bcodmo_dataset_923859_v1

Name: [The influence of reactive oxygen species on "‘respiration" isotope effect] - The influence of reactive oxygen species on "‘respiration" isotope effect (Clumped Oxygen Isotope Signature of Marine Dissolved Oxygen)
Creator: BCO-DMO
License: 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.

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	[The influence of reactive oxygen species on "‘respiration" isotope effect] - The influence of reactive oxygen species on "‘respiration" isotope effect (Clumped Oxygen Isotope Signature of Marine Dissolved Oxygen)		M	background			BCO-DMO	bcodmo_dataset_923859_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.923859.1
attribute	NC_GLOBAL	infoUrl	String	https://osprey.bco-dmo.org/dataset/923859
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 triple-oxygen isotope (17O/16O, 18O/16O) measurement of oxygen-bearing species represents one of the most robust tools to directly trace oxygen cycling in the environment. One particularly consequential application of this isotope system is the analysis of dissolved oxygen (O2) in aquatic environments to determine gross oxygen production. This approach assumes that photosynthesis, microbial respiration, and gas exchange are the main drivers of dissolved O2 isotope compositions, and that each process is described by predictable, consistent triple-oxygen isotope effects. However, there currently exists a large disagreement in the literature on the triple-oxygen isotope effect of respiration, which carries major implications for global primary productivity estimates. Recent work has additionally highlighted the ubiquitous production of extracellular reactive oxygen species (ROS) such as superoxide and hydrogen peroxide by microorganisms; this flux maybe responsible for as much as 20% of net oxygen utilization in the ocean. To examine the influence of ROS-mediated O2 recycling on the oxygen utilization isotope effect, we measured the triple-oxygen isotope fractionations and mass laws of superoxide dismutase, catalase, and iron-mediated H2O2 degradation. We incorporate these constraints into an oxygen isotope flux model to explore the influence of ROS-mediated oxygen cycling on "respiration" isotope effects in previous studies. We find that ROS-mediated oxygen cycling can reconcile the previously reported range of triple-oxygen isotope fractionation factors and that typical marine isotope effects are broadly consistent with independent estimates of superoxide-mediated oxygen loss. These data are described further in the related publication, Sutherland et al., 2022 (doi: 10.1016/j.gca.2022.02.033).
attribute	NC_GLOBAL	title	String	[The influence of reactive oxygen species on "‘respiration" isotope effect] - The influence of reactive oxygen species on "‘respiration" isotope effect (Clumped Oxygen Isotope Signature of Marine Dissolved Oxygen)
variable	Sample		String
attribute	Sample	long_name	String	Sample
attribute	Sample	units	String	unitless
variable	n		int
attribute	n	actual_range	int	1, 3
attribute	n	long_name	String	N
attribute	n	units	String	unitless
variable	d18O_smowslap		float
attribute	d18O_smowslap	actual_range	float	5.269, 23.306
attribute	d18O_smowslap	long_name	String	D18o_smowslap
attribute	d18O_smowslap	units	String	permil
variable	D17O		float
attribute	D17O	actual_range	float	-0.503, -0.347
attribute	D17O	long_name	String	D17o
attribute	D17O	units	String	permil
variable	d17O_smowslap_log		float
attribute	d17O_smowslap_log	actual_range	float	2.35, 11.865
attribute	d17O_smowslap_log	long_name	String	D17o_smowslap_log
attribute	d17O_smowslap_log	units	String	unitless
variable	d18O_smowslap_log		float
attribute	d18O_smowslap_log	actual_range	float	5.255, 23.038
attribute	d18O_smowslap_log	long_name	String	D18o_smowslap_log
attribute	d18O_smowslap_log	units	String	unitless

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.