New paper - improving the eel migration route in a hydropower regulated river Our new paper on downstream migration of European eel (Anguilla anguilla) is out, and the main finding is surprisingly simple: a small tweak to a hydropower intake can make a big difference for eel su...

Or find the summary here:

www.bergentelemetry.com/post/new-pap...

New paper 🚨
Retrofitting Fosstveit hydropower station with an inclined rack + surface bypass increased survival of downstream-migrating European eels from ~50–70% to 100% reaching the river mouth.
Promising solution for this critically endangered species.
onlinelibrary.wiley.com/doi/pdf/10.1...

Second tagging campaign for ghost sharks When late November 2025 arrived, we headed out again to try to tag more chimaeras. Divers tend to spot chimaeras in the shallow bays during winter, often at 30 meters or less. We didn’t catch any indi...

We’ve completed our second season with chimaera tagging! And we caught something very cool 👀🦈 Curious about what? Find out here www.bergentelemetry.com/post/trackin...

#SOSF_GhostTrack
#NFR_PUFFINS

Ever wondered if staring is an effective method for capturing fish? It is not - but find out how we managed to capture and tag trout in Bergen city center here 🎣
www.bergentelemetry.com/post/trackin...

#NFR_PUFFINS #RFF_BOATS #Tracking #Telemetry #SalmoTrutta

A ghost shark released after being tagged with an acoustic tag! Can’t wait to see the movement data we are getting from this mysterious species 🦈

#SOSF_GhostTrack
#NFR_PUFFINS
@lottesdahlmo.bsky.social
@saveourseas.bsky.social

#Chimaeramonstrosa #ghostsharks

Check out our first acoustic telemetry paper from the #NFR_LOST project here: doi.org/10.1093/ices... 🚨🦈

Or read a summary on our website: www.bergentelemetry.com/post/new-pap...

#NFR_NorTrack #NFR_DTOTrack

An Experimental Test of Hydropower Entrainment Risk for Subadult Sea‐Run Brown Trout (Aka Blenkje; Salmo trutta) Brown trout play an important role in the northeastern Atlantic aquatic ecosystems, moving between freshwater and marine environments to maximize fitness across their lives. The blenkje (aka finnock)...

Interested to see if anadromous brown trout can escape a hydropower tunnel? Read our paper here: doi.org/10.1002/eco....

Or the paper summary here: www.bergentelemetry.com/post/new-pap...

#NFR_LaKES

Wohoo! Another two chimaera monstrosa tagged tonight 🤩 The coloration is beautiful! Thanks to @saveourseas.bsky.social for funding the #SOSF_GhostTrack project! We’re going out again tomorrow! @bergentelemetry.bsky.social

Tagging eel in the PUFFINS project In November 2025, we tagged european eel for our RCN-funded project, PUFFINS. The aim of our work is to better understand how eels behave and use habitat, particularly in urban environments. The Europ...

How do European eels use urban habitats? 🐟 Our team began tagging eel in November - starting in a tiny pond in the city center that is connected to the fjord. We're excited to see their movement and behavior. Read more about the tagging here: www.bergentelemetry.com/post/tagging...
#NFR_PUFFINS

Tagging eel in the PUFFINS project In November 2025, we tagged european eel for our RCN-funded project, PUFFINS. The aim of our work is to better understand how eels behave and use habitat, particularly in urban environments. The Europ...

How do European eels use urban habitats? 🐟 Our team began tagging eel in November - starting in a tiny pond in the city center that is connected to the fjord. We're excited to see their movement and behavior. Read more about the tagging here: www.bergentelemetry.com/post/tagging...
#NFR_PUFFINS

Interested in fish tracking? VLIZ is hiring!! 🐟

Teaching in Svalbard For the second year, we have been invited to guest lecture for students in the Arctic Population Ecology (AB-204) course led by Dr. Larissa Beumer at the University Centre in Svalbard (UNIS). Our them...

For the past 2 years we've guest lectured in the Arctic Population Ecology course at University Centre in Svalbard (UNIS), giving students both theoretical and practical experience with acoustic telemetry. Read more about it here:
www.bergentelemetry.com/post/teachin...

Summarizing this year's fieldwork in BOATS and PUFFINS As the main bulk of field work in BOATS and PUFFINS is coming to a close, we look back at lovely days at Puddefjorden and Store Lungegårdsvannet which can only be described with one word: successful. ...

It's been some busy months in Bergen City! Read about our field season in the BOATS/PUFFINS projects where we're tracking Atlantic cod, pollock and European lobster to follow their movement as the sea bed is restored www.bergentelemetry.com/post/summari...

#NFR_PUFFINS #RFF_BOATS

We hosted a workshop in Finse a month ago discussing alpine lake dynamics and fish ecology. Read more about the #FF_COLD project and workshop here: www.bergentelemetry.com/post/alpine-...

