Jack Greenhalgh
@wildaudiojack.bsky.social
Postdoctoral Research Fellow @mcgill.ca interested in the mysterious underwater acoustic world of lakes & ponds.
#ecoacoustics #freshwaterecology
Web: https://www.jack-greenhalgh.com Scholar: https://scholar.google.co.uk/citations?user=ZV-dyhwAAAAJ&hl=en
#ecoacoustics #freshwaterecology
Web: https://www.jack-greenhalgh.com Scholar: https://scholar.google.co.uk/citations?user=ZV-dyhwAAAAJ&hl=en
Pinned
🧵Pond soundscapes are bursting with life and mysterious sounds!
Aquatic insects rub hard body parts together to attract mates and submerged plants release oxygen bubbles as they respire in the hot sun.
Aquatic insects rub hard body parts together to attract mates and submerged plants release oxygen bubbles as they respire in the hot sun.
Deadline extended untuil the 25th of Nov.
CALL FOR SPEAKERS: Are you working with emerging technologies in freshwater monitoring?
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
November 20, 2025 at 5:05 PM
Deadline extended untuil the 25th of Nov.
Reposted by Jack Greenhalgh
CALL FOR SPEAKERS: Are you working with emerging technologies in freshwater monitoring?
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
October 15, 2025 at 4:46 PM
CALL FOR SPEAKERS: Are you working with emerging technologies in freshwater monitoring?
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
Cool colossal squid captured on film for the first time in the dark depths of the Southern Ocean!
A deep-sea expedition has recorded 30 previously unknown species from one of the planet’s most inaccessible regions, 700 meters into the depths of the Southern Ocean.
The astonishing array included a carnivorous “death-ball” sponge, unknown sea stars spanning multiple families, and new crustaceans.
The astonishing array included a carnivorous “death-ball” sponge, unknown sea stars spanning multiple families, and new crustaceans.
Armored worms and death-ball sponges among array of life newly documented from the deep sea
In the darkness of the deep ocean, where pressure crushes and light fails, an expedition has found an astonishing array of life, including a carnivorous “death-ball” sponge (from the genus…
news.mongabay.com
November 9, 2025 at 10:01 PM
Cool colossal squid captured on film for the first time in the dark depths of the Southern Ocean!
Reposted by Jack Greenhalgh
Contribute to the first global archive of soniferous freshwater life, The Freshwater Sounds Archive, and receive recognition as a co-author in a resulting data paper!
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
June 9, 2025 at 6:21 PM
Contribute to the first global archive of soniferous freshwater life, The Freshwater Sounds Archive, and receive recognition as a co-author in a resulting data paper!
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
Reposted by Jack Greenhalgh
Spotify is running ICE advertisements and refuses to address it. Might be because their founder is basically another Elon Musk.
It’s time to cancel your subscription, and we made it easy for you—just go to BoycottSpotify.com.
It’s time to cancel your subscription, and we made it easy for you—just go to BoycottSpotify.com.
October 23, 2025 at 9:47 PM
Spotify is running ICE advertisements and refuses to address it. Might be because their founder is basically another Elon Musk.
It’s time to cancel your subscription, and we made it easy for you—just go to BoycottSpotify.com.
It’s time to cancel your subscription, and we made it easy for you—just go to BoycottSpotify.com.
CALL FOR SPEAKERS: Are you working with emerging technologies in freshwater monitoring?
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
October 15, 2025 at 4:46 PM
CALL FOR SPEAKERS: Are you working with emerging technologies in freshwater monitoring?
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
-Remote sensing
-Drones
-Underwater video / audio
- eDNA
- Robots
- & more...
Submit an abstract to our session at @aslo.org '26 in Montreal, Canada and join the discussion via: www.aslo.org/aslo-sil-2026/
Reposted by Jack Greenhalgh
Some really cool new insect and plant fossils from a ~112-million year old forest. Lots of neat pictures and analysis at the link. And it includes a fossil of one of my favourite insect orders, the caddisflies (Trichoptera). 🪲🪳🧪
www.nature.com/articles/s43...
www.nature.com/articles/s43...
Cretaceous amber of Ecuador unveils new insights into South America’s Gondwanan forests - Communications Earth & Environment
Cretaceous amber from the Ecuadorian Napo region provides exceptional evidence of a resinous forest ecosystem and diverse arthropod fauna in equatorial Gondwana, as revealed by integrated analyses of ...
www.nature.com
October 14, 2025 at 8:11 PM
Some really cool new insect and plant fossils from a ~112-million year old forest. Lots of neat pictures and analysis at the link. And it includes a fossil of one of my favourite insect orders, the caddisflies (Trichoptera). 🪲🪳🧪
www.nature.com/articles/s43...
www.nature.com/articles/s43...
