Brian Hayden
drhaydo.bsky.social
Brian Hayden
@drhaydo.bsky.social

Isotopes, fish, footy and more isotopes.... Prof at University of New Brunswick

Environmental science 63%
Geography 17%

Course modules include:
• Foundations
• Study design
• Food webs
• Mixing models
• R workflows
👉 atomicecology.com/courses
Online Courses | Atomic Ecology
Online training in the application of stable isotopes to ecological and environmental research
atomicecology.com

Always a please to enjoy the winter sun in Salford. Thanks for a great visit!
Delighted that one of my Antarctic winter photos has won the 2025 Royal Society Photography Competition, Earth Science & Climatology category.

Captured during polar-night surveys of ocean conditions near Antarctic Peninsula glaciers.

royalsociety.org/journals/pub...

This was a LOT of work — filming, writing, editing, R coding… and a slightly unhealthy amount of coffee. Very pleased with the outcome though, time well spent!

Courses → www.atomicecology.com/courses
Online Courses | Atomic Ecology
Online training in the application of stable isotopes to ecological and environmental research
www.atomicecology.com

Reposted by Brian Hayden

🚨 New Research Highlight - The pace of life along the river continuum: Hierarchical variation in salmonid life-history diversity.

Read the full highlight here ➡️ buff.ly/pxPKJaz

Read (Shida and Sato 2025) here ➡️ buff.ly/WC119Di

Reposted by Allan D. McDevitt

5 things you’ll learn in my new Stable Isotope Ecology courses:

• Isotope foundations
• Study design
• Food webs
• Mixing models
• R workflows

👉 www.atomicecology.com/courses 👉
Stable Isotope Data Analysis Through R - Training from Atomic Ecology
A revised and improved version of my wildly successful stable isotope data analysis course is now available through Atomic Ecology. In this course I teach you how…
vimeo.com

Reposted by Brian Hayden

📖 Published📖

An iso-logging workflow that converts stable isotope chronologies in eye lenses into continuous migration tracks. Reconstruction of migration by iso-logging is a powerful approach for reconstructing the lifetime migration history of pelagic fish🌍 🧪 🐟

Read here:
buff.ly

Who are these courses for?

Researchers, students, labs, agencies — anyone using stable isotopes.
👉 www.atomicecology.com/courses
👉 vimeo.com/1141154923
#Ecology #StableIsotopes
Online Courses | Atomic Ecology
Online training in the application of stable isotopes to ecological and environmental research
www.atomicecology.com

If you want clear explanations + applied examples + practical R skills… these courses are for you.
👉 www.atomicecology.com/courses
#StableIsotopes #Ecology #Rstats #EnvironmentalScience
Online Courses | Atomic Ecology
Online training in the application of stable isotopes to ecological and environmental research
www.atomicecology.com

Over the last 15–20 years I’ve helped hundreds of researchers, students, labs, and agencies. The same questions kept coming up. The same mistakes. The same “aha!” moments.

So I built the courses I wished I had when starting out.

Why create two full stable isotope courses?

Because more and more people rely on isotopes — but very few get proper training in how to design studies, interpret data, or use tools like simmr or MixSIAR with confidence.

vimeo.com/1141154923
Stable Isotope Data Analysis Through R - Training from Atomic Ecology
A revised and improved version of my wildly successful stable isotope data analysis course is now available through Atomic Ecology. In this course I teach you how…
vimeo.com

If you’re working with stable isotopes (or want to), these courses will give you everything you need to get started or level up.

