Interesting new paper on differential mortality of wild and hatchery origin #Atlantic #salmon smolts 🧪 "Hatchery smolts exhibited significantly lower survival during river outmigration, with a third dying before reaching lower river sections" doi.org/10.1111/jfb....

Tracking hatchery and wild Atlantic salmon (<fi>Salmo salar</fi>) smolt during river exit and early marine migration to assess survival, predation risk and migration speed

Significant declines in Atlantic salmon (Salmo salar) populations across their range have prompted an increased use of hatchery supplementation programmes to support population recovery. However, con...

doi.org

Brown trout populations are hard to assess due to their phenotypic plasticity, with life history strategies ranging from resident to anadromous (sea trout). Our latest paper provides a new assessment method for Scotland, based on juvenile electrofishing data. onlinelibrary.wiley.com/doi/10.1111/...

What *actually* works — right here, right now — to address climate change? Here you go. This is the result of thousands of hours of painstaking research and analysis from the Project Drawdown team.

I’m not saying the debate in the U.K. has moved to the right, but Ed Miliband is basically seen as Pol Pot for aiming for a climate target first agreed to by…I think Theresa May’s government? Definitely Johnson’s. And this chat is going on during the middle of a record-breaking heatwave

Selection against dispersers: sex, age and origin-dependent fitness differences in wild Atlantic salmon doi.org/10.1098/rspb...

Selection against dispersers: sex, age and origin-dependent fitness differences in wild Atlantic salmon

Abstract. Local adaptation is often portrayed as uniform fitness disadvantages of immigrants relative to locals. Yet dispersal costs vary with origin, sex

doi.org

www.frontiersin.org/journals/eco... 🧪

Frontiers | Marine and freshwater challenges to recovery efforts in an endangered Atlantic salmon population

Anadromous Atlantic salmon populations have experienced significant reductions in their global range. In the US, the endangered Gulf of Maine Distinct Popula...

frontiersin.org

New paper on the potential effects of climate change and shrubification on river temperature in tundra environments. Where are temperatures likely to change most and how are underlying processes affected? 🧪 agupubs.onlinelibrary.wiley.com/share/QKHDEU...

Provisional Atlantic #salmon catch statistics are out for Scotland. 2025 catches are likely to have been affected by extremely low summer flows. Nevertheless looking like a very poor year and possibly the worst recorded. www.gov.scot/publications... 🧪

Scottish salmon and sea trout fisheries: provisional statistics 2025

Provisional data on the number and weight of fish from Scottish salmon and sea trout fisheries.

gov.scot

The Girnock & Baddoch index sites on Aberdeenshire Dee, Scotland, support some of the longest, most detailed salmon population datasets available. Latest data here. Flow affects inter-annual variability in female numbers, declining return rate drives trends. 🧪 www.gov.scot/binaries/con...

New study: As lice pressure increased, the specific growth rate of returning fish declined. "Wild-origin fish had a greater return rate than hatchery-origin fish at all levels of lice infestation pressure, with the difference increasing with increasing pressure" academic.oup.com/icesjms/arti...

#Northumberland coast, blow away the cobwebs and clear the mind.

Dark forces are preventing us fighting the climate crisis – by taking knowledge hostage | George Monbiot www.theguardian.com/commentisfre...

Dark forces are preventing us fighting the climate crisis – by taking knowledge hostage | George Monbiot

The fundamental problem is this: that most of the means of communication are owned or influenced by the very rich, says Guardian columnist George Monbiot

theguardian.com

Transfer of genetic material from domesticated to wild salmon populations through fish farm escapes & interbreeding, is a significant risk to wild salmon populations. Identifying this pressure in wild populations requires the use of informative markers. New paper link.springer.com/article/10.1...

Material Video archive — Reykjavík, Iceland

Archive of videos from the Material Conference — Reykjavík, Iceland — by Joschi Kuphal & Brian Suda

material.is

We do not have deliberate and politically driven reductions in long-term govt. science programmes in the UK. Nevertheless, budgetary constraints and a requirement to focus on immediate policy and regulatory data requirements are affecting the freswater data landscape nonetheless.

