Cape Darnley Early-Autumn Phytoplankton Bloom, March 2012

Occurrence
Latest version published by Australian Antarctic Data Centre on Mar 6, 2020 Australian Antarctic Data Centre
Publication date:
March 6, 2020
License:
CC-BY 4.0

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

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Description

These data relate to a large-scale early-autumn phytoplankton bloom that occurred off Cape Darnley, East Antarctica, in March 2012. The bloom was detected by Dr Jan Lieser (Antarctic Climate and Ecosystems Cooperative Research Centre, ACE-CRC) through MODIS satellite and was opportunistically sampled from RSV Aurora Australis using the uncontaminated seawater line. Samples were analysed for protist species and abundances using light and scanning electron microscopy, and pigment analyses were conducted using high performance liquid chromatography. Additional water samples were taken for dissolved nutrient analyses. Specific details of the files are: Cape Darnley Protist Counts Samples were preserved with 1 % vol:vol Lugols iodine and stored in glass bottles in the dark at 4 degrees C. Protists were identified and counted using phase and Nomarski interference optics using Olympus IX71 and IX81 inverted microscopes at 400X to 640X magnification. Bright field optics were also used to discriminate taxa that contained chloroplasts. Protistan taxa were counted in 20 randomly chosen fields of view, except for highly abundant taxa that were counted in a subset of the field of view defined by an ocular quadrant (Whipple grid). Cell biovolumes and carbon conversion statistics were used to calculate the cell biomass of protistan taxa/groups. Cape Darnley Fluorometer Calibration Fluorometer measurements from the ships underway system were calibrated using chlorophyll a readings determined through high performance liquid chromatography. A linear relationship was established between fluorometer v HPLC chlorophyll a measurements at the same sites. The linear equation was then used to convert all underway fluorometry data from the voyage. Cape Darnley Bloom HPLC Pigments CHEMTAX summary Major phytoplankton groups at each site determined through analysis of pigments using high performance liquid chromatography and CHEMTAX. Methods were according to that of Wright et al. (2010). Cape Darnley Bloom Nutrients Dissolved nutrient concentrations. Samples were analysed by the Department of Primary Industries, Parks, Water and Environment, 18 St. Johns Avenue, Newtown, Tasmania 7008. Cape Darnley Underway Data VOYAGE_04_0_201112 Raw underway data from Aurora Australis in the bloom region Cape Darnley Underway Data Maps Maps of the underway data in the bloom regionQuality: We were only able to obtain samples through the uncontaminated seawater line, with the intake positioned at 4.8 m below the ship. However, we think the majority of the bloom was at the surface associated with ice. Our data therefore likely under-represents the true surface phenomenon. 2018-10-10 The original files was reformatted to fit OBIS/GBFI/IPT Biodiversity.AQ tracking standards, and a new datasheet "CapeDarnelyBloom_2012.csv" was created. The new dataset contains datasetID, occurrenceID, recordNumber, verbatimLatitude, verbatimLongitude, decimalLatitude, decimalLongitude, locationID, locality, eventRemark, eventDate, year, month, basisOfRecord, occurrenceStatus, organismQuantity, organismQuantityType, preparations, institutionCode, continent. The lowest taxonomical rank of the species identified that could be determined is provided, after matched in WoRMS (World Register of Marine Species).

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 91 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Westwood, K.J., Davidson, A.T. and Wright, S. (2015, updated 2017) Cape Darnley Early-Autumn Phytoplankton Bloom, March 2012

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is Australian Antarctic Data Centre. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: c4a243a3-cc76-4e84-9f28-8a3c919bf0f4.  Australian Antarctic Data Centre publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Atlas of Living Australia.

Keywords

Occurrence

External data

The resource data is also available in other formats

Point of truth metadata record https://data.aad.gov.au/metadata/records/Cape_Darnley_Bloom ASCII DIF 9.9

Contacts

KAREN WESTWOOD
  • Point Of Contact
  • INVESTIGATOR
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU
ANDREW DAVIDSON
  • Point Of Contact
  • INVESTIGATOR
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU
SIMON WRIGHT
  • Point Of Contact
  • INVESTIGATOR
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU
DAVE CONNELL
  • Metadata Provider
  • DIF AUTHOR
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU
KAREN WESTWOOD
  • Point Of Contact
  • TECHNICAL CONTACT
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU
ANDREW DAVIDSON
  • Point Of Contact
  • TECHNICAL CONTACT
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU
SIMON WRIGHT
  • Point Of Contact
  • TECHNICAL CONTACT
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU
DATA OFFICER AADC
  • Distributor
  • DATA CENTER CONTACT
Australian Antarctic Data Centre, Australia
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU

Geographic Coverage

OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR

Bounding Coordinates South West [-67.135, 66], North East [-66, 67.466]

Taxonomic Coverage

Species of phytoplankton were identified using a Olympus IX71 and IX81 inverted microscopes

Kingdom Protozoa
Class Choanoflagellatea, Cryptophyceae, Oligotrichida
Family Bacillariaceae
Genus Chaetoceros, Fragilariopsis, Gyrodinium
Infragenericname Dinoflagelata

Temporal Coverage

Start Date / End Date 2012-03-04 / 2012-03-07

Bibliographic Citations

  1. Lieser, J.L., Curran, M.A.J., Bowie, A.R., Chever, F., Davidson, A.T., Doust, S., Fraser, A.D., Galton-Fenzi, B.K., Massom, R.A., Meiners, K.M., Melbourne-Thomas, J., Reid, P.A., Strutton, P.G., Vance, T.R., Vancoppenolle, M., Westwood, K.J., Wright, S.W. (2015) Large scale algal blooms associated with Antarctic sea-ice growth in autumn. Geophysical Research Letters.
  2. Wright, S., van den Enden, R., Pearce, I., Davidson, A.T., Scott., F.J., Westwood, K.J. (2010) Phytoplankton community structure and stocks in the Southern Ocean (30-80E) determined by CHEMTAX analysis of HPLC pigment signatures. Deep Sea Research II. 57, 758-778 DOI: 10.1016/j.dsr2.2009.06.015

Additional Metadata

Marine, harvested by OBIS

Alternative Identifiers c4a243a3-cc76-4e84-9f28-8a3c919bf0f4
https://data.aad.gov.au/ipt/resource?r=capedarnely_bloom