Dataset: McMurdo volcano sponge size

Name: Volcano sponge size on artificial substrates in McMurdo Sound, Antarctica from October 2010 (McMurdo Marine Benthos project)
Published: 2013-09-24
Keywords: oceans

Cite This Dataset

Spatial Extent: N:-77.57353 E:166.62761 S:-77.83286 W:163.52883

Project:

Decadal Variation in Antarctic Marine Benthic Ecosystems (McMurdo Marine Benthos)

Principal Investigator:

Dr Paul Dayton (University of California-San Diego, UCSD-SIO)

Co-Principal Investigator:

Dr John Oliver (Moss Landing Marine Laboratories, MLML)

Scientist:

Stacy Kim (Moss Landing Marine Laboratories, MLML)

Contact:

Stacy Kim (Moss Landing Marine Laboratories, MLML)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

2013-09-24

Version Date:

2013-09-24

Validated:

Yes

Current State:

Final no updates expected

Volcano sponge size on artificial substrates in McMurdo Sound, Antarctica from October 2010 (McMurdo Marine Benthos project)

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Description

Volcano sponge size was measured by scuba divers on artificial substrates in McMurdo Sound, Antarctica.

Methods & Sampling

Anoxycalyx joubini sponges, growing on artificial substrates of known ages, were imaged by divers and remotely operated vehicle (SCINI) during the austral summer 2010. Surface (dive hole) locations were recorded with a handheld GPS, and organisms were located within 200 m of the hole. Depths were accurate to 1 m, and heights above bottom were accurate to 50 cm. Images were scaled with parallel lasers, and maximum diameter of the sponges was measured from images. The diameter measurements made were accurate to 0.001 cm, however, the representation of the maximum diameter of the sponges is within 2 cm, with error due to the angles of some images.

Data Processing Description

Weight of sponges was derived from a regression developed in Dayton et al. 1974.
Wet weight = 0.348*diameter^2.88

Related publications:

Dayton PK, Robilliard GA, Paine RT, Dayton LB (1974) Biological accommodation in the benthic community at McMurdo Sound, Antarctica. Eco Monogr 44: 105–128.

Dayton PK, Kim S, Jarrell SC, Oliver JS, Hammerstrom K, et al. (2013) Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini. PLoS ONE 8(2): e56939. doi:10.1371/journal.pone.0056939

Data Files

File
McMurdo_sponges.csv (Comma Separated Values (.csv), 4.31 KB) MD5:1d11b396c02abc5ad427e775d94288f8 Primary data file for dataset ID 4048

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Antarctic Sciences	ANT-0842064

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
McMurdo_SCINI_2010		2010-10-01	shoreside McMurdo_Dayton		data info

Instruments

Remotely Operated Vehicle

Supplied Name: SCINI

Supplied Description:

Submersible Capable of under Ice Navigation and Imaging (SCINI) is a small, slender vehicle that can fit through a 20 cm hole in the ice, allowing for deployment without heavy drilling equipment and with minimal logistical support. Its maximum depth capability is 300 m. SCINI is equipped with two video cameras, scaling lasers, and lights, with forward speeds of up to 4 knots. SCINI uses Ethernet over power on a 400 m long two-wire tether. A long baseline acoustic positioning system is used for navigation which uses a combination of two to four acoustic transducers hanging below the ice and a synchronized pinger on the vehicle for positional accuracy of better than 1 metre. [See Cazenave, F, R Zook, D Carroll, M Flagg, S Kim. 2011. Development of the ROV SCINI and deployment in McMurdo Sound, Antarctica. Journal of Ocean Technology 6(3):39-58.]

Instrument Type

Generic Name: Remotely Operated Vehicle

Acronym: ROV

Generic Description:

Remotely operated underwater vehicles (ROVs) are unoccupied, highly maneuverable underwater robots operated by a person aboard a surface vessel. They are linked to the ship by a group of cables that carry electrical signals back and forth between the operator and the vehicle. Most are equipped with at least a video camera and lights. Additional equipment is commonly added to expand the vehicle’s capabilities. These may include a still camera, a manipulator or cutting arm, water samplers, and instruments that measure water clarity, light penetration, and temperature.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
day_local	day of month; local time	unitless	day_local
depth_w	depth of the water	meters	depth_w
diameter_cm	diameter of organism	centimeters	no_bcodmo_term
lat	latitude; North is positive	decimal degrees	lat
lon	longitude; East is positive	decimal degrees	lon
mab	meters above the bottom	meters	no_bcodmo_term
month_local	month; local time	unitless	month_local
species	species sampled	unitless	species
substrate_type	substrate type at sampling	unitless	no_bcodmo_term
wet_weight_g	wet weight of organism	grams	weight_g
year	year; local time	unitless	year

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Database

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Dataset: McMurdo volcano sponge size