Sign in

Brian Hayden

@drhaydo.bsky.social
395 followers 703 following 108 posts

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

PostsRepliesMedia
Reposted by Brian Hayden
Nessa O'Connor @nessocon.bsky.social · 20/08/2026
We are recruiting 4 Postdoctoral Fellows! 🌊🌊🌊 Applications are open now! Deadline is 10th October 2026. More details and updates here: climate-hub.ie/msdm/ #postdoc #marine #MarieSkłodowska-Curie #MarineLife!
climate-hub.ie
Marine Species Distribution Modelling – AIB Trinity Climate Hub
02223
Reposted by Brian Hayden
Brian Hayden @drhaydo.bsky.social · 18/08/2026
Very excited for these new training offerings from Atomoc Ecology. Learn alongside an international group of peers in a course tailored to your own research project. Group courses | Atomic Ecology share.google/G91HOgtjepgM...
share.google
Group courses | Atomic Ecology
Online and in-person training in stable isotope ecology
101
Brian Hayden @drhaydo.bsky.social · 18/08/2026
Very excited for these new training offerings from Atomoc Ecology. Learn alongside an international group of peers in a course tailored to your own research project. Group courses | Atomic Ecology share.google/G91HOgtjepgM...
share.google
Group courses | Atomic Ecology
Online and in-person training in stable isotope ecology
101
Brian Hayden @drhaydo.bsky.social · 09/08/2026
Opportunity of a lifetime!! Roll up, roll up!!
010
Brian Hayden @drhaydo.bsky.social · 09/08/2026
Reasons to be cheerful!!
010
Reposted by Brian Hayden
EveryHeron 𓅣 @everyheron.bsky.social · 09/08/2026
Stay low. So low. Reflections are eliminated and the fish won't see you approaching... #HeronTipOfTheDay
0275
Reposted by Brian Hayden
Anthony Ricciardi @ecoinvasions.bsky.social · 08/08/2026
And sometimes we understand the driver of the extinction: in this case, invasive species (zebra & quagga mussels) introduced through the release of ballast water by transoceanic ships.
0177
Reposted by Brian Hayden
Brian Hayden @drhaydo.bsky.social · 06/07/2026
Some new training options from Atomic Ecology - the Academic Path is tailored to current studnets. We start with theory in the autumn and tackle data in the winter through regular group tutorials www.atomicecology.com/academic-pat...
atomicecology.com
Academic Path | Atomic Ecology
"From atoms to ecosystems....."
012
Reposted by Brian Hayden
Brian Hayden @drhaydo.bsky.social · 07/07/2026
I recently caught up with Victor Deklerck from World Forest ID to chat about their work verifying the supply chains behind many of the products, textiles and foods we rely on. Isotopes in action for the latest Atomic Ecology Meets! www.atomicecology.com/post/atomic-...
021
Reposted by Brian Hayden
Brian Hayden @drhaydo.bsky.social · 07/07/2026
Training got a refresh at Atomic Ecology recently: new courses, new rates and new ways to learn - www.atomicecology.com/training
atomicecology.com
Training | Atomic Ecology
"From atoms to ecosystems....."
075
Reposted by Brian Hayden
ProfColinBean @profcolinbean.bsky.social · 02/08/2026
Trophic Niche Partitioning Between Lake Whitefish and Cisco: Post-glacial Patterns and Response to Anthropogenic Cisco Introductions . Canadian Journal of Zoology. Just-IN doi.org/10.1139/cjz-...
doi.org
Canadian Science Publishing
032
Reposted by Brian Hayden
Brian Hayden @drhaydo.bsky.social · 31/07/2026
As #ESA2026 starts to wind down, a quick shout to any studnets using stable isotopes their research - the #AtomicEcology academic path course is build on 10+ years teaching these techniques & allows you to lear with a cohort of international peers www.atomicecology.com/academic-pat...
011
Brian Hayden @drhaydo.bsky.social · 31/07/2026
As #FSBI2026 starts to wind down, a quick shout to any studnets using stable isotopes their research - the #AtomicEcology academic path course is build on 10+ years teaching these techniques & allows you to lear with a cohort of international peers www.atomicecology.com/academic-pat...
031
Brian Hayden @drhaydo.bsky.social · 31/07/2026
