This dataset contains results from the Second International BIOMASS Experiment II (SIBEX II) cruise of the Nella Dan, January 1985. This cruise is the fourth cruise out of a series of six, investigating the distribution, abundance and population structure of krill Euphausia superba in the Prydz Bay region, Antarctica. SIBEX II was co-ordinated with South Africa, Japan and France, and 66 grid sampling stations covered an area from 58 degrees to 93 degrees East and from 60 degrees South to the Antarctic coast. At each sampling station, surveys of krill and other zooplankton were taken, as well as a CTD cast and water collection for phytoplankton pigment, nutrients and primary production measurement. Species identity and abundance data were obtained. The major species investigated were Euphausia superba, Euphausia frigidia, Euphausia crystallorophias and Thysanoessa marcuria. Other pteropods and cephalopods were also studied, as well as results from hydroacoustic surveys of krill biomass. Summary results are listed in the documentation. The fields in this dataset are: species Station Number Haul Type RMT Biomass Weight Flowmeter Latitude Longitude Time Date Ice Sea State Density Sea Floor Maturity This dataset was updated by Angela McGaffin. This download file also contains the original dataset provided in 2007. There are four files available: SIBEX_II_krill.xls (original file) sibex2_krill_morphometrics.xslx sibex2_station_data.xslx sibex2_zooplankton_corrected.xls A minor data update took place on 202211-03 to add a scanned copy of the original acoustics log.

This dataset contains results from the First International BIOMASS Experiment (FIBEX) cruise of the Nella Dan. It is the first cruise in a series of six designed to assess the distribution and abundance of krill, Euphausia superba. The FIBEX was an international programme co-ordinating the activities of 12 ships from 11 nations in the Southern Atlantic and Indian Oceans. Australia was responsible for surveying an area of the southern Indian Ocean south of 60 degrees and between 60 degrees and 90 degrees east longitude. Surveys of krill and other zooplankton were taken off Antarctica in the Australian sector (Mawson to Davis region) and Prydz Bay in January and March 1981. Species identity and abundance data were obtained. The major species investigated were Euphausia superba, Euphausia frigidia, Euphausia crystallorophias and Thysanoessa marcuria. Other pteropods and cephalopods were also studied. Physical and chemical oceanography data and phytoplankton samples were also obtained, as well as results from hydroacoustic surveys of krill biomass. Several files are available for download at the provided URL. They include excel spreadsheets on summarised data, catch composition data and station lists. Furthermore a pdf document of the report produced from the cruise is also available for download. The fields in this dataset are: Date Time (GMT) Type of Trawl Species Weight Number Latitude Longitude Haul Number Towing Speed (knots) Water Depth (metres) Sea Temperature Target Levels Net Open Time Net Close Time Ice Station Number Flowmeter Reading Towed Distance (nautical miles) Catch Weight (grams) Fishing Start Time Fishing End Time Trajectory Depth Range Top Depth Range Bottom Comments These data are also available via the biodiversity database at the provided URL. 61 taxa and 1,115 observations are present in the biodiversity database collection.

This dataset contains results from the Antarctic Division BIOMASS Experiment III (ADBEX III) cruise of the Nella Dan. It is the fifth cruise in a series of six, conducting a long term field survey providing data on distribution, abundance and population structure of the krill Euphausia superba in the Prydz Bay region, Antarctica. The prime purpose of ADBEX III was to study the ecology of the Crabeater Seal, and surveys of krill and other zooplankton were taken off Antarctica in the Australian sector (east of Mawson) in the Enderby Land region between October and November 1985. Species identity and abundance data were obtained. The major species investigated were Euphausia superba, Euphausia frigidia, Euphausia crystallorophias and Thysanoessa marcuria. Other pteropods and cephalopods were also studied. A CTD cast and water collection for phytoplankton pigment, nutrients and primary production measurements were also made at each net sampling station. Summary results are listed in the documentation. The fields in this dataset are: species Station Number Haul Type RMT Biomass Weight Flowmeter Latitude Longitude Time Date Ice Sea State Density Sea Floor Dive Maturity A minor data update was made on 2022-11-03 to add scanned copies of acoustic logs from the voyage.