Reposted by Jack Greenhalgh
Water policy is getting a shakeup in response to outcry at the state of our freshwaters. Including small waters like ponds, streams and ditches in the upcoming Water Reform Bill can bring clean water back to our landscapes.
👉 https://freshwaterhabitats.org.uk/news/small-waters-water-reform-bill/
👉 https://freshwaterhabitats.org.uk/news/small-waters-water-reform-bill/
October 10, 2025 at 9:50 AM
Water policy is getting a shakeup in response to outcry at the state of our freshwaters. Including small waters like ponds, streams and ditches in the upcoming Water Reform Bill can bring clean water back to our landscapes.
👉 https://freshwaterhabitats.org.uk/news/small-waters-water-reform-bill/
👉 https://freshwaterhabitats.org.uk/news/small-waters-water-reform-bill/
Reposted by Jack Greenhalgh
🎙️ New BBC podcast: Digital Dolittles – Talking to the animals? 🐘🦉
Featuring UCL’s Prof. Kate Jones @profkatej.bsky.social @ucl-pnl.bsky.social and UCL's PhD students, exploring how tech is changing the way we listen to nature 🌍✨
🔗 www.bbc.co.uk/sounds/play/...
Featuring UCL’s Prof. Kate Jones @profkatej.bsky.social @ucl-pnl.bsky.social and UCL's PhD students, exploring how tech is changing the way we listen to nature 🌍✨
🔗 www.bbc.co.uk/sounds/play/...
October 3, 2025 at 6:06 PM
🎙️ New BBC podcast: Digital Dolittles – Talking to the animals? 🐘🦉
Featuring UCL’s Prof. Kate Jones @profkatej.bsky.social @ucl-pnl.bsky.social and UCL's PhD students, exploring how tech is changing the way we listen to nature 🌍✨
🔗 www.bbc.co.uk/sounds/play/...
Featuring UCL’s Prof. Kate Jones @profkatej.bsky.social @ucl-pnl.bsky.social and UCL's PhD students, exploring how tech is changing the way we listen to nature 🌍✨
🔗 www.bbc.co.uk/sounds/play/...
Reposted by Jack Greenhalgh
"We are deeply saddened by the passing of Dr. Jane Goodall.
She was a force for nature, tirelessly advocating for the protection and restoration of our natural world.
Her presence will be sorely missed." - Tanya Steele, CEO WWF UK.
She was a force for nature, tirelessly advocating for the protection and restoration of our natural world.
Her presence will be sorely missed." - Tanya Steele, CEO WWF UK.
October 1, 2025 at 10:11 PM
"We are deeply saddened by the passing of Dr. Jane Goodall.
She was a force for nature, tirelessly advocating for the protection and restoration of our natural world.
Her presence will be sorely missed." - Tanya Steele, CEO WWF UK.
She was a force for nature, tirelessly advocating for the protection and restoration of our natural world.
Her presence will be sorely missed." - Tanya Steele, CEO WWF UK.
Reposted by Jack Greenhalgh
📦 GroupGets.com/devcase🎤The AudioMoth Dev Case is a waterproof, injection-molded shell designed for the AudioMoth Dev. It offers complete flexibility for hardware setup, featuring built-in mounts and slots to accommodate external microphones, GPS, larger batteries, and custom auxiliary boards.
September 30, 2025 at 9:46 PM
📦 GroupGets.com/devcase🎤The AudioMoth Dev Case is a waterproof, injection-molded shell designed for the AudioMoth Dev. It offers complete flexibility for hardware setup, featuring built-in mounts and slots to accommodate external microphones, GPS, larger batteries, and custom auxiliary boards.
Reposted by Jack Greenhalgh
Truly inspiring! www.bbc.co.uk/news/article...
Huntington's disease successfully treated for first time
One of the most devastating diseases finally has a treatment that can slow its progression and transform lives, tearful doctors tell BBC.
www.bbc.co.uk
September 25, 2025 at 11:00 AM
Truly inspiring! www.bbc.co.uk/news/article...
Reposted by Jack Greenhalgh
UPDATE: The 2025-2026 list of faculty and postdoc positions in ecology and evolutionary biology is out! Be sure to check out this active and helpful community run resources! docs.google.com/spreadsheets...
ecoevojobs.net 2025-26
docs.google.com
September 19, 2025 at 9:47 PM
UPDATE: The 2025-2026 list of faculty and postdoc positions in ecology and evolutionary biology is out! Be sure to check out this active and helpful community run resources! docs.google.com/spreadsheets...
