ERDDAP > info > HakaiHPLCResearch

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph			High performance liquid chromatography phytoplankton pigment timeseries for the northern Salish Sea and central coast, British Columbia		F   I   M	background			Hakai Institute	HakaiHPLCResearch

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	cdm_data_type	String	TimeSeriesProfile
attribute	NC_GLOBAL	cdm_profile_variables	String	project,survey,source,time
attribute	NC_GLOBAL	cdm_timeseries_variables	String	work_area,site_id
attribute	NC_GLOBAL	comment	String	##Limitations: Care should be taken when using HPLC phytoplankton pigment concentrations for community based analysis. Species within different phytoplankton groupings can show comparable pigment profiles or variable presence/absence of marker pigments. Pigment concentrations can also vary as a result of environmental conditions (light, nutrients, etc.). In addition, small cryptic species with similar pigment profiles as broader groupings are often not separated and are included in the biomass of the most similar grouping. Furthermore, endosymbiosis can result in mixotrophic grazers displaying pigment profiles of their endosymbiont (i.e. cryptophyte pigments within the ciliate Mesodinium rubrum). These issues can result in misclassifications or error when using chemotaxonomic and other pigment based methods. Strong knowledge of expected phytoplankton species is required prior to analysis and outputs are meant to represent broad trends in phytoplankton species composition.
attribute	NC_GLOBAL	contributor_name	String	Del Bel Belluz, Justin;Jordison, Drew;Evans, Wiley;Hakai Institute;Tula Foundation
attribute	NC_GLOBAL	contributor_role	String	custodian,author,editor,pointOfContact,principalInvestigator,originator;custodian,pointOfContact,contributor;custodian,principalInvestigator;publisher,owner,distributor;funder
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_city	String	Campbell River
attribute	NC_GLOBAL	creator_country	String	Canada
attribute	NC_GLOBAL	creator_institution	String	Hakai Institute
attribute	NC_GLOBAL	creator_name	String	Hakai Institute
attribute	NC_GLOBAL	creator_ror	String	https://ror.org/02pry0c91
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.hakai.org/
attribute	NC_GLOBAL	date_modified	String	2024-07-22T20:18:57.436Z
attribute	NC_GLOBAL	doi	String	https://doi.org/10.21966/bw2d-tg65
attribute	NC_GLOBAL	featureType	String	TimeSeriesProfile
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	history	String	Metadata record history: - additionalDocumentation: - authority: URL code: https://ntrs.nasa.gov/citations/20110008482 title: en: The Fourth SeaWiFS HPLC Analysis Round-Robin Experiment (SeaHARRE-4) fr: "La quatri\xE8me exp\xE9rience Round Robin d'analyse HPLC de SeaWiFS (SeaHarre-4)" translations: fr: message: "text translated using the Amazon translate service / texte traduit\ \ \xE0 l'aide du service de traduction Amazon" verified: false scope: Dataset statement: en: Explanation of HPLC USC analysis method and comparison with other methods fr: "Explication de la m\xE9thode d'analyse HPLC USC et comparaison avec d'autres\ \ m\xE9thodes" translations: fr: message: "text translated using the Amazon translate service / texte traduit\ \ \xE0 l'aide du service de traduction Amazon" verified: false
attribute	NC_GLOBAL	id	String	7fd3ec6c-083a-4942-84b4-215e69492072
attribute	NC_GLOBAL	infoUrl	String	https://catalogue.hakai.org/dataset/ca-cioos_7fd3ec6c-083a-4942-84b4-215e69492072
attribute	NC_GLOBAL	institution	String	Hakai Institute
attribute	NC_GLOBAL	keywords	String	abundance and biomass, British Columbia, Canada, chlorophyll a, CIOOS:phytoplanktonBiomassAndDiversity, climate change, coastal zone, hplc, phytoplankton
attribute	NC_GLOBAL	keywords_vocabulary	String	CIOOS: CIOOS Essential Ocean Variables Vocabulary
attribute	NC_GLOBAL	license	String	https://creativecommons.org/licenses/by/4.0
