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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.


Year:
Species:
11 items
Document detail
Title: Plenary (KAH_FINAL 08)
KAH_FINAL 08.pdf (324.9 kb)

 

KAH 1

An assessment was undertaken for KAH 1 in 2007. In the assessment for KAH 1 there was uncertainty

in some important model inputs (e.g., recreational catch history and abundance indices) and some

influential biological parameters could not be estimated within the model (e.g., natural mortality and

the spawner recruitment relationship).

The approach taken to represent uncertainty was to determine the four main factors for which

uncertainty was likely to have an impact on key model outputs (referred to as the ‘axes of

uncertainty’) and then to select a limited number of plausible options across each axis. Model runs

were then undertaken for all possible combinations of options across each axis – this set of options

was referred to as the ‘grid’. Overall, the grid comprised 36 model runs which in totality were thought

to be a realistic reflection of the extent of uncertainty in the KAH 1 assessment.

Based on the scenarios examined, it is likely that current spawning biomass is above B

 

MSY, but it isMSY it is unlikely that the stockMSY at current assumed catch levels, given the model recruitment assumptions.M=0.18 and including all abundance indices were undertaken in

uncertain how far above.

Current assumed removals are lower than

Title: Plenary (KAH_07)
KAH_07.pdf (261.7 kb)
Plenary (KAH_07)
Title: Plenary (KAH_06)
KAH_06.pdf (96.8 kb)
Plenary (KAH_06)
Title: Fisheries Assessment Plenary May 2017: Stock Assessments and Stock Status
36_KAH_2017.pdf (682.9 kb)
<root>&nbsp;<span style="font-family: Arial, sans-serif; font-size: 9.5pt;">The May 2017 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 83 of New Zealand&rsquo;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. KAH</span> <p class="MsoNormal"><o:p></o:p></p> </root>
Title: Fisheries Assessment Plenary May 2016: Stock Assessments and Stock Status
36_KAH_2016_FINAL.pdf (1.4 MB)
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
Title: Fisheries Assessment Plenary May 2015: Stock Assessments and Stock Status
36_KAH_2015_FINAL.pdf (1.5 MB)
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. KAH
Title: Fisheries Assessment Plenary May 2014: Volume 2 Stock Assessment and Stock Status
Fisheries Assessment Plenary May 2014 Volume 2.pdf (25.3 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 2 covers the John Dory to Red Gurnard.
Title: 41_KAH_09
41_KAH_09 .pdf (273.9 kb)
KAH 1
An assessment was undertaken for KAH 1 in 2007. In the assessment for KAH 1 there was uncertainty in some important model inputs (e.g., recreational catch history and abundance indices) and some influential biological parameters could not be estimated within the model (e.g., natural mortality and the spawner recruitment relationship).

The approach taken to represent uncertainty was to determine the four main factors for which uncertainty was likely to have an impact on key model outputs (referred to as the ‘axes of uncertainty’) and then to select a limited number of plausible options across each axis. Model runs were then undertaken for all possible combinations of options across each axis – this set of options was referred to as the ‘grid’. Overall, the grid comprised 36 model runs which in totality were thought to be a realistic reflection of the extent of uncertainty in the KAH 1 assessment.

Based on the scenarios examined, it is Likely that current spawning biomass is above BMSY, but it is uncertain how far above.

Current assumed removals are lower than almost all estimates of deterministic MSY. Combining this with the result that most estimates of current biomass are well above BMSY it is unlikely that the stock will decline below BMSY at current assumed catch levels, given the model recruitment assumptions.

The current TAC for KAH 1 is 3315 t w
Title: Fisheries Assessment Plenary May 2013: Stock Assessments and Yield Estimates
036_KAH_2013.pdf (501.3 kb)
The May 2013 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. Kahawai (KAH).
Title: Fisheries Assessment Plenary May 2014: Stock Assessments and Stock Status. Kahawai (KAH)
36_KAH_2014 FINAL.pdf (614.4 kb)
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. Kahawai (KAH)
Title: Kahawai
41_KAH_2010.pdf (326.6 kb)
This document summarises the most recent New Zealand fishery, biological, stock assessment and stock status information about kahawai.