iiinova — where your digital self keeps evolving

Iain A Malcolm @iainamalcolm.bsky.social · 06/08/2026

Escaped farmed #Atlantic #salmon can breed with wild populations with negative consequences for fitness. New paper assesses national & regional introgression pressures, integrating SNP marker panel, statistical survey of juveniles (NEPS) and novel stats approach 🧪🌏 academic.oup.com/icesjms/arti...

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Iain A Malcolm @iainamalcolm.bsky.social · 06/08/2026

A topologically correct Digital River River Network (DRN) underpins many statistical analyses. When landscape characteristics are added DRNs can support river temperature & ecological models. New open access DRN for Europe. Take a bow Andrew French & Phil McGinnity 👏🏻 zenodo.org/records/1436... 🧪🌏

zenodo.org

AMBER salmon: A digital river network containing reach-specific habitat variables related to the North-East Atlantic distribution of Atlantic salmon (Salmo salar)

Summary This dataset was collated through an offshoot of the AMBER project. One of the aims of AMBER was to evaluate the merits of different restoration actions proposed to reconnect Europe’s fragment...

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Iain A Malcolm @iainamalcolm.bsky.social · 25/07/2026

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/...

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Dr. Jonathan Foley @globalecoguy.bsky.social · 28/06/2026

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.

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Twlldun @twlldun.bsky.social · 25/06/2026

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

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Iain A Malcolm @iainamalcolm.bsky.social · 09/06/2026

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...

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Iain A Malcolm @iainamalcolm.bsky.social · 27/02/2026

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... 🧪

gov.scot

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.

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Iain A Malcolm @iainamalcolm.bsky.social · 01/02/2026

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...

gov.scot

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Iain A Malcolm @iainamalcolm.bsky.social · 01/02/2026

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...

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Iain A Malcolm @iainamalcolm.bsky.social · 26/11/2025

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

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Iain A Malcolm @iainamalcolm.bsky.social · 14/11/2025

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.is

Material Video archive — Reykjavík, Iceland

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

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Iain A Malcolm @iainamalcolm.bsky.social · 09/11/2025

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.

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Nature Portfolio @natureportfolio.nature.com · 08/11/2025

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. 🧪

go.nature.com

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.

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CatchmentSci @catchmentsci.bsky.social · 14/08/2025

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/...

hess.copernicus.org

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 ...

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Iain A Malcolm @iainamalcolm.bsky.social · 14/08/2025

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

theconversation.com

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.

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Iain A Malcolm @iainamalcolm.bsky.social · 28/07/2025

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.

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Iain A Malcolm @iainamalcolm.bsky.social · 21/07/2025

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

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Iain A Malcolm @iainamalcolm.bsky.social · 19/07/2025

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/...

onlinelibrary.wiley.com

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....

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Eva B. Thorstad @evathorstad.bsky.social · 22/06/2025

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... 🐟

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Iain A Malcolm @iainamalcolm.bsky.social · 13/06/2025

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 🧪🌎

Two people sampling fish in a small upland stream in Scotland using a traditional electrofishing backpack. One person carries the equipment and holds an anode and a hand net. The second person carries a net and bucket to help capture and hold fish that are caught.

Image showing front cover of the NEPS 2023 report

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Iain A Malcolm @iainamalcolm.bsky.social · 27/04/2025

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

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Iain A Malcolm @iainamalcolm.bsky.social · 15/04/2025

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

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Iain A Malcolm @iainamalcolm.bsky.social · 12/03/2025

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/...

agupubs.onlinelibrary.wiley.com

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Iain A Malcolm @iainamalcolm.bsky.social · 09/03/2025

Another day on the Northumberland coast😁

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Atul Haria (immigrant) @atulharia.bsky.social · 09/03/2025

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

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Iain A Malcolm @iainamalcolm.bsky.social · 07/03/2025

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

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Iain A Malcolm @iainamalcolm.bsky.social · 02/03/2025

"...we provide an updated global assessment of farmed salmon escape policies. Our findings reveal a rapid rise in the spread & implementation of escape regulations globally & the development of new technologies that aim to address this problem. www.sciencedirect.com/science/arti...

sciencedirect.com

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UK Centre for Ecology & Hydrology (UKCEH) @ukceh.bsky.social · 18/02/2025

An improvement in freshwater biodiversity in England's rivers in the 1990s and early 2000s was linked to reduced zinc and copper pollution as coal use and heavy industry declined, say researchers. Read more about a new UKCEH-led study: www.ceh.ac.uk/press/biodiv... #rivers #WaterQuality 🧪 1/

ceh.ac.uk

Biodiversity in England’s rivers improved as metal pollution reduced

An improvement in freshwater biodiversity in England’s rivers was linked to reductions in pollution of zinc and copper, largely due to the decline of coal burning and heavy industry, according to a st...

