Locations of ice edges on 18 north-south transects of the BROKE voyage of the Aurora Australis (AA V4 1995/96). Locations determined from direct observations by the seabird observers on board. The fields in this dataset are: Latitude Longitude Ice Conditions Transect

A collection of scanned logs and documentation from the BROKE cruise of the Aurora Australis in the 1995/1996 season. Available logs include: BROKE V4 1995/1996 Catch Composition - 2 Logs BROKE V4 1995/1996 Krill Larvae Log BROKE V4 1995/1996 Krill Morphometrics - 3 logs BROKE V4 1995/1996 Trawl Log BROKE V4 1995/1996 Wet Lab Log See the logs for further details.

This data represents the total collection of acoustic, underway and satellite data collected on voyage 7 of the Aurora Australis in the 2003-04 season. For online access to the underway data for voyage 7 2003-04, see its specific metadata record, or the marine science database. The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them.

This data represents the total collection of acoustic, underway and satellite data collected on voyage 4 of the Aurora Australis in the 2003-04 season. For online access to the underway data for voyage 4 2003-04, see its specific metadata record, or the marine science database. The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them.

Antarctic marine diatoms are sensitive to environment change. This project will determine the environmental niches occupied by key diatom species in Antarctic sediments. This will allow climate changes in the past to be interpreted from Holocene sediments and future changes in diatom biogeography to be predicted. Environmental manipulation and competition experiments using diatoms will identify the response of key taxa to environment modification. Understanding the environmental factors governing their distribution and natural variability will provide a basis to interpret palaeo-environment records, and allow predictions how this temperature-sensitive ecosystem will respond to future change. Diatoms for the experiments were collected in 2002 (Aurora Australia, Voyage 1) and 2003 (Aurora Australis, Voyage 1). On each occasion water from the ship's online seawater tap was filtered through a 20 micrometre plankton net for up to one hour into a sample jar. A portion of the sample was preserved in lugol's iodine for later phytoplankton analysis, and the rest of the sample maintained alive in the dark in seawater at a constant low temperature. The live sample is maintained at the AAD for culturing and environment manipulation and competition experiments. Project 2302 Twenty-two water samples were collected from 24/10/02 to 11/11/02, in open seawater between 53 degrees 50 degrees S and 65 degrees 50 degrees S. At each site, the following were recorded from the ship's data logger: latitude, longitude, date, UCT time, local time, water depth, salinity, water temperature, chlorophyll A, UV radiation, and conductivity.

A major goal of a research expedition by the Australian Antarctic Division over the summer of (2003/04) in the Southern Ocean off Heard Island was to answer some of the questions needed to determine what level of exploitation of Southern Ocean fisheries is sustainable. The use of novel equipment, cutting edge technology and some adept logistical co-ordination allowed the Aurora Australis, on the Southern Ocean, to catch the prey of the predators of Heard Island. This work was accomplished by placing satellite trackers on animals at Heard Island, and then, using the ARGOS system, monitoring their activities in the Southern Ocean around the island. The Aurora Australis assisted in the monitoring and tracking of the animals by searching the areas the animals were foraging for prey species. The animals tracked in this experiment were: Light-mantled sooty albatrosses black-browed albatrosses king penguins macaroni penguins Antarctic fur seals The columns in this data file are: individual_id - the identifier of the individual animal species - the species name of that animal pttid - the identifier of the PTT tracker deployed on that animal deployment_longitude - the longitude at which the tracker was deployed deployment_latitude - the latitude at which the tracker was deployed observation_date - the date (ISO8601 format) of the position observation year, month, day, time, time_zone - as per the observation_date, but in separate columns locationclass - the ARGOS location class of the position (see http://www.argos-system.org/manual/3-location/34_location_classes.htm; value -3 corresponds to a "Z" class, value -2 to "B", value -1 to "A") latitude - the latitude of the position observation longitude - the longitude of the position observation

This data represents the total collection of acoustic, underway and satellite data collected on voyage 2 of the Aurora Australis in the 2003-04 season. For online access to the underway data for voyage 2 2003-04, see its specific metadata record, or the marine science database. The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them.

