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Southern Ocean Continuous Zooplankton Records

Entry ID: AADC-00099

Summary

Abstract: This dataset contains results from Continuous Plankton Recorder (CPR) surveys in the Southern Ocean. When the opportunity arises, zooplankton species, numbers and abundance data are recorded on a continuous basis as vessels steam through the area between Australia and Antarctica, including Heard and Macquarie Islands. Observations have been made since June 1990 and are ongoing. Obviously the ...

Related URL

Link: View Related Information

Description: Download point for the dataset

Link: View Related Information

Description: Home page for the SO-CPR project

Link: View Related Information

Description: Download a copy of all SO-CPR voyage reports

Link: View Related Information

Description: Citation reference for this metadata record and dataset

Geographic Coverage

Spatial coordinates

N: -40.0

S: -70.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: Hosie, G.

Dataset Title: Southern Ocean Continuous Zooplankton Records

Dataset Series Name: CAASM Metadata

Dataset Release Date: 2018-06-04

Dataset Publisher: Australian Antarctic Data Centre

Version: 4

Dataset DOI: doi:10.26179/5c981198d70de

Online Resource: https://data.aad.gov.au/metadata/records/AADC-00099

Temporal Coverage

Start Date: 1990-06-01

Stop Date: 2019-02-15

Location Keywords

OCEAN > SOUTHERN OCEAN

GEOGRAPHIC REGION > POLAR

Science Keywords

BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > EUPHAUSIIDS (KRILL)

BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES

BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > COPEPODS

BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS

Platform

R/V AA > R/V Aurora Australis
R/V POLARSTERN

Instrument

CPR > Continuous Plankton Recorder

Project

OBIS > OCEAN BIOGEOGRAPHIC INFORMATION SYSTEM

IPY > INTERNATIONAL POLAR YEAR

Quality Caution: Fluorometry is measured differently on each vessel and are thus not directly comparable between vessels. Most values come from Turner fluorometers. The Aurora Australis has a Turner TD10, and the units are arbitrary even though the fluorometer is routinely calibrated. Further, a value of 200 on one voyage is not necessarily the same as 200 on another voyage, even with daily calibration ... and cleaning of the sensor. The fluorometry values are really only of value within a voyage in as much that 200 is double the fluorescence activity of 100. On Tangaroa and Kaiyo Maru, fluorometry has been expressed as a concentration of chlorophyll a. There doesn't seem to be any fluorometry data for Hakuho Maru.

Notes on salinity:

The salinity measurement comes from the various thermosalinograph units mounted in the underway systems of the ships. Salinity on the Aurora Australis has been calculated by thermosalinograph. Salinity values are expressed in practical salinity units.

Notes on water temperature: Temperature on the Aurora Australis is measured by a high resolution thyristor near the entrance of a dedicated seawater line, to avoid the problems of heating of the water in by the ship as it passes through pipes. Again the data may not be fully comparable with other vessels.

Notes on segment length:

The end of each sampling segment is geocoded with latitude and longitude calculated from the one minute time-stamped GPS data. "Segment Length" is the distance in nautical miles for each segment, which is calculated as the cumulative distance between each 1 minute interval. In theory, all segments are 5 nautical miles long. However, this wasn't always the case with early RSV Aurora Australis tows, where it was assumed that the silks advanced at a predetermined rate of 1 cm per nautical mile, whereas each tow had subtle variations in silk advancement, depending on local condition, e.g. whether the CPR was travelling with or against a current. True segment length has since been recalculated. At other times, some silks have been incorrectly cut and the true length has again been recalculated. The last segment of each tow is rarely exactly 5 nautical miles. It is usually less. In this situation we apply the following rule: if the last segment is longer than 2.5 nautical miles it remains as a segment in its own right and can be between 2.5 and 4.99 nautical miles, whereas if it is less than 2.5 it is added to the penultimate segment making the last segment 5 to 7.49 nautical miles. Users of the data can elect to dismiss the last segment. The "Segment Length" field can be used to standardise species counts. Dividing abundance values by the respective segment length will produce numbers per nautical mile, which is equivalent to a volume of water filtered of 0.30 cubic metres (1 nautical mile is 1852 m, multiplied by the aperture area of 12.7 x 12.7 mm). A 5 nautical segment is equivalent to 1.49 cubic metres.

Access Constraints The data are available for download from the provided URL. This is a newer copy of the data (February, 2019). The previous copies of the data were referenced to a different DOI - doi:10.4225/15/5b14b686b6f6d (June, 2018), doi:10.4225/15/5670EF76388E1 (Sep, 2016) and doi:10.4225/15/597add0eeaeab (May, 2017). If you require access to the previous versions of the data, please contact the ...

Use Constraints This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AADC-00099 when using these data.

Please contact the investigators before using these data, as some explanation may be required.

...

Ancillary Keywords

DATE

ABUNDANCE

Data Set Progress

IN WORK

Originating Center

Australian Antarctic Division

Data Center

Australian Antarctic Data Centre, Australia

Data Center URL: http://data.aad.gov.au

Data Center Personnel
Name: DATA OFFICER AADC Phone: +61 3 6232 3244 Fax: +61 3 6232 3351 Email: metadata at aad.gov.au Contact Address: Australian Antarctic Division 203 Channel Highway City: Kingston Province or State: Tasmania Postal Code: 7050 Country: Australia

Distribution

Distribution Media: HTTP

Distribution Size: 4 MB

Distribution Format: CSV

Fees: free

Personnel

GRAHAM HOSIE

Role: INVESTIGATOR

Role: TECHNICAL CONTACT

Role: DIF AUTHOR

Contact Address:

Australian Antarctic Division

203 Channel Highway

City: Kingston

Province or State: Tasmania

Postal Code: 7050

Country: Australia

JOHN KITCHENER

Role: INVESTIGATOR

Role: TECHNICAL CONTACT

Email: john.kitchener at aad.gov.au

Contact Address:

Australian Antarctic Division

203 Channel Highway

City: Kingston

Province or State: Tasmania

Postal Code: 7050

Country: Australia

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 1999-10-07

Last DIF Revision Date: 2019-04-02

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