ERDDAP > info > bcodmo_dataset_488860

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph		files	public	[tidepool ammonium and mussels] - Ammonium in tidepools with and without mussels from Cape Flattery, WA from 2010-2011 (Regenerated Nitrogen project) (The Role of Regenerated Nitrogen for Rocky Shore Productivity)		F   I   M	background			BCO-DMO	bcodmo_dataset_488860

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. \u00a0
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
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	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
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	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
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	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	tidepool ammonium with/without mussels 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/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2014-01-29T15:05:30Z
attribute	NC_GLOBAL	date_modified	String	2016-08-20T03:10:46Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
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/488860
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	488869
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/
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	488870
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/
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	489489
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	instruments_3_dataset_instrument_description	String	A Hach HQ4D hand-held meter was used to measure pH,temperature and dissolved oxygen.
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	489458
attribute	NC_GLOBAL	instruments_3_description	String	An analytical instrument that can measure multiple parameters, such as pH, EC, TDS, DO and temperature with one device and is portable or hand-held.
attribute	NC_GLOBAL	instruments_3_instrument_name	String	Multi Parameter Portable Meter
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	489457
attribute	NC_GLOBAL	keywords	String	altimetry, ammonia, ammonium, bco, bco-dmo, biological, bottle, bottle_iso, bottle_nut, chemical, chemistry, concentration, d15N_NH4, data, dataset, date, day, day_night, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Ammonia, Earth Science > Oceans > Ocean Chemistry > Nitrate, erddap, iso, laboratory, latitude, longitude, management, mole, mole_concentration_of_ammonium_in_sea_water, mole_concentration_of_nitrate_in_sea_water, n02, nh4, NH4_15N_added, NH4_15N_tracer, night, nitrate, no3, nut, O2, ocean, oceanography, oceans, office, oxygen, preliminary, sal, satellite, science, sea, seawater, site, station, temperature, time, time2, treatment, volume, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/488860/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/488860
attribute	NC_GLOBAL	Northernmost_Northing	double	48.37
attribute	NC_GLOBAL	param_mapping	String	{'488860': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/488860/parameters
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	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	Regenerated Nitrogen
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
attribute	NC_GLOBAL	projects_0_start_date	String	2009-09
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
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 v55
attribute	NC_GLOBAL	subsetVariables	String	site,latitude,longitude
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. \u00a0 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 Oceanography 59:361-372.\u00a0[http://aslo.org/lo/toc/vol_59/issue_2/0361.htm](\\http://aslo.org/lo/toc/vol_59/issue_2/0361.html\\) DOI for this dataset:\u00a0The role of regenerated nitrogen for rocky shore productivity, Cape Flattery, Washington, 2010 & 2011.\u00a0Handle:\u00a0[http://hdl.handle.net/1912/6420](\\http://hdl.handle.net/1912/6420\\).\u00a0DOI:10.1575/1912/6420 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- dmo.org/dataset/489310\\) [tidepool incubation ammonium](\\https://www.bco-dmo.org/dataset/489085\\)
attribute	NC_GLOBAL	title	String	[tidepool ammonium and mussels] - Ammonium in tidepools with and without mussels from Cape Flattery, WA from 2010-2011 (Regenerated Nitrogen project) (The Role of Regenerated Nitrogen for Rocky Shore Productivity)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-124.57
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	site		String
attribute	site	bcodmo_name	String	site
attribute	site	description	String	sampling location
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	bcodmo_name	String	latitude
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	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
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	bcodmo_name	String	longitude
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	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	day_night		String
attribute	day_night	bcodmo_name	String	time_of_day
attribute	day_night	description	String	part of day for experiment
attribute	day_night	long_name	String	Day Night
attribute	day_night	units	String	unitless
