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Emilia Hannula

@ehannula.bsky.social
1.3K followers 750 following 85 posts

Soil ecologist. Fungi, networks, functions. Associate professor at Leiden University, Institute of Environmental Sciences. Mother of two.

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Reposted by Emilia Hannula
NL Institute of Ecology NIOO-KNAW @niooknaw.bsky.social · 05/12/2025
New publication: Functional diversity of #soil microbial communities increases with ecosystem development, by @ehannula.bsky.social and others. #landabandonment #landusechange #carboncycle doi.org/10.1038/s414...
Figure 1 in Ranheim Sveen et al. (2025): "Study design. Distribution of (a) sites across a national successional gradient in Sweden, based on (b) a paired grassland and forest sites comprising (c) managed, recently abandoned, and late successional grasslands together with fully afforested reference sites representing the successional endpoint. Soil samples were gathered in the field and sequenced with (d) amplicon and shotgun metagenomics to yield taxonomic and functional microbial community profiles, with the hypothesis that these would change (e) linearly, unimodally, or with threshold responses to succession. Note that the trends are shown as positive, i.e., with increasing diversity here, but may also be negative."
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Emilia Hannula @ehannula.bsky.social · 26/09/2025
This week 120 soil intact soil cores were collected by Unifarm and PhD candidates Sophie and Robin from our field experiment on the effects of diversifying plant root traits in pastures on C budgets. The cores will be 13CO2 pulse labeled so that we can follow C through the system. #coolstuff #soils
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Emilia Hannula @ehannula.bsky.social · 21/09/2025
Last week we were with students on Schiermonnikkoog. Weather was quite extreme (rain and wind) but still had good mushroom excursions and soil sampling campaigns with engaged students! Exhausted but also inspired by my job and interactions it brings!
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Reposted by Emilia Hannula
Justin Stewart @thecrobe.bsky.social · 19/08/2025
Rethinking microbial carbon use efficiency in soil models. Hint consider microbial anatomy and physiology www.nature.com/articles/s41...
nature.com
Rethinking microbial carbon use efficiency in soil models - Nature Climate Change
Soil models include a key parameter known as carbon use efficiency, which impacts estimates of global carbon storage by determining the flow of carbon into soil pools versus the atmosphere. Microbial-...
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Emilia Hannula @ehannula.bsky.social · 05/09/2025
The peer-review system is broken. But there is no good alternative. I have sent 20+ invites today (5 manuscripts) and gotten already 11 declines and no one has accepted. I have also myself already gotten 7 requests which I declined all (I am busy with the ones I am editing). #academicpublishing
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Emilia Hannula @ehannula.bsky.social · 02/09/2025
Academic year is open! I want to wish all teachers and students an amazing year of learning about the topic but also about yourself! In the official opening of the year of @unileiden.bsky.social we heard a lot about detours in the path leading to self-development. I would also further argue that 1/2
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Emilia Hannula @ehannula.bsky.social · 29/08/2025
Ready for the new academic year with our brand new BSc programme (Science for Sustainable Societies) starting along with academic year on Monday. The holiday was great, and I got fully recharged looking for fungi, hiking with kids, fishing, eating blueberry pies, and meeting friends and relatives.
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Emilia Hannula @ehannula.bsky.social · 07/08/2025
Time to harvest some rucola! They were grown in different microbiomes (inocuated to common sterilized soil). Not to eat (this time) but to analyse microbiomes, metabolites and nutrients. #Soils2Guts #soils #harvesttime
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Emilia Hannula @ehannula.bsky.social · 28/07/2025
We are officially well into one of my favorite seasons: field work season. I do not get to do it often enough but sometimes I am still needed at least to show sampling locations (and take some soil samples...) and water plants.
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Reposted by Emilia Hannula
tcamenzind.bsky.social @tcamenzind.bsky.social · 17/07/2025
Happy to share this big piece on saprobic fungal traits and soil carbon cycling. Great collaboration in the SPP SoilSystems @dfg.de , with Damien Finn, Sören Thiele-Bruhn, Denise Vonhoegen, @mrillig.bsky.social and many others contributing to the study. www.biorxiv.org/content/10.1...
biorxiv.org
What are all these soil fungi doing? Complex carbon use ability as a predictive trait for fungal community functions
Fungal communities in soil play important roles in decomposition processes and soil organic carbon cycling. These communities are tremendously diverse, making it challenging to assign relevant functio...
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Emilia Hannula @ehannula.bsky.social · 17/07/2025
Legacy article from times @niooknaw.bsky.social on legacy of drought on soil fungal communities and functions. Key finding is that communities in bulk soil recover pretty fast while soil C related functions remain changed. Photos of the experiment for attention! doi.org/10.1016/j.so...
