Dataset: LTVR - Vermetid Removal
Deployment: Osenberg_et_al_Moorea

Counts of Vermetids Removed from the 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)

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/645998/data

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Description

To keep up control and removal treatments, vermetids were identified and removed from the Long Term Vermetid Removal (LTVR) Reefs (129-144, 193-198) in the years 2012-2014. All species of vermetids were identified and removed on each of the “removal treatment” experimental reefs.

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 Sizes in Quadrat

Methods & Sampling

Dataset acquisition description

Sampling and Analytical Methodology:
At each “removal treatment” reefs of the long-term vermetid removal project, four major species of vermetid snail were identified, counted and removed. Reef numbers 135-6, 138-140, 142-144, 194, 197 are the removal reefs. Removal was completed using a vermetid removal device to open the shell and remove the snail tissue. Starting in October 2013, D. merr were included in counts of removed vermetids, but only by one diver (JS).

Materials: snorkel gear, dive slate, vermetid removal tools

Data Processing Description

Dataset Processing Description

Data Processing:
(NA/No Processing notes)

NA- Not applicable (never recorded) to this data set
NR- Not recorded at certain times throughout the data set

BCO-DMO Processing Notes
- Generated from original file "LTVR_VermetidRemoval.csv" contributed by Rebecca Atkins
- Parameter names edited to conform to BCO-DMO naming convention found at Choosing Parameter Name
- Any blank rows 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	DD-MMM-YYYY	date
SITE	Site name (TOW)	text	site
REEF	Reef # (129-144; 193-198)	dimensionless	site
TREATMENT	Treatment type (Control/Removal)	text	treatment
Observer	Initials of observer Name of observer (CWO-Craig W. Osenberg; ALB-Anya L. Brown; JZ-Julie Zill; TF-Tom Frazer; AB-Andy Brooks JS-Jeff Shima)	text	person
C_maximum	Number of Ceraesignum maximum removed (0-200)	number of individuals	number
D_platypus	Number of Dendropoma platypus removed (0-200)	number of individuals	number
PR	Number of Petaloconchus keenae removed (0-200)	number of individuals	number
S__S	Number of Serpulorbis variabilis removed (0-200)	number of individuals	number
D_merr	Number of D. merr removed (0-200)	number of individuals	number
unknown	Number of unidentifiable vermetids (coil shaped) removed (0-200)	number of individuals	number
Notes	Notes	text	comment

Database

Contribute Data

Dataset: LTVR - Vermetid Removal
Deployment: Osenberg_et_al_Moorea

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: LTVR - Vermetid RemovalDeployment: Osenberg_et_al_Moorea

Dataset acquisition description

Dataset Processing Description

Dataset: LTVR - Vermetid Removal
Deployment: Osenberg_et_al_Moorea