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Stock assessment plenary

The Plenary Report summarises biological, fishery, stock assessment and stock status information for 80 species or species groups, each of which is split into 1-10 stocks. The Plenary takes into account the most recent data and analyses available to Fisheries Assessment Working Groups (FAWGs) and the Fisheries Assessment Plenary and also incorporates relevant analyses undertaken in previous years.

This page enables you to search through all plenary reports since 2006.

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Title: Plenary (GMU_FINAL 08) GMU_FINAL 08.pdf (215.2 kb) Grey mullet have been exploited by customary, commercial, and recreational fishers for over 100 years. They are found predominantly in harbours and these environments have undergone considerable change over this period due to a range of anthropogenic sources. The impact of these changes on potential carrying capacity and productivity are not understood and this potentially has impacts on the yields for GMU. GMU 1 is currently assessed using CPUE data and these analyses suggest that the GMU 1 fishery is composed of a number of spatially distinct substocks and tagging data suggest low to moderate mixing between them. CPUE analyses undertaken using data through to 2001-02 led the Inshore FAWG to conclude in 2005 that catches on the west coast of GMU 1 were unlikely to be sustainable. Updated CPUE analyses using data up to 2005–06 have found that the CPUE in the Kaipara Harbour, Manukau Harbour, and east Northland (which collectively account for over 80% of the GMU 1 catch) have increased since 2002. Therefore catches in these areas appear to be sustainable in the short term. It is not known if the recent catches will allow the sub-stocks to move toward a size that will support the MSY.
Title: Plenary (GMU_07) GMU_07.pdf (132.4 kb) Plenary (GMU_07)
Title: Plenary (GMU_06) GMU_06.pdf (71.1 kb) Plenary (GMU_06)
Title: Fisheries Assessment Plenary May 2017: Stock Assessments and Stock Status 29_GMU_2017.pdf (468.1 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. GMU
Title: Fisheries Assessment Plenary May 2016: Stock Assessments and Stock Status 29_GMU_2016_FINAL.pdf (463.4 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. GMU
Title: Fisheries Assessment Plenary May 2015: Stock Assessments and Stock Status 29_GMU_2015_FINAL.pdf (457.6 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. GMU
Title: Fisheries Assessment Plenary May 2014: Volume 1 Stock Assessments and Stock Status Fisheries Assessment Plenary May 2014 Volume 1.pdf (24.2 MB) 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.
Title: 34_GMU_09 34_GMU_09.pdf (203.9 kb) Grey mullet have been exploited by customary, commercial, and recreational fishers for over 100 years. They are found predominantly in harbours and these environments have undergone considerable change over this period due to a range of anthropogenic sources. The impact of these changes on potential carrying capacity and productivity are not understood and this potentially has impacts on the yields for GMU. GMU 1 is currently assessed using CPUE data and these analyses suggest that the GMU 1 fishery is composed of a number of spatially distinct substocks and tagging data suggest low to moderate mixing between them. CPUE analyses using data up to 2005–06 have found that the CPUE in the Kaipara Harbour, Manukau Harbour, and east Northland (which collectively account for over 80% of the GMU 1 catch) have increased since 2002. Therefore catches in these areas appear to be sustainable in the short-term. The status of GMU1 relative to BMSY is unknown.
Title: Grey mullet 34_GMU_2010.pdf (212.4 kb) This document summarises the most recent New Zealand fishery, biological, stock assessment and stock status information about grey mullet.