Jarno Vanhatalo
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jarnovanhatalo.bsky.social
Jarno Vanhatalo
@jarnovanhatalo.bsky.social

Professor in University of Helsinki. Working on Bayesian statistics, statistical ecology and environmental sciences.

Environmental science 60%
Computer science 19%

This work was made possible by Karel Kaurila - my PhD student who will defend his thesis in a month.

I will also present this in ISBA world meeting this year.

3/3

We show that including expert information into an SDM can
1) improve predictions
2) inform on experts expertise and skill
3) provide a cost-efficient alternative to surveys

We also suggest that expert elicitation within SDMs can help in stakeholder engagement in management applications.

2/3

Ever wondered how to use supra-Bayesian approach in species distribution modeling (SMDs). Well we present a framework for it and exemplify it with real data on fish reproduction area estimation.

nsojournals.onlinelibrary.wiley.com/doi/10.1002/...
1/3
Species distribution modeling with expert elicitation and Bayesian calibration
Species distribution models (SDM) are key tools in ecology, conservation, and natural resources management. They are traditionally trained with data on direct species observations. However, if collec....
nsojournals.onlinelibrary.wiley.com

Reposted by Jarno Vanhatalo

Open Postdoctoral Researcher position in Biodiversity Economics for a new collaboration between @rececochange.bsky.social and Environmental and resource economics group @helsinki.fi
DL 18 February

jobs.helsinki.fi/job/Helsinki...
Postdoctoral Researcher in Biodiversity Economics
Postdoctoral Researcher in Biodiversity Economics
jobs.helsinki.fi

Kohta jälleen mukana viemässä Suomen luontotiedon kehittämistä eteenpäin.

Reposted by Jarno Vanhatalo

Olemme mukana Priodiversity LIFE:n ja Lukkin järjestämässä Luontotietopäivässä 22.1.2026! @jarnovanhatalo.bsky.social kertoo aamusessiossa tutkimuksen näkökulmia monimuotoisuusseurantoihin ja niiden kehittämiseen. Tilaisuuden tarkempi ohjelma täällä: www.metsa.fi/projekti/pri...
Luontoseurantojen kehittäminen | Metsähallitus
Luontoseurantojen kehittäminen -työpaketissa vahvistetaan luonnon tilaa koskevaa tietoa tuottavien, toimittavien ja käyttävien organisaatioiden ja asiantuntijoiden välistä yhteistyötä.
www.metsa.fi

We had planning days in Lammi biological station this week. Lots of good thoughts developed. Some of us also dipped into icy lake from sauna.
Greetings from the EnvStat Winter Workshop held at the Lammi biological station! ❄️ We at the Environmental and Ecological Statistics group focus on ecological and environmental change research, statistical methods development, and supporting environmental management and decision-making.

Reposted by Jarno Vanhatalo

Greetings from the EnvStat Winter Workshop held at the Lammi biological station! ❄️ We at the Environmental and Ecological Statistics group focus on ecological and environmental change research, statistical methods development, and supporting environmental management and decision-making.

There is a very cool postdoc position in the EnvStat group supervised by Elina Numminen.

jobs.helsinki.fi/job/Helsinki...
Postdoctoral Researcher in Statistical Ecology and Evolution
Postdoctoral Researcher in Statistical Ecology and Evolution
jobs.helsinki.fi

Reposted by Jarno Vanhatalo

We’re kicking off the year with the first REC newsletter —featuring recent publications, projects, and upcoming events! Read it here: mailchi.mp/97ed6942f5b8...

2) With Elina Numminen we received consortium funding from the Research Council of Finland for research in "Statistical models and monitoring designs to assess spatiotemporal dynamics of species"
research.fi/en/results/f...

2/2
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Read more about the funding decision in Research.fi.
research.fi

Its been a busy end of the year but I want to share news on two exciting new projects:

1) The joint consortium between @rececochange.bsky.social and @luke.fi received funding from the Research Council of Finland's targeted funding for research into forest biomass.
research.fi/en/results/f...

1/2
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Read more about the funding decision in Research.fi.
research.fi
Congratulations to Tomas Roslin who yesterday gave his inaugural lecture @helsinki.fi, here with Dean @fishcongen.bsky.social joining the ceremony! All four @rececochange.bsky.social PIs are now back in Finland and full professors - we couldn’t be happier 🥳!!!

Reposted by Jarno Vanhatalo

Miten hyönteisten runsautta voidaan arvioida? 🐝 Ovatko niiden määrät vähenemässä? 🦗 Miksi sen tietäminen on tärkeää? 🐜 REC:n professorit Tomas Roslin ja Jarno Vanhatalo vastaavat YLEn luontotoimittaja Minna Pyykön kysymyksiin. Kuuntele haastattelu alta!
Kuinka paljon hyönteisiä maailmassa on? | Minna Pyykön maailma
Miten hyönteisten runsautta voidaan arvioida? Ovatko niiden määrät vähenemässä? ja miksi sen tietäminen on tärkeää? Minna Pyykkö kävi Viikissä metsäretkellä terrestrisen ekosysteemiekologian professor...
areena.yle.fi

I thought it would be nice to let you all know:

@emyguilbault.bsky.social 's recent paper was featured as a research highlight in the Journal of Animal Ecology:
besjournals.onlinelibrary.wiley.com/doi/10.1111/...

