Dataset: coral skeletal growth
Deployment: Palau_reefs_2011-13

Coral extension, density, calcification, and bioerosion from corals collected at Palau.

Principal Investigator:

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

Co-Principal Investigator:

Kristopher Karnauskas (Woods Hole Oceanographic Institution, WHOI)

Contact:

Hannah Barkley (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

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

Project:

Constraining Thermal Thresholds and Projections of Temperature Stress on Pacific Coral Reefs Over the 21st Century: Method Refinement and Application (Thermal Thresholds and Projections)

Toward Predicting the Impact of Ocean Acidification on Net Calcification by a Broad Range of Coral Reef Ecosystems: Identifying Patterns and Underlying Causes (Coral Reef Ecosystem OA Impact)

Current State:

Final no updates expected

Version:

25 June 2015

Version Date:

2015-06-25

Data URL:

https://www.bco-dmo.org/dataset-deployment/561067/data

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Description

Porites and Favia coral extension, density, calcification, and bioerosion from corals collected at 8 sites Palau.

Primary reference:
Barkley, H.C., A.L. Cohen, Y. Golbuu, V.R. Starczak, T.M. DeCarlo, K.E.F. Shamberger. 2015. Changes in coral reef communities across a natural gradient in seawater pH. Science Advances, 1, e1500328. doi:10.1126/sciadv.1500328

Other related references:
DeCarlo, T.M., A.L. Cohen, H.C. Barkley, Q. Cobban, C. Young, C., K.E.F. Shamberger, R.E. Brainard, Y. Golbuu. 2015. Coral macrobioerosion is accelerated by ocean acidification and nutrients. Geology, 43, 7-10. doi:10.1130/G36147.1

Shamberger, K.E.F., A.L. Cohen, Y. Golbuu, D.C. McCorkle, S.J. Lentz, H.C. Barkley. 2014. Diverse coral communities in naturally acidified waters of a Western Pacific Reef. Geophysical Research Letters, 41. DOI: 10.1002/2013GL058489.

Methods & Sampling

Dataset acquisition description

Coral skeletal cores were collected at eight sites from massive Porites and Favia corals at 1-5m depth using underwater pneumatic drills. Core holes were plugged with cement and sealed with marine epoxy, and corals were able to fully grow over the plugs within a year. The skeletal cores were oven dried and CT (computerized tomography) scanned at Woods Hole Oceanographic Institution.

Data Processing Description

Dataset Processing Description

Coral cores were scanned using a Siemens Volume Zoom Helical Computerized Tomography (CT) Scanner, and extension, density, and calcification rates were calculated using annual banding patterns visualized from 3-D CT images in MATLAB (detailed procedure for analyzing coral growth rates in DeCarlo et al. (2015)). The 2006-2010 averages of these parameters for each coral were used to compare growth rates across reef sites. CT scan images were used to determine the proportion of the skeleton eroded (>1mm boring diameter) by boring organisms (including bivalves, worms, and sponges), calculated as the total volume of CaCO3 removed relative to the total volume of the coral core, for each Porites coral.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1031971	NSF Division of Ocean Sciences
OCE-1220529	NSF Division of Ocean Sciences

Instruments

None available yet

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
site_name	Sampling site name.	dimensionless	site
lat	Latitude of sampling location. North = positive values.	decimal degrees	lat
lon	Longitude of sampling location. East = positive values.	decimal degrees	lon
omega_Ar	Saturation state of seawater with respect to aragonite.	dimensionless	no_bcodmo_term
omega_Ar_err	Standard error of omega_Ar.	dimensionless	no_bcodmo_term
porites_ext	Average Porites extension rate.	centimeters per year (cm/yr)	no_bcodmo_term
porites_ext_err	Standard error of Porites extension rate.	centimeters per year (cm/yr)	no_bcodmo_term
porites_dens	Average Porites density.	grams per cubic centimeter (g cm-3)	no_bcodmo_term
porites_dens_err	Standard error of Porites density.	grams per cubic centimeter (g cm-3)	no_bcodmo_term
porites_calc	Average Porites calcification.	grams per square centimeter per year (g cm-2 yr-1)	no_bcodmo_term
porites_calc_err	Standard error of Porites calcification.	grams per square centimeter per year (g cm-2 yr-1)	no_bcodmo_term
favia_ext	Average Favia extension rate.	centimeters per year (cm/yr)	no_bcodmo_term
favia_ext_err	Standard error of Favia extension rate.	centimeters per year (cm/yr)	no_bcodmo_term
favia_dens	Average Favia density.	grams per cubic centimeter (g cm-3)	no_bcodmo_term
favia_dens_err	Standard error of Favia density	grams per cubic centimeter (g cm-3)	no_bcodmo_term
favia_calc	Average Favia calcification rate.	grams per square centimeter per year (g cm-2 yr-1)	no_bcodmo_term
favia_calc_err	Standard error of Favia calcification rate.	grams per square centimeter per year (g cm-2 yr-1)	no_bcodmo_term
porites_boring_vol	Average Porites percent volume bioeroded.	percent (%)	no_bcodmo_term
porites_boring_vol_err	Standard error of Porites percent volume bioeroded.	percent (%)	no_bcodmo_term

Database

Contribute Data

Dataset: coral skeletal growth
Deployment: Palau_reefs_2011-13

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: coral skeletal growthDeployment: Palau_reefs_2011-13

Dataset acquisition description

Dataset Processing Description

Dataset: coral skeletal growth
Deployment: Palau_reefs_2011-13