ERDDAP > info > bcodmo_dataset_705851

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	[Reciprocal transplants] - Data from reciprocal transplant experiments conducted on Porites coral collected on Palau in December 2012 (Toward Predicting the Impact of Ocean Acidification on Net Calcification by a Broad Range of Coral Reef Ecosystems: Identifying Patterns and Underlying Causes)		I   M	background			BCO-DMO	bcodmo_dataset_705851

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
attribute	NC_GLOBAL	acquisition_description	String	Methods reprinted from Barkley et al. 2017: Coral collection:\u00a0Coral plugs were collected in December 2012 from massive Porites colonies at a naturally low-\u03a9ar reef site (7.324 N, 134.493 E; mean \u03a9ar = 2.3; n = 78) and a naturally high-\u03a9ar reef site (7.268 N, 134.522 E; mean \u03a9ar = 3.7; n = 75). At each reef site, small skeletal cores (diameter = 3.5 cm) were removed from massive colonies (one core per colony) at 2-3m depth using underwater pneumatic drills, and cores were cut with a lapidary table saw to approximately 1 cm below the tissue layer. The plugs were affixed to nylon square base screws with marine epoxy, secured to egg crate racks, and returned to their original reefs to allow the corals to recover from the coring procedure. All corals survived two months of recovery on the reef and on all corals living tissue had fully overgrown the sides of the plugs so that no underlying skeleton was exposed. Corals were recovered in February 2013. Reciprocal transplant experiment:\u00a0The reciprocal transplant experiment was conducted concurrently with the CO2 manipulation experiment. Initial buoyant weight measurements were obtained for all corals prior to transplantation. Of the corals collected from the low-\u03a9ar reef and from the high-\u03a9ar reef (n = 44 for each reef), approximately half of the corals in each group was returned to their reef of origin (low-\u03a9ar to low-\u03a9ar: n = 23, high-\u03a9ar to high-\u03a9ar: n = 21), while the remaining corals were transplanted to the opposite reef (low-\u03a9ar to high-\u03a9ar: n = 21, high-\u03a9ar to low-\u03a9ar: n = 23). All corals were transplanted to the same depth (5m). In May 2013, after eight weeks in the field (and at the end of the CO2 manipulation experiment), approximately half of the corals from each reef (n = 10-12 per transplant group) were recovered and weighed. The remaining corals were left out on the two reefs for 17 months (n = 10-11 per group). In August 2014, these corals were recovered from the reef.\u00a0Corals were evaluated for partial or total mortality, and were judged to be alive (no visible tissue death observed), partially dead (visible tissue death and/or tissue recession but some living tissue remaining), or dead (no living tissue remaining). Buoyant weights were collected for all corals to determine overall calcification rates during the reciprocal transplant period. Because coral tissue is assumed to be neutrally buoyant (i.e. it does not contribute to buoyant weight measurements) and the timing of tissue death during the 17-month transplant was unknown, the overall change in skeletal mass was calculated and reported for all corals regardless of mortality status.