As #ESA2026 starts to wind down, a quick shout to any studnets using stable isotopes their research - the #AtomicEcology academic path course is build on 10+ years teaching these techniques & allows you to lear with a cohort of international peers www.atomicecology.com/academic-pat...
011
Brian Hayden @drhaydo.bsky.social · 31/07/2026
Great to see conference # being useful again, a real pleasure to follow #FSBI2026 from home this week & find new faces to follow - sincerest thanks to @thefsbi.bsky.social @marianilab.bsky.social @otolithgirl.bsky.social @drwillperry.bsky.social et al for spreading the good news
032
Reposted by Brian Hayden
Jens-Christian Svenning @jcsvenning.bsky.social · 24/07/2026
New @econovoau.bsky.social study led by @jonastrepel.bsky.social: Global analysis shows that #vegetation in semi-natural areas greened (densified) faster w/ higher #Ndeposition - #nitrogen pollution may be an underestimated driver of global vegetation change🌿 doi.org/10.1002/ecog... #globalgreening
doi.org
Global analysis suggests nitrogen deposition as an underestimated driver of vegetation greening
The local effects of atmospheric nitrogen deposition on plants are well established, yet a global empirical analysis of nitrogen deposition effects on vegetation dynamics is missing. Here, we assess ...
02416
Brian Hayden @drhaydo.bsky.social · 15/07/2026
One for @stephenbheard.bsky.social
130
Brian Hayden @drhaydo.bsky.social · 09/07/2026
Stable Isotope Ecology - Theory, Data and Effective Applications - A new online group course from Atomic Ecology will take place in November 2026. Through an intensive week we will cover the essential theory underpinning the field and
atomicecology.com
5 Day Intensive Course | Atomic Ecology
"From atoms to ecosystems....."
120
Brian Hayden @drhaydo.bsky.social · 07/07/2026
Training got a refresh at Atomic Ecology recently: new courses, new rates and new ways to learn - www.atomicecology.com/training
atomicecology.com
Training | Atomic Ecology
"From atoms to ecosystems....."
075
Brian Hayden @drhaydo.bsky.social · 07/07/2026
I recently caught up with Victor Deklerck from World Forest ID to chat about their work verifying the supply chains behind many of the products, textiles and foods we rely on. Isotopes in action for the latest Atomic Ecology Meets! www.atomicecology.com/post/atomic-...
021
Brian Hayden @drhaydo.bsky.social · 06/07/2026
Some new training options from Atomic Ecology - the Academic Path is tailored to current studnets. We start with theory in the autumn and tackle data in the winter through regular group tutorials www.atomicecology.com/academic-pat...
atomicecology.com
Academic Path | Atomic Ecology
"From atoms to ecosystems....."
012
Brian Hayden @drhaydo.bsky.social · 03/07/2026
Great to chat with @vdeklerck from @world-forest-id this morning fort a new episode of Atomic Ecology Meets. Isotopes in action to trace food and timber fraud! We discussed how it works, why its important and how you can get involved. Video will be online next week!
010
Reposted by Brian Hayden
Craig Primmer @fishcongen.bsky.social · 29/06/2026
Thanks to a couple of recent Ws on the funding front, we have 3 open postdoc positions in Helsinki, Finland in the field of salmonid fish ecological and evolutionary genomics. DL 7.8. More details in advert: jobs.helsinki.fi/job/Helsinki...
Basic details of the amazing post doc positions on offer with amazing image of a large Teno River salmon in background
03343
Reposted by Brian Hayden
Physalia-courses@ONLINE @physaliacourses.bsky.social · 21/06/2026
Looking to strengthen your data analysis and reproducibility skills in R? At Physalia, we have three upcoming online courses that may be of interest to researchers, data scientists, and anyone working with biological and ecological data #Rstats #DataScience www.physalia-courses.org/courses-work...
121
Brian Hayden @drhaydo.bsky.social · 16/06/2026
New isotope just dropped....
000
Brian Hayden @drhaydo.bsky.social · 15/06/2026
