A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 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 2019. Based on data from this survey, this paper provides a preliminary assessment for mackerel icefish (Champsocephalus gunnari) population structure, abunda...

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Bibliographic Details
Main Authors: Maschette, D, Nowara, G, Welsford, DC
Format: Conference Object
Language:unknown
Published: CCAMLR 2019
Subjects:
mackerel icefish
stock assessment
Heard Island
Heard
McDonald Islands
Icefish
Online Access:https://eprints.utas.edu.au/32556/
https://www.ccamlr.org/en/wg-fsa-2019/02
id ftunivtasmania:oai:eprints.utas.edu.au:32556
record_format openpolar
spelling ftunivtasmania:oai:eprints.utas.edu.au:32556 2023-05-15T16:33:53+02:00 A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey Maschette, D Nowara, G Welsford, DC 2019 https://eprints.utas.edu.au/32556/ https://www.ccamlr.org/en/wg-fsa-2019/02 unknown CCAMLR Maschette, D orcid:0000-0003-2590-8544 , Nowara, G and Welsford, DC 2019 , 'A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey', paper presented at the Commission for the Conservation of Antarctic Marine Living Resources, 28 August 2019, Hobart, Tasmania. mackerel icefish stock assessment Heard Island Conference or Workshop Item PeerReviewed 2019 ftunivtasmania 2021-09-20T22:18:28Z The annual random stratified trawl survey was undertaken in Division 58.5.2 in the vicinity of Heard Island and McDonald Islands during April 2019. 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 to the west of 79o 20’ E using standard CCAMLR methods (CMIX and Generalized Yield Model).The 2019 survey showed a large 2+ and 3+ cohort in the population. Catches of 527 t in the 2019/20 season and 406 t in the 2020/21 season, respectively, satisfied the CCAMLR decision rules. Conference Object Heard Island Icefish McDonald Islands University of Tasmania: UTas ePrints 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 University of Tasmania: UTas ePrints
op_collection_id ftunivtasmania
language unknown
topic mackerel icefish
stock assessment
Heard Island
spellingShingle mackerel icefish
stock assessment
Heard Island
Maschette, D
Nowara, G
Welsford, DC
A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey
topic_facet mackerel icefish
stock assessment
Heard Island
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 2019. 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 to the west of 79o 20’ E using standard CCAMLR methods (CMIX and Generalized Yield Model).The 2019 survey showed a large 2+ and 3+ cohort in the population. Catches of 527 t in the 2019/20 season and 406 t in the 2020/21 season, respectively, satisfied the CCAMLR decision rules.
format Conference Object
author Maschette, D
Nowara, G
Welsford, DC
author_facet Maschette, D
Nowara, G
Welsford, DC
author_sort Maschette, D
title A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey
title_short A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey
title_full A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey
title_fullStr A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 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 2019 random stratified trawl survey
title_sort preliminary assessment for mackerel icefish (champsocephalus gunnari) in division 58.5.2, based on results from the 2019 random stratified trawl survey
publisher CCAMLR
publishDate 2019
url https://eprints.utas.edu.au/32556/
https://www.ccamlr.org/en/wg-fsa-2019/02
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 Maschette, D orcid:0000-0003-2590-8544 , Nowara, G and Welsford, DC 2019 , 'A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey', paper presented at the Commission for the Conservation of Antarctic Marine Living Resources, 28 August 2019, Hobart, Tasmania.
_version_ 1766023619782115328

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