Malte Willmes
@rocksandbones.bsky.social
Wildlife Researcher at NINA
Otoliths, Isotopes, Ancient and modern fishes
Otoliths, Isotopes, Ancient and modern fishes
After taking (too) many pictures of scales we finally have our new study out: Identifying escaped farmed salmon from scales using deep learning: academic.oup.com/biomethods/a...
The model works well and covers the major Atlantic salmon rivers in Norway. Could be adpated to other fish and places!
The model works well and covers the major Atlantic salmon rivers in Norway. Could be adpated to other fish and places!
December 8, 2025 at 2:28 PM
After taking (too) many pictures of scales we finally have our new study out: Identifying escaped farmed salmon from scales using deep learning: academic.oup.com/biomethods/a...
The model works well and covers the major Atlantic salmon rivers in Norway. Could be adpated to other fish and places!
The model works well and covers the major Atlantic salmon rivers in Norway. Could be adpated to other fish and places!
Interesting article by my colleague Carson Jeffres californiawaterblog.com/2025/10/05/c...
California: A Salmon Society?
By Carson Jeffres Consider for a moment the identity of the Pacific Northwest as a Salmon Society. When you fly into an airport in the Pacific Northwest, salmon are on the floors and wal…
californiawaterblog.com
October 5, 2025 at 11:27 AM
Interesting article by my colleague Carson Jeffres californiawaterblog.com/2025/10/05/c...
Reposted by Malte Willmes
ICES Workshop on emerging methods and technologies for the automated analysis of calcified structures #WKETAC invites experts in fish biology, stock assessment & computational technologies.
📅 2–3 October 2025
📌 Boulogne-sur-mer, France - and online
ℹ️https://ices.dk/community/groups/Pages/WKETAC.aspx
📅 2–3 October 2025
📌 Boulogne-sur-mer, France - and online
ℹ️https://ices.dk/community/groups/Pages/WKETAC.aspx
September 3, 2025 at 4:21 PM
ICES Workshop on emerging methods and technologies for the automated analysis of calcified structures #WKETAC invites experts in fish biology, stock assessment & computational technologies.
📅 2–3 October 2025
📌 Boulogne-sur-mer, France - and online
ℹ️https://ices.dk/community/groups/Pages/WKETAC.aspx
📅 2–3 October 2025
📌 Boulogne-sur-mer, France - and online
ℹ️https://ices.dk/community/groups/Pages/WKETAC.aspx
Reposted by Malte Willmes
IsoArcH is organizing its first Addithon, a 10-day virtual community event! This event will bring volunteers together from all over the world, to add to this ever-growing open data repository for isotopes from archaeological research.
bit.ly/IsoArcH2025
bit.ly/IsoArcH2025
IsoArcH Addithon 2025
This form is used to sign up for the IsoArcH Addithon to be run from 11-20 August 2025.
bit.ly
July 10, 2025 at 3:43 PM
IsoArcH is organizing its first Addithon, a 10-day virtual community event! This event will bring volunteers together from all over the world, to add to this ever-growing open data repository for isotopes from archaeological research.
bit.ly/IsoArcH2025
bit.ly/IsoArcH2025
Reposted by Malte Willmes
Our bioavailable strontium baseline for Corsica is out! ⁸⁷Sr/⁸⁶Sr ranges from 0.7075 to 0.7169 and was established from 245 plant & soil leachate samples from 125 sites.
Check out the article here lnkd.in/e6pDJFCY
and the dataset can be downloaded from the IsoArcH database here lnkd.in/eFNS5Xbw
Check out the article here lnkd.in/e6pDJFCY
and the dataset can be downloaded from the IsoArcH database here lnkd.in/eFNS5Xbw
August 11, 2025 at 1:11 PM
Our bioavailable strontium baseline for Corsica is out! ⁸⁷Sr/⁸⁶Sr ranges from 0.7075 to 0.7169 and was established from 245 plant & soil leachate samples from 125 sites.
