Yeah this report was split between me doing research into feed fortification in India and George doing research into DO in Taiwan.
That’s a good question, I don’t think it was intentional—probably just the way we both went about modelling things. But I will leave George to answer that properly as to why he used log-normal.
I’ve slowly been updating towards lower expected WP returns to improved DO based on conversations I have had with Fish Welfare Initiative. It seem likely that more fish are in the lower end of welfare benefit for DO optimization because of the natural incentives that exist for farmers in regards to DO. Low DO levels increase mortality and fluctuation in air pressure can cause DO to plummet so farmers often use extra buffer. Therefore any fish suffering −40 WP from DO levels alone would probably die , I think log-normal best captures this. Thanks for pointing this out as i did not make it explicit in the report.
Yeah this report was split between me doing research into feed fortification in India and George doing research into DO in Taiwan.
That’s a good question, I don’t think it was intentional—probably just the way we both went about modelling things. But I will leave George to answer that properly as to why he used log-normal.
I’ve slowly been updating towards lower expected WP returns to improved DO based on conversations I have had with Fish Welfare Initiative. It seem likely that more fish are in the lower end of welfare benefit for DO optimization because of the natural incentives that exist for farmers in regards to DO. Low DO levels increase mortality and fluctuation in air pressure can cause DO to plummet so farmers often use extra buffer. Therefore any fish suffering −40 WP from DO levels alone would probably die , I think log-normal best captures this. Thanks for pointing this out as i did not make it explicit in the report.