A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey
The annual random stratified trawl survey was undertaken in Division 58.5.2 in the vicinity of Heard Island and McDonald Islands during April 2021. Based on data from this survey, this paper provides a preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) population structure, abun...
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2021
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ftunivtasecite:oai:ecite.utas.edu.au:155006 2023-05-15T16:33:55+02:00 A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey Maschette, D Wotherspoon, S Ziegler, P 2021 application/pdf https://meetings.ccamlr.org/en/wg-fsa-2021/20 http://ecite.utas.edu.au/155006 en eng CCAMLR http://ecite.utas.edu.au/155006/1/155006 - A preliminary assessment for mackerel icefish.pdf Maschette, D and Wotherspoon, S and Ziegler, P, A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey, Commission for the Conservation of Antarctic Marine Living Resources, 27 August (2021) [Refereed Conference Paper] http://ecite.utas.edu.au/155006 Agricultural Veterinary and Food Sciences Fisheries sciences Fisheries management Refereed Conference Paper PeerReviewed 2021 ftunivtasecite 2023-01-30T23:17:10Z The annual random stratified trawl survey was undertaken in Division 58.5.2 in the vicinity of Heard Island and McDonald Islands during April 2021. Based on data from this survey, this paper provides a preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) population structure, abundance and yield in Division 58.5.2 using standard CCAMLR methods (CMIX and Generalized Yield Model).The 2021 survey showed a large 3+ cohort in the population and a high biomass. Based on the Grym implementation, catches of 1528 t in the 2021/22 season and 1138 t in the 2022/23 season satisfy the CCAMLR decision rules. Conference Object Heard Island Icefish McDonald Islands eCite UTAS (University of Tasmania) 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 |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Agricultural Veterinary and Food Sciences Fisheries sciences Fisheries management |
spellingShingle |
Agricultural Veterinary and Food Sciences Fisheries sciences Fisheries management Maschette, D Wotherspoon, S Ziegler, P A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey |
topic_facet |
Agricultural Veterinary and Food Sciences Fisheries sciences Fisheries management |
description |
The annual random stratified trawl survey was undertaken in Division 58.5.2 in the vicinity of Heard Island and McDonald Islands during April 2021. Based on data from this survey, this paper provides a preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) population structure, abundance and yield in Division 58.5.2 using standard CCAMLR methods (CMIX and Generalized Yield Model).The 2021 survey showed a large 3+ cohort in the population and a high biomass. Based on the Grym implementation, catches of 1528 t in the 2021/22 season and 1138 t in the 2022/23 season satisfy the CCAMLR decision rules. |
format |
Conference Object |
author |
Maschette, D Wotherspoon, S Ziegler, P |
author_facet |
Maschette, D Wotherspoon, S Ziegler, P |
author_sort |
Maschette, D |
title |
A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey |
title_short |
A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey |
title_full |
A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey |
title_fullStr |
A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey |
title_full_unstemmed |
A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey |
title_sort |
preliminary assessment for mackerel icefish ( champsocephalus gunnari ) in division 58.5.2, based on results from the 2021 random stratified trawl survey |
publisher |
CCAMLR |
publishDate |
2021 |
url |
https://meetings.ccamlr.org/en/wg-fsa-2021/20 http://ecite.utas.edu.au/155006 |
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 |
Heard Island Heard Island Heard McDonald Islands |
geographic_facet |
Heard Island Heard Island Heard McDonald Islands |
genre |
Heard Island Icefish McDonald Islands |
genre_facet |
Heard Island Icefish McDonald Islands |
op_relation |
http://ecite.utas.edu.au/155006/1/155006 - A preliminary assessment for mackerel icefish.pdf Maschette, D and Wotherspoon, S and Ziegler, P, A preliminary assessment for mackerel icefish ( Champsocephalus gunnari ) in Division 58.5.2, based on results from the 2021 random stratified trawl survey, Commission for the Conservation of Antarctic Marine Living Resources, 27 August (2021) [Refereed Conference Paper] http://ecite.utas.edu.au/155006 |
_version_ |
1766023652280631296 |