attribute	NC_GLOBAL	metadata_form	String	https://hakaiinstitute.github.io/hakai-metadata-entry-form#/en/hakai/7U7b8oPpeTN6gjvXlUCTGJr5pga2/-O25qzW3OpioeACGpRHl
attribute	NC_GLOBAL	metadata_link	String	https://catalogue.hakai.org/dataset/ca-cioos_7fd3ec6c-083a-4942-84b4-215e69492072
attribute	NC_GLOBAL	naming_authority	String	ca.cioos
attribute	NC_GLOBAL	product_version	String	1.0
attribute	NC_GLOBAL	progress	String	onGoing
attribute	NC_GLOBAL	project	String	Oceanography
attribute	NC_GLOBAL	publisher_city	String	Campbell River
attribute	NC_GLOBAL	publisher_country	String	Canada
attribute	NC_GLOBAL	publisher_institution	String	Hakai Institute
attribute	NC_GLOBAL	publisher_name	String	Hakai Institute
attribute	NC_GLOBAL	publisher_ror	String	https://ror.org/02pry0c91
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	publisher_url	String	https://www.hakai.org/
attribute	NC_GLOBAL	sourceUrl	String	(source database)
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v70
attribute	NC_GLOBAL	subsetVariables	String	project,work_area,survey,site_id,source
attribute	NC_GLOBAL	summary	String	High performance liquid chromatography (HPLC) is a method that quantifies concentrations of phytoplankton pigments from bulk water samples. Phytoplankton species groupings (i.e. diatoms, dinoflagellates, etc.) typically contain different pigments, and concentrations of pigments, used for photosynthesis. These differences make it possible to use statistical methods (e.g. chemotaxonomic analysis, CHEMTAX) to estimate phytoplankton group-level biomass contributions within a bulk water sample. These methods provide unique and valuable insight into phytoplankton community dynamics as they quantify the full phytoplankton size-spectrum, are relatively fast and cost-effective and, are directly relatable to remote sensing (i.e. pigments drive differences in light measured by satellites). Furthermore, HPLC is considered the gold-standard for quantifying phytoplankton total chlorophyll a concentrations (TChla, proxy for bulk phytoplankton biomass) required for satellite remote sensing validation. The Hakai institute has been collecting HPLC samples in the Northern Salish Sea (NSS) at the QU39 long-term ecological research station (LTER) and at various stations on the central coast of British Columbia since 2015. These data are used to monitor phytoplankton group level dynamics, build knowledge of different environmental conditions driving their variability (Del Bel Belluz et al., 2021), investigate linkages to the food web and carbonate system, evaluate long-term change and, to build regional remote sensing models (Vishnu et al., 2022). Data from station QU39 within the NSS are collected weekly and from 2015 -2019 at 5m depth and afterwards at 0, 5 , 10 and 20m depth. On the central coast of British Columbia, data are collected monthly at 5m depth. Samples are analyzed at the University of South Carolina Baruch Institute for Marine and Coastal Sciences using the USC method. This method was evaluated and is detailed in the NASA Fourth SeaWiFS HPLC Analysis Round-Robin Experiment (SeaHARRE-4, Hooker et al., 2010). Phytoplankton form the base of marine food webs and play key roles in biogeochemical cycling and carbon sequestration. The high turnover rates of phytoplankton species make them ideal sentinels of environmental change as they quickly respond to perturbations; however, a paucity of data, notably in terms of community composition, exists across coastal systems hindering the derivation of baseline conditions to assess change. This knowledge gap is especially pertinent when considering that coastal regions are experiencing rapid climate-driven change including increased temperature and acidification, reduced oxygen and altered freshwater dynamics. The synergy of these influences has the potential to alter phytoplankton community and size structure having large downstream implications on ecosystem resiliency, food production and climate regulation.