attribute	NC_GLOBAL	awards_0_award_nid	String	520400
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1220529
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1220529
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	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Reciprocal transplant experiments on Palau Porites coral PI: Anne Cohen (WHOI) Contact: Hannah Barkley (WHOI) Version: 23 June 2017
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	2017-06-23T18:48:39Z
attribute	NC_GLOBAL	date_modified	String	2019-08-02T18:45:30Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.705851.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/705851
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Manual Biota Sampler
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	At each reef site, small skeletal cores (diameter = 3.5 cm) were removed from massive colonies (one core per colony) at 2–3mdepth using underwater pneumatic drills.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	705855
attribute	NC_GLOBAL	instruments_0_description	String	Manual Biota Sampler indicates that a sample was collected in situ by a person, possibly using a hand-held collection device such as a jar, a net or their hands.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/90/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Manual Biota Sampler
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	565
attribute	NC_GLOBAL	instruments_0_supplied_name	String	pneumatic drill
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, calc, calc_rate, chemical, code, coral, coral_id, data, dataset, dmo, duration, erddap, management, oceanography, office, omega, original, original_omegaAR, preliminary, rate, status, transplant, transplant_duration, transplant_omegaAR, treatment, treatment_code
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/705851/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/705851
attribute	NC_GLOBAL	param_mapping	String	{'705851': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/705851/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_0_person_name	String	Anne L Cohen
attribute	NC_GLOBAL	people_0_person_nid	String	51428
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	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_1_person_name	String	Hannah Barkley
attribute	NC_GLOBAL	people_1_person_nid	String	560803
attribute	NC_GLOBAL	people_1_role	String	Contact
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	people_2_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_2_person_name	String	Shannon Rauch
attribute	NC_GLOBAL	people_2_person_nid	String	51498
attribute	NC_GLOBAL	people_2_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	project	String	Coral Reef Ecosystem OA Impact
attribute	NC_GLOBAL	projects_0_acronym	String	Coral Reef Ecosystem OA Impact
attribute	NC_GLOBAL	projects_0_description	String	text copied from the NSF award abstract: Much of our understanding of the impact of ocean acidification on coral reef calcification comes from laboratory manipulation experiments in which reef organisms are removed from their natural habitat and reared under conditions of calcium carbonate saturation (Omega) predicted for the tropical oceans at the end of this century. By comparison, there is a paucity of in situ data describing the sensitivity of coral reef ecosystems to changes in calcium carbonate saturation. Yet emerging evidence suggests there may be critical differences between the calcification response of organisms in culture and the net calcification response of a coral reef ecosystem, to the same degree of change in calcium carbonate saturation. In the majority of cases, the sensitivity of net reef calcification to changing calcium carbonate saturation is more severe than laboratory manipulation experiments predict. Clearly, accurate predictions of the response of coral reef ecosystems to 21st century ocean acidification will depend on a robust characterization of ecosystem-scale responses and an understanding of the fundamental processes that shape them. Using existing data, the investigators show that the sensitivity of coral reef ecosystem calcification to Delta calcium carbonate saturation conforms to the empirical rate equation R=k(Aragonite saturation state -1)n, which also describes the relationship between the rate of net abiogenic CaCO3 precipitation (R) and the degree of Aragonite supersaturation (Aragonite saturation state-1). By implication, the net ecosystem calcification (NEC) response to ocean acidification is governed by fundamental laws of physical chemistry and is potentially predictable across space and time. When viewed this way, the existing, albeit sparse, dataset of NEC reveals distinct patterns that, if verified, have important implications for how different coral reef ecosystems will respond to 21st century ocean acidification. The investigators have outlined a research program designed to build on this proposition. The project expands the currently sparse dataset of ecosystem-scale observations at four strategically placed reef sites: 2 sites in the Republic of Palau, Caroline Islands, Micronesia, western Pacific Ocean; a third at Dongsha Atoll, Pratas Islands, South China Sea; and the fourth at Kingman Reef, US Northern Line Islands, 6 deg. 23 N, 162 deg. 25 W.  The four selected sites will allow investigators to test the following hypotheses: (1) The sensitivity ("n" in the rate equation) of coral reef ecosystem calcification to Delta Aragonite saturation state decreases with decreasing Aragonite saturation state. By implication, the rate at which reef calcification declines will slow as ocean acidification progresses over the course of this century. (2) The energetic status of the calcifying community is a key determinant of absolute rates of net ecosystem calcification ("k" in the rate equation), which, combined with n, defines the Aragonite saturation state value at which NEC approaches zero. By implication, the shift from net calcification to net dissolution will be delayed in healthy, energetically replete coral reef ecosystems and accelerated in perturbed, energetically depleted ecosystems. and (3) The calcification response of individual colonies of dominant reef calcifiers (corals and algae) is weaker than the measured ecosystem-scale response to the same change in Aragonite saturation state. By implication, processes not adequately captured in laboratory experiments, such as bioerosion and dissolution, will play an important role in the coral reef response to ocean acidification. Broader Impacts: Ocean acidification threatens the livelihoods of 500 million people worldwide who depend on coral reefs to provide habitable and agricultural land, food, building materials, coastal protection and income from tourism. Yet data emerging from ocean acidification (OA) studies point to critical gaps in our knowledge of reef ecosystem-scale responses to OA that currently limit our ability to predict the timing and severity of its impact on different reefs in different parts of the world. Using existing data generated by the investigators and others, this project will address a series of related hypotheses, which, if verified by the research, will have an immediate, direct impact on predictions of coral reef resilience in a high CO2 world. This project brings together expertise in coral reef biogeochemistry, chemical oceanography and physical oceanography to focus on a problem that has enormous societal, economic and conservation relevance. In addition to sharing the resultant data via BCO-DMO, project data will also be contributed to the Ocean Acidification International Coordination Centre (OA-ICC) data collection hosted at the PANGAEA Open Access library (http://www.pangaea.de).
