The Role of Appendicularians in Southern Ocean Carbon Flow and Trophodynamics

Data acquisition:

Samples were collected using a 1.5 metre diameter Ring net (150 micron metre mesh) with a wide cod-end on the base (volume approximately 40 Litres). Vertical trawls were to 20 m (unless otherwise specified). Deployment speed was determined by wave conditions with hauling speed at slowest possible speed available by the gantry (approximately than 2 meters per second). The net was rinsed with sea water before the cod-end was removed and the contents determined by observing a sub-sample under the light microscope. Appendicualrians were separated and preserved while the remaining contents of the cod-end were sieved through 120 micrometre mesh and preserved to be sorted more accurately on return to the laboratories.

The appendicularians were quantified and sorted under light microscopes with additional randomly selected individuals being prepared for Scanning Electron Microscopy (SEM) imaging to enable identification to species level and some Oikopleura gaussica stomach's where dissected for SEM dietary analysis.

Data processing:

Data are being processed using 'statistica 6' (and possibly PRIMER or PATN) to determine correlations with physical parameters obtained from underway data, the CTD and the microbial biologist.

Dataset Format:

Database is an excel spreadsheet

Parameters:

Leg - identification number of southern bound legs

Event number - deployment number

Station - leg number . sample point number

CTD - number of corresponding CTD (conductivity, Temperature Depth sample point)

Date - date/month/year

Time (UTC)

Latitude

Longitude

NET (mesh (micro meters) type) - Net type and mesh size in micro meters (150)

DEPTH (m) - vertical trawl depth

# APPENDICULARIANS - count of appendicularians from ship and laboratory based sorting

Fritiliaria drygalski - count of Fritillaridae's from ship and laboratory based sorting

Oiklopleura gaussica - count of Oikopleuridae's from ship and laboratory based sorting

Alive - count of live appendicularians from ship based sorting

SEM IMAGE - individual appendicularians and/or O. gaussica stomach SEM images have been taken

SEM Stub number - stub number that is first two numbers of SEM images

SAMPLE TYPE - BARCODE

Zooplankton - cod-end contents sieved and preserved

Appendicularians - sorted from cod-end

Live - live appendicularians (now preserved)

Other 1- samples that did not fit in to the above categories or additional samples for station

Other 2- additional samples for station that did not fit in to the above categories

This work was completed as part of ASAC projects 2655 and 2679 (ASAC_2655, ASAC_2679).

Identification info

Alternate title: The Role of Appendicularians in Southern Ocean Carbon Flow and Trophodynamics

Date (Publication): 2010-08-19

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:10.4225/15/5987ebb6cf121

Originator

Hosie, G. and Lindsay, M.

Publisher

Australian Antarctic Data Centre

Principal investigator

HOSIE, GRAHAM

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

Collaborator

LINDSAY, MARGARET

Australian Antarctic Division

203 Channel Highway

Kingston

Tasmania

7050

Australia

Name: CAASM Metadata

Website: https://data.aad.gov.au/metadata/records/BROKE-West_Appendicularians

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: 20

Spatial resolution

Spatial resolution: 1.8

Temporal resolution: PT1S

Topic category

Biota
Oceans

Extent