Keyword

Research Voyage: SO 7/80

4 record(s)

 

Type of resources

Topics

Keywords

Contact for the resource

Provided by

Formats

Update frequencies

Status

draft

From 1 - 4 / 4
  • Categories  

    This dataset contains the processed Hydrology (HYD) data collected on Soela voyage SO 7/80. The voyage took place in the North West Shelf, Arafura Sea, Gulf of Carpentaria and Coral Sea during 1 November - 20 December 1980. This dataset has been processed and is archived within the CSIRO Marine and Atmospheric Research Data Centre in Hobart. Additional information regarding this dataset is contained in the cruise report for this voyage and/or the data processing report (as available). Soela on-voyage hydrology data are typically obtained from water samples collected in Niskin bottles at various depths. Parameters measured normally comprise temperature, salinity, dissolved oxygen, phosphate, nitrate, silicate, and nitrite.

  • The dataset comprises catch records of syngnathids (seahorses, pipefish etc.) from demersal fish trawls, demersal prawn trawls and epibenthic sled samples from the North Marine Region. It is a compilation of data from 9 research voyages (SO 05/80, SO 07/80, SO 02/81, SS 03/90, SS 05/91, SS 01/93, SS 02/97, SS 08/97 and SS 03/98) and the CSIRO scientific observer program, 1996-98. The dataset was created for the Department of the Environment and Water Resources (DEW) for use in profiling of the North Marine Region during the development of a marine bioregional plan for the region.

  • The dataset comprises catch records of demersal fish and invertebrates from demersal fish trawls, demersal prawn trawls and epibenthic sled samples from the Northern Planning Region. It is a compilation of data from 9 research voyages (SO 05/80, SO 07/80, SO 02/81, SS 03/90, SS 05/91, SS 01/93, SS 02/97, SS 08/97and SS 03/98). The catch of each species in a sample is recorded as raw weight and count, gross weight and count (raw values divided by the subsampling fraction) and per area weight and count. Species are recorded as CAAB codes. Sample attributes include the voyage, location, time, sampling gear and sampled area. The dataset was created for the Department of the Environment and Water Resources (DEW) for use in profiling of the North Marine Region during the development of a marine bioregional plan for the region. Data from all voyages are in a single set of tables and in the same structure and measurement units. The aim of the dataset is to provide convenient access to the data from the source datasets, which were stored in various data structures in various locations. Although the data are presented in uniform measurement units of counts and weights per unit area, data from different samples cannot be assumed to be comparable. In particular, the catchability of a species varies among types of sampling gears. Even samples from a given gear type on a given voyage may not all be comparable to one another. For example, gear may be altered during a voyage (e.g. multiple codend mesh sizes may be tried) and fish trawls are occasionally aimed at fish visible on the echo sounder. The data should therefore be analysed no more than semi-quantitatively. Assumptions on the comparability of samples -- even from a single voyage and gear type -- should be based on reference to the voyage reports.

  • Categories  

    This record is an overview entry for biological data collected on Soela cruise SO 7/80. This cruise took place in the North West Shelf, Arafura Sea, Gulf of Carpentaria and Coral Sea during 1 November - 20 December 1980, under the leadership of G. West and W. Okera. Biological data collected on this cruise include acoustic data from the Simrad 11000, Atlas and EK 120. Species composition and weight by species of each demersal and pelagic trawl. Biological data were collected on: Carangidae (16 species); Clupeiformes (9 species); Leiognathidae (12 species); Scrombroidei (4 species); sharks (13 species); Sphyraenidae (2 species); Trichiuridae (1 species) and Parastromateidae (1 species). Length frequencies on several other abundant species (see Appendix 1 of cruise summary). Observations on surface sightings of baitfish, tuna, mammals and 35 sea bird species. From the Arafura Sea, over 1000 fish specimens representing 239 different species were collected, preserved and registered for the collections of the Australian Museum. Other collections made were, otoliths from over 50 species; 48 culture samples of bacteria from bioluminescent fishes; sea snakes and invertebrate species. Data on size/sex ratio for 9 species. Gonad samples and additional tissue samples (liver and pituitary) were collected from selected species for genetic and biochemcial studies. Data on samples from the North West Shelf region for continuing biological studes. Plankton samples for phyllosoma larvae from the Coral Sea including two nansen casts and 7 XBT recordings. Prawn and fish samples from prawn net trawls carried out in the Arafura Sea and the Gulf of Carpentaria. Catch composition data from the 4 Munro stations (Dr I Munro sampled these stations during 1963-65).(derived from the cruise report). - Biological Field Data Sheets recorded during this voyage have been scanned to PDF, and are available (to CSIRO Staff) on-line. See the details link under "Stored Media List" (below).