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Plenary (SKI_FINAL 08)
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Plenary (SKI_07)
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Plenary (SKI_06)
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Title: Fisheries Assessment Plenary May 2017: Stock Assessments and Stock Status
24_SKI_2017.pdf
(529.0 kb)
The May 2017 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 83 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. SKI
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Title: Fisheries Assessment Plenary May 2016: Stock Assessments and Stock Status
24_SKI_2016_FINAL.pdf
(499.2 kb)
The May 2016 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 83 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. SKI
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Title: Fisheries Assessment Plenary May 2015: Stock Assessments and Stock Status
24_SKI_2015_FINAL.pdf
(870.9 kb)
The May 2015 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 82 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. SKI
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The May 2014 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 82 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. Volume 1 covers the Introductory Sections to Jack Mackerel.
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Title: Fisheries Assessment Plenary November 2013: Stock Assessments and Yield Estimates
017_SKJ_November_2013.pdf
(645.9 kb)
The November 2013 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 19 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. Skipjack Tuna (SKJ).
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The mid-year November 2012 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. The November Plenary includes Working Group and Plenary summaries for species that operate on different management cycles to those summarised in the May Plenary Report. It includes Highly Migratory Species (HMS), rock lobster, scallops and dredge oysters, covering 17 species in total.
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A new stock assessment was completed for SKI 1 & 2 in 2008.
SKI 1 & 2
Virgin and current biomass for the northern gemfish stock were estimated assuming one stock (SKI 1 & 2). Year class strengths from 1989 to 2000 appear to have been low, except for one strong cohort in 1991. Three alternative model runs were presented, all using the assumption that the commercial CPUE data are relative abundance indices up to 2001, but only using catch and catch at age data since 2001. The first model estimated the stock size (B2006) to be about 32% of B0 assuming recruitment since 2000 has been at the long-term average level. The second model assumed that recruitment has been at the long-term average level since 2001 and estimated the stock size (B2006) to be 26% of B0. The final model incorporated new catch at age (from 2007) and estimated individual year class strength up to 2003. This model estimated that current biomass (B2007) was about 22% of B0. For all three models, projections at the current TACC levels suggest the stock may increase with average recruitment (long term mean from 1978 to 2000), but is likely to decline if recruitment remains at the levels seen in more recent years (from 1992 to 2000).
SKI 3 & 7
The assessment of the southern gemfish stock has not been updated since 1997. Landings from SKI 7 increased from 2000 to be a level over twice the TACC in 2004–05, but have decreased since then.
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Title: Fisheries Assessment Plenary, November 2015: stock assessments and stock status.
14-SKJ_2015_FINAL.pdf
(1.1 MB)
The November 2015 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 16 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Volume 2 covers Rock lobster to Yellowfin tuna.
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This document summarises the most recent New Zealand fishery, biological, stock assessment and stock status information about gemfish.
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