Assessment approach for commercial fish Lena Bergstrm GEAR 23 May - - PowerPoint PPT Presentation

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Nov 02, 2022 175 likes •240 views

Assessment approach for commercial fish Lena Bergstrm GEAR 23 May 2017 Name 5/23/2017 Surname 1 ISSUE Solutions Unclarity about how the average was calculated Method clarified in the text. Best way of computing assessment values were

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Assessment approach for commercial fish

Lena Bergström

GEAR 23 May 2017

Name Surname 5/23/2017 1

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Name Surname 5/23/2017 2

ISSUE Solutions

Unclarity about how the average was calculated Best way of computing assessment values were considered *Current way: Average over the assessment years (+) Reflect the situation during 2011-2015 (+) reduced probability of erroneous results for stocks that are managed close to the reference level *Alternative way: Last assessment year (+) follow the most recent fisheries advice (-) will not reflect the situation during 2011-2015, only the situation during 201 * Alternative way: Majority rule (+) transparent (-) difficult to summarize in a short way (but doable) Question was also raised to EU Com at the meeting Method clarified in the text. Until more specific guidance is available, the current way was kept, to average over the assessment years + Clarify that ICES updated advice on MSFD will be followed when available A fish drafting group consisting of SE, PL, DE revised text

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ISSUE Solutions

Inconsistent results for chapter 4.6 (extraction of species – fishing) and chapter 5.3 (biodiversity) Question was also raised to EU Com at the meeting In chapter 4 (”D3” both F and SSB are considered For good status, both values need to achieve the threshold value, separately for each stock The same assessment results were use in chapter 5 (“D1”) in order to have comparable results between the two chapters Texts were updated After the meeting, the integrated assessment for the

pen sea fish using the BEAT tool has been redone

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Previuos map New map

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New results by species group

ICES SD Integrated score Demersal Pelagic 21 0.43 0.45 22 0.33 0.30 23 0.33 0.30 24 0.15 0.30 25 0.53 26 0.53 27 0.53 28 0.53 28.1 0.30 29 0.53 30 0.43 31 0.15 32 0.53

Species included

ICES SD Species Demersal Pelagic 21plaice, sole herring 22cod, plaice, sole herring, sprat 23cod, plaice, sole herring, sprat 24cod, sole herring, sprat 25 herring, sprat 26 herring, sprat 27 herring, sprat 28 herring, sprat 28.1 herring, sprat 29 herring, sprat 30 herring, sprat 31 Sprat 32 herring, sprat

Shifted from green to red: Sprat, Herring 28.1 Lowered input data (still green): Herring 30, Plaice