Particle size spectra, laser optical plankton counter (LOPC) - data from the SIPEX II voyage of the Aurora Australis

This dataset contains vertical profiles of particles in the upper water column (60 m depth) at six sites. A laser optical plankton counter (LOPC) was deployed through a hole in the sea ice, or from the stern of the Aurora Australis, and lowered to 60 m, logging as it was lowered. The LOPC records particles in the size range 100 um to 20 mm, though the small aperture (7 cm x 7 cm) means that the largest particles are probably only sampled rarely.

For each site, the data are presented as normalised biomass for a series of equivalent spherical diameters (ESD). ESD is based on measurements of length and width of animals likely to be sampled via the LOPC (i.e. animals that are sampled at the same time with a traditional plankton net).

The data were collected on the SIPEX II voyage of the Aurora Australis, from 14/9/2012 to 16/11/2012. Sites were all located in first year pack ice; the ship would nudge up to a floe and then samples of ice, zooplankton, etc. were collected directly by working on the floe. The LOPC was either deployed through a large hole in the pack ice, or it was deployed off the stern of the AA. Method of deployment did not really have an impact on the data collected, it was more a logistical decision based on conditions.

Identification info

Alternate title: Particle size spectra, laser optical plankton counter (LOPC) - data from the SIPEX II voyage of the Aurora Australis

Date (Publication): 2017-08-02

Edition: 1

Citation identifier

Dataset DOI

Title: Information and documentation - Digital object identifier system

Date (Publication): 2012-04-23

Citation identifier: ISO 26324:2012

Citation identifier: doi:10.4225/15/5981595778cc2

Originator

Swadling, K. and Everett, J.

Publisher

Australian Antarctic Data Centre

Principal investigator

SWADLING, KERRIE

School of Zoology

University of Tasmania

GPO BOX 252-05

Hobart

Tasmania

7001

Australia

+61 3 6226 2522

+61 3 6226 2745 (facsimile)

Collaborator

EVERETT, JASON

Fisheries and Marine Environmental Research Lab

School of BEES

University of NSW

NSW

2052

Australia

+61 4 1116 2701

Name: CAASM Metadata

Website: https://data.aad.gov.au/metadata/records/AAS_4140_SIPEX_II_LOPC

Purpose: The data can be used to compare biomass size spectra within and between aquatic environments. It was deployed for the first time in ice-covered waters during this project. It provides a baseline against which we could assess changes to the Southern Ocean environment in the future.

Status: Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

+61 3 6232 3244

+61 3 6232 3351 (facsimile)

Spatial resolution

Vertical sampling distance: 0.01

Topic category

Biota
Oceans

Extent

Description: Temporal Coverage

Temporal extent

TimePeriod: 2012-09-01 2012-10-31

Extent

Description: Vertical Extent - Depth

Vertical element

Minimum value: 750

Maximum value: 3500

Identifier: urn:x-ogc:def:cs:EPSG:6498

Name: Vertical CS. Axis: depth (D). Orientation: down. UoM: m.

Identifier: urn:x-ogc:def:axis:EPSG:113

Name: depth

Title: Zooplankton abundance and biomass size spectra in the East Antarctic sea ice zone during the winter-spring transition.

Date (Publication): 2015

Citation identifier: 131

Author

Wallis, J.R., Swadling, K.M., Everett J.D., Suthers, I.M., Jones, H.J., Buchanan, P.J., Crawford, C.M., James, L.C., Johnson, R., Meiners, K.M., Virtue, P., Westwood, K., and Kawaguchi, S.

Name: Deep-Sea Research II

Page: 170-181