🎥 Trailer below
👉 www.atomicecology.com/courses
Online Courses | Atomic Ecology
Online training in the application of stable isotopes to ecological and environmental research
www.atomicecology.com

• Stable Isotope Data Analysis Through R
A refreshed and expanded version of the course that’s trained 1,000+ isotope researchers — now with new modules, updated scripts, and more advanced workflows.
Online Courses | Atomic Ecology
Online training in the application of stable isotopes to ecological and environmental research
www.atomicecology.com

• Essentials of Stable Isotope Ecology
Covers what isotopes are, how to design studies, biogeochemical cycles, trophic ecology, and the core concepts we rely on.
Online Courses | Atomic Ecology
Online training in the application of stable isotopes to ecological and environmental research
www.atomicecology.com

Big news from Atomic Ecology today! 🎉

After months of work, I’m launching two new courses for anyone using stable isotopes in ecology or environmental science:

vimeo.com/1141155727?s...
Online Courses | Atomic Ecology
Online training in the application of stable isotopes to ecological and environmental research
www.atomicecology.com

Reposted by Brian Hayden

🐇 "Despite century-long research, demographic mechanisms underlying snowshoe hare population cycles have remained elusive"

New Research: Demographic mechanisms of snowshoe hare population cycles in Yukon, Canada ➡️ buff.ly/Qt1Xiuv
📣 Ecologists and evolutionary biologists! Have you ever wanted to be a journal editor? BES journals are having an open call for editors. Details: www.britishecologicalsociety.org/content/appl... Happy to answer any Qs! Open to all nationalities. Applications from postdocs welcome :)
Apply to be a BES Associate Editor - British Ecological Society
Help advance outstanding ecological research by joining our Editorial Boards! Applications are now open across all seven BES journals.
www.britishecologicalsociety.org
Over the 19 years Ireland has had a derogation from the nitrates directive we have backed ourselves in to a corner. Which now leaves us having productive and economically viable farms or cleaner rivers and lakes, but not both.

Listen: 👉 www.rte.ie/radio/radio1...
Nitrates derogation
Back in the early nineties all across the EU a rule was introduced to protect rivers and streams from agricultural run off. At the last count 7,000 out of 137,000 farms in Ireland had received a derog...
www.rte.ie

Reposted by Brian Hayden

New paper!
Our study in Ecosphere, led by Chong Chen on our @oceancensus.bsky.social cruise, maps biodiversity in methane seeps. My role was minor, but everyone was a blast to work with. We have more exciting stuff from this cruise coming!
esajournals.onlinelibrary.wiley.com/doi/10.1002/...
Biological surveys reveal unexpectedly high faunal diversity at Nankai Trough methane seeps
Cold seeps are chemosynthesis-based ecosystems powered by microbial primary production that support diverse and specialized faunal assemblages in the deep sea. Despite Nankai Trough in Japan being a ....
esajournals.onlinelibrary.wiley.com

Thanks for a really informative and well run evening. As an aquatic ecologist who has recently moved to the area I would love to learn more and help out. Whats the best way to follow up and get in touch?

Ever wondered how to make your stable isotope data more reliable? 🤔
A lesson from Nate Silver’s election polls might help.

Read my blog →https://www.atomicecology.com/post/what-can-stable-isotope-ecologists-learn-from-election-polling

#Ecology #Statistics #ResearchTips #DataAnalysis

Happy #WorldEggDay! 🥚
A few curious students and a few cartons of eggs led to one of my favourite isotope stories — testing whether “free range” eggs really lived up to their label. Spoiler: the isotopes told the truth.
Full story on Atomic Ecology: www.atomicecology.com/post/the-chi...

Delighted to be back teaching on The Survivor's Guide to Stable Isotope Ecology for 2026 - its always a highlight of the year. A fantastic week of isotopic learning in a truly magnificent location. www.exedramc.com/courses/surv...

Food webs are the blueprint of ecosystems.

Want to know what fuels migrating birds? Or how invasive species disrupt rivers and lakes? The answers are in the food web — and stable isotopes let us read it.

www.atomicecology.com/post/whats-i...
Whats in a food web?
Food webs are the blueprint for ecosystems, detailing how nutrients and energy fuel every aspect of life on Earth.
www.atomicecology.com

Really neat work James and great to hear that beavers are having, at worst, no negative impact on migrating fishes, while also creating so much new habitat!

Im just warming them for you mate

Super first day at #FSBI2025 - nice to be back in Belfast amongst my favourite fishy people. Even managed to finish my talk before sunset!!

Reposted by Brian Hayden

And surprise..... We're moving back to Ireland this summer! Watch this space......