Reposted by Jack Greenhalgh
Bioacoustics Winter School - January 2026
Time to apply! 👇Program and application form👇
www.eneslab.com/bioacoustic-...
Time to apply! 👇Program and application form👇
www.eneslab.com/bioacoustic-...
Bioacoustics Winter School | ENES lab
www.eneslab.com
September 15, 2025 at 6:17 PM
Bioacoustics Winter School - January 2026
Time to apply! 👇Program and application form👇
www.eneslab.com/bioacoustic-...
Time to apply! 👇Program and application form👇
www.eneslab.com/bioacoustic-...
Reposted by Jack Greenhalgh
Here are last nights Aurorae spotted from outside #Montreal and in the #easterntownships, #Sherbrooke!!
A suprise indeed, but a welcome one!
#Aurora #northernlights #astronomy #astrophotography
A suprise indeed, but a welcome one!
#Aurora #northernlights #astronomy #astrophotography
September 15, 2025 at 12:12 PM
Here are last nights Aurorae spotted from outside #Montreal and in the #easterntownships, #Sherbrooke!!
A suprise indeed, but a welcome one!
#Aurora #northernlights #astronomy #astrophotography
A suprise indeed, but a welcome one!
#Aurora #northernlights #astronomy #astrophotography
Reposted by Jack Greenhalgh
A starter pack for people & organisations that love #ponds! Whats not to love!!!
go.bsky.app/5ZMVBB1
go.bsky.app/5ZMVBB1
September 6, 2025 at 8:44 PM
A starter pack for people & organisations that love #ponds! Whats not to love!!!
go.bsky.app/5ZMVBB1
go.bsky.app/5ZMVBB1
Reposted by Jack Greenhalgh
Quote: "Available evidence suggests that the ongoing extinction episode still falls a long way short of the devastation caused by the bolide impact 66 Ma, but that it has likely surpassed most other Cenozoic events in magnitude"
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
The Greatest Extinction Event in 66 Million Years? Contextualising Anthropogenic Extinctions
Species and ecosystems are changing rapidly in response to human actions, but how does this compare with the deeper past? We review and compare the current extinction event to those over the last 66 ...
onlinelibrary.wiley.com
September 4, 2025 at 11:52 PM
Quote: "Available evidence suggests that the ongoing extinction episode still falls a long way short of the devastation caused by the bolide impact 66 Ma, but that it has likely surpassed most other Cenozoic events in magnitude"
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Jack Greenhalgh
Posts about scientific research on Bluesky receive substantially more attention than similar posts on Twitter. More importantly, you're far less likely to get sexist or racist replies.
Research posts on Bluesky are more original — and get better engagement
Bluesky posts about science garner more likes and reposts than similar ones on X.
go.nature.com
August 29, 2025 at 8:33 AM
Posts about scientific research on Bluesky receive substantially more attention than similar posts on Twitter. More importantly, you're far less likely to get sexist or racist replies.
Reposted by Jack Greenhalgh
News via The Transmitter www.thetransmitter.org/community/ha...
Harvard University lays off fly database team
The layoffs jeopardize this resource, which has served more than 4,000 labs for about three decades.
www.thetransmitter.org
August 13, 2025 at 7:59 PM
News via The Transmitter www.thetransmitter.org/community/ha...
Reposted by Jack Greenhalgh
New Sonic Connexions event coming up on August 12! 🧪🔉#bioacoustics
Register here:
whoi-edu.zoom.us/meeting/regi...
Register here:
whoi-edu.zoom.us/meeting/regi...
July 31, 2025 at 4:11 AM
New Sonic Connexions event coming up on August 12! 🧪🔉#bioacoustics
Register here:
whoi-edu.zoom.us/meeting/regi...
Register here:
whoi-edu.zoom.us/meeting/regi...
Reposted by Jack Greenhalgh
Are you a recent PhD (or soon to be PhD) from outside Canada looking to do a postdoc in Quebec?
Get in touch if you are excited about microbes, evolution, ecology, genomics (or all of the above!) and I'd be happy to help develop a project together!
www.mcgill.ca/gps/funding/...
Get in touch if you are excited about microbes, evolution, ecology, genomics (or all of the above!) and I'd be happy to help develop a project together!
www.mcgill.ca/gps/funding/...
