Finally, the last chapter of my thesis published. Check it out if you are interested in ecology, the subarctic, fells and reindeer: onlinelibrary.wiley.com/doi/10.1111/...

Historical Corrals in Fennoscandia Reveal Divergent Legacies of Concentrated Reindeer Densities Between Continental and Suboceanic Tundra

Historical reindeer corrals in Fennoscandian tundra showed that the legacies of concentrated reindeer densities varied between geobotanical districts. While high graminoid abundance always persisted,...

onlinelibrary.wiley.com

--Paper-- Fires of Unusual Size: Future of Extreme and Emerging Wildfire in a Warming United States (2020–2060) Disproportionate growth in maximum fire size suggests that changes in fire weather will amplify extreme events beyond increases in ignition frequency alone www.mdpi.com/2571-6255/9/...

Open positions! PhD and postdoc projects on RS, snow modelling, arctic-alpine hydrology & ecology ❄️🌿🌡️💧 3-yr positions with assistant prof @niittynen.bsky.social @oulu.fi ! See links below and apply by 3.5.2026. oulunyliopisto.varbi.com/fi/what:job/... oulunyliopisto.varbi.com/fi/what:job/...

Doctoral Researcher, Arctic-alpine hydrology and ecology

We are now looking for a Doctoral Researcher in Arctic-alpine hydrology and ecology for a 3-year fixed-term position to join us in the Faculty of Technology, Water, Energy and Environmental Engineerin

oulunyliopisto.varbi.com

New publication! Does vegetation cover and height lower soil temperatures in the high-Arctic? 🌱🌡️ We show that effect size depends both on the functional group and weather conditions 🌿🌞 Paper: Sil Schuuring et al. 2026 AAAR doi.org/10.1080/1523...

High Arctic vegetation lowers soil temperatures on sunny days despite low stature

The impact of vegetation on soil temperatures in low Arctic and boreal regions is well documented, where dense vegetation reduces soil temperatures. However, equivalent empirical evidence for influ...

doi.org

New article! By Määttänen, @mariahallfors.bsky.social & me :-)

Ecography@ecography.bsky.social · 4mo ago

Geodiversity is an inseparable but underutilized aspect of ecological connectivity assessments under climate change vist.ly/4x6nk #BiodiversityConservation #LieteratureReview

New PhD opportunities! Call for thirty (30) PhD positions at RESDOC programme of the University of Helsinki will open in June 2026, and the positions begin in January 2027. The applicants will propose their own PhD project topics relevant to RESDOC. Stay tuned for details!

New preprint! There is substantial spatial heterogeneity in growing season dynamics across northern environments, and we show this for Fennoscandia 2020-2024 🌡️🌡️🌡️ We found great variation in growing season onset and documented record warm summers 🥵@mikarantane.bsky.social @niittynen.bsky.social

Mika Rantanen@mikarantane.bsky.social · 4mo ago

Did you know that the onset date of growing season in northern tundra can vary by up to 40 days even at fine (~100 metres) spatial scales? This and other new information about growing season dynamics in northern Fennoscandia in our new preprint: www.researchsquare.com/article/rs-8...

New publication! Do leaf traits vary in time? 🌿🍃☘️ We sampled 6 traits of 11 species over 15 weeks and found that traits vary greatly, and every growth form followed their own pattern 🦄 Species rank remained somewhat same! @niittynen.bsky.social 🌱 @oikosjournal.bsky.social 🌱 doi.org/10.1002/oik.11849

Proud supervisor moment! Aino-Maija Määttänen published her first PhD article!! 🥳 Määttänen et al. 2026 @ecography.bsky.social Congrats to Aino-Maija, and congrats to us supervisors @mariahallfors.bsky.social 😎https://nsojournals.onlinelibrary.wiley.com/doi/10.1002/ecog.07768

Extended submission deadline! Spread the good news! And make sure to drop an abstract by 1.3.2026 at www.meb-network.com/meb-2026 ❄️🌡️💧🌱

Microclimate Ecology & Biogeography (MEB) conference@mebconf.bsky.social · 6mo ago

We just extended the talk/poster abstract submission deadline for the next international microclimate conference! You can now register until March 1st at meb-network.com/meb-2026/ Thank you for your great contributions so far! 🌅

Pre-defence symposium hosted by @josephinecouet.bsky.social! The Biodiversity Change research group is invited to give a lab talk ☘️🌿🍃 Come see all the cool stuff by PhD researchers Aino-Maija Määttänen, Camilla Reinikainen and Adam Williamson, and postdoc @adm0n.bsky.social ❄️🌡️💧

Aleksi Lehikoinen@aksulehikoinen.bsky.social · 6mo ago

Symposium "Species on the move" next Thr in Viikki @helsinki.fi Great speakers Maria Delgado, @juliakemppinen.bsky.social @andreasantangeli.bsky.social @emmamarjakangas.bsky.social! Organised by @josephinecouet.bsky.social who will defend her PhD thesis on Friday! @hkilabornithology.bsky.social

Ecologists! Give me ideas where to publish a registered report on plant-microclimate experiments :-) It is hard to find OA journals that are society-owned and read by ecologists ☘️💚🌿💚🍃