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Emilia Hannula @ehannula.bsky.social · 04/07/2025
To have an impact on society, we need to work together. Our broad consortium (Reap2Sow) got funding from NWA-ORC to investigate the environmental and societal impacts and obstacles of transition from animal based protein to plant based protein. Looking forward to working together to make this happen
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Reposted by Emilia Hannula
Ákos T Kovács @evolvedbiofilm.bsky.social · 03/07/2025
Soil fungi influence the relationship between plant diversity and ecosystem multifunctionality manipulating plant species richness/soil fungal diversity in 190 plant communities => measuring 10 ecosystem functions -in @natcomms.nature.com www.nature.com/articles/s41...
nature.com
Soil fungi influence the relationship between plant diversity and ecosystem multifunctionality - Nature Communications
Fungal diversity is critical for ecosystem functioning, yet its role in mediating the relationship between plant diversity and ecosystem multifunctionality remains unclear. This study finds that funga...
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Emilia Hannula @ehannula.bsky.social · 01/07/2025
Yesterday we had 4 thesis presentations and a lovely soil group gathering! Esmee (Bsc) had looked at fungal CUE, Nio (Bsc) worked on fungal melanin and stress, Jacco (Msc) worked on fungal traits and interactions and Arman (Msc) on mycoviruses affecting soil functions. All did amazing (1/2)
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Emilia Hannula @ehannula.bsky.social · 26/06/2025
Happy 71st birthday @niooknaw.bsky.social and thanks for organising an event for alumni. Was nice to see sl many 'old' colleagues (and both of my PhD supervisors) and dance together. Hearing from panel of old directors was very insightful. South side to the win in the tug of war!
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Emilia Hannula @ehannula.bsky.social · 25/06/2025
Could not stop the streak with Soil Biology and Biochemistry. I have published with them in 2010 (felt like 2011), 2013, 2015, 2017, 2019, 2021 (x3), 2023 ... and this week heard that our manuscript got accepted making it come out in 2025. Now on to doing some cool experiments for 2027! 😀
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Emilia Hannula @ehannula.bsky.social · 18/06/2025
Day 2 highlights were the session I chaired in the morning (especially talk by F. Van der Bom on root traits), climbing to a mountain with some grassland scientists, poster presented by PhD candidate S. Planchenault and the party held at the Scottish museum (with loads of dancing). #rhizosphere6
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Emilia Hannula @ehannula.bsky.social · 18/06/2025
Day 3 of #rhizosphere6 and conference fatigue would hit in if talks would not be this interesting. My highlights for today so far were talk by Claudia Knief showing their results on 11C/13C dual labeling, plenary by Ina Meier on hyphosphere and climate and Eva Oburger telling about root exudates.
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Reposted by Emilia Hannula
Borjana Arsova @borjana-a.bsky.social · 16/06/2025
Interactions between organisms in the rhizosphere, the #microbiome and beyond » Dr. Emilia Hannula 🧪🦠🌱 #Rhizosphere6 #UniEdinbourgh #PlantScience
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Reposted by Emilia Hannula
Courtney Herms @courtneyherms.bsky.social · 16/06/2025
Back in the stately McEwan Hall for @ehannula.bsky.social presenting on interactions in the rhizosphere #rhizosphere6
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Emilia Hannula @ehannula.bsky.social · 13/06/2025
One castle in France, 40 (micro) soil scientists, 3 days. What is not to love! #microsoil was one of the best meetings I have ever been to. During the week talked about (microbial) death under the fig tree, pores (and non-excisting) aggregates and about persistence and stability of carbon. #soils
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Reposted by Emilia Hannula
NL Institute of Ecology NIOO-KNAW @niooknaw.bsky.social · 06/06/2025
New publication: Fungal-mediated soil aggregation as a mechanism for #carbonstabilization, by @stevendegoede.bsky.social @ehannula.bsky.social and others. #fungidiversity #carbonsinks #greenhousegas doi.org/10.1093/isme...
Figure 2 in De Goede et al. (2025): "Conceptual model of the continuum of soil aggregation, with underlying mechanisms within the processes deposition/formation, stabilization, and destabilization related to Fig. 1."
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Reposted by Emilia Hannula
Martin A. Nuñez @martin-nunez.bsky.social · 04/06/2025
Register for this free meeting organized by @anapineda.bsky.social for new PI! use this link to register: ifocusandwrite.lpages.co/summit-the-t...
ifocusandwrite.lpages.co
Thriving PI Summit 2025: Systems, Writing & Funding for Principal Investigators
Join the online Thriving PI Summit to learn systems, writing, funding, and resilience strategies for Principal Investigators.
