Riikka Rinnan
@riikkarinnan.bsky.social
2.7K followers 910 following 120 posts
Prof. Ecosystem-Atmosphere Interactions Director, Center for Volatile Interactions, Univ. Copenhagen 🇩🇰🇫🇮 Climate change, soil carbon, plant-soil interactions, Arctic ecosystems 🌍🌿🦠🫧❄️💧☀️☁️
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Reposted by Riikka Rinnan
nanitundra.bsky.social
🌲 Boreal-tundra species drive Arctic plant borealization 🌲

Our new study in #EcologyLetters quantifies tundra plant borealization, assesses its main drivers and identifies the species & traits contributing to borealization.

doi.org/10.1111/ele....

🧵 (1/6) 🌐🧪🌱🌍
Illustration of a branch of Betula glandulosa (Resin birch). Illustration by Alberto S. Ballesteros (@asbillustration.bsky.social).
Reposted by Riikka Rinnan
voltcenter.bsky.social
Every year on week 37 @voltcenter.bsky.social goes away for two days of science, fun, inspiration and team building. Here are some of the many highlights in thread:
riikkarinnan.bsky.social
📣New paper📣
We measured #VOC & #CO2 fluxes from 3 ponds in a peatland forest using floating chambers. Understanding of freshwater ecosystems as VOC sources is poor, so this work led by Y. Qin, published in #ASLO_LO provides important new data.

doi.org/10.1002/lno....

@dg.dk @voltcenter.bsky.social
Floating chamber measurements Researcher working with floating chambers
Reposted by Riikka Rinnan
voltcenter.bsky.social
Monday mornings are for breakfast journal clubs. 😋🤓
At @voltcenter.bsky.social we started the week with a discussion on #microbial #ecological strategies, led by postdoc Jonathan Donhauser.
Reposted by Riikka Rinnan
voltcenter.bsky.social
Clean-up day at BIO!🧹 VOLT members came together to organize and clean our shared spaces 💻🔬🧪. With teamwork, enthusiasm (and cake!), we now have refreshed workspaces to support our projects.
Reposted by Riikka Rinnan
voltcenter.bsky.social
#DHLrace day! The @voltcenter.bsky.social team is ready and in high spirits. Bring on those 25k per team! 🏃‍♀️🏃💨💪
Reposted by Riikka Rinnan
nasmillelarkemejia.bsky.social
Another late night in the lab… and between sampling points I made this inspired by my #Sphagnum #moss floating in my vials #uArctic_project #scienceart #midnightart @voltcenter.bsky.social
Reposted by Riikka Rinnan
voltcenter.bsky.social
We are now (mostly) all done with holiday and field work, and we kick off being back in the office with a breakfast journal club hosted by postdoc Mehrshad Foroughan on new insights in #climate #science.
How is your lab coming back into the swing of things?
Reposted by Riikka Rinnan
voltcenter.bsky.social
Today we welcomed Professor Sándor Gonda from the University of Debrecen, for a guest talk on plant-microbe interactions at the plant metabolome level in horseradish. He shared interesting insights on a species that most of us had never studied before! 🌱
riikkarinnan.bsky.social
I am surprised, deeply honored, and thrilled to share I've been appointed as a Lead Author for the @ipcc.bsky.social Seventh Assessment Report (AR7 WGI)!

I will be contributing to Chapter 4, "Advances in process understanding of Earth system changes" - a topic close to my heart.
Reposted by Riikka Rinnan
voltcenter.bsky.social
Meet Mehrshad, a PostDoc at VOLT researching #VOC exchanges between the #ocean and the #atmosphere 🌊☁️. Using high-frequency measurements from a remote field site, he focuses on understanding how various physical and biological factors affect these exchanges.
Meet the scientist - Mehrshad Foroughan (Postdoc)
YouTube video by VOLT - Center for Volatile Interactions
youtu.be
Reposted by Riikka Rinnan
nasmillelarkemejia.bsky.social
This is my first time using a #PTR-TOF to track isoprene consumption over time… huge thanks to @voltcenter.bsky.social! 🤓
In the previous image, the black peaks represent #12C isoprene and the red ones show #13C isoprene. Concentrations are around 5–10 ppmv.
🏔️ spectra using 95% labelled 13C-isoprene
Reposted by Riikka Rinnan
maxplanck.de
Director at Max Planck - a unique position! The Open Call for Expressions of Interest in Max Planck Directorships is open now and can be submitted by the 31st of October 2025. ➡️ mpg.de/directors - Please share the Open Call among potential candidates.
Open Call for Expressions of Interest in Max Planck Directorships:
Expressions of interest can be submitted until 31 October 2025.
Reposted by Riikka Rinnan
jcamthrash.bsky.social
Volatilomic complexity of three Northern Greenland bacterial isolates across a salt gradient www.biorxiv.org/content/10.1... #jcampubs
riikkarinnan.bsky.social
Peatland VOC flux measurements in the beautiful #StoreMosseNationalPark. Nice collaboration between @yijiao.bsky.social @voltcenter.bsky.social and @unpeatable.bsky.social.

Funding from @villumfonden.bsky.social @dg.dk
Reposted by Riikka Rinnan
yijiao.bsky.social
Field season for team @voltcenter.bsky.social @riikkarinnan.bsky.social @dddwbbtl.bsky.social at #StoreMosse, southern Sweden’s largest active raised bog! We’re tracking how vegetation, water table, and microclimate shape #VOC exchange in #peatland, supported by #VillumFonden.
riikkarinnan.bsky.social
What a cool retro train or what do you think?
#FieldWorkTravel in Sweden
Reposted by Riikka Rinnan
voltcenter.bsky.social
The BBQ was preceded by a PhD mid-term talk by @martacontreras.bsky.social on the effects of #climatechange on #plant-produced #VOCs. It seems our PhD students have just started, and some are now 14 months away from finishing!
Reposted by Riikka Rinnan
voltcenter.bsky.social
The sun is shining, and the field work and holiday season are here. But before that, we celebrate 1 more year of VOLT success with our summer BBQ. This time, with a very special guest, collaborator @noahfierer.bsky.social!
riikkarinnan.bsky.social
This looks cool... sorry... HOT!
science.org
As the world warms, plants in natural ecosystems and agricultural settings find ways to respond to the heat.

In a new special issue of Science, researchers examine how heat affects plants at multiple scales, from the molecular level to the biosphere. scim.ag/44cSw3Z
Infrared imaging shows heat levels in sun-exposed leaves of Alstonia scholaris from the Australian Wet Tropics. As climate change increases temperatures and the severity of heat waves, both natural ecosystems and agricultural plants are increasingly affected by heat. Examining heat responses at cellular, genetic, physiological, and ecosystem scales, this special issue explores how plants sense and respond to high temperatures.
riikkarinnan.bsky.social
I am sure Amanda will be thrilled to hear 🤩
riikkarinnan.bsky.social
Amanda Ammentorp Pedersen did a fantastic job discussing her MSc project at the thesis defence held this week. Amanda's work focused on how Salix herbacea responds to climate warming along a snow melt gradient in Greenland. Stay tuned for a publication later. :)
@voltcenter.bsky.social