Geographer asking ecological questions 🍃☘️🌿 Assistant professor in biodiversity change at University of Helsinki 🏔️ Subject editor at Oikos helsinki.fi/biodiversity-change
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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
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!
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 ❄️🌡️💧🌱
New article! By Määttänen, @mariahallfors.bsky.social & me :-)
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...
Julia Kemppinen
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
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
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/...
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 ❄️🌡️💧
--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/...
