralization, removal and retention. Limnology and

DOI for this dataset:\u00a0The role of regenerated nitrogen for rocky shore
productivity, Cape Flattery, Washington, 2010 &

Related Datasets:
[ammonium removal by seaweeds](\\https://www.bco-dmo.org/dataset/489420\\)
[filter tracer content](\\https://www.bco-dmo.org/dataset/489283\\)
[natural abundance N and C filter content](\\http://www.bco-
[tidepool ammonium and mussels](\\https://www.bco-dmo.org/dataset/488860\\)
attribute NC_GLOBAL title String Ammonium levels in incubated bottles in tidepools from Cape Flattery, WA from 2010-2011 (Regenerated Nitrogen project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -124.57
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.0-alpha
variable site   String  
attribute site description String sampling location
attribute site ioos_category String Unknown
attribute site long_name String Site
attribute site units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 48.37, 48.37
attribute latitude axis String Y
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String latitude; north is positive
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -124.57, -124.57
attribute longitude axis String X
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String longitude; east is positive
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable treatment   String  
attribute treatment description String mussels removed or present in tidepool
attribute treatment ioos_category String Unknown
attribute treatment long_name String Treatment
attribute treatment units String unitless
variable station   byte  
attribute station _FillValue byte 127
attribute station actual_range byte 9, 22
attribute station description String tidepool identification number
attribute station ioos_category String Identifier
attribute station long_name String Station
attribute station units String unitless
variable volume   float  
attribute volume _FillValue float NaN
attribute volume actual_range float 33.19, 322.58
attribute volume description String estimated volume of tidepool
attribute volume ioos_category String Unknown
attribute volume long_name String Volume
attribute volume units String liters
variable bottle   String  
attribute bottle description String isotope bottle identification number
attribute bottle ioos_category String Unknown
attribute bottle long_name String Bottle
attribute bottle units String unitless
variable date   int  
attribute date _FillValue int 2147483647
attribute date actual_range int 20110716, 20110716
attribute date description String date samples collected in yyyymmdd format
attribute date ioos_category String Time
attribute date long_name String Date
attribute date units String unitless
variable time2   String  
attribute time2 description String time samples collected
attribute time2 ioos_category String Time
attribute time2 long_name String Time
attribute time2 units String HH:MM
variable NH4   float  
attribute NH4 _FillValue float NaN
attribute NH4 actual_range float 3.02, 16.44
attribute NH4 colorBarMaximum double 5.0
attribute NH4 colorBarMinimum double 0.0
attribute NH4 description String ammonium concentration
attribute NH4 ioos_category String Dissolved Nutrients
attribute NH4 long_name String Mole Concentration Of Ammonium In Sea Water
attribute NH4 units String microMoles
variable d15N_NH4   float  
attribute d15N_NH4 _FillValue float NaN
attribute d15N_NH4 actual_range float 430.81, 3880.23
attribute d15N_NH4 colorBarMaximum double 5.0
attribute d15N_NH4 colorBarMinimum double 0.0
attribute d15N_NH4 description String nitrogen isotopic composition (delta 15N:N14) of ammonium
attribute d15N_NH4 ioos_category String Dissolved Nutrients
attribute d15N_NH4 long_name String Mole Concentration Of Ammonium In Sea Water
attribute d15N_NH4 units String parts per thousand vs. VSMOW (Vienna Standard Mean Ocean Water)

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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