PBEEE/Quebec Merit Scholarship for Foreign Postdocs and Visiting Research Student and Visiting Researchers
**Note that the FRQ is in the process of revamping their webpages. We will update links soon as we can with the current 2025 year's information. Be sure to check back to see if any eligibility or docu...
www.mcgill.ca
June 11, 2025 at 7:00 PM
Are you a recent PhD (or soon to be PhD) from outside Canada looking to do a postdoc in Quebec?
Get in touch if you are excited about microbes, evolution, ecology, genomics (or all of the above!) and I'd be happy to help develop a project together!
www.mcgill.ca/gps/funding/...
Get in touch if you are excited about microbes, evolution, ecology, genomics (or all of the above!) and I'd be happy to help develop a project together!
www.mcgill.ca/gps/funding/...
Reposted by Jack Greenhalgh
A newly identified group of deep-sea spiders carries methane-eating microbes on their legs, revealing a unique symbiosis and a surprising new lineage in the ocean depths
#DeepSea
#NewSpecies
#MarineBiology
#OceanExploration
#biology
🧪🕷️🌊
Paper
www.pnas.org/doi/10.1073/...
#DeepSea
#NewSpecies
#MarineBiology
#OceanExploration
#biology
🧪🕷️🌊
Paper
www.pnas.org/doi/10.1073/...
New Discovery of Deep Sea 'Spiders' Is Unlike Anything We've Seen Before
Three newly-discovered species of deep sea 'spiders' farm methane-eating bacteria on their own bodies in a symbiosis quite unlike anything seen before.
www.sciencealert.com
June 23, 2025 at 4:19 AM
A newly identified group of deep-sea spiders carries methane-eating microbes on their legs, revealing a unique symbiosis and a surprising new lineage in the ocean depths
#DeepSea
#NewSpecies
#MarineBiology
#OceanExploration
#biology
🧪🕷️🌊
Paper
www.pnas.org/doi/10.1073/...
#DeepSea
#NewSpecies
#MarineBiology
#OceanExploration
#biology
🧪🕷️🌊
Paper
www.pnas.org/doi/10.1073/...
Reposted by Jack Greenhalgh
🔉🐸🐟🦐🪲
Got freshwater sounds? Consider contributing to the Freshwater Sounds Archive! We're accepting submissions until the end of this year, and all contributors can co-author the resulting data paper. Learn more at fishsounds.net/freshwater.js and www.biorxiv.org/content/10.1...!
Got freshwater sounds? Consider contributing to the Freshwater Sounds Archive! We're accepting submissions until the end of this year, and all contributors can co-author the resulting data paper. Learn more at fishsounds.net/freshwater.js and www.biorxiv.org/content/10.1...!
Contribute to the first global archive of soniferous freshwater life, The Freshwater Sounds Archive, and receive recognition as a co-author in a resulting data paper!
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
June 9, 2025 at 10:49 PM
🔉🐸🐟🦐🪲
Got freshwater sounds? Consider contributing to the Freshwater Sounds Archive! We're accepting submissions until the end of this year, and all contributors can co-author the resulting data paper. Learn more at fishsounds.net/freshwater.js and www.biorxiv.org/content/10.1...!
Got freshwater sounds? Consider contributing to the Freshwater Sounds Archive! We're accepting submissions until the end of this year, and all contributors can co-author the resulting data paper. Learn more at fishsounds.net/freshwater.js and www.biorxiv.org/content/10.1...!
Contribute to the first global archive of soniferous freshwater life, The Freshwater Sounds Archive, and receive recognition as a co-author in a resulting data paper!
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
June 9, 2025 at 6:21 PM
Contribute to the first global archive of soniferous freshwater life, The Freshwater Sounds Archive, and receive recognition as a co-author in a resulting data paper!
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
Pre-print now available. New deadline: 31st Dec, 2025.
See link 👇4 more fishsounds.net/freshwater.js
Sometimes ecology is about being in nature and observing. On a Canadian lake, there’s only one way to do that: canoe.
It was exploring the edges of habitats & the edges of periods of the day that were so interesting.
I returned full of new research ideas and questions to be answered.
It was exploring the edges of habitats & the edges of periods of the day that were so interesting.
I returned full of new research ideas and questions to be answered.
June 9, 2025 at 2:58 PM
Sometimes ecology is about being in nature and observing. On a Canadian lake, there’s only one way to do that: canoe.
It was exploring the edges of habitats & the edges of periods of the day that were so interesting.
I returned full of new research ideas and questions to be answered.
It was exploring the edges of habitats & the edges of periods of the day that were so interesting.
I returned full of new research ideas and questions to be answered.