Mesopelagic fish gut content data from the Kerguelen Axis ecosystem study (AAS_4344): These data are based on samples collected as part of the Kerguelen Axis marine ecosystem study (AAS_4344), chief scientist Andrew Constable. This research was supported by the Australian government under the (i) Cooperative Research Centre Program through the Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC), (ii) Australian Antarctic Science Program (Projects 4343, 4344, 4347 and 4366), and (iii) Australian Research Council’s Special Research Initiative for Antarctic Gateway Partnership (Project ID SR140300001). The preferred citation is: Riaz, J., Walters, A., Trebilco, R., Bestley, S., Lea, M-A. (2019) Stomach content analysis of mesopelagic fish from the southern Kerguelen Axis. Deep Sea Research Part II: Topical Studies in Oceanography. Samples for gut content analysis were collected on board the R.S.V Aurora Australis during the austral summer of 2016 (22 January-17 February) during the Kerguelen Axis marine ecosystem survey (AAS_4344). Analyses focused on four of the most common and widespread Southern Ocean mesopelagic fish species: three myctophids (Electrona antarctica, Gymnoscopelus braueri, Krefftichthys anderssoni), and one bathylagid (Bathylagus antarcticus). Species were sampled across a broad range of size classes to investigate the influence of predator size on predator and prey size relationships. Fish were collected from six sampling stations along the major south-to-north transect of the Kerguelen Axis. Three sampling sites were located in subpolar waters south of the Southern Boundary (SB) of the Antarctic Circumpolar Current (ACC) over the Princess Elizabeth Trough. The other three sampling sites were located north of the Southern Antarctic Circumpolar Circulation Front (SACCF) over the Banzare Bank on the southern Kerguelen Plateau.The contribution and relative importance of prey taxa to stomach contents was quantified with four traditional metrics of dietary composition (Hyslop 1980). These were calculated for each fish species separately at northern and southern sampling stations, and across species within all stations. Hyslop, E. J. (1980) Stomach contents analysis-a review of methods and their application. Journal of Fish Biology 17:411.

This dataset contains the underway data collected during the Aurora Australis Voyage V4 2007/08. Voyage Objectives : MAWSON and CASEY RESUPPLY Personnel retrieval Voyage leader: Ms. Nicki Chilcott Deploy and retrieve personnel - Casey, Mawson, Davis. The need to retrieve personnel by ship is subject to review on implementation of intercontinental air transport. Underway (meteorological) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section).

This dataset contains the underway data collected during the Aurora Australis Voyage 2 2004-05. This voyage began in Hobart, and went to Casey, Davis and Mawson before returning to Fremantle. Underway (meteorological) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section).

This is the CTD data set from RV Tangaroa cruise tan0803, 26th March to 26th April 2008, along the Macquarie Ridge. This was the recovery cruise for the Macquarie Ridge mooring array. The primary aims of the oceanographic program were: 1. recovery of a New Zealand/Australia collaborative mooring array spanning two gaps in the Macquarie Ridge north of Macquarie Island, and 2. occupation of a CTD transect running south from New Zealand to 60o S along the Macquarie Ridge. Eight of the nine moorings were successfully recovered. The mooring at site number 3 (NIWA gear) was unrecoverable, with acoustic release communication indicating only the bottom portion of the mooring remaining and lying flat on the ocean floor. Complete details of the mooring work are included in a separate mooring recovery report. Mooring instruments were downloaded on the ship, with a very high percentage of successful data recording. Ship maneouvering and deck operations all went well throughout the recoveries. Shiptime at the mooring locations was well spent, with daylight hours dedicated to mooring recovery, and night time used for nearby CTD, swath mapping, coring and sea mount activities, and for unspooling of mooring line. The additional container space created on the top deck portside (above the trawldeck) proved extremely valuable for stowage of mooring gear. 58 CTD's were completed during the cruise, including 54 along the main transect, and 4 at coring locations (part of the geology program). Main transect CTD's included 2 across the northern mooring group, and 3 across the southern mooring group. Most casts were to within 25 metres of the bottom. Instrument problems resulted in incomplete casts at the following locations: CTD 9, CTD 11 and CTD 27. CTD 46 was skipped due to bad weather, while further instrument problems prevented a cast at the southernmost site (CTD 50). Niskin bottles were sampled at each station for dissolved oxygen and salinity, with a subset of stations selected for 18O sampling. Some stations were additionally sampled for DIC, alkalinity, 13C, silicate, and U/Th, as part of the geology program. Note that dissolved oxygen data have been removed from this data set, as oxygen bottle samples were never analysed.