Environmental manipulation and competition experiments on cultured and natural diatoms will identify the response of key taxa to environment modification. Understanding the environmental factors governing diatom distribution and natural variability will provide a basis to interpret palaeo-environment records, and allow predictions how this temperature-sensitive ecosystem will respond to future change. Environmental manipulation and competition experiments using diatoms will identify the response of key taxa to environment modification. Understanding the environmental factors governing their distribution and natural variability will provide a basis to interpret palaeo-environment records, and allow predictions how this temperature-sensitive ecosystem will respond to future change. Diatoms for the experiments were collected in 2002 (Aurora Australia, Voyage 1) and 2003 (Aurora Australis, Voyage 1). On each occasion water from the ship's online seawater tap was filtered through a 20 micrometre plankton net for up to one hour into a sample jar. A portion of the sample was preserved in lugol's iodine for later phytoplankton analysis, and the rest of the sample maintained alive in the dark in seawater at a constant low temperature. The live sample is maintained at the AAD for culturing and environment manipulation and competition experiments. Project 2364 Twelve water samples were collected from 23/10/03 to 27/10/03, in open seawater between 60 degrees 45' S and 50 degrees 02' S. At each site, the following data were recorded from the ship's data logger: latitude, longitude, UTC time, local time, water depth, salinity, water temperature, fluorescence, UVB, and conductivity.

This thesis was conducted under the auspices of the Southern Ocean Continuous Plankton Recorder (CPR) Survey. The research conducted had the dual aims of providing baseline data for this long-term monitoring program and providing the first detailed analysis of zooplankton communities and distribution patterns in the Southern Ocean south of Australia. Data were principally collected between October 2001 and March 2002, during five voyages. As a primary step I investigated the sampling characteristics of CPR, and assessed the utility of the CPR as a long-term monitoring apparatus in the Southern Ocean. Given the shallow sampling depth of the CPR (~10.5m), a major requirement of this calibration was quantification of the fine-scale vertical distributions zooplankton. This was done through direct comparison of CPR samples with depth integrated NORPAC net hauls. The CPR-NORPAC comparison identified the component of the zooplankton sampled by the CPR and provided a means for comparison between past and present data sets. As a final component of this calibration, it was demonstrated that the CPR was effective at identifying biogeographic boundaries. An essential requirement for the identification of long-term ecological change is baseline data on natural ecosystem variability, particularly seasonality. Therefore, after calibration of the CPR the two fundamental components of spatial and seasonal variability were investigated. Firstly, the fine-scale horizontal structure of zooplankton communities was quantified from a 1170 nautical mile transect, along the 140oE meridian, spanning all of the major oceanographic zones south of Australia. Applying multivariate analyses a unique community zonation was identified which was strongly related to the complex oceanographic environment, characterised by multiple branches of the major fronts. The seasonal component of temporal variability was investigated separately in two major and distinctly different regions, the Seasonal Ice Zone and the Sub-Antarctic / Polar Frontal Zone. Multivariate analyses were used to quantify seasonal changes in species composition, Bray-Curtis dissimilarity, species densities, and the proportional contribution of species to communities. The spatial and temporal variation of zooplankton community structure was discussed in the light of environmental controls, species' vertical distributions, population cycles, and ecosystem functioning. Finally,the application of these data to long-term monitoring was discussed, and recommendations made for future research. The fields in this dataset are: CPR Segment Number Time (GMT) Date Latitude Longitude Segment Length (nautical miles) Salinity Sea Surface Temperature Species Fish Larvae Fish Scales Egg Mass Volume Bongo CTD Depth

This data represents the total collection of acoustic, underway and satellite data collected on voyage 1 of the Aurora Australis in the 2004-05 season. For online access to the underway data for voyage 1 2004-05, see its specific metadata record, or the marine science database. The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them.