Ecologists! Give me ideas where to publish beautiful plant functional trait datasets :-) Criteria: OA journals that are society-owned and read by ecologists ☘️💚🌿💚🍃

Registration open! Pack your talks, posters and sunhats for Montpellier, France 🌴🌞🏖️ This is the 3rd edition of the best conference on the planet - and of all time. And yes, I am completely biased as the organiser of the previous edition in Helsinki 😎 meb-network.com/meb-2026/

Rémy Beugnon@remybeugnon.bsky.social · 9mo ago

🎉 Registration is now open for MEB2026 – the 3rd Microclimate Ecology & Biogeography Conference! 📅 June 1–5, 2026 📍 Montpellier, France 🇫🇷 This edition highlights terrestrial and aquatic microclimates. 🔗 meb-network.com/meb-2026 #MEB2026 #Microclimate #Ecology #Biogeography #Conference

One week to go! I am recruiting a postdoc, call ends October 7 🍃🌿☘️ In ecology, University of Helsinki is the leading university in Finland and the Nordics and the fifth-best in Europe (ShangaiRanking's 2024). And for 8 years in a row, Finland is still the happiest country in the world :-)

Julia Kemppinen@juliakemppinen.bsky.social · 11mo ago

I am recruiting a postdoctoral researcher to conduct experiments on tundra plants and microclimates 🌱🌡️💧❄️ Call ends October 7! jobs.helsinki.fi/job/Helsinki...

Extended deadline! Submissions welcomed until 1st December to the npj biodiversity collection: Impacts of Global Change on Polar Terrestrial Biodiversity 🐻‍❄️🐧 Edited by: @annebeejay.bsky.social, Daly Noll Vergara, Luis Pertierra and me www.nature.com/collections/...

Impacts of Global Change on Polar Terrestrial Biodiversity

This collection examines how human activities and global change stressors are transforming the composition and functioning of terrestrial Arctic and Antarctic ...

nature.com

I am recruiting a postdoctoral researcher to conduct experiments on tundra plants and microclimates 🌱🌡️💧❄️ Call ends October 7! jobs.helsinki.fi/job/Helsinki...

Postdoctoral Researcher, Biodiversity Change

Postdoctoral Researcher, Biodiversity Change

jobs.helsinki.fi

I made new friends this summer ☘️🌿🍃

Dr. Mariana García Criado@nanitundra.bsky.social · 11mo ago

A snapshot of our expedition to Finnish Lapland this summer, featuring bogs, bugs, a pink hula hoop, and of course, bryophytes and lichens 🌿 Thanks to funders @ec.europa.eu via POLARIN and #MSCActions, and to my brilliant colleagues @miguelvilloslada.bsky.social et al. for keeping morale high!

New article! To what extent community-level knowledge on species abundances helps in predicting species traits? 🌿☘️🍃 We used joint species-trait distribution modeling to link species abundances to trait variation. By Nerea Abrego, @niittynen.bsky.social, me & Otso Ovaskainen doi.org/10.1002/ecy....

I will be placing my first ever Amazon order next week 🤓

Martin A. Nuñez@martin-nunez.bsky.social · last yr.

Just got the final proofs of my book💓 Available on Amazon worldwide next week Very exciting! I’ve packed into it everything I’ve learned about writing and publishing over the past 20 years I really hope it helps many jump over the writing and publishing barriers💪

New preprint! How do leaf functional traits vary within a growing season? 🌿🍃☘️ We sampled 6 traits of 11 species over 15 weeks, and found that traits vary greatly, and every growth form followed their own pattern 🦄 Species rank remained somewhat same! @niittynen.bsky.social doi.org/10.22541/au....

Art exhibition: Whose nature? Our artist-scientist group Saxifraga has a collaborative display at Jyväskylä Art Museum, Finland 17.5.–7.9.2025. Our work involves over a thousand samples of the beautiful Arctic flora @niittynen.bsky.social 🌿☘️🍃 Welcome! www.jyvaskyla.fi/en/jyvaskyla...

Whose Nature? – On Shared Trails

17.5.–7.9.2025Nature and forests are deeply embedded in Finnish identity and remain central to the visual language of Finnish art. Yet our relationship with nature is far from unambiguous — while its ...

jyvaskyla.fi

New article! How nutrient inputs from seabird colonies affect plant traits and communities? 🐧 Plants closest to the nesting sites, were taller and had higher resource-acquisitive trait values, such as larger and thicker leaves and higher leaf nutrient contents ☘️🍃🌿 doi.org/10.1111/1365...

@audhalbritter.bsky.social · last yr.

Our article on "Marine-derived nutrients shape the functional composition of High Arctic plant communities" is finally out 🐧🦆🌱🌾💩🌊🏔️: besjournals.onlinelibrary.wiley.com/doi/full/10....

I am recruiting a doctoral researcher to conduct research on tundra plants and microclimates 🌱🌡️💧❄️ Call ends April 25! jobs.helsinki.fi/job/Helsinki...

Doctoral Researcher, Biodiversity Change

Doctoral Researcher, Biodiversity Change

jobs.helsinki.fi