variable	NH4_15N_tracer		float
attribute	NH4_15N_tracer	_FillValue	float	NaN
attribute	NH4_15N_tracer	actual_range	float	0.05, 0.1
attribute	NH4_15N_tracer	bcodmo_name	String	unknown
attribute	NH4_15N_tracer	colorBarMaximum	double	5.0
attribute	NH4_15N_tracer	colorBarMinimum	double	0.0
attribute	NH4_15N_tracer	description	String	concentration of 15N-NH4 tracer added to tidepool
attribute	NH4_15N_tracer	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	NH4_15N_tracer	units	String	Molar
variable	treatment		String
attribute	treatment	bcodmo_name	String	treatment
attribute	treatment	description	String	mussels removed or present in tidepool
attribute	treatment	long_name	String	Treatment
attribute	treatment	units	String	unitless
variable	station		byte
attribute	station	_FillValue	byte	127
attribute	station	actual_range	byte	8, 40
attribute	station	bcodmo_name	String	sta
attribute	station	description	String	tidepool identification number
attribute	station	long_name	String	Station
attribute	station	units	String	unitless
variable	volume		float
attribute	volume	_FillValue	float	NaN
attribute	volume	actual_range	float	23.11, 322.58
attribute	volume	bcodmo_name	String	unknown
attribute	volume	description	String	estimated volume of tidepool
attribute	volume	long_name	String	Volume
attribute	volume	units	String	liters
variable	bottle_iso		String
attribute	bottle_iso	bcodmo_name	String	bottle
attribute	bottle_iso	description	String	isotope bottle identification number
attribute	bottle_iso	long_name	String	Bottle Iso
attribute	bottle_iso	units	String	unitless
variable	bottle_nut		String
attribute	bottle_nut	bcodmo_name	String	bottle
attribute	bottle_nut	description	String	nutrient bottle identification number
attribute	bottle_nut	long_name	String	Bottle Nut
attribute	bottle_nut	units	String	unitless
variable	date		int
attribute	date	_FillValue	int	2147483647
attribute	date	actual_range	int	20100626, 20110722
attribute	date	bcodmo_name	String	date
attribute	date	description	String	date samples collected in yyyymmdd format.
attribute	date	long_name	String	Date
attribute	date	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	date	units	String	unitless
variable	time2		String
attribute	time2	bcodmo_name	String	time
attribute	time2	description	String	time samples collected
attribute	time2	long_name	String	Time
attribute	time2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/
attribute	time2	units	String	HH:MM
variable	NH4_15N_added		float
attribute	NH4_15N_added	_FillValue	float	NaN
attribute	NH4_15N_added	actual_range	float	0.0, 159.52
attribute	NH4_15N_added	bcodmo_name	String	unknown
attribute	NH4_15N_added	colorBarMaximum	double	5.0
attribute	NH4_15N_added	colorBarMinimum	double	0.0
attribute	NH4_15N_added	description	String	volume of 15N-NH4 tracer added to tidepool
attribute	NH4_15N_added	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	NH4_15N_added	units	String	microliters
variable	sal		byte
attribute	sal	_FillValue	byte	127
attribute	sal	actual_range	byte	13, 29
attribute	sal	bcodmo_name	String	sal
attribute	sal	description	String	salinity
attribute	sal	long_name	String	Sal
attribute	sal	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/
attribute	sal	units	String	unitless
variable	temp		float
attribute	temp	_FillValue	float	NaN
attribute	temp	actual_range	float	9.0, 14.6
attribute	temp	bcodmo_name	String	temperature
attribute	temp	description	String	temperature
attribute	temp	long_name	String	Temperature
attribute	temp	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/
attribute	temp	units	String	degrees Celsius
variable	O2		float
attribute	O2	_FillValue	float	NaN
attribute	O2	actual_range	float	8.5, 196.3
attribute	O2	bcodmo_name	String	dissolved Oxygen
attribute	O2	description	String	percent saturation of oxygen
attribute	O2	long_name	String	O2
attribute	O2	units	String	percent
variable	NO3		float
attribute	NO3	_FillValue	float	NaN
attribute	NO3	actual_range	float	0.68, 42.72
attribute	NO3	bcodmo_name	String	NO3
attribute	NO3	colorBarMaximum	double	50.0
attribute	NO3	colorBarMinimum	double	0.0
attribute	NO3	description	String	NO3
attribute	NO3	long_name	String	Mole Concentration Of Nitrate In Sea Water
attribute	NO3	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/NTRAIGGS/
attribute	NO3	units	String	unknown
variable	NH4		float
attribute	NH4	_FillValue	float	NaN
attribute	NH4	actual_range	float	0.29, 43.5
attribute	NH4	bcodmo_name	String	Ammonium
attribute	NH4	colorBarMaximum	double	5.0
attribute	NH4	colorBarMinimum	double	0.0
attribute	NH4	description	String	NH4
attribute	NH4	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	NH4	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AMONAAZX/
attribute	NH4	units	String	unknown
variable	d15N_NH4		float
attribute	d15N_NH4	_FillValue	float	NaN
attribute	d15N_NH4	actual_range	float	-2.35, 3880.23
attribute	d15N_NH4	bcodmo_name	String	d15N
attribute	d15N_NH4	colorBarMaximum	double	5.0
attribute	d15N_NH4	colorBarMinimum	double	0.0
attribute	d15N_NH4	description	String	d15N_NH4
attribute	d15N_NH4	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	d15N_NH4	units	String	unknown

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