Thanks to everyone who joined!

During this year’s field season in the high Arctic, this polar bear checked the fish net for us🐟❄️ Read more about our field season for the #NFR_NICE project - tracking salmonids in Svalbard!
www.bergentelemetry.com/post/2025-fi...

We hosted a workshop in Finse a month ago discussing alpine lake dynamics and fish ecology. Read more about the #FF_COLD project and workshop here: www.bergentelemetry.com/post/alpine-...

Thanks to everyone who joined!

Went out trying to catch and tag Chimaera monstrosa, ghostsharks, for the #SOSF_GhostTrack / #NFR_PUFFINS projects. Didn’t manage to catch any unfortunately, but we did catch a beautiful blackmouth catshark 🦈 We’ll try again next week!
@saveourseas.bsky.social
@bergentelemetry.bsky.social

Tagged some sea trout (Salmo trutta) Friday evening for our #RFF_BOATS project. Will hopefully get some cool positioning data from the bay once they leave the river! 🐟
@bergentelemetry.bsky.social

During this year’s field season in the high Arctic, this polar bear checked the fish net for us🐟❄️ Read more about our field season for the #NFR_NICE project - tracking salmonids in Svalbard!
www.bergentelemetry.com/post/2025-fi...

Summarizing this year's fieldwork in BOATS and PUFFINS As the main bulk of field work in BOATS and PUFFINS is coming to a close, we look back at lovely days at Puddefjorden and Store Lungegårdsvannet which can only be described with one word: successful. ...

It's been some busy months in Bergen City! Read about our field season in the BOATS/PUFFINS projects where we're tracking Atlantic cod, pollock and European lobster to follow their movement as the sea bed is restored www.bergentelemetry.com/post/summari...

#NFR_PUFFINS #RFF_BOATS

It's international #ghostshark day! So exciting to study the behaviour of Chimaera monstrosa in Norwegian fjords -contributing to filling important knowledge gaps about their ecology. Thanks to @saveourseas.bsky.social for funding the #SOSF_GhostTrack project. @bergentelemetry.bsky.social

💡Claudia works as a data manager for the European Tracking Network, she mainly supports European researchers to upload and access their ETN data, and makes sure that ETN stays FAIR, up-to-date with community standards and available in other data repositories such as OBIS. #EEA2025

🦈Lotte works in the animal movement and behavioural ecology team of VLIZ. She investigates seasonal presence and hotspots of fish in the North Sea, using acoustic telemetry. She is also involved in the European Tracking Network, which connects fish tracking researchers all over Europe. #EEA2025

🌊 New acoustic array deployed in the Fundian Channel! This fall, our telemetry team worked offshore south of Yarmouth, NS, installing 18 acoustic receivers to monitor aquatic species in this ecologically rich region.

Two New NFR Projects Funded: Exploring Arctic Resilience and Cod Evolution We’re thrilled to announce that BTN will receive funding for two major research projects through the Norwegian Research Council (NFR). These projects - CARE-COD and ROPES - will deepen our understandi...

We’re thrilled to announce two new NFR-funded tracking projects! #NFR_CARECOD explores cod evolution and adaptation in Norway’s fjords, while #NFR_ROPES investigates Arctic resilience and ecosystem tipping points.
Read more about both projects here: www.bergentelemetry.com/post/two-new...

Amazing Friday out on the fjord - 8 Atlantic cod tagged! 🐟☀️ With sediment dumping and hydropower changes planned in the area, we’re collecting crucial before data to see how cod behaviour and habitat use shift as the fjord environment changes.

We've been out popping up acoustic release receivers for fine-scale positioning of thornback rays in our beautiful fjords. Several million detections to work with over the past year! Read more here: www.bergentelemetry.com/post/a-year-...

#trackingnotslacking #NFR_LOST #NFR_NorTrack #NFR_DTOTrack

Interested in tracking data and fine-scale
#positioning? Check out our new paper using multilateralization to track brown trout in a hydropower regulated lake in western Norway! 🚨 Read it here: doi.org/10.1111/eff.... 🐟
or check out our website summary:
www.bergentelemetry.com/post/new-pap...

PhD candidate Jessica Robichaud at Cooke lab at @carleton.ca is visiting us for a month to help with field work. Today, she presented her work for our lab. She is using acoustic telemetry to track permit in the Florida keys! So interesting to see some of her findings! 🐟

@sjcfishy.bsky.social

After the workshop, Saron and Erlend also joined fieldwork with the Lennox lab at Dalhousie University, including tracking work with turtles, mackerel, and smolts. Read more about their stay here:
www.bergentelemetry.com/post/visitin...