👍 Emy
besjournals.onlinelibrary.wiley.com

There is an interesting PhD position in the CS department of UH:

Doctoral Researcher In Machine-Learning, Statistics and Data-Centric Engineering

jobs.helsinki.fi/job/Helsinki...
Doctoral Researcher In Machine-Learning, Statistics and Data-Centric Engineering
Doctoral Researcher In Machine-Learning, Statistics and Data-Centric Engineering
jobs.helsinki.fi

NordStat will be in Helsinki in 1-4 June, 2026. Website and preliminary program have been published:
www.helsinki.fi/en/conferenc...
30th Nordic Conference in Mathematical Statistics | University of Helsinki
1-4 June 2026, University of Helsinki, Finland
www.helsinki.fi

A reminder. You have still about a week to apply to these postdoc positions in
👉 biodiversity science
👉 genetic indicator assessment
👉 ecological statistics

jobs.helsinki.fi/job/Helsinki...

Reposted by Jarno Vanhatalo

📍Observer bias is a known challenge when modeling presence-only data, which many methods address. Using a virtual observer approach, we investigated and tailored observer bias correction of two main observer behaviours: explorers vs followers.
▶️ www.sciencedirect.com/science/arti...
Explorers vs. followers: A behavioural approach to spatial bias correction in species distribution modelling
In recent years, the increase in data availability through citizen science data collection has raised questions about the quality of this data. Specie…
www.sciencedirect.com

Reposted by Jarno Vanhatalo

Kartoittajamme ovat jälleen uurastaneet Ahvenanmaan maastossa laskemassa täpläverkkoperhosen toukkapesiä.

Kartoitusten puoliväli on ohitettu ja hyvältä näyttää!

Toukkapesiä on löytynyt jo yli 1600 eli kokonaissumma tulee olemaan moninkertainen huonoon viime vuoteen verrattuna! 🐛

Reposted by Jarno Vanhatalo

Interested but want to learn more about us before applying? Check out our Instagram (@rececochange) and Youtube (@rec-researchcentreforecolo141) channels!

Reposted by Jarno Vanhatalo

We’re hiring a Project Researcher/ Postdoc to study long-term changes in estuarine fish communities across France.
-Analyze large-scale datasets
-Model biodiversity & body size trends
-Link community changes to global change & human pressures
FR: jobs.inrae.fr/ot-27373
EN: jobs.inrae.fr/en/ot-27374
Chargé-e de recherches : Changements à long terme dans les communautés de poissons estuariens
Vous serez accueilli-e au sein de l’Unité de Recherche Écosystèmes Aquatiques et Changements Globaux (UR EABX : https://eabx.bordeaux-aquitaine.hub.inrae.fr/qui-sommes-nous/l-unite-eabx), située à Cestas, près de Bordeaux. Cette unité de recherche fait partie du Centre INRAE Bordeaux–Nouvelle Aquitaine.Les recherches menées par l’UR EABX visent à fournir des connaissances, développer des méthodologies et améliorer des outils pour définir et comprendre l’état et la dynamique des écosystèmes aquatiques d’eau douce (estuaires, marais côtiers, lacs et rivières). Cela passe par l’évaluation des réponses de ces écosystèmes et de leurs espèces clés — en particulier les poissons diadromes, estuariens et marins euryhalins, ainsi que les plantes aquatiques — face à diverses pressions d’origine humaine (par exemple, la pêche, la fragmentation des habitats, la pollution, le changement climatique).L’équipe Fonctionnement et Restauration des Écosystèmes Estuariens et Populations Migratrices Amphihalines (FREEMA) conduit des recherches écologiques sur la réponse des communautés de poissons aux contraintes environnementales et aux pressions anthropiques locales et globales. Ces recherches se concentrent principalement sur la compréhension des liens entre la structure et la dynamique de ces communautés et le fonctionnement écologique global des écosystèmes sous contraintes environnementales. Des outils de bioindication sont largement utilisés au sein de l’unité pour réaliser des diagnostics écologiques. Par ailleurs, la restauration des écosystèmes aquatiques dégradés — notamment les estuaires et les habitats associés comme les zones humides — occupe une place croissante dans les activités de recherche de FREEMA.Nous recherchons un-e chercheur-se motivé-e (Ph.D.) pour rejoindre notre équipe dans le but d’évaluer les changements à long terme des communautés de poissons estuariens à grande échelle spatiale et temporelle. Le/la candidat(e) retenu(e) s’appuiera sur des jeux de données nationaux pour étudier comment la richesse spécifique et la répartition des tailles dans les communautés de poissons estuariens ont évolué au fil du temps et selon les gradients environnementaux. Un aspect clé de la recherche sera de relier ces changements observés aux évolutions environnementales et aux pressions anthropiques, telles que les variations de température, de salinité et d’activités humaines. Ce poste offre l’opportunité de contribuer à des recherches à fort impact à l’interface de l’écologie des communautés, de la biologie du changement global et des sciences de la conservation, apportant des connaissances cruciales pour la gestion et la préservation des écosystèmes estuariens.Vous serez plus particulièrement en charge de :Organiser et analyser de grands jeux de données complexes sur les communautés de poissons estuariens en FranceDévelopper et appliquer des modèles statistiques avancés pour évaluer les changements de richesse spécifique et de distribution des taillesInterpréter les résultats dans le contexte des gradients environnementaux et du changement globalPrésenter les résultats lors de conférences scientifiquesPréparer des manuscrits de haute qualité pour des revues internationales à comité de lecture
jobs.inrae.fr

