ERDDAP > info > bcodmo_dataset_995690_v1

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
		data	graph		files	public	[Bivalve Boron Isotopes] - Boron isotope data from bivalves from 2022 tank experiment in the Gulf of Maine, USA (Collaborative Research: Using multi-proxy paleo data to constrain natural and anthropogenic hydrographic variability in the Gulf of Maine System over the last 250 years)		M	background			BCO-DMO	bcodmo_dataset_995690_v1

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	cdm_data_type	String	Other
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_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.995690.1
attribute	NC_GLOBAL	infoUrl	String	https://osprey.bco-dmo.org/dataset/995690
attribute	NC_GLOBAL	institution	String	BCO-DMO
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	sourceUrl	String	(local files)
attribute	NC_GLOBAL	summary	String	The boron isotopic composition (δ11Bc) of many marine carbonates provides insight into the pH at the site of calcification within biocalcifiers and, by extension, the pH of ambient seawater when the carbonate formed. A 20.5-week flowthrough tank experiment was conducted in which four species of commercially important bivalves from the northwest Atlantic Ocean were grown in tanks with controlled pHT (pH 7.4 to 8.0) and temperature conditions (6 to 12 °C). A total of 106 shell samples from 99 individuals of adult and juvenile Arctica islandica (ocean quahog), juvenile Mercenaria mercenaria (northern quahog or hard clam), juvenile Mya arenaria (soft-shell clam), and juvenile Placopecten magellanicus (Atlantic sea scallop) were analyzed from this controlled experiment to assess the seawater pH, temperature, and growth rate controls on shell δ11Bc. Juvenile P. magellanicus and juvenile M. mercenaria demonstrated significant relationships (R≥0.60; p-value <0.006) between tank pHT and δ11Bc, suggesting potential utility as proxies for past ambient seawater pH. Conversely, the δ11Bc of juvenile A. islandica and juvenile M. arenaria did not yield a strong relationship with seawater pHT but instead yielded significant relationships with shell growth rate (linear extension), with a positive relationship for M. arenaria and a negative relationship for juvenile A. islandica. The δ11B results from the few (n=9) adult A. islandica shells measured show the most variability across the range of pH and temperatures (range of 16‰), and no significant relationship was found with seawater pH or growth rate. Despite rigorous oxidative cleaning of samples, the data suggest that adult A. islandica shells contain boron-rich organic phases resistant to traditional cleaning techniques. The data on this site (summary file) include the average temperature, pH, and salinity used for the boron isotope analysis, in addition to the δ11B of the borate in water calculations, δ11B measured in the shells, the B/Ca ratio measured in the shells, and the delta pH values calculated using the above values. Additional data include (temperature file) all temperature measurements from the tank experiment (every minute measurements) and daily averages. pH (pH file) and salinity (salinity file) data from weekly measurements are included. Data needed to perform the delta pH calculations are included (delta pH file). The specimens grown in each tank that were used for boron isotope measurements are also included (boron specimens by tank file). This file specifies the number and species that were grown under the various tank conditions.
attribute	NC_GLOBAL	title	String	[Bivalve Boron Isotopes] - Boron isotope data from bivalves from 2022 tank experiment in the Gulf of Maine, USA (Collaborative Research: Using multi-proxy paleo data to constrain natural and anthropogenic hydrographic variability in the Gulf of Maine System over the last 250 years)
variable	SampleID		String
attribute	SampleID	long_name	String	Sampleid
attribute	SampleID	units	String	unitless
variable	Sample_species		String
attribute	Sample_species	long_name	String	Sample_species
attribute	Sample_species	units	String	unitless
variable	Sample_description		String
attribute	Sample_description	long_name	String	Sample_description
attribute	Sample_description	units	String	unitless
variable	Average_temperature		float
attribute	Average_temperature	actual_range	float	6.0, 12.2
attribute	Average_temperature	long_name	String	Average_temperature
attribute	Average_temperature	units	String	degrees Celsius
variable	Average_pHT		float
attribute	Average_pHT	actual_range	float	7.39, 8.05
attribute	Average_pHT	long_name	String	Average_pht
attribute	Average_pHT	units	String	pH units
variable	Average_salinity		float
attribute	Average_salinity	actual_range	float	31.96, 32.146
attribute	Average_salinity	long_name	String	Average_salinity
attribute	Average_salinity	units	String	psu
variable	boron_isotope_value_borate_ion		float
attribute	boron_isotope_value_borate_ion	actual_range	float	12.99, 15.83
attribute	boron_isotope_value_borate_ion	long_name	String	Boron_isotope_value_borate_ion
attribute	boron_isotope_value_borate_ion	units	String	per mil (‰, water)
variable	boron_isotope_value_shell		float
attribute	boron_isotope_value_shell	actual_range	float	2.5, 19.25
attribute	boron_isotope_value_shell	long_name	String	Boron_isotope_value_shell
attribute	boron_isotope_value_shell	units	String	per mil (‰)
variable	boron_calcium_ratio		int
attribute	boron_calcium_ratio	actual_range	int	16, 105
attribute	boron_calcium_ratio	long_name	String	Boron_calcium_ratio
attribute	boron_calcium_ratio	units	String	(umol/mol)
variable	delta_pH		float
attribute	delta_pH	actual_range	float	-2.279, 0.524
attribute	delta_pH	long_name	String	Delta_ph
attribute	delta_pH	units	String	pH units

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.