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Three years ago I was given the opportunity to use
@saildrone to fill a gap in a fisheries survey time series in the #Pacific #Arctic.
I'm happy to announce our work using these surveys to understand Arctic fish populations is finally out (a short
)! https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.11671
@saildrone to fill a gap in a fisheries survey time series in the #Pacific #Arctic.
I'm happy to announce our work using these surveys to understand Arctic fish populations is finally out (a short
)! https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.11671
This was supposed to be a side project to collect some data I *might* use, and instead became the foundation of my dissertation.
In the Chukchi, folks had previously found a TON of baby Arctic cod but no adults. We're trying to find out where they came from and where they go
In the Chukchi, folks had previously found a TON of baby Arctic cod but no adults. We're trying to find out where they came from and where they go
We had 2 saildrones run acoustic surveys for 90 days on the Chukchi shelf. Because saildrones can just run acoustic lines forever, we ended up conducting 2 full surveys plus 2 extra mini-surveys where we saw the most fish.
The whole population didn't move over the summer like we thought, but from the acoustics we were able to infer size and see that they were growing. They also, as these fish tend to do as they grow, swam deeper during the day to avoid being eaten.
But why are they sticking around and growing in place? So we turned to the models! It turns out because they're so small, they're at the whim of the currents, and in 2018, sloshed back and forth for a while
This retention we see in 2018 may be pretty similar to status quo, which means that this area is being used as a nursery.
But climate change = changing currents = less time for the age-0 fish to get big before they end up off the shelf and winter comes
But climate change = changing currents = less time for the age-0 fish to get big before they end up off the shelf and winter comes
And the coolest part of using the saildrones to do the surveying was that we were able to collect all of this data without having to be there (I was actually on an entirely different research cruise while this was happening)
This became a bigger project than expected, which meant I got to work with a lot of great mentors through @NPRBarctic at @UWOcean, @UAFcfos, @NOAAFisheriesAK, and #PMEL
Looking forward to continuing to work with all of these great folks as we continue to build this story
Looking forward to continuing to work with all of these great folks as we continue to build this story
One final thought I should have added earlier, in the spirit of true OA publishing, all of the analyses can be found on GitHub, from my (not so pretty) @Echoview scripting to the final figures used in the paper: https://github.com/leviner/saildrone-2018
