Dataset: LTVR - Vermetid Sizes in Quadrats
Deployment: Osenberg_et_al_Moorea

Sizes of Vermetids on Long Term Vermetid Removal Reefs

Principal Investigator:

Craig Osenberg (University of Georgia, UGA)

Co-Principal Investigator:

Thomas Frazer (University of Florida, UF)

International Collaborator:

Jeffrey Shima (Victoria University of Wellington)

Contact:

Craig Osenberg (University of Georgia, UGA)

BCO-DMO Data Manager:

Stephen R. Gegg (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Spatial patterns of coral-vermetid interactions: short-term effects and long-term consequences (Vermetids_Corals)

Current State:

Preliminary and in progress

Version:

23 May 2016

Version Date:

2016-05-23

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/645969/data

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Description

This dataset contains vermetid sizes and species identifications from quadrats on experimental reefs. These data were collected to examine spatial and temporal variation in vermetid abundances Moorea, French Polynesia.

Long Term Vermetid Removal (LTVR) Reef sites in this project are manipulated reefs characterized in the Long Term Reef Physical Characteristics dataset.

Reefs labeled "TOW" in this dataset, numbered 129-144, are a subset of a larger number of Long Term Reefs (LTR) that were monitored as part of the project "Cryptic density dependence: the effects of spatial, ontogenetic, and individual variation in reef fish" beginning in 2003. This long term study continues to monitor those reefs in addition to reefs 193-198 starting in 2012. Data for these reefs between the years 2003 and 2009 can be found on the project site http://www.bco-dmo.org/project/540423.

Location: Moorea, French Polynesia (17.48 degrees S, 149.82 degrees W)

Other associated LTVR datasets:
LTVR - Fate of Reefs - Contains latitude and longitude of reefs used in this dataset
LTVR - Physical Characteristics - Contains characteristics of reefs used in this dataset.
LTVR - Fish Survey
LTVR - Percent Cover Point Contact
LTVR - Percent Visual Cover
LTVR - Pomacentrids
LTVR - Thalasssoma
LTVR - Vermetid Counts
LTVR - Vermetid Removal

Methods & Sampling

Dataset acquisition description

Sampling and Analytical Methodology:

At each of the reefs monitored for the vermetid removal study, the aperture diameter of identifiable vermetids were measured in 10 20 x 20cm quadrats using calipers to the nearest 0.1 mm. Quadrats were placed haphazardly on the reef, 2 on the top and 2 on the upcurrent side (the side in the direction of the current), 2 on each of the left and right of the current direction, and 2 quadrats on the downcurrent side.

Materials: snorkel gear, dive slate, 20x20cm quadrat, calipers

Note extracted from a data comment: All Unk vermetids in 2015 were described as dark shelled, often dark body, curled tight.

Data Processing Description

Dataset Processing Description

BCO-DMO Data Manager Processing Notes for version 2016-01-26:
- Generated from original file "LTVR_VermetidSizesInQuadrats.csv" contributed by Rebecca Atkins
- Parameter names edited to conform to BCO-DMO naming convention found at Choosing Parameter Name
- Any blank rows removed

Current data version date 2017-12-20 replaces version 2016-05-23
* This update adds data new data chronologically and also includes a new column "Diam31" to accommodate a quadrat that contained 31 vermatids.

BCO-DMO Data Manager Processing Notes for version 2017-12-20:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values replaced with no data value "nd" for "no data"
* removed three blank and un-named columns between "Diam31" and "Notes"
* replaced "." values with "nd" for no data after communication with data submitter.
* replaced commas with ; to support csv export
* date formats had problems. Changed dates in format "dd-mmm_yyyy" to match the rest of the dataset "dd-mmm-yy"
* blank rows removed
* double quotes in a comment removed

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1130359	NSF Division of Ocean Sciences

Instruments

Diving Mask and Snorkel

Supplied Name: Mask and snorkel

Supplied Description:

Instrument Type

Generic Name: Diving Mask and Snorkel

Generic Description:

A diving mask (also half mask, dive mask or scuba mask) is an item of diving equipment that allows underwater divers, including, scuba divers, free-divers, and snorkelers to see clearly underwater.

Snorkel: A breathing apparatus for swimmers and surface divers that allows swimming or continuous use of a face mask without lifting the head to breathe, consisting of a tube that curves out of the mouth and extends above the surface of the water.

Measuring Tape

Supplied Name: Transect Tape

Supplied Description:

Materials: transect tape and slates

Instrument Type

Generic Name: Measuring Tape

Generic Description:

A tape measure or measuring tape is a flexible ruler. It consists of a ribbon of cloth, plastic, fibre glass, or metal strip with linear-measurement markings. It is a common tool for measuring distance or length.

Underwater Writing Slate

Supplied Name: Slate

Supplied Description:

Materials: transect tape and slates

Instrument Type

Generic Name: Underwater Writing Slate

Generic Description:

Underwater writing slates and pencils are used to transport pre-dive plans underwater, to record facts whilst underwater and to aid communication with other divers.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
DATE	Date data collected in format dd-mmm-yy	unitless	date
OBSERV	Observer (CWO=Craig W. Osenberg; JS=Jeff Shima)	unitless	person
SITE	Site name (TOW)	unitless	site
REEF	Reef identifier	unitless	site
TREATMENT	Treatment type (control or removal)	unitless	treatment
Location	Spatial position on the reef (Left,Right, Top,Front, Back)	unitless	site_descrip
Rep	Quadrat number (2 per position)	unitless	replicate
Species	Cm = Ceraesignum maximum (formerly documented as Dendropoma maximum and may be referred to as such in other datasets) ; Dp = Dendropoma platypus; Pk= Petaloconchus keenae; S= Serpulorbis variabilis; Unk=Unknown	unitless	species
Number	Number of vermetids counted	per individual	count
Diam1	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam2	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam3	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam4	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam5	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam6	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam7	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam8	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam9	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam10	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam11	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam12	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam13	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam14	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam15	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam16	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam17	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam18	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam19	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam20	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam21	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam22	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam23	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam24	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam25	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam26	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam27	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam28	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam29	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam30	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Diam31	Aperture diameter of each vermetid counted	millimeters (mm)	diameter
Notes	Comment	unitless	comment

Database

Contribute Data

Dataset: LTVR - Vermetid Sizes in Quadrats
Deployment: Osenberg_et_al_Moorea

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: LTVR - Vermetid Sizes in QuadratsDeployment: Osenberg_et_al_Moorea

Dataset acquisition description

Dataset Processing Description

Dataset: LTVR - Vermetid Sizes in Quadrats
Deployment: Osenberg_et_al_Moorea