A brief overview of stable isotopes and what they can bring to your research - I gave a talk for the Freshwater Biological Association last week and enjoyed it so much I recorded a version earlier today! vimeo.com/1201459099?s...
vimeo.com
Hayden, FBA_video
A version of an invited keynote I gave to the Freshwater Biological Association in 2026. We cover stable isotopes, lakes, rivers, ecological function and more besides!
010
Reposted by Brian Hayden
Stephen Heard @stephenbheard.bsky.social · 15/06/2026
Your occasional reminder: I can help teach your students to write! My one-week intensive scientific writing course can happen at your institution. Details here:
scientistseessquirrel.wordpress.com
Writing Course
I can help your students write! I can offer a one-week, in-person writing course for graduate students and postdoctoral fellows at your institution. You will arrange a room, some office supplies, a…
041
Brian Hayden @drhaydo.bsky.social · 12/06/2026
Not even @aiannucci.bsky.social could write that! What an image!
000
Reposted by Brian Hayden
Nigel Monaghan @nigelmonaghan-nh.bsky.social · 09/06/2026
Job for a freshwater ecologist in Ireland with the state body for environmental monitoring www.epa.ie/publications... #ecology #jobs
epa.ie
Scientific Officer III (Level 5) Freshwater Ecologist
The successful candidate will fulfil the role of Scientific Officer III (Level 5) Freshwater Ecologist. The successful candidate will work in the EPA’s Ecological Monitoring and Assessment Unit which...
044
Reposted by Brian Hayden
Prof Ian Hall @ianhall.bsky.social · 02/06/2026
A global study of 41,499 lakes reveals that lake sediments experience heatwaves that are often longer, more frequent, and slower to cool than surface waters. ...boosting production of GHGs (e.g. CH4) and altering freshwater ecosystems worldwide. www.nature.com/articles/s41...
nature.com
Lake sediment heatwaves under global warming - Nature Geoscience
Model analyses and projections of sediment heatwave duration, intensity and frequency across 41,499 representative lakes suggest that lake sediment heatwaves are more persistent and frequent than lake...
1237
Reposted by Brian Hayden
David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 01/06/2026
Folks, some quick professional news here: After teaching the "Ecology and Conservation of Sharks" course for 5 years at Nova Southeastern, the graduate school has opted not to renew my contract. I'm fine, this course was a small part of my overall income.
16317
Reposted by Brian Hayden
Soph Warnes @thatsoph.bsky.social · 14/05/2026
I was annoyed that I couldn't find a database of David Attenborough documentaries where I could search for a specific episode by topic. So I made it. attenborough-100.vercel.app
attenborough-100.vercel.app
Attenborough at 100 — A Nature Documentary Archive
Explore nearly 5,000 episodes across 90 series — from Zoo Quest in 1954 to Secret Garden in 2026. Search by animal, habitat, location, or theme.
471684730
Reposted by Brian Hayden
Trevor A. Branch @trevorabranch.bsky.social · 22/05/2026
Context: $9 billion is more than the entire annual NSF budget allocated for all science research in the US. If the NSF budget had actually been disbursed this year (it has not). www.nytimes.com/2026/05/22/u...
nytimes.com
White House Approves $9 Billion for Spy Agencies to Catch Up on A.I.
14728
Reposted by Brian Hayden
Proceedings of the National Academy of Sciences @pnas.org · 22/05/2026
Isotopes and food residue show that as people in Kenya’s Turkana Basin transitioned from fishing and foraging to herding cattle, around 5,000 years ago, they took a full millennium to fully shift to a specialized diet centered around livestock. In PNAS: ow.ly/NTIa50Z3eRr
Domestic cattle in the Turkana region, Kenya. 
CREDIT: Katherine Grillo.
074
Reposted by Brian Hayden
Stephen Heard @stephenbheard.bsky.social · 21/05/2026
So, I've just been bellyaching about the (book) publishing world. So it makes sense to re-up this post, about a super easy way you can support an author. (Could be me but definitely doesn't have to be!). And remove some money from Jeff Bezos' pocket at the same time.
