UCPH Section for Freshwater Biology

Epilithic Algal and Meiofaunal Assemblages of Arctic/Alpine Lakes and Streams Along Latitudinal and Environmental Gradients in Scandinavia Epilithic biofilms along a latitudinal gradient of Arctic/alpine lakes and streams were analysed for their composition of algae (incl. cyanobacteria) and meiofaunal assemblages and correlated thes...

New Freshwater Biology paper on arctic & alpine lakes and streams in Sweden. Clear lake–stream contrasts in algae and meiofauna highlight the key role of biofilms in food webs. Read: doi.org/10.1111/fwb....
#Freshwater #ArcticResearch
@kirstenseesternc.bsky.social

Harmonization of aggregated freshwater biotic data to support continental and global assessment Biodiversity loss and conservation are increasingly coming into focus in global policy fora, requiring information and assessments at wider spatial and temporal scales than previously considered. Howe...

New PLOS Water paper co-authored by Kirsten S. Christoffersen!
A major spin-off from the 2019 Arctic Freshwater Biodiversity Report by Arctic Council and CAFF.
Read it: journals.plos.org/water/articl...
#ArcticResearch #CAFF
@kirstenseesternc.bsky.social

🎉 Our paper “The world’s oldest man-made biological experiment” is Editor’s Choice and on the January cover of Ecography!
📖 Read it here: nsojournals.onlinelibrary.wiley.com/doi/10.1002/...
📸 Photo: Khamla Inkhavilay

Weak Effects From Human Impact on Composition and Trophic Structure of Fish Communities in a Tropical Lowland River System Myanmar is a biodiversity hotspot and holds at least 570 different freshwater fish species with a high amount of endemism. Nevertheless, freshwater systems in Myanmar are highly threatened by anth...

New paper out! We studied how nutrient enrichment and catchment degradation affect fish communities in tropical Myanmar streams — and found surprisingly weak responses, suggesting fish are poor bio-indicators in these systems.
onlinelibrary.wiley.com/doi/10.1111/...

🚨Open call to all our early-career friends involved in collaborative/ECR-lead projects to join this interesting session at the upcoming ASLO-SIL meeting in Montreal 2026!

Hope to see many of you there 💦💙

The students are also affected by layoffs at the Faculty of Science We fear cancelled courses and poorer quality of education, and we don't think the management acknowledges the gravity of the situation.

The coming layoffs will inevitably affect the quality of our teaching, and we deeply regret the impact this will have on our students. The Study Board for Biological Sciences has articulated their concerns clearly in this opinion piece from UNIavisen.
uniavisen.dk/en/the-stude...

Biologi boykotter rektor: »Vi ser ingen grund til, at han kommer« Samtlige sektionsledere på Biologisk Institut har skrevet til rektor David Dreyer Lassen, at et planlagt møde med ham »ikke tjener noget formål« i lyset af besparelserne på SCIENCE. Rektor har aflyst ...

The employees at the Dept. of Biology have decided to cancel the the planned meeting with the Rector.
The cancellation reflects the growing concern among staff at SCIENCE about the announced layoffs and the lack of genuine dialogue with university leadership.
uniavisen.dk/biologi-boyk...

PhD fellowship in microbial Volatile Organic Compound exchange in Arctic glacier ecosystems

❗Job alert❗
VOLT is looking PhD students for 2 exciting projects, please apply or share with your network!
#PhD fellowship in #microbial #Volatile Organic Compound exchange in #Arctic #glacier #ecosystems: employment.ku.dk/phd/?show=16...

Got inspired by all the fantastic research at #gfoe2025? Save the date for an even larger gathering of excellence in #ecology and #evolution at the joint #NSO2026 and #gfoe2026 meeting with @gfoesoc.bsky.social! See you on 14-17 Sep 2026 in Denmark! nordicsocietyoikos.glueup.com/event/nordic...

🎉 Congratulations to Juan and Tobias for receiving the Best Oral Presentation and Best Poster Presentation awards at #ISPLORE2025JP! 🌱 Fantastic recognition of their excellent research and presentations — well deserved.
Thanks to @isplore.bsky.social for supporting early career researchers.

👏 Congratulations to Ole Pedersen on receiving the first Rens Voesenek Award at #ISPLORE2025JP! 🌱🌊

We are proud to see his work recognized by the @isplore.bsky.social community.

Beautifully engaging and Ted-talk worthy lecture by the first Rens Voesenek awardee Ole Pedersen at #ISPLORE2025JP 🌱🌊 Ole contributed significantly to our community, including all his work on oxygen dynamics in plants, especially in the field (and ocean!).

Nutrient dynamics following 50 years of reduced loading in the large and shallow Lake Arresø - Hydrobiologia Motivated by a citizens group to improve the ecological quality in Denmark’s largest lake, we examined 50 years of measurements to evaluate the scope for improvement. We found that external inputs in ...