Check out the article here lnkd.in/e6pDJFCY
and the dataset can be downloaded from the IsoArcH database here lnkd.in/eFNS5Xbw
Check out the article here lnkd.in/e6pDJFCY
and the dataset can be downloaded from the IsoArcH database here lnkd.in/eFNS5Xbw
Reposted by Malte Willmes
Scientists!
@skypeascientist.bsky.social matches scientists with classrooms, libraries, & more for virtual Q&As! It's easy and fun!
We are looking for 750 more volunteers by 8/15
If you're down to chat with 1-5 classrooms this semester, sign up here
www.skypeascientist.com/sign-up.html
@skypeascientist.bsky.social matches scientists with classrooms, libraries, & more for virtual Q&As! It's easy and fun!
We are looking for 750 more volunteers by 8/15
If you're down to chat with 1-5 classrooms this semester, sign up here
www.skypeascientist.com/sign-up.html
August 7, 2025 at 3:10 PM
Scientists!
@skypeascientist.bsky.social matches scientists with classrooms, libraries, & more for virtual Q&As! It's easy and fun!
We are looking for 750 more volunteers by 8/15
If you're down to chat with 1-5 classrooms this semester, sign up here
www.skypeascientist.com/sign-up.html
@skypeascientist.bsky.social matches scientists with classrooms, libraries, & more for virtual Q&As! It's easy and fun!
We are looking for 750 more volunteers by 8/15
If you're down to chat with 1-5 classrooms this semester, sign up here
www.skypeascientist.com/sign-up.html
Great news article highlighting our work on the Guadalupe River in California. Really gratefull to all the volunteers collecting samples and caring about fish. calsport.org/learning-fro...
Learning from fish: the importance of nonprofits’ research projects
Nonprofits’ research projects on fish serve multiple purposes. They serve an impetus to improve restoration efforts and manage hatcheries better. They make a case for reintroducing species in areas…
calsport.org
August 1, 2025 at 5:25 AM
Great news article highlighting our work on the Guadalupe River in California. Really gratefull to all the volunteers collecting samples and caring about fish. calsport.org/learning-fro...
A piece of good news: www.opb.org/article/2025...
Indigenous youth prepare for the first descent down the Klamath River after dam removal
On Thursday, dozens of young kayakers from a variety of Indigenous tribes will embark on the first source-to-sea descent of the Klamath River since the country’s largest dam removal project was comple...
www.opb.org
July 4, 2025 at 12:48 PM
A piece of good news: www.opb.org/article/2025...
Reposted by Malte Willmes
This year, traps will be installed in 63 Norwegian rivers to remove pink salmon before they are able to spawn. New publication assessing these extraordinary measures, based on experiences two years ago: reabic.net/journals/mbi/2025/2/MBI_2025_Thorstad_etal.pdf @ninanatureresearch.bsky.social
July 3, 2025 at 9:57 PM
This year, traps will be installed in 63 Norwegian rivers to remove pink salmon before they are able to spawn. New publication assessing these extraordinary measures, based on experiences two years ago: reabic.net/journals/mbi/2025/2/MBI_2025_Thorstad_etal.pdf @ninanatureresearch.bsky.social
Reposted by Malte Willmes
🐦 Early bird reminder! 🚨
The deadline for early bird registration for the #ICESASC25 is fast approaching!
✨ Secure your spot while early bird rates are still available!
📝 Register today to join us in Klaipėda on 15-18 September: bit.ly/4ldurjP
The deadline for early bird registration for the #ICESASC25 is fast approaching!
✨ Secure your spot while early bird rates are still available!
📝 Register today to join us in Klaipėda on 15-18 September: bit.ly/4ldurjP
July 4, 2025 at 12:29 PM
🐦 Early bird reminder! 🚨
The deadline for early bird registration for the #ICESASC25 is fast approaching!
✨ Secure your spot while early bird rates are still available!
📝 Register today to join us in Klaipėda on 15-18 September: bit.ly/4ldurjP
The deadline for early bird registration for the #ICESASC25 is fast approaching!
