Dataset: Dongsha Atoll Coral Calcification Rates
Deployment: Cohen_2013-15

Annual calcification rate time series of Porites corals on Dongsha Atoll

Principal Investigator:

Anne L. Cohen (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Can Coral Reefs in the Central Pacific Survive Ocean Warming? A 2015 El Nino Test (Coral Reef Resilience)

Current State:

Final no updates expected

Version:

19 April 2017

Version Date:

2017-04-19

Data URL:

https://www.bco-dmo.org/dataset-deployment/687946/data

Expand/Collapse All

Description

Annual calcification rate time series of Porites corals on Dongsha Atoll (20.8 N 116.7 E).

Related publications:
DeCarlo T.M., Cohen A.L., Wong G.T.F., Davis K.A., Lohmann P., & K. Soong (2017). Mass coral mortality under local amplification of 2 °C ocean warming. Scientific Reports 7, 44586. doi:10.1038/srep44586

Methods & Sampling

Dataset acquisition description

Coral skeletal cores were collected from massive Porites colonies using underwater pneumatic drills with 3 cm diameter drill bits. The cores were scanned at Woods Hole Oceanographic Institution Computerized Scanning and Imaging Facility and skeletal density was calculated by comparison to previously calibrated coral skeletal density standards .

Data Processing Description

Dataset Processing Description

Annual calcification rates were calculated using the software program coralCT and the mean calcification rate was calculated for 2007-2012, the years that are overlapping among all colonies. Stress bands were identified visually from coral CT scans.

Reference:
DeCarlo T.M. and Cohen A.L. (2016) coralCT: software tool to analyze computerized tomography (CT) scans of coral skeletal cores for calcification and bioerosion rates. Zenodo. https://zenodo.org/record/57855 doi:10.5281/zenodo.57855

BCO-DMO Processing:
- transposed data so sample data are in columns;
- replaced commas with semi-colons; added underscores (in stress_bands column);
- added location name and lat/lon from metadata file.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1605365	NSF Division of Ocean Sciences

Instruments

Manual Biota Sampler

Supplied Name: underwater pneumatic drills

Supplied Description:

Coral skeletal cores were collected from massive Porites colonies using underwater pneumatic drills with 3 cm diameter drill bits.

Instrument Type

Generic Name: Manual Biota Sampler

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/90/

Generic Description:

"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. This term could also refer to a simple tool like a hammer, saw, or other hand-held tool.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
location	Name of area of study	unitless	site
lat	Latitude of study site	decimal degrees	lat
lon	Longitude of study site	decimal degrees	lon
core_id	Identification number of coral core	unitless	sample
status_July_2015	Status of colony in July 2015: "bleached" / "dead" / "alive, pigmented"	unitless	sample_descrip
stress_bands	Years with identified stress bands	unitless	sample_descrip
year	4-digit calendar year for which calcification rate was determined	unitless	year
calcification_rate	Annual calcification rate	grams per centimeter per year (g cm-2 yr-1)	calcification

Database

Contribute Data

Dataset: Dongsha Atoll Coral Calcification Rates
Deployment: Cohen_2013-15

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Dongsha Atoll Coral Calcification RatesDeployment: Cohen_2013-15

Dataset acquisition description

Dataset Processing Description

Dataset: Dongsha Atoll Coral Calcification Rates
Deployment: Cohen_2013-15