@HelgeBjerck

PhD Student at Nord University; Salmon, Genomics, Aquaculture, Ecology, Evolution, Behavior, all the fiddly bits inbetween

 Bodø
Joined January 2018
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  • Followers73
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This war is a pretty good illustration of why the power to declare war lies with Congress.
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Scientific papers should enter the public domain way sooner. Why do we accept that journals paywall decades-old articles?
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Good to see this paper finally out: doi.org/10.1186/s40317-024-0… Great baseline data on depth use of migrating salmon smolts in fjords! Key takeaway: smolts predominately migrate in the top 3 meters of the water column throughout the fjord.

Depth use of wild Atlantic salmon post-smolts migrating through fjords

Animal Biotelemetry - Juvenile Atlantic salmon (Salmo salar), known as post-smolt as they enter the sea, undergo an arduous migration from their natal rivers to their feeding grounds in the North...

link.springer.com
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I am unilaterally calling for a boycott on all jackets that do not have inside pockets. It is unacceptable for so-called "designers" to make coats with such callous disregard for the user experience. #bethechangeyouwanttoseeintheworld
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NEW PAPER ALERT: ever wish your passive receiver network was a little more, well, active? Alberto Dallolio, Jo Arve Alfredsen, and crew at NTNU's Department of Cybernetics are on the case. frontiersin.org/articles/10.… (1/5)

Frontiers | A Persistent Sea-Going Platform for Robotic Fish Telemetry Using a Wave-Propelled USV:...

Over the last few decades, acoustic fish telemetry has developed into a viable approach for remote monitoring of fish behaviour in the marine environment. Si...

frontiersin.org
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Active receivers like these can help to extend receiver arrays into the wide open spaces otherwise unsuited for acoustic telemetry and help to answer questions about route choice, etc. (4/5)
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Next step: get a fleet of these, triangulate the position of the fish in real-time, and follow it as far as we can! #trackingnotslacking #fishtelemetry (5/5)
Fresh off the press! My first paper: rdcu.be/cheyX We used #acoustictelemetry to monitor the migration through the fjord of salmon smolts from four populations with similar hydrology, all located deep within the fjords of western Norway (1/5) #trackingnotslacking
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If the modes of migration timing in these rivers can be predicted from environmental data that is monitored in real time by @NVE, then it may be possible to provide real time estimates to eg aquaculture companies or research institutions on when these smolts are in the fjord(4/5)
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Further, as the # of sea lice in the fjord varies a lot through the season, this within-pop variation in migration timing has become much more important. We offer some hypotheses as to which ecological/physiological/evolutionary factors may be causing this multimodality. (5/5)
Two professor positions available at Nord University! jobbnorge.no//en/available-j…
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This seems like something that could be a game changer for acoustic telemetry? Could take a while to miniaturize the tech for transmitters, but battery-free receivers should make it much easier to run larger receiver arrays. economist.com/science-and-te…
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wow, working with GIS would be much easier if the world was flat
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Helge Bostwick Bjerck retweeted
Richard Iannone@riannone8 Apr 2020
The first release of the gt package (v0.2) is now available in CRAN! This RStudio blog post (blog.rstudio.com/2020/04/08/…) explains what the package is all about (making great looking tables) and how to get started. #rstats #gt_tables
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Does anybody know about any papers discussing how salmon perceive different light levels? At the latitude of our study site, twilight lasts a really long time. How little light does there need to be for a salmon to consider it night?
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