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pbs-assess / gfmpa

Analysis of closed areas impact on survey indices
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Examples/stories for species #20

Closed seananderson closed 1 year ago

seananderson commented 1 year ago

Darkblotched in WCHG

MPA restriction occasionally misses large sets on west coast:

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Results in some years being 'off':

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Hence increased MARE, but little impact on trend:

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seananderson commented 1 year ago

China rockfish in HBLL N

Misses a large proportion of the biggest tows in 2006. Also, look at trend of rank order set sizes over time?

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Results in a trend in RE. Also, a trend in RE by definition results in higher MARE.

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seananderson commented 1 year ago

Pacific ocean perch WCHG

Commercially important, trawl fished, only well sampled by trawl survey.

Restriction takes out major portions of abundance from survey domain.

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Major impact on CV (50%), ballpark 10% MARE, minor impact on trend. Look at assessment and weight of survey in model. Plot of index with CIs of the two versions?