scientistseessquirrel.wordpress.com
How to give Jeff Bezos less money – and support an author, artist, or craftsperson
Jeff Bezos (the founder of Amazon) has a lot of money. Not “a lot” in the sense that you or I might have a lot of money if we’d just been paid, or received an inheritance, or even won the lottery –…
043
Reposted by Brian Hayden
David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 21/05/2026
When One Dead Whale Becomes a Decades-Long Buffet
nautil.us
When One Dead Whale Becomes a Decades-Long Buffet
When One Dead Whale Becomes a Decades-Long Buffet: An ocean floor feast that’s bottomless
0338
Brian Hayden @drhaydo.bsky.social · 22/05/2026
Good news Friday! Congratulations Britney Brown, whoever you are, fighting the good fight and winning!! www.theguardian.com/us-news/2026...
theguardian.com
Florida biologist fired over Charlie Kirk post wins $485,000 settlement
Biologist was fired by a state agency for criticizing Charlie Kirk on social media after his shooting death
000
Brian Hayden @drhaydo.bsky.social · 20/05/2026
Really enjoying my first run at delivering a course with Physalia! Half way through and we have already evaluated data QC, played with biplots and run all sorts of mixing models. TRophic position and group exercises today and finishing with food webs tomorrow!
041
Reposted by Brian Hayden
Physalia-courses@ONLINE @physaliacourses.bsky.social · 19/05/2026
AI-Assisted Scientific Writing course (online, 3–5 June). Learn how to use LLMs & AI agents for literature search, drafting, fact-checking & peer review workflows. www.physalia-courses.org/courses-work... #AI #ScientificWriting
physalia-courses.org
AI-Assisted Scientific Writing: From Literature Search to Publication
3-5 June 2026
002
Brian Hayden @drhaydo.bsky.social · 15/05/2026
There are still a few of seats for next week's Stable Isotope Data Analysis course with Physilia - This online course will cover data validation, mixing models, foods webs, niches and trophic position, lots of R packages and time to discuss your data www.physalia-courses.org/courses-work...
physalia-courses.org
Applied stable isotope ecology with R – from data to decisions
18-21 May 2026
052
Reposted by Brian Hayden
Physalia-courses@ONLINE @physaliacourses.bsky.social · 11/05/2026
If you would like to learn how to analyse stable isotope datasets in R, you can still join us next week for this 4-day online course taught by @drhaydo.bsky.social: www.physalia-courses.org/courses-work... Dates and time: 18-21 May (2-6 PM Berlin time).
physalia-courses.org
Applied stable isotope ecology with R – from data to decisions
18-21 May 2026
013
Reposted by Brian Hayden
freshwater fELA 🇨🇦 @not-klaatu.bsky.social · 10/05/2026
Across lakes and species, eDNA reads follow rank-based abundance metrics. Lots of potential for non-destructive future applications. So happy to have worked on this paper with powerhouse eDNA researcher @jlittlefair.bsky.social besjournals.onlinelibrary.wiley.com/doi/abs/10.1...
besjournals.onlinelibrary.wiley.com
Environmental DNA metabarcoding reflects rank‐based abundance of fish
This approach provides a practical tool for managers to rapidly assess rank abundance of freshwater fishes, offering particular value for monitoring smaller species that are often missed by conventio...
044
Reposted by Brian Hayden
Science Magazine @science.org · 07/05/2026
A giant fish called the arapaima is the focus of a conservation success story in the Brazilian Amazon. Learn more in this week's issue of Science: scim.ag/3PtCVIN
A giant fish called the arapaima is the focus of a conservation success story in the Brazilian Amazon. Scientists have worked with local villages to protect the commercially valuable fish from poachers while allowing villagers to profit from a sustainable arapaima harvest. The project has spurred development and led to the protection of some 150,000 km2 of tropical forest.

