Riikka Rinnan

Illustration of a branch of Betula glandulosa (Resin birch). Illustration by Alberto S. Ballesteros (@asbillustration.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) 🌐🧪🌱🌍

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:

Floating chamber measurements

Researcher working with floating chambers

📣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

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.

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.

#DHLrace day! The @voltcenter.bsky.social team is ready and in high spirits. Bring on those 25k per team! 🏃‍♀️🏃💨💪

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

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?

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! 🌱

Thank you!💚

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.

📢 Exciting postdoc position in the @kathrinrousk.bsky.social group at @voltcenter.bsky.social 📢

YouTube video by VOLT - Center for Volatile Interactions Meet the scientist - Mehrshad Foroughan (Postdoc)

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.

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

Open Call for Expressions of Interest in Max Planck Directorships: Expressions of interest can be submitted until 31 October 2025.

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.

Volatilomic complexity of three Northern Greenland bacterial isolates across a salt gradient www.biorxiv.org/content/10.1... #jcampubs

The 20 Best Cities To Live In The World, According To A 2025 Report Looking for the best cities to live in the world—including the best places to live in the U.S.? The new Global Liveability Index ranks cities on quality of life and more.

Copenhagen, the best city to live in. We know all about it at @voltcenter.bsky.social - an international bunch living in the happy city.

www.forbes.com/sites/laurab...

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

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.

What a cool retro train or what do you think?
#FieldWorkTravel in Sweden

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!

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!

This looks cool... sorry... HOT!

I am sure Amanda will be thrilled to hear 🤩

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

Faroe Islands scenery

A PhD defense starting and I'm in the evaluation committee. I don't know the two other committee members. And suddenly I realize I haven't even read the thesis. I really need to go to the toilet when the defense starts–and I can't find the way back to the auditorium.

Time for vacation, right?

Thank you so much for contributing, Jogi!

Increased Growth Temperatures Alter Arctic Plant Responses to Heat Wave and Drought

📄 buff.ly/2NU4KiE
@martacontreras.bsky.social @riikkarinnan.bsky.social @lundjing.bsky.social @voltcenter.bsky.social @villumfonden.bsky.social @dg.dk

#biogenic #volatile #organic #compounds #bvocs #arctic #tropical #plants… | Nasmille Larke-Mejía, PhD Wrapping up an inspiring two days at the 1st International Symposium on Volatile Interactions in Ecosystems organised by VOLT - Center for Volatile Interactions held in the stunning auditorium at the...

@voltcenter.bsky.social wrapped up the 1st International Symposium on Volatile Interactions in Ecosystems in Copenhagen!

Special moment for me presenting my work on #uArctic_project isoprene cycling, following the plenary talk & footsteps of my mentor Colin Murrell

www.linkedin.com/posts/nasmil...

Thank you so much for joining and giving fantastic presentations @chriswernerlab.bsky.social!