Dataset: LTVR - Vermetid Counts

Name: Vermetid counts from long-term vermetid removal reefs in Moorea, French Polynesia from 2012-2016
Published: 2017-12-05
Keywords: oceans

Cite This Dataset

Spatial Extent: N:-17.47499 E:-149.79251 S:-17.47499 W:-149.79251

Temporal Extent: 2012-01-24 - 2016-08-06

Project:

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

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)

Version:

Version Date:

2017-12-05

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Vermetid counts from long-term vermetid removal reefs in Moorea, French Polynesia from 2012-2016

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Description

This dataset contains counts of the vermetid species Ceraesignum maximum at each Long Term Vermetid Removal (LTVR) Reef at the "TOW" site in Moorea, French Polynesia (-17.4745,-149.7925). The surveys were conducted between 2012 and 2014 as part of an ongoing census. These data are meant to provide contextual information for how vermetids affect reef communities.

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 Removal
LTVR - Vermetid Sizes in Quadrat

Methods & Sampling

Sampling and Analytical Methodology:
At each of the reefs monitored for the vermetid removal study, Ceraesignum maximum (vermetid snail) were counted by a diver swimming up to each of the 22 patch reefs.

Materials: snorkel gear, dive slate

Data 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 setnd stands for "no data" and is the default missing data indentifier in the BCO-DMO system.

BCO-DMO Processing Notes
- Generated from original file "LTVR_VermetidCounts.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 2: 2017-12-05 replaces version 1: 2016-05-23 and extends the dataset time range to 2016

Data Files

File
LTVR_VermetidCounts.csv (Comma Separated Values (.csv), 4.84 KB) MD5:0f0cf2f2aa50a5891a50117d4bdfd6ba Primary data file for dataset ID 645936

More Information about this dataset

Funding Sources

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

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Osenberg_et_al_Moorea		2003-05-19	Osenberg et al Moorea	Craig Osenberg (Principal Investigator)	data info

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

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

Supplied Name	Supplied description	Supplied Units	Standard Name
DATE	Date data collected	DD-MMM-YYYY	date
OBSERV	Initials of observer (Craig Osenberg; Jeff Shima) (CWO; JS )	text	person
SITE	Site name (TOW)	text	site
REEF	Reef # (129-144; 193-198)	dimensionless	site
TREATMENT	Treatment type (Control/Removal)	text	treatment
C_maximum_counts_JS	Counts of D. maximum by JS (0-230)	number of individuals	number
C_maximum_counts_CWO	Counts of D. maximum by CWO (0-230)	number of individuals	number
Notes	Notes	text	comment

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Database

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Dataset: LTVR - Vermetid Counts