attribute	NC_GLOBAL	projects_0_end_date	String	2015-08
attribute	NC_GLOBAL	projects_0_geolocation	String	Republic of Palau, Caroline Islands, Micronesia, western Pacific Ocean; Dongsha Atoll, Pratas Islands, South China Sea; Kingman Reef, US Northern Line Islands, 6 deg. 23 N, 162 deg. 25 W
attribute	NC_GLOBAL	projects_0_name	String	Toward Predicting the Impact of Ocean Acidification on Net Calcification by a Broad Range of Coral Reef Ecosystems: Identifying Patterns and Underlying Causes
attribute	NC_GLOBAL	projects_0_project_nid	String	520413
attribute	NC_GLOBAL	projects_0_start_date	String	2012-09
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	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Data from reciprocal transplant experiments conducted on Porites coral collected on Palau in December 2012.
attribute	NC_GLOBAL	title	String	[Reciprocal transplants] - Data from reciprocal transplant experiments conducted on Porites coral collected on Palau in December 2012 (Toward Predicting the Impact of Ocean Acidification on Net Calcification by a Broad Range of Coral Reef Ecosystems: Identifying Patterns and Underlying Causes)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	coral_id		String
attribute	coral_id	bcodmo_name	String	sample
attribute	coral_id	description	String	Unique identification number for each transplanted coral
attribute	coral_id	long_name	String	Coral Id
attribute	coral_id	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	coral_id	units	String	unitless
variable	transplant_duration		byte
attribute	transplant_duration	_FillValue	byte	127
attribute	transplant_duration	actual_range	byte	2, 17
attribute	transplant_duration	bcodmo_name	String	duration
attribute	transplant_duration	description	String	Length of transplant experiment (2 or 17 months)
attribute	transplant_duration	long_name	String	Transplant Duration
attribute	transplant_duration	units	String	months
variable	original_omegaAR		float
attribute	original_omegaAR	_FillValue	float	NaN
attribute	original_omegaAR	actual_range	float	2.3, 3.7
attribute	original_omegaAR	bcodmo_name	String	OM_ar
attribute	original_omegaAR	description	String	Aragonite saturation state of reef where coral was collected
attribute	original_omegaAR	long_name	String	Original Omega AR
attribute	original_omegaAR	units	String	unitless
variable	transplant_omegaAR		float
attribute	transplant_omegaAR	_FillValue	float	NaN
attribute	transplant_omegaAR	actual_range	float	2.3, 3.7
attribute	transplant_omegaAR	bcodmo_name	String	OM_ar
attribute	transplant_omegaAR	description	String	Aragonite saturation state of reef where coral was transplanted
attribute	transplant_omegaAR	long_name	String	Transplant Omega AR
attribute	transplant_omegaAR	units	String	unitless
variable	treatment_code		String
attribute	treatment_code	bcodmo_name	String	treatment
attribute	treatment_code	description	String	Indicates return to reef of origin (O) or transplanted to opposite reef (T)
attribute	treatment_code	long_name	String	Treatment Code
attribute	treatment_code	units	String	unitless
variable	calc_rate		float
attribute	calc_rate	_FillValue	float	NaN
attribute	calc_rate	actual_range	float	-24.82, 47.67
attribute	calc_rate	bcodmo_name	String	calcification
attribute	calc_rate	description	String	Calcification rate of corals measured by buoyant weight
attribute	calc_rate	long_name	String	Calc Rate
attribute	calc_rate	units	String	milligrams per square centimeter per month (mg/cm2/month)
variable	status		String
attribute	status	bcodmo_name	String	sample_descrip
attribute	status	description	String	Health status of corals at end of transplant experiment (live, partially dead, or dead)
attribute	status	long_name	String	Status
attribute	status	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.