Sam Shry
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samshry.bsky.social
Sam Shry
@samshry.bsky.social
920 followers 530 following 5 posts
PhD student at Karlstad University 🇸🇪. Everything telemetry, fish migration, passage solutions, river restoration
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Reposted by Sam Shry
profcolinbean.bsky.social
Life stage-specific marine migration and spatial behaviour of sea trout (Salmo trutta) from two coastal rivers. Journal of Fish Biology, 1–19. doi.org/10.1111/jfb....
Life stage‐specific marine migration and spatial behaviour of sea trout (Salmo trutta) from two coastal rivers
The current study utilised data from acoustic telemetry to assess movement traits important for the conservation of sea trout (Salmo trutta), providing an evidence base for future management of the s...
doi.org
October 14, 2025 at 1:40 PM
Reposted by Sam Shry
nowpas.bsky.social
🐟 CALL FOR ABSTRACTS OPEN for #NoWPaS2026!

📍 Hólar University, Iceland 🇮🇸
📅 March 2–7, 2026
🧑‍🔬 For early career researchers on anadromous salmonids
🗓️ Deadline: Nov 10, 2025
👉 forms.gle/unryb2EZEcp1...
ℹ️ nowpas.wordpress.com

Join us in Iceland for science, salmonids, and connections!
NoWPaS 2026 Application form
NoWPaS (International formerly Nordic Workshop for PhD and Post-Doctoral fellows on Anadromous Salmonid research) is an annual workshop, which aims to build and maintain an international network of ea...
forms.gle
October 13, 2025 at 2:14 PM
Reposted by Sam Shry
jorisphilip.bsky.social
NoWPaS 2026 (International Workshop of PhDs and Post-doctoral Fellows on Anadromous Salmonids) will be organised in Iceland at the Holar University - Call for Abstracts opens Monday, hope to see some familiar faces!
nowpas.wordpress.com
October 7, 2025 at 4:15 PM
Reposted by Sam Shry
daninyqvist.bsky.social
New review paper titled "Balancing hydropower production and ecology - ecological impacts, mitigation measures, and programmatic monitoring" published in KMAE. With @jnaslund.bsky.social and others. Read it here: www.kmae-journal.org/articles/kma...
September 23, 2025 at 4:37 PM
Reposted by Sam Shry
sharkmourier.bsky.social
Our Special Issue on fish telemetry is finally published in Journal of Fish Biology @thefsbi.bsky.social
including 28 papers on freshwater & marine fish movement & behaviour.
Thank all authors and guest editors Taryn Murray, Robert Lennox & Kim Birnie-Gauvin
onlinelibrary.wiley.com/toc/10958649...
May 29, 2025 at 7:31 AM
Reposted by Sam Shry
tabstaveley.bsky.social
New paper showing the distribution and spread of pink salmon in Sweden (fish native to the Pacific Ocean). They are on the edge of entering the Baltic Sea…let’s see what happens during the 2025 migration this summer? #eDNA #fishes #invasive 🧬🐟🇸🇪 doi.org/10.1002/edn3... @evathorstad.bsky.social
Detection of Non‐Native Pink Salmon (Oncorhynchus gorbuscha) in Swedish Rivers Using eDNA
eDNA surveys were conducted in 27 river systems in south-western Sweden in 2023 to detect adult spawning pink salmon. Results indicated, through mainly qPCR methods, the presence of pink salmon at 24...
doi.org
May 20, 2025 at 6:41 PM
Reposted by Sam Shry
aquatictracking.bsky.social
DID SOMEONE SAY CRAB?? 🦀

That's right, the ETN community is tracking more than just fish! Check out the recent article in Movement Ecology about the seaward migration of invasive Chinese mitten crabs. 🎉

Read the paper here: tinyurl.com/36py5z5v

📷: Heleen Keirsebelik
From non-tidal to tidal environments: movement behaviour of Chinese mitten crabs on downstream spawning migration - Movement Ecology
Background The Chinese mitten crab (Eriocheir sinensis) is a widespread species that is both threatened and commercially valuable in its native range, but considered invasive in various other parts of...
movementecologyjournal.biomedcentral.com
May 19, 2025 at 7:03 AM
Reposted by Sam Shry
profcolinbean.bsky.social
Validating Atlantic salmon (Salmo Salar) scale reading by genetic parent assignment and PIT-tagging. PLOS ONE 20(5): e0316075. doi.org/10.1371/jour...
Validating Atlantic salmon (Salmo Salar) scale reading by genetic parent assignment and PIT-tagging
Understanding changes in abundance and survival in Atlantic salmon populations requires knowledge of growth rates and age. Salmon are typically aged through scale reading, but such estimates are rarel...
doi.org
May 13, 2025 at 1:15 PM
Reposted by Sam Shry
mattidcarter.bsky.social
New #OA paper in Movement Ecology using a combination of statistical models (HMMs & GAMMs) to understand environmental drivers of behaviour in Saimaa ringed seals. Very pleased to be invited to collaborate on this research! 🤓🦭 @seamammalresearch.bsky.social @uniuef.bsky.social
tinyurl.com/2uhxez5x
Linking ringed seal foraging behaviour to environmental variability - Movement Ecology
Background Foraging rates directly influence animals’ energetic intake and expenditure and are thus linked to body condition and the ability to survive and reproduce. Further, understanding the underl...
movementecologyjournal.biomedcentral.com
April 25, 2025 at 1:18 PM
Reposted by Sam Shry
jmprok.bsky.social
Postdocs within 5 years of graduation, come to Luke!