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Emilia Hannula @ehannula.bsky.social · 03/06/2025
Had the pleasure to attend 3 PhD defences in 3 weeks, 'working' in only one of them (hence the 📸 of walking to the hall). For others, as a colleague and co-author. Meanwhile, I have evaluated 3 more as a reader 😀 in the past weeks. Congrats to all new doctors (and all almost there!) #lovemyjob
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Emilia Hannula @ehannula.bsky.social · 03/06/2025
Opinions from fellow academics needed! I am handling a manuscript that seemed very familiar and checked to see that I have indeed reviewed it for another journal end of last year. It got rejected but 2 reviewers wrote many comments to improve the ms. Yet the ms has not changed. What to do? Reject?
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Emilia Hannula @ehannula.bsky.social · 02/06/2025
As a supervisor I often only hear when things go wrong or when there is a problem/question. I rarely hear when things get solved (no news is good news) or that there are good news. That is why in the group meeting I implement 'good news/happy about' round and have weekly meetings with all individual
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Reposted by Emilia Hannula
Suvi Ruuskanen @suviruuskanen.bsky.social · 18/05/2025
3-year #Postdoc position on the role of #genetics and #microbiome on #thermal #physiology in @erc.europa.eu project in my group at @uniofjyvaskyla.bsky.social FIN! We establish #selection lines on quails, collab @btschirren.bsky.social DL 15.7., start Nov25-Jan26 ats.talentadore.com/apply/postdo...
ats.talentadore.com
Postdoctoral Researcher: Contribution of genetic background and gut microbiome on thermal physiology
A post-doctoral Researcher position is available at the Department of Biological and Environmental Sciences, University of Jyväskylä, Finland, in the group of Dr. Suvi Ruuskanen. The post-doctoral res...
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Emilia Hannula @ehannula.bsky.social · 13/05/2025
A review written by PhD candidate (when he was still a Msc student...) @stevendegoede.bsky.social on fungal induced soil aggregation mechanisms and its effects on soil C stocks. Publishing this was a long process, but hope this is helpful for all (especially early careers)! doi.org/10.1093/isme...
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Emilia Hannula @ehannula.bsky.social · 07/05/2025
170(!!!) people representing provinces, cities, farmers, food growers, NGOs, health care organisations, chefs, etc. came together today to talk about soils. Such an amazing atmosphere and overwhelming interest in #soils. Isabel Siles-Asaff (CML) did a great job representing #soils2guts!
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Emilia Hannula @ehannula.bsky.social · 06/05/2025
Looking for a database to functionally assign your 18S (terrestrial)data to trophic groups? Look no further! Our article is published here: doi.org/10.1111/1755... and you can find the database here as a R package: github.com/lentendu/Euk... #soils #eukaryotes #protists #fungi
doi.org
EukFunc: A Holistic Eukaryotic Functional Reference for Automated Profiling of Soil Eukaryotes
The soil eukaryome constitutes a significant portion of Earth's biodiversity that drives major ecosystem functions, such as controlling carbon fluxes and plant performance. Currently, however, we mis...
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Emilia Hannula @ehannula.bsky.social · 02/05/2025
Dear #soil (research) people! Anyone planning on applying for Horizon Soil Mission this round? We would be especially interested in joining the Soil-03 (resilience through management of soil-water nexus) with knowledge on soil biodiversity vs. structure.
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Reposted by Emilia Hannula
Ákos T Kovács @evolvedbiofilm.bsky.social · 01/05/2025
Fungal-mediated soil aggregation as a mechanism for carbon stabilization #ISMEJournal by @stevendegoede.bsky.social, @ehannula.bsky.social, Boris Jansen and Elly Morriën academic.oup.com/ismej/advanc...
academic.oup.com
Fungal-mediated soil aggregation as a mechanism for carbon stabilization
Abstract. Soils can potentially be turned into net carbon sinks for atmospheric carbon to offset anthropogenic greenhouse gas emissions. Occlusion of soil
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Emilia Hannula @ehannula.bsky.social · 29/04/2025
Soil corer, my good old friend. Lovely day to go visit various PhD candidates doing fieldwork or preparing experiments (sending 950kg of soil to gamma-sterilization). Got to do some soil cores myself as well.
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Emilia Hannula @ehannula.bsky.social · 25/04/2025
Headed to Amsterdam today but not for the 'night before King's birthday' but to Aula of University of Amsterdam to attend the inauguration of Sahar El Aidy. She spoke so very philosophically about microbiomes and presented new theories. Truly enjoyed it.