Photo: Michael Dantas/AFP via Getty Images
45214
Reposted by Brian Hayden
Physalia-courses@ONLINE @physaliacourses.bsky.social · 07/05/2026
Physalia turns 10 this month! 🎉 A huge thank you to everyone who joined our courses, collaborated with us, or followed our journey. To celebrate, we’re offering 10% off all May courses for our followers. Interested? Email us at info@physalia-courses.org www.physalia-courses.org/courses-work...
021
Brian Hayden @drhaydo.bsky.social · 05/05/2026
Science is better with friends, and isotope ecology is no different! Delighted to join the folks from The eDNA Consultancy for a FREE IFM webinar explaining how to combine new techniques to develop a better understanding of fish community structure and function! ifm.org.uk/events/moder...
ifm.org.uk
Modern Tools for Fisheries Management: eDNA & Stable Isotopes in Practice – Institute of Fisheries Management
Institute of Fisheries Management
010
Brian Hayden @drhaydo.bsky.social · 29/04/2026
Interested in applying isotopes to your ecological work but don't know where to start? Im giving an introductory webinar for the ESA tomorrow! Learn about applications from carbon capture to food webs and animal migration. Registration below esa.org/career-devel...
010
Reposted by Brian Hayden
Proceedings of the National Academy of Sciences @pnas.org · 27/04/2026
Environmental DNA from lakes and rivers in Southeast China shows that sites with frequent tropical cyclones have more nonnative fish than less storm-prone sites, partly because flood waters and high winds facilitate species movement. In PNAS: ow.ly/bC5150YQEl8
Nile tilapia, Oreochromis niloticus, one of the nonnative species commonly detected in the study. Stock photo.
072
Reposted by Brian Hayden
CSEE_SCEE @csee-scee.bsky.social · 27/04/2026
📣Reminder that today is the LAST DAY to fill out the Google Form to order a meeting t-shirt. More information here: csee-scee.ca/csee-merchan...
123
Brian Hayden @drhaydo.bsky.social · 23/04/2026
Back on the road with Atomic Ecology - visiting my Alma Matter to give a seminar on stable isotope ecology and why Irish researchers need to be doing more of it!
030
Reposted by Brian Hayden
Surprised Eel Historian, PhD @greenleejw.bsky.social · 21/04/2026
I got into eel history by studying the Dutch eel ships on the Thames. We don't generally remember them much now, but they were there from the c.1470 - 1938. They used to be low-key famous, even appearing in Nicolas Sarony's 1929 cigarette card collection, "Ships of All Ages." 🗃️🧪
Front of the card, showing two ships in calm water with sails slack. A label in the water below them reads: "Dutch eel boat." They are somewhat orange in color, suggesting a setting sun -- another indication that they are not British. The shadow from the boats looks an unhealthy green on the water, which is perhaps appropriate for the Thames. Overall, the whole image is done in washed out citrus-y colors, which makes it warm and inviting, and also a good source of Vitamin C.

These ships and their predecessors supplied live eels to London for something like 500 years. You've never done anything for that long in your whole life. And you never will. Eel ships were there during the War of the Roses, and during Shakespeare's life, and during WWI. They are gone and forgotten now, but they were once a part of the living city.The back of the card, with text describing the ships. The text is surrounded by a framing of ropes, with some blocks and tackles and hooks and such. It looks very nautical. The text which these lines frame reads thus:

"Ships of All Ages, a series of 50. No. 25.

Dutch Eel Boat

The Thames barge is considered to be of Dutch origin, and it sometiems meets in the estuary its relative, the Dutch eel schuyt, which, like the barge, is designated for work on both salt and fresh water. The schuyt is typically Dutch, stoutly built and comfortable looking, and is considered to be the most representative of the seagoing craft of Holland; it is also easily navigated on the crowded canals of the country.

Issued by
Nicolas Sarony & Co.
84 Picadilly
London, W.I."

FTR -- if someone describes you as stoutly built and comfortable looking, you should object. Unless you're an eel ship.

Are you an eel ship?
212219