One position on fish populations, with amazing @laurauusitalo.bsky.social 🐟🧪

valtiolle.fi/en/jobs/rese...
April 29, 2025 at 3:39 AM
Reposted by Sam Shry
mazeson.bsky.social
Havs- och vattenmyndigheten har beslutat att det från 1 maj blir förbjudet att fritidsfiska ål i Rönne å, från Ringsjöarna och till mynningen i havet vid Ängelholm, i och med att kraftverken kring Klippan har lagts ner
www.havochvatten.se/arkiv/aktuel...
Stopp för fritidsfiske efter ål i Rönne å
Havs- och vattenmyndigheten har beslutat att det från 1 maj blir förbjudet att fritidsfiska ål i Rönne å, från Ringsjöarna och till mynningen i havet vid Ängelholm.
www.havochvatten.se
April 24, 2025 at 8:48 AM
Reposted by Sam Shry
profcolinbean.bsky.social
Effect of internal tagging on egg viability of steelhead, Transactions of the American Fisheries Society, 2025;, vnae011, doi.org/10.1093/tafa...
Effect of internal tagging on egg viability of steelhead
ABSTRACTObjective. Acoustic and radio tagging has been used extensively to study movement patterns of fish in marine and freshwater environments and often
doi.org
April 10, 2025 at 5:36 PM
Reposted by Sam Shry
profcolinbean.bsky.social
Will I stay or will I go? Eye morphology predicts individual migratory propensity in a partial migrant. Journal of Animal Ecology, 00, 1–10. doi.org/10.1111/1365...
Will I stay or will I go? Eye morphology predicts individual migratory propensity in a partial migrant
A multi-year study involving more than 2000 fish individuals across two lake systems revealed that larger pupil size correlates with migration propensity. Computational simulations show that migrants...
doi.org
April 20, 2025 at 8:03 PM
Reposted by Sam Shry
whysharksmatter.bsky.social
Vital Mekong fish corridors tracked for first time, but funding cuts threaten future research
Vital Mekong fish corridors tracked for first time, but funding cuts threaten future research
The first-ever acoustic telemetry network in the Mekong River has tracked key migration corridors critical to the survival of fish in Cambodia and Laos. To conduct the study, researchers caught fish…
news.mongabay.com
April 20, 2025 at 8:16 PM
Reposted by Sam Shry
profcolinbean.bsky.social
mort: An R package to conservatively identify mortalities and shed tags in passive telemetry arrays. Journal of Animal Ecology, 00, 1–13. doi.org/10.1111/1365...
mort: An R package to conservatively identify mortalities and shed tags in passive telemetry arrays
Neglecting to consider mortalities can generate bias in telemetry studies. The R package mort identifies potential mortalities or expelled tags in passive telemetry arrays. Thresholds are derived fro...
doi.org
April 20, 2025 at 7:56 PM
Reposted by Sam Shry
mjw-marine.bsky.social
Great to see our new paper on the impacts of water flow and crest shape on juvenile #eel movement on fish passes now out in the Journal of #Fish #Biology! #openaccess #science #freshwater @zslscience.bsky.social @jack-brand.bsky.social @ucl.ac.uk

onlinelibrary.wiley.com/doi/10.1111/...
Improving eel pass efficiency: The role of crest shape and water flow in facilitating upstream juvenile eel migration
River connectivity is crucial for the European eel (Anguilla anguilla) to complete its complex life cycle, which is vital for upstream recruitment to the declining population of this critically endan...
onlinelibrary.wiley.com
April 11, 2025 at 12:18 PM
Reposted by Sam Shry
jack-brand.bsky.social
Super happy to see our new article on how pharmaceutical pollution can influence salmon migration out in @science.org!

This was a huge effort by a great team of researchers over the last few years!

