West coast demersal scalefish resource status report. In: Status reports of the Fisheries and Aquatic Resources of Western Australia 2013/14: State of the Fisheries eds. W.J. Fletcher and K. Santoro (original) (raw)
Related papers
2012
Fisheries Research Report [Western Australia] No. 253, overall stock to begin at the Bioregion level. An overall estimate of SPR for the WCB was not produced for P. auratus as its biology differs substantially among management areas. • While there was evidence of recovery of P. auratus stocks at the bioregion level, the estimate of F in 2008/09-2010/11 was higher than that for G. hebraicum and much higher in the northern half of the WCB than the southern half. • The P. auratus stock in the WCB has begun to recover. However, as for G. hebraicum, it has not yet recovered to acceptable levels. Stock assessment results for Choerodon rubescens • The most recent estimates of commercial catch of C. rubescens were approximately equivalent to the catch benchmark but recreational catches were slightly greater.
2011
Fisheries Research Report [Western Australia] No. 253, overall stock to begin at the Bioregion level. An overall estimate of SPR for the WCB was not produced for P. auratus as its biology differs substantially among management areas. • While there was evidence of recovery of P. auratus stocks at the bioregion level, the estimate of F in 2008/09-2010/11 was higher than that for G. hebraicum and much higher in the northern half of the WCB than the southern half. • The P. auratus stock in the WCB has begun to recover. However, as for G. hebraicum, it has not yet recovered to acceptable levels. Stock assessment results for Choerodon rubescens • The most recent estimates of commercial catch of C. rubescens were approximately equivalent to the catch benchmark but recreational catches were slightly greater.
Status of demersal finfish stocks on the west coast of Australia
Fisheries Research Report [Western Australia] No. 253, 2014 overall stock to begin at the Bioregion level. An overall estimate of SPR for the WCB was not produced for P. auratus as its biology differs substantially among management areas. • While there was evidence of recovery of P. auratus stocks at the bioregion level, the estimate of F in 2008/09-2010/11 was higher than that for G. hebraicum and much higher in the northern half of the WCB than the southern half. • The P. auratus stock in the WCB has begun to recover. However, as for G. hebraicum, it has not yet recovered to acceptable levels. Stock assessment results for Choerodon rubescens • The most recent estimates of commercial catch of C. rubescens were approximately equivalent to the catch benchmark but recreational catches were slightly greater.
2014
Telephone: (08) 8207 5400 Facsimile: (08) 8207 5406 http://www.sardi.sa.gov.au DISCLAIMER The authors warrant that they have taken all reasonable care in producing this report. The report has been through the SARDI internal review process, and has been formally approved for release by the Research Chief, Aquatic Sciences. Although all reasonable efforts have been made to ensure quality, SARDI does not warrant that the information in this report is free from errors or omissions. SARDI does not accept any liability for the contents of this report or for any consequences arising from its use or any reliance placed upon it. The SARDI Report Series is an Administrative Report Series which has not been reviewed outside the department and is not considered peer-reviewed literature. Material presented in these Administrative Reports may later be published in formal peer-reviewed scientific literature.
2021 assessment of the status of the West Coast Demersal Scalefish Resource
2021
A recovery program for the West Coast Demersal Scalefish Resource was introduced between late 2007 and early 2010, based on the maintenance of retained catches of demersal species (overall suite and each indicator species) by both the commercial and recreational sectors below 50% of the catches reported in 2005/06 (original catch recovery benchmarks)
Tasmanian scalefish fishery- 2006
2007
Southern calamary Performance indicators • Catch and effort were higher than the reference levels and therefore exceeded reference points for the eighth consecutive year. The Statewide catch of 40 tonnes represented a 65% reduction compared with the previous year and therefore exceeded the rate of change reference point. • Catch rates were within reference levels. Resource status • There is a high degree of uncertainty about stock status. Management advice • Extended closure of the major spawning grounds appears to be effective in protecting the main (known) spawning event. Recent studies have confirmed that Great Oyster Bay represents a significance population source of calamary for southeastern Tasmania and thereby the importance of ensuring high levels of egg production from this region. The fishery for southern calamary expanded markedly in 1998/99 and, reflecting the development of this as a target fishery, subsequent catches have exceeded those for the reference period. After years of generally increasing catches, the 2005/06 catch of 40 tonnes represented a 65% decline compared with 2004/05. Declines in production were reported in all areas, not just those areas subject to the 3-month closure, i.e. Great Oyster Bay and Mercury Passage. The extension of closure to include a larger area of the east coast and changed timing will have contributed to the decline in production in 2005/06, but is unlikely to have been the sole contributing factor. Trends in effort were consistent with the pattern observed for catches. Statewide catch rates also decreased slightly, but were within reference levels during 2005/06.
StatuS of fiSherieS reSourceS in nSW
2011
Preferred way to cite this publication (single species only, example given for Australian Anchovy): rowling, K., a. hegarty and m. ives, eds (2010), australian anchovy, pp 5-6. in Status of fisheries resources in nSW 2008/09. industry & investment nSW, cronulla. iSSn: 1329-4253 © State of new South Wales through industry and investment nSW 2010. you may copy, distribute and otherwise freely deal with this publication for any purpose, provided that you attribute industry and investment nSW as the owner. disclaimer: the information contained in this publication is based on knowledge and understanding at the time of writing (april 2010). however, because of advances in knowledge, users are reminded of the need to ensure that information upon which they rely is up to date and to check currency of the information with the appropriate officer of industry and investment nSW or the user's independent adviser. Summary of the current and target Resource Assessment Classes (RAC) for all key species. © State of new South Wales through nSW department of Primary industries 2008. you may copy, distribute and otherwise freely deal with this publication for any purpose, provided that you attribute nSW department of Primary industries as the owner. disclaimer: the information contained in this publication is based on knowledge and understanding at the time of writing (december 2007). however, because of advances in knowledge, users are reminded of the need to ensure that information upon which they rely is up to date and to check currency of the information with the appropriate officer of new South Wales department of Primary industries or the user's independent adviser.
ICES Journal of Marine Science, 2010
Marriott, R. J., Wise, B., and St John, J. 2011. Historical changes in fishing efficiency in the west coast demersal scalefish fishery, Western Australia: implications for assessment and management. – ICES Journal of Marine Science, 68: 76–86. The west coast demersal scalefish fishery off the southern part of Western Australia has experienced technological creep over the past 20 years, resulting in improved fishing efficiency. The aim of this study was to obtain quantitative measures of efficiency improvements arising from the historical adoption of several important technologies from the surveys of experienced skippers. Survey results suggest that the relatively rapid adoption of Global Positioning Systems from 1989 to 1991 had a large and overriding effect on fleet-wide fishing efficiency. Additive effects from the fleet-wide adoption of colour sounders and hydraulic reels on effective fishing effort and the catch rates of West Australian dhufish (Glaucosoma hebraicum) and pink sn...