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Iain A Malcolm @iainamalcolm.bsky.social · 18/02/2025

It can be challenging to design and implement freshwater fish assessment methods at international scales due to differences in sampling methodologies and habitat characterisation. Here we consider opportunities to harmonise data to inform sea trout assessments doi.org/10.1002/aqc....

doi.org

Spatial Variability in Juvenile Sea Trout Data Collection and Assessment Methods Across Europe: Limitations and Opportunities for Standardising Analyses

Brown trout (Salmo trutta L.) is a widely distributed fish species native to Europe, with high phenotypic plasticity, including resident and anadromous (sea trout) forms. Many populations are in decl...

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Iain A Malcolm @iainamalcolm.bsky.social · 15/02/2025

Juvenile chinook dispersal patterns identified through genetics "temperature was a dominant driver of dispersal, with individuals originating from warmer sections of the mainstem typically moving to cooler mainstem sections or tributaries" movementecologyjournal.biomedcentral.com/articles/10....

movementecologyjournal.biomedcentral.com

Watershed-scale dispersal patterns of juvenile Chinook Salmon (Oncorhynchus tshawytscha) revealed through genetic parentage analysis - Movement Ecology

Background For many aquatic taxa, juvenile dispersal from spawning locations to rearing habitats is a critical process influencing individual fitness and population dynamics. However, our understandin...

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Stephan Lewandowsky @lewan.uk · 09/02/2025

The Lancet, considered by some to be the world's leading medical journal (no, it is not a radical-Marxist-left-wing-rag), is living up to its well-deserved reputation and is not mincing words about the Musk administration's actions and their consequences: www.thelancet.com/journals/lan...

thelancet.com

American chaos: standing up for health and medicine

Withdrawal from WHO and the Paris Agreements. USAID shuttered and aid halted, ceasing health programmes globally. A freeze on US$3 trillion worth of federal grants and loans, jeopardising the function...

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Iain A Malcolm @iainamalcolm.bsky.social · 02/02/2025

"...predicted dispersal patterns can carry significant uncertainties, arising from factors such as the accuracy of the driving hydrodynamics, PTM resolution, stochasticity of dispersal simulations, & parameterisation of the behavioural characteristics of the particles" doi.org/10.1016/j.ec...

doi.org

Redirecting

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Iain A Malcolm @iainamalcolm.bsky.social · 30/01/2025

Wild Atlantic #salmon populations are in decline across their native range. In Scotland, "spring" stocks are of particular concern. Understanding population processes & drivers of change can inform management action. Detailed long-term monitoring provides these insights tinyurl.com/Girnock-and-...

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Nature Reviews Biodiversity @natrevbiodiv.nature.com · 21/01/2025

A Review from Haase et al summarizes freshwater conservation efficacy. Freshwater conservation appears to have lower frequency of positive outcomes compared to marine and terrestrial conservation. The authors offer insights for improvement in the future! go.nature.com/4h4oKm1

Distribution and proportion of the nine conservation action categories across 26 regions.

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Iain A Malcolm @iainamalcolm.bsky.social · 25/01/2025

Characterising spatially and temporally heterogeneous groundwater and hyporheic exchange processes is extremely challenging. As a result these processes are often poorly represented, ignored or poorly parameterised in process based river temperature models. www.jstage.jst.go.jp/article/ras/...

jstage.jst.go.jp

Groundwater Contribution to River Water Temperature

River water temperature serves as a critical indicator of numerous biological and chemical processes essential for ecosystem support and water quality …

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Iain A Malcolm @iainamalcolm.bsky.social · 25/01/2025

Forecasting river temperature is likely to become increasingly important in a warming climate, informing management decisions in activities as diverse as electricity generation and angling. Interesting new paper: www.mdpi.com/2306-5338/12...

mdpi.com

Forecasting Model for Danube River Water Temperature Using Artificial Neural Networks

The objective of this paper is to propose an artificial neural network (ANN) model to forecast the Danube River temperature at Chiciu–Călărași, Romania, bordered by Romanian and Bulgarian ecological s...

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ProfColinBean @profcolinbean.bsky.social · 14/01/2025

New paper alert 🚨 Invading and range-expanding pink salmon inform management actions for marine species on the move, ICES Journal of Marine Science, 2025;, fsae199, doi.org/10.1093/ices...

doi.org

Invading and range-expanding pink salmon inform management actions for marine species on the move

Abstract. Species redistributions, whether resulting from invasions or range expansions, pose similar challenges for conservation and management. Redistrib

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Iain A Malcolm @iainamalcolm.bsky.social · 10/01/2025

Today was far too good to be at work! Cracking day out with excellent company. Somewhat baltic! #Scotland #Meagaidh @naturescot.bsky.social

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Iain A Malcolm @iainamalcolm.bsky.social · 28/12/2024

"differences [in migration speed] are related to changes in local ocean conditions: years with lower on-shelf salinity, stronger on-shelf northwest currents, and stronger shelf-edge currents were associated with greater migration success" academic.oup.com/icesjms/adva...

academic.oup.com

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