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Emilia Hannula @ehannula.bsky.social · 23/04/2025
My favourite season is here! Fieldwork season! The season when most ecologist get out from their offices to go sample and observe. A few weeks ago, we collected soil samples in the Veluwe region, and more will be collected in other parts in the coming weeks/months. #soils #fieldwork
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Emilia Hannula @ehannula.bsky.social · 14/04/2025
Joined today the protest against cuts in higher education and research in #Wageningen. 2000 people marched together from campus to the city center for speeches (including a speech by the mayor). #stopthecuts
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Franciska de Vries 🟥 @frantecol.bsky.social · 04/04/2025
Mooi artikel in @trouw.nl over het belang van schimmels en ander bodemleven! Met veel aandacht voor ons onderzoek en dat van @tobykiers.bsky.social 😇 www.trouw.nl/duurzaamheid...
Een foto van het artikel in de papieren krant.
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Emilia Hannula @ehannula.bsky.social · 01/04/2025
Yesterday, we organised the first-ever IBL-CML Leiden Soil Ecology event. Over 40 participants can not be wrong: soils are a hot topic in Leiden! From CML soil group PhD candidates Sophie, Isabel, and Ruiqi presented all their research lines. Well done! #soils
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Emilia Hannula @ehannula.bsky.social · 28/03/2025
This week has been hectic in terms of moving around Leiden. Each day, multiple locations (by bike). Seen Gorleaus, Sylvius, van Steenis, sports center (exam), library, Hortus, and 2 Rapenburg addresses. Pictures of today at B. thysiana to sample a fungus growing on >400y old book. #fungi
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Emilia Hannula @ehannula.bsky.social · 27/03/2025
Checking some cultures of #soil #fungi in between all the admin, reviewing, editing, answering doodles, supervising, and meetings. Super cool (dual) culture resembling a woman with curly hair... do you see it as well?
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Emilia Hannula @ehannula.bsky.social · 24/03/2025
Friday, we had a great consortium meeting with Soils2guts consortium in sunny (and blossoming) Amsterdam Science Park. PhDs updated on their progress, and we heard feedback and ideas from stakeholders. In general, we are well on track and have heads full ideas for future! #soils #soils2guts
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Reposted by Emilia Hannula
DrZP @zarahpattison.bsky.social · 19/03/2025
theconversation.com/fungi-are-am...
theconversation.com
Fungi are among the planet’s most important organisms — yet they’re overlooked in conservation strategies
Fungi are essential to our ecosystems, our societies and economies.
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Reposted by Emilia Hannula
Rike Stelkens @stelkens.bsky.social · 18/03/2025
And now, we also have a 2-year postdoc position in the Stelkens Lab! 🧪 If you are interested in parallel evolution, genomics, yeast, and climate adaptation, this could be for you! Please apply through U Stockholm's job platform here: su.varbi.com/en/what:job/...
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Emilia Hannula @ehannula.bsky.social · 17/03/2025
Teaching over for this academic year. Really enjoyed it, and was again super impressed by the talent and passion in students. The course ecosystem ecology made amazing short films based on soil ecology literature #soils and we had a great field excursion to #Polderlab (guided by a farmer).
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Emilia Hannula @ehannula.bsky.social · 10/03/2025
Today I (as an employee and educator in Leiden University) am on strike against budget cuts in higher education and research. We cancelled lectures today and will resume tomorrow to learn more about soils. #soils My day has been filled with sunshine and (unpaid) editorial work...
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Emilia Hannula @ehannula.bsky.social · 12/02/2025
Two great posters from #soils2guts project presented in the #NAEM2025 by Isabel and Marieke. Come chat about soils affecting crop and human health also today!
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Emilia Hannula @ehannula.bsky.social · 11/02/2025
So proud of Ruiqi Wang presenting her (PhD) research on viruses of soil saprotrophic fungi at #NAEM2025 #proudsupervisor
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Emilia Hannula @ehannula.bsky.social · 11/02/2025
Amazing and enormously inspiring talk by dr. Paula Kahumbu on conservation activism, storytelling, and importance of local knowledge and participation to conserve (/save) African biodiversity. Advice to ecology PhD students: be vocal and try to make an impact together with others! #naem2025
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Emilia Hannula @ehannula.bsky.social · 11/02/2025
On the way to #NAEM2025 (by bike of course). So far, it is dry but expecting to encounter rain or snow. I'm really looking forward to seeing all Dutch (and Flemish!) ecologist again! Great programme ahead! Come say hi if you are attending! Points for guessing where I am waiting for a colleague...
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Emilia Hannula @ehannula.bsky.social · 10/02/2025
Trying to revive some older fungal cultures today... one of the cultures (from 2003) is older than the student wanting to use it. Talk about resilience. 🍄🍄🍄🍄
Fungal cultures in glass tubes
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