Nature Portfolio@natureportfolio.nature.com · 9mo ago

From NASA to the National Institutes of Health, federal agencies conduct research that universities cannot. Agency scientists speak with Nature about the irreplaceable facilities, institutional knowledge, and training opportunities that the country is losing. 🧪

From NASA to the National Institutes of Health, federal agencies conduct research that universities cannot. Agency scientists speak with Nature about the irreplaceable facilities, institutional knowledge, and training opportunities that the country is losing. 🧪

Insiders warn how dismantling federal agencies could put science at risk

From NASA to the National Institutes of Health, federal agencies conduct research that universities cannot. Agency scientists speak out about the irreplaceable facilities, institutional knowledge and training opportunities that the country is losing.

go.nature.com

I’m delighted to share that our latest research has just been published in HESS. We developed an unsupervised workflow to estimate river surface velocities from videos. Testing on 11,000+ videos against 274 gauging measurements showed excellent agreement. hess.copernicus.org/articles/29/...

Unsupervised image velocimetry for automated computation of river flow velocities

Abstract. Accurate, long-term measurements of river flow are imperative for understanding and predicting a broad range of fluvial processes. Modern technological advances are enabling the development ...

hess.copernicus.org

New paper on effects of captive rearing of Atlantic salmon on body morphology in context of stocking "Humanity often tries to engineer its way out of environmental crises. But nature isn’t easily replaced. Sometimes, the best solution is to give it the space to recover on its own" bit.ly/4oykzmy

Wild salmon are the Zendayas of the fish world – what that tells us about conservation

Wild salmon look incredibly symmetrical but captivity makes them more lopsided, stressed and less able to survive in the wild.

theconversation.com

A fantastic job opportunity for someone to work at the interface between Atlantic salmon habitat modelling and management. Cutting edge research as part of an excellent project team.

Normand Bergeron@normandsky.bsky.social · last yr.

Postdoc offer : Remote sensing modeler of Atlantic salmon river habitat suitability We are looking for a resourcefull person with cross-over expertises in remote sensing (Lidar and satellite imagery), programming, wildlife habitat modelling... and ideally hydraulic modelling and AI. ;-)

New recommendations for water regulation in England and Wales. In Scotland of course the water industry is publicly owned through Scottish Water.

The Guardian@theguardian.com · last yr.

New ‘integrated regulator’ should replace Ofwat and drive ‘fundamental reform’ of the water sector, review finds – business live

1. Accurate (unbiased and precise) quality controlled data are essential for understanding and monitoring trends in river temperature. However, researchers often collate and analyse data without consideration of these issues. A new 📜 & summary🧵 onlinelibrary.wiley.com/doi/10.1002/...

The Influence of Equipment Bias on Reported Temperature Trends: Implications for River Temperature Monitoring Networks

River temperature is an important control on ecosystem health. Concerns around climate change impacts and availability of lower cost sensors have led to an increase in temperature monitoring of aquat....

onlinelibrary.wiley.com

Do poor growth conditions at sea result in salmon returning to rivers to spawn at a younger or older age? New study shows that that rapid growth can lead to later maturation but maturation age can be influenced by shifts in growth during the marine migration link.springer.com/article/10.1... 🐟

1. Are you interested in assessing the status of Atlantic #salmon and brown #trout populations using electrofishing data? If so then this 🧵 is likely to be of interest to you. The latest report from the National Electrofishing Programme for Scotland #NEPS was published this week bit.ly/4jNrXH6 🧪🌎

Up above Loch Tummel. Time to go hunt for that pot of gold.

Islay, distillery tour by bike. Time well spent in good company

River temperature forecasts are likely to be required to inform fisheries management decisions under a rapidly changing climate. Interesting new paper: hess.copernicus.org/articles/29/...

Extended-range forecasting of stream water temperature with deep-learning models

Abstract. Stream water temperatures influence water quality, with effects on aquatic biodiversity, drinking-water provision, electricity production, agriculture, and recreation. Therefore, stakeholder...

hess.copernicus.org

Craster to Seahouses #Northumberland

Protection & creation of riparian woodland is one of the few management options available to mitigate river temperature increases under climate change. "riparian buffers wider than 15 m protected against water temperature increases..." agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Another day on the Northumberland coast😁

Why the hell doesn't Starmer do this about Farage...

Ryan@ryanwright.bsky.social · last yr.

This is leadership. Prime Minister Justin Trudeau in his final days in office asks Canadians to ask WHY. Why does the leader of Canada’s conservatives REFUSE to get security clearance? Why does he REFUSE to put Canadians first? It isn’t a slogan when it’s not backed up. It’s a lie. #cdnpoli

Unwinding on the Northumberland coast. Beach walks, dogs, beer, food. Is there a better tonic?