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Plenary (BNS_FINAL 08)
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Plenary (BNS_07)
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Plenary (BNS_06)
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Title: Fisheries Assessment Plenary May 2017: Stock Assessments and Stock Status
12_BNS_2017.pdf
(1.8 MB)
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. BNS
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Title: Fisheries Assessment Plenary May 2016: Stock Assessments and Stock Status
12_BNS_2016_FINAL.pdf
(1.8 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. BNS
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Title: Fisheries Assessment Plenary May 2015: Stock Assessments and Stock Status
12_BNS_2015_Final.pdf
(1.1 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. BNS
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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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CPUE has previously not been considered to be a reliable indicator of abundance of BNS stocks. However, close coincidence observed in declining trends in most CPUE indices in recent years has increased confidence in their value as indices. Standardised CPUE series, based on data from six fisheries which span most of major fisheries taking BNS in the NZ EEZ, have declined an average of 64% over the period 2001–02 to 2006–07 (Table 3).
If this decline is indicative of the overall abundance of bluenose in these areas, then BNS abundance could have declined by more than 50% across all areas over these six years. If there has been replenishment of the features being fished in the period prior to the decline, the overall decline in abundance could be even larger. Although factors other than abundance may have contributed to the declines in CPUE and catches, current BNS catches and TACCs do not appear to be sustainable.
There is currently no stock assessment available for any BNS stock to allow estimation of BMSY and BCURR. Further, uncertainty regarding the extent of the stock which is contributing to the bluenose fisheries in the various QMAs makes it difficult to estimate BMSY for these stocks. The current status of the bluenose populations in each of the BNS QMAs relative to BMSY is unknown.
The concurrent decline of six independent CPUE series covering all the main NZ EEZ bluenose fisheries may indicate that there i
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This document summarises the most recent New Zealand fishery, biological, stock assessment and stock status information about bluenose.
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