✨ Secure your spot while early bird rates are still available!
📝 Register today to join us in Klaipėda on 15-18 September: bit.ly/4ldurjP
Blogpost about our work tracking the establishment of Chinook salmon in a restored watershed. Lead Lauren Hitt did an amazing job combining field observations and otoliths! californiawaterblog.com/2025/06/29/b...
Build it, and they will come: Early evidence for establishment of Chinook salmon in Putah Creek, CA
By Lauren G. Hitt, Malte Willmes, Mackenzie C. Miner, Max Stevenson, Carson A. Jeffres, Robert A. Lusardi, Nann A. Fangue, and Andrew L. Rypel Figure 1. Putah Creek during salmon spawning seas…
californiawaterblog.com
June 30, 2025 at 11:42 AM
Blogpost about our work tracking the establishment of Chinook salmon in a restored watershed. Lead Lauren Hitt did an amazing job combining field observations and otoliths! californiawaterblog.com/2025/06/29/b...
Reposted by Malte Willmes
AFS joined other science, conservation, and outdoor organizations in a "Statement on Federal Public Lands Transfer, Sale, and Exchange." The current Senate budget reconciliation bill requires federal agencies to sell 2-3 million acres in 11 western states. Read more: fisheries.org/2025/06/stat...
Statement on Federal Public Lands Transfer, Sale, and Exchange - American Fisheries Society
American Fisheries Society ● American Fly Fishing Trade Association ● Angler Action Foundation ● Archery Trade Association ● Backcountry Hunters & Anglers
fisheries.org
June 16, 2025 at 9:24 PM
AFS joined other science, conservation, and outdoor organizations in a "Statement on Federal Public Lands Transfer, Sale, and Exchange." The current Senate budget reconciliation bill requires federal agencies to sell 2-3 million acres in 11 western states. Read more: fisheries.org/2025/06/stat...
Excited to be back working with sturgeon finrays from California. Trying to estimate age 🔬 isnt easy but these high quality and beautiful images sure help!
May 30, 2025 at 9:44 AM
Excited to be back working with sturgeon finrays from California. Trying to estimate age 🔬 isnt easy but these high quality and beautiful images sure help!
Reposted by Malte Willmes
New article on land use efficiency of renewable energy in Norway. Production density (GWh/km2) was highest for small hydropower and low for land-based wind. Storage hydropower needed to balance wind power at 0.2/1.0 TWh. Led by M.S. Kenawi with collaborators at NTNU and NINA. doi.org/10.1016/j.re...
May 27, 2025 at 8:38 AM
New article on land use efficiency of renewable energy in Norway. Production density (GWh/km2) was highest for small hydropower and low for land-based wind. Storage hydropower needed to balance wind power at 0.2/1.0 TWh. Led by M.S. Kenawi with collaborators at NTNU and NINA. doi.org/10.1016/j.re...
Reposted by Malte Willmes
We tend to think about catastrophic things when we think of biodiversity change, like the extinction of a species. But biodiversity change can be much more insidious than this. A lot of important changes go unnoticed. But these can be precursors to much more problematic changes.
Dive in for more 👇
Dive in for more 👇
Change is afoot, but not always how you expect
Biodiversity is changing all the time, but not necessarily in headline catching ways
predirections.substack.com
February 17, 2025 at 7:18 AM
We tend to think about catastrophic things when we think of biodiversity change, like the extinction of a species. But biodiversity change can be much more insidious than this. A lot of important changes go unnoticed. But these can be precursors to much more problematic changes.
Dive in for more 👇
Dive in for more 👇
Reposted by Malte Willmes
#ThingsWithRings! Read this new @uk.theconversation.com article about some of the surprising biological archives out there, and what we can use them for... theconversation.com/most-animals...
