From Australian Oceans Data Network
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata

Created 23/06/2025

Updated 23/06/2025

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

A trawl survey is conducted each year at Heard Island and McDonald Islands (HIMI) to assess the abundance and biology of fish and invertebrate species. The survey provides information for input into the stock assessments for the two main fished species, Patagonian toothfish (Dissostichus eleginoides), and mackerel icefish (Champsocephalus gunnari). In addition, it provides information on biodiversity and bycatch species from the fishery. Nine strata were defined as areas for sampling during the annual Random Stratified Trawl Survey (RSTS) conducted on board an industry vessel. The area of the plateau down to 1000 metres depth was divided into nine strata, each covering an area of similar depth and/or fish abundance. A number of randomly allocated stations (between 10 and 30) are sampled in each stratum during every survey to assess the abundance of juvenile and adult toothfish on the shallow and deep parts of the Heard Island Plateau (300 to 1000 metres depth) and to assess the abundance of mackerel icefish on the Heard Island Plateau.
Although the number and boundaries of strata have been adjusted over the years, they have been consistent since 2002 (Welsford et al. 2006). This dataset consists of a polygon shapefile representing the strata and a map displaying the strata.

Files and APIs

Tags

Additional Info

Field Value
Title Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/45b9f67f-9eb0-4fce-94a3-e025db6f68ba
Contact Point
Australian Ocean Data Network
metadata@aad.gov.au
Reference Period 01/01/2002
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        71.091,
        -53.476
      ],
      [
        77.464,
        -53.476
      ],
      [
        77.464,
        -50.276
      ],
      [
        71.091,
        -50.276
      ],
      [
        71.091,
        -53.476
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/heard-island-and-mcdonald-islands-random-stratified-trawl-survey-rsts-strata