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MaC-Perez / Hydra-self-testing

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Set M1 for predator species in the operating model at stock assessment estimates #13

Open gavinfay opened 3 weeks ago

gavinfay commented 3 weeks ago

Fix values for M1 for cod and dogfish (case study predators) at the values used in current assessments for those stocks.

gavinfay commented 2 weeks ago

M for GB cod is 0.29, not 0.2

On Mon, Aug 26, 2024 at 2:13 PM Maria Cristina Perez < @.***> wrote:

@gavinfay https://github.com/gavinfay In the stock assessment report M was 0.2 for cod and 0.102 for dogfish so thats what I ma using for predators (M1) and small values of M1 for herring and mackerel (I started with 0.05 for both)

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MaC-Perez commented 2 weeks ago

@gavinfay In the stock assessment report M was 0.29 for cod and 0.102 for dogfish so I started with low values until M was app 0.2 and 0.102 for predators and also close to 0.35 and 0.2 for herring and mackerel (all these values taken from stock assessment reports). fixed OF value of 23

M1+M2 plot

image

gavinfay commented 2 weeks ago

OK, but you need to show how you got here, not just the end result. We wanted to look at how M changed as a function of M1 and OF. As discussed, make sure you know what a OF value of 23 means? Is this plausible? It doesn't look like you have very much species interaction here (M for your prey species are only varying by ~0.001 over the time series) - likely because your other food is gigantic.