Reposted by Emily G. Simmonds

We are seeking a postdoctoral researcher in statistics to develop methods for analyzing large scale biodiversity and ecosystem function data at the University of Helsinki.

This is a great opportunity for someone who wants to do advanced Bayesian modeling with direct link to real world applications.
📢 Post doc! Want to join our team?

We are looking for 3 post docs in biodiversity science, genetic indicator assessment, and ecological statistics for a fixed term of 2 years!

Come unravel the drivers and consequences of global change on biodiversity with us!

DL 24.9.
#universityofhelsinki
3 Post doc positions in biodiversity science, genetic indicator assessment and ecological statistics
3 Post doc positions in biodiversity science, genetic indicator assessment and ecological statistics
jobs.helsinki.fi

Reposted by Jarno Vanhatalo

📢 Post doc! Want to join our team?

We are looking for 3 post docs in biodiversity science, genetic indicator assessment, and ecological statistics for a fixed term of 2 years!

Come unravel the drivers and consequences of global change on biodiversity with us!

DL 24.9.
#universityofhelsinki
3 Post doc positions in biodiversity science, genetic indicator assessment and ecological statistics
3 Post doc positions in biodiversity science, genetic indicator assessment and ecological statistics
jobs.helsinki.fi

We are recruiting university lecturer in biostatistics to the Faculty of Biological and Environmental Sciences at the University of Helsinki.

This is an excellent position in an excellent community with many possibilities also for research collaboration!

jobs.helsinki.fi/job/Helsinki...
University Lecturer in Biostatistics
University Lecturer in Biostatistics
jobs.helsinki.fi
We are recruiting‼️A permanent university lecturer position in BIOSTATISTICS is available at @helsinki.fi Faculty of Biological and Environmental Sciences. Great colleagues, excellent infrastructures and startup support 🙌🏻
DL 14 September

jobs.helsinki.fi/job/Helsinki...
University Lecturer in Biostatistics
University Lecturer in Biostatistics
jobs.helsinki.fi
Understanding #biodiversity patterns: Dive into the dual pressure that #climate and #habitat change have on Finnish moth communities in our recent blog post:
animalecologyinfocus.com/2025/08/19/c...
@emyguilbault.bsky.social
@rececochange.bsky.social
🦋🌍🧪
🚨 Just out in Nature Communications from my current work with fantastic collaborators @rececochange.bsky.social !

We show that moth communities are experiencing an overall “warming,” with a clear latitudinal pattern: extinction in the north and colonisation in the south.
doi.org/10.1038/s414...
Recent community warming of moths in Finland is driven by extinction in the north and colonisation in the south - Nature Communications
As Finland’s climate warms, cold-adapted moths are disappearing in the north while warm-loving species move in from the south. This shift in insect communities highlights the threat climate change pos...
doi.org

We compared effects of land-use and climate on Finnish moth biodiversity with @emyguilbault.bsky.social, @rececochange.bsky.social and our excellent collaborators. Both are important but the context matters which is more important.

Look👇for more

besjournals.onlinelibrary.wiley.com/doi/10.1111/...

Reposted by Jarno Vanhatalo

Tällaiset uutiset eivät ole Suomen lajiston kannalta yhdentekeviä. ☀️🌡

Viimeaikaisessa tutkimuksessamme havaitsimme, että viileään ilmastoon sopeutuneet lintu- ja perhoslajit ovat jo harvinaistuneet ja siirtyneet pohjoisemmaksi.

www.is.fi/kotimaa/art-...

Tutkimus 👉 www.pnas.org/doi/10.1073/...
Suomessa tehdään nyt hellehistoriaa
Suomessa on käynnissä helleputki, joka jää suurella todennäköisyydellä historian kirjoihin.
www.is.fi