You can read the paper here: science.org/doi/10.1126/sc…!
April 10, 2025 at 7:12 PM
Reposted by Sam Shry
michaelgbertram.bsky.social
Great to see this piece in @nytimes.com covering our new article in @science.org on the impacts of pharmaceutical pollution on salmon migration

👉 nytimes.com/2025/04/10/c...

👉 science.org/doi/10.1126/...

@jack-brand.bsky.social
April 11, 2025 at 10:17 AM
Reposted by Sam Shry
umeaunimarine.bsky.social
Large field-scale study, showing that pharmaceutical pollution alters behaviour and migration in Atlantic salmon! 🧪🐟💊

www.umu.se/en/news/larg...

@umeauniversitet.bsky.social #SLU
Largest study to date shows pharmaceutical pollution alters migration in Atlantic salmon
Pharmaceutical used for sleep disorders influences the migration success of juvenile salmon in the wild.
www.umu.se
April 11, 2025 at 10:35 AM
Reposted by Sam Shry
gacasselberry.bsky.social
I’m excited to share that the final chapter of my dissertation has been published. We used multiple applications of network analysis to acoustic telemetry data to explore seasonal movements of great hammerhead sharks tagged in the FL Keys. 🧪🦈

doi.org/10.1111/jfb.70039
Migratory patterns and seasonal habitat use of great hammerhead sharks (Sphyrna mokarran) in the southeastern United States
The great hammerhead shark (Sphyrna mokarran) is a highly mobile shark species whose population in the United States declined dramatically through the early 2000s. Their spatial ecology is poorly und...
doi.org
April 7, 2025 at 2:58 PM
Reposted by Sam Shry
limnolog.bsky.social
Most freshwater fish migrate. Here thousands and thousands and thousands of roach, pike, bream and search tries to pass a small dam. Some roach does make it and manages to spawn upstream.
April 9, 2025 at 5:25 AM
Reposted by Sam Shry
larissabeumer.bsky.social
Come study these most adorable - and tough - #Arctic ungulates with us! 🦌 Fully funded 4-year PhD position in Svalbard Reindeer Movement Ecology at The University Centre in #Svalbard: shorturl.at/DaHpw Application deadline is the 25th of April 2025!
March 28, 2025 at 4:04 PM
Reposted by Sam Shry
jacsciart.bsky.social
It feels strange to draw fish right now when the country I live in is seemingly plummeting into authoritarianism. So I drew something else, and today it’s finally done. Federal workers deserve to be treated better, and we need the federal agencies that this administration is so intent on destroying.
An illustration dedicated to federal employees and the federal agencies being targeted by Musk and Trump. The illustration is a circle. The outer band of the circle is navy blue with 50 white stars in a ring. Inside that band is a simplified landscape. There are white clouds (representing the National Weather Service) on the left side that intersect with a simplified mountain range (representing the Bureau of Land Management). Inside of the clouds are bright blue lines that make up the facial profiles of two people, which represent the Department of Health and Human Services. The sky is light blue, and a gull that is reminiscent of the NOAA logo flies just below three stars, meant to represent NASA. The mountains morph into a simplified field. The field is made of bands of light and forest green. These bands represent the USDA. A bison and two pine trees stand in the mid-ground. Both are forest green and stem from the dark green bands of the fields. These two symbols represent the National Park Service and Forestry Service respectively. The aforementioned bands then turn into bright blue waves of water at the bottom of the circle. The outer circle is structured kind of like a coin, giving a nod to the Department of the Treasury logo.
March 20, 2025 at 2:51 PM
Reposted by Sam Shry
rtbecard.bsky.social
New #FishSci #AcousticTelemetry positioning paper: PMC-TOA positioning.

I used adaptive importance sampling & mixture distributions to position fish in environments prone to tag reflections. Mixed with post-processing, this gives great tracks!

doi.org/10.1111/2041...
A comparison of PMC-TOA & CTCRW and YAPS within a case study on smolt migrations. Here, YAPS consistently failed to fully converge and didn't return standard error values (i.e. no confidence ellipses). A comparison of PMC-TOA and TDOA positioning applied to a smolt migration dataset. Positions are post processed with a Kalman filtered CTCRW model. Tag reflections resulted in incoherent tracks for TDOA positioning. Satellite image of the study area where the case study data was collected and which the simulated study was based on. The fishpass and spillway are hard structures and likely culprits for causing the reflected tag transmissions detected across the receiver array.
March 17, 2025 at 10:23 PM
Reposted by Sam Shry
ryansponseller.bsky.social
We are hiring a postdoc at Umeå University in aquatic ecosystem ecology. See the link for details!
www.umu.se/en/work-with...
@grocherros.bsky.social
Postdoc (2 years) in aquatic ecosystem ecology
www.umu.se
March 5, 2025 at 10:21 AM