attribute	NC_GLOBAL	title	String	High performance liquid chromatography phytoplankton pigment timeseries for the northern Salish Sea and central coast, British Columbia
variable	project		String
attribute	project	long_name	String	Project
variable	work_area		String
attribute	work_area	long_name	String	Work Area
variable	survey		String
attribute	survey	long_name	String	Survey
variable	site_id		String
attribute	site_id	cf_role	String	timeseries_id
attribute	site_id	long_name	String	Site Id
variable	latitude		float
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	axis	String	Y
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		float
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	axis	String	X
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	source		String
attribute	source	long_name	String	Source
variable	project_specific_id		String
attribute	project_specific_id	long_name	String	Project Specific Id
variable	hakai_id		String
attribute	hakai_id	long_name	String	Hakai Id
variable	line_out_depth		double
attribute	line_out_depth	long_name	String	Line Out Depth
attribute	line_out_depth	units	String	m
variable	pressure_transducer_depth		double
attribute	pressure_transducer_depth	long_name	String	Pressure Transducer Depth
attribute	pressure_transducer_depth	units	String	m
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	axis	String	Z
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	positive	String	down
attribute	depth	source	String	pressure_transducer_depth if available otherse line_out_depth
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	axis	String	T
attribute	time	cf_role	String	profile_id
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Collected
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	preserved		double
attribute	preserved	ioos_category	String	Time
attribute	preserved	long_name	String	Preserved
attribute	preserved	standard_name	String	time
attribute	preserved	time_origin	String	01-JAN-1970 00:00:00
attribute	preserved	units	String	seconds since 1970-01-01T00:00:00Z
variable	analyzed		double
attribute	analyzed	ioos_category	String	Time
attribute	analyzed	long_name	String	Analyzed
attribute	analyzed	standard_name	String	time
attribute	analyzed	time_origin	String	01-JAN-1970 00:00:00
attribute	analyzed	units	String	seconds since 1970-01-01T00:00:00Z
variable	acidified		byte
attribute	acidified	long_name	String	Acidified
variable	volume		double
attribute	volume	long_name	String	Volume
attribute	volume	units	String	ml
variable	lab_technician		String
attribute	lab_technician	long_name	String	Lab Technician
variable	filter_portion		double
attribute	filter_portion	long_name	String	Filter Portion
variable	pre_weight_mg		double
attribute	pre_weight_mg	long_name	String	Pre Weight
attribute	pre_weight_mg	units	String	mg
variable	post_weight_mg		double
attribute	post_weight_mg	long_name	String	Post Weight
attribute	post_weight_mg	units	String	mg
variable	filter_size_mm		double
attribute	filter_size_mm	long_name	String	Filter Size
attribute	filter_size_mm	units	String	mm
variable	filter_type		String
attribute	filter_type	long_name	String	Filter Type
variable	extraction_duration		String
attribute	extraction_duration	long_name	String	Extraction Duration
attribute	extraction_duration	units	String	minutes
variable	extraction_method		String
attribute	extraction_method	long_name	String	Extraction Method
variable	initial_extraction_volume		double
attribute	initial_extraction_volume	long_name	String	Initial Extraction Volume
attribute	initial_extraction_volume	units	String	ml
variable	volume_filtered_ml		double
attribute	volume_filtered_ml	long_name	String	Volume Filtered Ml
attribute	volume_filtered_ml	units	String	ml
variable	final_extraction_volume		double
attribute	final_extraction_volume	long_name	String	Final Extraction Volume
attribute	final_extraction_volume	units	String	ml
variable	tac_peak		double
attribute	tac_peak	long_name	String	Tac Peak
variable	a_19_but		double
attribute	a_19_but	long_name	String	19 But
attribute	a_19_but	standard_name	String	mass_concentration_of_19_butanoyloxyfucoxanthin_in_sea_water
attribute	a_19_but	units	String	kg/m^3
variable	a_19_hex		double
attribute	a_19_hex	long_name	String	19 Hex
attribute	a_19_hex	standard_name	String	mass_concentration_of_19_hexanoyloxyfucoxanthin_in_sea_water
attribute	a_19_hex	units	String	kg/m^3
variable	alpha_carotene		double
attribute	alpha_carotene	long_name	String	Alpha Carotene
attribute	alpha_carotene	standard_name	String	mass_concentration_of_alpha_carotene_in_sea_water
attribute	alpha_carotene	units	String	kg/m^3
variable	alloxanthin		double
attribute	alloxanthin	long_name	String	Alloxanthin
attribute	alloxanthin	units	String	kg/m^3
variable	antheraxanthin		double
