Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata
Progress Code: completed Purpose To provide information for input into fish stock assessments. 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 st...
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Australian Ocean Data Network
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Online Access: | https://researchdata.edu.au/heard-island-mcdonald-rsts-strata/2821611 |
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ftands:oai:ands.org.au::2821611 2023-10-09T21:50:02+02:00 Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata Spatial: westlimit=71.091; southlimit=-53.476; eastlimit=77.464; northlimit=-50.276 Temporal: From 2002-01-01 https://researchdata.edu.au/heard-island-mcdonald-rsts-strata/2821611 unknown Australian Ocean Data Network https://researchdata.edu.au/heard-island-mcdonald-rsts-strata/2821611 HIMI_RSTS_Strata AU/AADC > Australian Antarctic Data Centre, Australia oceans EARTH SCIENCE > OCEANS > AQUATIC SCIENCES > FISHERIES Fishing TRAWL SHIPS R/V AA > R/V Aurora Australis AMD/AU AMD CEOS SOOS GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN dataset ftands 2023-09-18T22:48:42Z Progress Code: completed Purpose To provide information for input into fish stock assessments. 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. Dataset aurora australis Heard Island Icefish McDonald Islands Patagonian Toothfish Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean Heard Island Heard Island ENVELOPE(73.510,73.510,-53.117,-53.117) Heard ENVELOPE(73.510,73.510,-53.117,-53.117) McDonald Islands ENVELOPE(72.600,72.600,-53.033,-53.033) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
oceans EARTH SCIENCE > OCEANS > AQUATIC SCIENCES > FISHERIES Fishing TRAWL SHIPS R/V AA > R/V Aurora Australis AMD/AU AMD CEOS SOOS GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN |
spellingShingle |
oceans EARTH SCIENCE > OCEANS > AQUATIC SCIENCES > FISHERIES Fishing TRAWL SHIPS R/V AA > R/V Aurora Australis AMD/AU AMD CEOS SOOS GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata |
topic_facet |
oceans EARTH SCIENCE > OCEANS > AQUATIC SCIENCES > FISHERIES Fishing TRAWL SHIPS R/V AA > R/V Aurora Australis AMD/AU AMD CEOS SOOS GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN |
description |
Progress Code: completed Purpose To provide information for input into fish stock assessments. 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. |
format |
Dataset |
title |
Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata |
title_short |
Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata |
title_full |
Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata |
title_fullStr |
Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata |
title_full_unstemmed |
Heard Island and McDonald Islands Random Stratified Trawl Survey (RSTS) strata |
title_sort |
heard island and mcdonald islands random stratified trawl survey (rsts) strata |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/heard-island-mcdonald-rsts-strata/2821611 |
op_coverage |
Spatial: westlimit=71.091; southlimit=-53.476; eastlimit=77.464; northlimit=-50.276 Temporal: From 2002-01-01 |
long_lat |
ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(72.600,72.600,-53.033,-53.033) |
geographic |
Southern Ocean Heard Island Heard Island Heard McDonald Islands |
geographic_facet |
Southern Ocean Heard Island Heard Island Heard McDonald Islands |
genre |
aurora australis Heard Island Icefish McDonald Islands Patagonian Toothfish Southern Ocean |
genre_facet |
aurora australis Heard Island Icefish McDonald Islands Patagonian Toothfish Southern Ocean |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/heard-island-mcdonald-rsts-strata/2821611 HIMI_RSTS_Strata |
_version_ |
1779313100668796928 |