Dataset: Brown_et_al_2016 QuadratSurvey
Deployment: Osenberg_et_al_Moorea

Data collected on the die off of vermetids in French Polynesia.

View Data: For data, See Dataset Metadata Page: https://osprey.bco-dmo.org/dataset/721232

Principal Investigator:

Anya L. Brown (University of Georgia, UGA)

Co-Principal Investigator:

Thomas Frazer (University of Florida, UF)

Craig Osenberg (University of Georgia, UGA)

Jeffrey Shima (Victoria University of Wellington)

Contact:

Anya L. Brown (University of Georgia, UGA)

BCO-DMO Data Manager:

Mathew Biddle (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

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

Version:

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Description

Vermetid counts and their status on reefs around French Polynesia.

Related Datasets:

Brown_et_al_2016_SimpleCounts: https://www.bco-dmo.org/dataset/721511
Brown_et_al_2016_SizeComparison: https://www.bco-dmo.org/dataset/721581
Brown_et_al_2016_QuadratSurvey: https://www.bco-dmo.org/dataset/721232 (The current page.)

Methods & Sampling

Dataset acquisition description

In Tahiti and Moorea, Anya, Amy and Morgan visited different sites around the island and counted the vermetids, recorded the aperature size (length of the shell opening) as well as their statuses. Statuses were determined by Alive Net (AN), if snails were alive and making a net, Alive (A), if snails were alive and are not retracted but are not making a net, Alive Retracted (AR), if snails are alive, but they are retracted at least 5mm into the shell, or Recently Dead (RD) if snails had recently died and have either a bright white shell or a shell with a light layer of turf growing.

Hal Lecinsky and Nicole Boriski and Leslie Bissey (from the Paul Gaughin) took photographs of vermetids and sent them to Anya, and she determined the status of the snails (AN, A, AR, RD). For these data, aperature size could not be determined.

For the Hilton site, we used the reefs where we had counted vermetids and also assessed vermetid status.

Data Processing Description

Dataset Processing Description

BCO-DMO Processing:

added conventional header with dataset name, PI name, version date
modified parameter names to conform with BCO-DMO naming conventions
converted date from mm-dd-yy to yyyymmdd.
replaced spaces with underscores.
blank values replaced with no data value 'nd'.

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: snorkel

Supplied Description:

Researchers snorkeled to the reef crest.

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.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Date	date of sampling in yyyymmdd format	unitless	date
Observer	Initials of the observer (Anya L Brown; Morgan V Farrell; Amy A Briggs; Hal Lescinsky; Leslie Bissey and Nicole Boriski)	unitless	person
Site	Name of site	unitless	site
Location_name	Island name and number that corresponds to a unique site	unitless	site_descrip
Island	Island where counts were made	unitless	region
quad_num	photo number (for Hal; Nicol and Leslie data); reef number (Hilton site) or quadrate number from which data were collected. (the rest)	unitless	sta_id
Aperature_size	length of aperature	milimeters (mm)	length
Verm_status	status of vermetids (Alive; Alive with a net; Alive and retracted; Recently Dead)	unitless	sample_descrip
Amount_retracted	length retracted into shell	milimeters (mm)	length
Net_presence	Presence or absence of a net	unitless	sample_descrip
Loc_num	numerical representation of different sites	unitless	site
Notes	Additional comments.	unitless	comment

Database

Contribute Data

Dataset: Brown_et_al_2016 QuadratSurvey
Deployment: Osenberg_et_al_Moorea

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Brown_et_al_2016 QuadratSurveyDeployment: Osenberg_et_al_Moorea

Dataset acquisition description

Dataset Processing Description

Dataset: Brown_et_al_2016 QuadratSurvey
Deployment: Osenberg_et_al_Moorea