New paper in Hydrobiologia!
Lake Arresø shows how 50 yrs of nutrient management and sewage treatment cut Phosphorus inputs by 90% — yet eutrophication persists due to sediment resuspension. Real recovery will require reducing farm runoff further.
🔗 doi.org/10.1007/s107...

Exciting week at IMC 2025 in Innsbruck 🌍🏔️
Bhumika gave a talk on Global Mountain Spring Ecosystems, while Dean convened The Aquatic Biodiversity of Mountain Waterscapes.
With 1200+ participants, this leading mountain research conference was full of inspiring talks, networking & special events. #IMC

Applications open! ❄️ KU’s Arctic Biology Field Course 2026 takes students to Greenland to study freshwater ecosystems: fish, algae mats, predator–prey interactions & more. 🌊🐟🌿
👉 Apply by Oct 24: kurser.ku.dk/course/nbik1...
@kirstenseesternc.bsky.social

Fieldwork anywhere includes the risk of getting your feet wet! 🥾💧😉

Big welcome to Ema, our new Postdoc! He’ll spend the next 2 years with us on the CyaNoServices project, studying how effects of harmful cyanobacterial blooms ripple out from ponds to affect insects — and the ecosystems that depend on them.
His fieldwork spans Sweden, Spain, and Brazil 🌍

Great fun at the annual DHL Relay Run. This year's highlights:
🏃‍♂️Walking team beat last year’s time by 1 minute
👶Youngest participant in the history of our Lab
⏱️New personal best on the 5K
A wonderful evening of exercise, fun, and socializing outside the lab! 💚

Lab Clean-up Day done! ✅
Old samples were disposed of, lab is a lot tidier now, and our coffee machine has never been cleaner! ☕👌
All part of our LEAF Gold sustainability journey 🌿
Rounded off the day with an outdoor lunch with the rest of the BIO Department = perfect day! 😊💚
#labsustainability

New in L&O: This study from South Greenland shows that lake & stream autotrophic biofilms are shaped by different drivers. With climate change, biomass may increase, reshaping Arctic food webs. Congrats to Sanne on her final PhD paper! 🌿 doi.org/10.1002/lno....
@sannemdt.bsky.social
@aslo.org

Our Freshwater Biology field courses wrapped up today 🌊 Students explored lakes & streams around Silkeborg, combining fieldwork, lab work & tradition at Salten Skov field station. A summer of science, teamwork & nature! #FreshwaterBiology #FieldCourse💚💦

🌾 Big kickoff in Kenya for our Danida-funded project on climate-smart, low-emission rice! Partners from Kenya, Tanzania, Philippines, and DK aim to boost drought resilience & reduce methane. More than a project—it’s a shared commitment to a better future. #RiceResearch #ClimateSmart #Danida

Science at altitude! 🏔💧
Bhumika and Dean joined colleagues from Kathmandu Uni for an unforgettable research trip to Nepal. The Carlsberg-funded “Mustang” project, the goal is to better understand freshwater biodiversity, water quality & human impact in this beautiful and understudied landscape.

🌿 Our lab is now LEAF Gold certified! 🥇

Thanks to teamwork, smarter protocols, and great coordination from our technicians, we have taken major steps toward sustainability.

Freshwater biology begins with fresh thinking 💧

#LEAFGold #UCPH_GreenLabs #LabSustainability

🚀 New & novel!
Two of our BSc students are developing an innovative method to sample soil greenhouse gases using silicone tubing + Li-Cor analysis.
It’s exciting to see real scientific advances made at the BSc level—this work is already generating great data! 🌱
#StudentResearch #SoilGHG

🎓🌿 New MSc! Yesterday, Rikke Frederiksen defended her thesis on macroinvertebrates in ponds on former farmland. We’re proud to send off a talented and great colleague and wish her all the best in her future endeavors. 🌟 #MScDefense #FreshwaterEcology #NewTalent

🌊 Bubbles matter! 💨
This new paper wraps up Jonas Stage Sø’s PhD work and brings new insights into methane emissions from lakes. The conclusion is that ebullition from lakes often dwarfs diffusive flux — especially at higher temperatures.
link.springer.com/article/10.1...
#methane #Ebullition

🌞 Beautiful day for lake sampling in Northern Zealand!
Yesterday our MSc Freshwater Ecology students collected samples for next week’s lab on plankton & chlorophyll. Science, sunshine & teamwork! 🌊🧪
#FreshwaterEcology #Fieldwork #MSc #Ecology
@janaisanta.bsky.social

✍️ Our updated guide to academic report writing is now available!
Clear advice, useful structure, and the Ten Commandments of good writing.
Perfect for students and supervisors alike. 📚
www1.bio.ku.dk/english/rese...

We joined the Danish OIKOS Meeting 2025 at Aalborg University!
🎤 Talks by Andreas & Claudia
📌 Poster by Tobias on soil inoculation & land restoration
Great to connect & share research! 🌿 #OIKOS2025 #Ecology #Conservation