attribute	antheraxanthin	long_name	String	Antheraxanthin
attribute	antheraxanthin	units	String	kg/m^3
variable	beta_carotene		double
attribute	beta_carotene	long_name	String	Beta Carotene
attribute	beta_carotene	standard_name	String	mass_concentration_of_beta_carotene_in_sea_water
attribute	beta_carotene	units	String	kg/m^3
variable	c2mgdg		double
attribute	c2mgdg	long_name	String	C2MGDG
attribute	c2mgdg	units	String	kg/m^3
variable	chl_a		double
attribute	chl_a	long_name	String	Concentration Of Chlorophyll In Sea Water
attribute	chl_a	standard_name	String	concentration_of_chlorophyll_in_sea_water
variable	chl_b		double
attribute	chl_b	long_name	String	Chlorophyll-B
attribute	chl_b	standard_name	String	mass_concentration_of_chlorophyll_b_in_sea_water
attribute	chl_b	units	String	kg/m^3
variable	chl_c1		double
attribute	chl_c1	long_name	String	Chlorophyll-C1
variable	chl_c1_c2		double
attribute	chl_c1_c2	long_name	String	CHL C1 C2
attribute	chl_c1_c2	units	String	kg/m^3
variable	chl_c2		double
attribute	chl_c2	long_name	String	Chlorophyll-C2
attribute	chl_c2	units	String	kg/m^3
variable	chl_c3		double
attribute	chl_c3	long_name	String	Chlorophyll-C3
attribute	chl_c3	standard_name	String	mass_concentration_of_chlorophyll_c3_in_sea_water
attribute	chl_c3	units	String	kg/m^3
variable	chl_ide_a		double
attribute	chl_ide_a	long_name	String	Chl Ide A
attribute	chl_ide_a	units	String	kg/m^3
variable	chla_allomer		double
attribute	chla_allomer	long_name	String	Chlorophyll-A Allomer
attribute	chla_allomer	standard_name	String	concentration_of_chlorophyll_in_sea_water
attribute	chla_allomer	units	String	kg/m^3
variable	chla_prime		double
attribute	chla_prime	long_name	String	Chlorophyll-A prime
attribute	chla_prime	units	String	kg/m^3
variable	diadinoxanthin		double
attribute	diadinoxanthin	long_name	String	Diadinoxanthin
attribute	diadinoxanthin	standard_name	String	mass_concentration_of_diadinoxanthin_in_sea_water
attribute	diadinoxanthin	units	String	kg/m^3
variable	diatoxanthin		double
attribute	diatoxanthin	long_name	String	Diatoxanthin
attribute	diatoxanthin	units	String	kg/m^3
variable	dv_chl_a		double
attribute	dv_chl_a	long_name	String	DV Chlorophyll-A
attribute	dv_chl_a	units	String	kg/m^3
variable	fuco		double
attribute	fuco	long_name	String	Fuco
attribute	fuco	standard_name	String	mass_concentration_of_fucoxanthin_in_sea_water
attribute	fuco	units	String	kg/m^3
variable	gyroxanthin_diester		double
attribute	gyroxanthin_diester	long_name	String	Gyroxanthin Diester
attribute	gyroxanthin_diester	units	String	kg/m^3
variable	lutein		double
attribute	lutein	long_name	String	Lutein
attribute	lutein	standard_name	String	mass_concentration_of_lutein_in_sea_water
attribute	lutein	units	String	kg/m^3
variable	me_chlide		double
attribute	me_chlide	units	String	kg/m^3
variable	mgdvp		double
attribute	mgdvp	units	String	kg/m^3
variable	neoxanthin		double
attribute	neoxanthin	long_name	String	Neoxanthin
attribute	neoxanthin	units	String	kg/m^3
variable	peri		double
attribute	peri	long_name	String	Peri
attribute	peri	units	String	kg/m^3
variable	phbide		double
attribute	phbide	long_name	String	Phbide
attribute	phbide	units	String	kg/m^3
variable	phphyt		double
attribute	phphyt	long_name	String	PHPHYT
attribute	phphyt	units	String	kg/m^3
variable	prasinoxanthin		double
attribute	prasinoxanthin	long_name	String	Prasinoxanthin
attribute	prasinoxanthin	standard_name	String	mass_concentration_of_prasinoxanthin_in_sea_water
attribute	prasinoxanthin	units	String	kg/m^3
variable	violaxanthin		double
attribute	violaxanthin	long_name	String	Violaxanthin
attribute	violaxanthin	standard_name	String	mass_concentration_of_violaxanthin_in_sea_water
attribute	violaxanthin	units	String	kg/m^3
variable	zeaxanthin		double
attribute	zeaxanthin	long_name	String	Zeaxanthin
attribute	zeaxanthin	standard_name	String	mass_concentration_of_zeaxanthin_in_sea_water
attribute	zeaxanthin	units	String	kg/m^3
variable	total_chl_a		double
attribute	total_chl_a	long_name	String	Concentration Of Total Chlorophyll-A In Sea Water
attribute	total_chl_a	units	String	kg/m^3
variable	all_chl_a		double
attribute	all_chl_a	long_name	String	Concentration Of All Chlorophyll-A In Sea Water
attribute	all_chl_a	units	String	kg/m^3
variable	all_chl_a_flag		String
attribute	all_chl_a_flag	long_name	String	All Chl A Flag
variable	analyzing_lab		String
attribute	analyzing_lab	long_name	String	Analyzing Lab
variable	row_flag		String
attribute	row_flag	long_name	String	Row Flag
variable	quality_level		String
attribute	quality_level	long_name	String	Quality Level
variable	comments		String
attribute	comments	long_name	String	Comments
variable	quality_log		String
attribute	quality_log	long_name	String	Quality Log

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.