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

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

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.

Data Files

File
Dongsha_calcification.csv (Comma Separated Values (.csv), 69.29 KB) MD5:dc42d0a1da5803412e47ec04b1148931 Primary data file for dataset ID 687887

More Information about this dataset

Funding Sources

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

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Cohen_2013-15		2013-06-20	Dongsha_Atoll	Anne L. Cohen (Principal Investigator)	data info

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

Date and time formats are described in python strftime() syntax.

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