#otoliths #archaeology, #forensics #fish #sclerochronology #biochronology @universityofessex.bsky.social
#otoliths #archaeology, #forensics #fish #sclerochronology #biochronology @universityofessex.bsky.social
Most animals have their own version of tree rings – here’s how we biologists use them to help species thrive
From whale earwax to bird feathers, almost all organisms keep a record of their existence.
theconversation.com
February 11, 2025 at 7:49 PM
#ThingsWithRings! Read this new @uk.theconversation.com article about some of the surprising biological archives out there, and what we can use them for... theconversation.com/most-animals...
#otoliths #archaeology, #forensics #fish #sclerochronology #biochronology @universityofessex.bsky.social
#otoliths #archaeology, #forensics #fish #sclerochronology #biochronology @universityofessex.bsky.social
Reposted by Malte Willmes
Was out this week in the Alviso Marsh to collect Longfin Smelt for UC Davis culture program. Weather was waaaaay too nice for January.
January 25, 2025 at 3:51 PM
Was out this week in the Alviso Marsh to collect Longfin Smelt for UC Davis culture program. Weather was waaaaay too nice for January.
Reposted by Malte Willmes
Hot off the press: A fitness-based indicator for the effect of aquaculture-produced salmon lice on wild sea trout. doi.org/10.1093/ices... @ninanatureresearch.bsky.social
January 9, 2025 at 1:53 PM
Hot off the press: A fitness-based indicator for the effect of aquaculture-produced salmon lice on wild sea trout. doi.org/10.1093/ices... @ninanatureresearch.bsky.social
Reposted by Malte Willmes
Work with us? Postdoc position in Arctic coastal carbon cycling at NINA’s Department for Arctic Ecology in Tromsø nina-english.attract.reachmee.com/jobs/65-post...
Norwegian Institute for Nature Research | Postdoctoral position in Arctic coastal carbon cycling
Introduction Applications are invited for a two-year postdoctoral research associate position related to Arctic coastal carbon cycling, in conjunction with a Horizon EU project (“POMP: Polar Ocean Mi...
nina-english.attract.reachmee.com
January 9, 2025 at 8:31 AM
Work with us? Postdoc position in Arctic coastal carbon cycling at NINA’s Department for Arctic Ecology in Tromsø nina-english.attract.reachmee.com/jobs/65-post...
Reposted by Malte Willmes
Are you a fish telemetry practitioner? The 7th International Conference on Fish Telemetry will take place June 8-13, 2025 in Traverse City, Michigan, USA. The conference website is now live for abstract submission and details on the venue. Help spread the word. event.fourwaves.com/7thicft/pages
International Conference on Fish Telemetry (7th ICFT)
Fourwaves - International Conference on Fish Telemetry (7th ICFT)
event.fourwaves.com
December 4, 2024 at 3:31 PM
Are you a fish telemetry practitioner? The 7th International Conference on Fish Telemetry will take place June 8-13, 2025 in Traverse City, Michigan, USA. The conference website is now live for abstract submission and details on the venue. Help spread the word. event.fourwaves.com/7thicft/pages
Stuck on an R problem so decided to go for a longer dog walk. R problem is still there but the view of the fjord was beautiful.
December 3, 2024 at 9:12 AM
Stuck on an R problem so decided to go for a longer dog walk. R problem is still there but the view of the fjord was beautiful.
November 28, 2024 at 4:05 PM
Reposted by Malte Willmes
Sea Grant is accepting applications for NOAA Fisheries-Sea Grant
Graduate fellowships in population and ecosystem dynamics & marine resource economics. Deadline = Jan. 23. Applicant guides at lnkd.in/dyggpSR9
Graduate fellowships in population and ecosystem dynamics & marine resource economics. Deadline = Jan. 23. Applicant guides at lnkd.in/dyggpSR9
November 24, 2024 at 6:12 PM
Sea Grant is accepting applications for NOAA Fisheries-Sea Grant
Graduate fellowships in population and ecosystem dynamics & marine resource economics. Deadline = Jan. 23. Applicant guides at lnkd.in/dyggpSR9
Graduate fellowships in population and ecosystem dynamics & marine resource economics. Deadline = Jan. 23. Applicant guides at lnkd.in/dyggpSR9