Environmental data

[brianlangseth-NOAA]

At the end of section 1.3 Ecosystem Considerations the 2015 assessment stated

"Much research is currently underway to explore these phenomena [lingcod predation on young canary, effect of PDO on canary productivity, 1999 recruitment pulse across many species], and it appears likely that more explicit exploration of ecosystem processes and influences may be possible in future canary rockfish stock assessments."

Probably should figure out how much of the research is not complete

[okenk]

A bunch of lingcod diet data have been collected since the last assessment, they really only can get down to genus, or maybe even family, as I recall. I am somewhat skeptical of their utility in assessments since predator-prey relationships can take on many different forms all leading to very different dynamics. I do have the raw data.

@ericward-noaa was working on some multispecies stuff based on historical rec devs, not sure its current status? I don't think any work has been done explicitly on canary.

[brianlangseth-NOAA]

Bell et al 2023 foudn that for cnaary a time-invariant stock recruitment relationship fit the data better than a time-varying stock recruitment relationship. However, they found that short term forecasts were improved if a directional drift or a PDO index on recruits was included for productivity.

Some notes (may 3 2023 agenda) and take home points (may 10 2023 agenda) can be found on the assessment teams meeting agenda page