Locations of sampling sites for ASAC project 40 on voyage 1 of the Aurora Australis in the 2002/2003 season. Samples were collected between October and November of 2002. The final dataset will contain information on chlorophyll, carotenoids, coccolithophorids and species indentification and counts. Public Summary from the project: This program aims to determine the role of single celled plants, animals, bacteria and viruses in Antarctic waters. We quantify their vital role as food for other organisms, their potential influence in moderating global climate change through absorption of CO2 and production of DMS, and determine their response to effect of climate change. For more information, see the other metadata records related to ASAC project 40 (ASAC_40). The fields in this dataset are: Voyage Tube Label Date (UTC) Time (UTC) Time (Local) Nominal Depth (m) Latitude Longitude Sea Temperature Ice (Presence or Absence - 1 or 0) Plankton Net Sample

This dataset contains the underway data collected during the Aurora Australis Voyage 4 2002-03. This voyage undertook extensive marine science activities North of Mawson. Mawson Harbour was visited twice during the cruise and Davis fly off position was reached once. Underway (meteorological, fluorometer, thermosalinograph and bathymetric) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section). For further information, see the Marine Science Support Data Quality Report at the Related URL section.

Adelie colony boundaries at Welch Island were mapped on the 30 Nov 2014 to provide a boundary for the pole camera survey. Subcolonies were mapped by circumnavigating the perimeter on foot while carrying a Garmin GPS (Legend and Etrex30) to record the track. When mapping the perimeter of the subcolonies a buffer distance of approximately 2.5 meters was maintained between the mapper and the breeding birds. This buffer distance was reduced by .5m to between 2m in the final shapefiles. Please refer to the Seabird Conservation Team Data Sharing Policy for use, acknowledgement and availability of data prior to downloading data.

This dataset contains the underway data from Voyage 4 1995-96 (BROKE) of the Aurora Australis. This was a manned marine science cruise. The major projects were a hydro-acoustic/trawl krill population survey, and the MARGINEX oceanographic survey on bottom water formation. CTD data were also obtained. Marine Science Support Data Quality and Programmer's Reports are available via the Related URL section.

Oceanographic measurements were conducted in January 1994 (on voyage 7 of the 1993/1994 summer season) along WOCE Southern Ocean meridional section SR3 between Tasmania and Antarctica, and along a northward section lying between 82 and 86 deg.E and crossing the Princess Elizabeth Trough. Additional measurements were made at mooring locations, and at a time series station. A total of 102 CTD vertical profile stations were taken, most to near bottom. Over 2000 Niskin water bottle samples were collected for the measurement of salinity, dissolved oxygen, nutrients (phosphate, nitrate+nitrite, silicate), dissolved inorganic and organic carbon, carbon 13, dimethyl sulphide/dimethyl sulphoniopropionate, iodate/iodide, and biological parameters, using a 24 bottle rosette sampler. Measurement and data processing techniques are described, and a summary of the data are presented in graphical and tabular form. The fields in this dataset are: oceanography ship station number date start time bottom time finish time cruise start position bottom position finish position maximum position bottom depth pressure sigma-T temperature (C) (ITS-90) salinity (PSS78) density-1000 (kg.m-3) specific volume anomaly x 108 geopotential anomaly dissolved oxygen (mmol.l-1) number of data points used in the 2 dbar averaging bin standard deviation of temperature values in the 2 dbar bin standard deviation of conductivity values in the 2 dbar bin fluorescence photosynthetically active radiation CTD pressure (dbar) CTD temperature (C) (ITS-90) reversing thermometer temperature (C) CTD conductivity (mS.cm-1) CTD salinity (PSS78) bottle salinity (PSS78) bottle quality flag (-1=rejected, 0=suspect, 1=good) niskin bottle number

Thirteen species of fish have so far been caught in the inshore waters around the Vestfold Hills, including the Rauer Islands, in depths down to approximately 100 m. Species caught depend markedly on the type of fishing gear used, but three species are clearly dominant numerically. Pagonthenia bernacchii is most abundant in the shallower (less than 20 m deep) weedy and rocky habitats, while Chionodraco hamatus is dominant in the deeper (greater than 20 m deep) nearshore troughs and further offshore. Pagonthenia borchgrevinki occupies the specialised habitat associated with sea ice and close-inshore areas, including fjords and Burton Lake. The species list from the Vestfold Hills area is similar to lists from comparable locations in East Antarctica except for the major difference that C. hamatus has not yet been recorded from such shallow waters at the other locations, while P. bernacchi and P. hansoni are much more abundant in water deeper than 20 m at those sites than at Davis. This work was completed as part of ASAC project 239. A Microsoft Access database containing data from this cruise, plus several others is available for download from the URL given below. The Entry ID's of the other metadata records also related to this data are: AADC-00038 AADC-00068 AADC-00073 AADC-00075 AADC-00080 AADC-00082 c88_data The fields in this dataset are: Cruises Date Location Latitude Longitude Species Gear Length Weight Sex Gonad Eye Otolith Stomach Lifestage Family