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Jarno Vanhatalo

@jarnovanhatalo.bsky.social
131 followers 25 following 99 posts

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

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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 14/10/2026
This was again a joint work at @rececochange.bsky.social, and many of our collaborators, led by @emyguilbault.bsky.social. 2/2
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 14/10/2026
We looked at the relative importance of habitat and climate in boreal biodiversity patterns across space, time and taxa. Habitat explains most of biodiversity patterns while patterns between biogeographical regions and years are mainly explained by climate, www.nature.com/articles/s41... 1/2
nature.com
Shifting balance between habitat and climate in boreal biodiversity patterns across space, time and taxa - Nature Communications
Climate and habitat jointly shape species distributions and biodiversity. The authors show that habitat is the main driver of boreal terrestrial biodiversity, while the relative roles of climate and h...
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 08/10/2026
We have a University Lecturer in Ecology position open at the Department of Organismal and Evolutionary Biology at the University of Helsinki: jobs.helsinki.fi/job/Helsinki... The closing date for applications is 6 November 2026 at 23.59 (EET). Please spread the word in your networks.
jobs.helsinki.fi
University Lecturer in Ecology
University Lecturer in Ecology
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 06/10/2026
In search of top talent - the call for new HiLIFE Tenure Track professors is open www.helsinki.fi/en/hilife-he...
helsinki.fi
In search of top talent - the call for new HiLIFE Tenure Track professors is open | HiLIFE – Helsinki Institute of Life Science | University of Helsinki
HiLIFE has initiated a new Tenure Track assistant/associate professor call for autumn 2026, with the aim of recruiting 3 motivated and skilled life scientists from 2027 onwards.
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 01/10/2026
Mikhail Shubin at the #RECseminar presenting their recent article on how environmental drivers shape fish assemblages in the Baltic Sea. 🐟 From 2007-2023, changes in fish communities mirrored projected climate-driven salinity reductions. Read the article: doi.org/10.1093/ices...
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 28/09/2026
📢 Open position in Biodiversity Science The 2-year position focuses on how patterns of species co-occurrence are shifting under global change, using long-term biodiversity datasets and advanced statistics. 📍 Helsinki, Finland | ~€3,700/month 📅 Apply by 19 Oct. jobs.helsinki.fi/job/Helsinki...
jobs.helsinki.fi
Postdoctoral Researcher in Biodiversity Science
Postdoctoral Researcher in Biodiversity Science
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 14/09/2026
Greetings from the EnvStat group retreat in Solvalla, Espoo! We had two productive days of project presentations, brainstorming, and planning for the upcoming half-year — with time for mushroom picking, sauna, and relaxed hangouts along the way.🌳🏠📈 A great foundation for the months ahead!
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 08/09/2026
During the many long term ecological change projects in @rececochange.bsky.social, we have concretely learned how important long term data are. Here some thoughts on the topic 👇 Long-Term Community Data Reveal Ecological and Evolutionary Phenomena - www.annualreviews.org/content/jour...
annualreviews.org
Long-Term Community Data Reveal Ecological and Evolutionary Phenomena
Resolving the ecological and evolutionary processes affecting biodiversity requires long-term community data. By separating short-term variability from directional change and by revealing lags spannin...
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 03/09/2026
Kilpisjärven asemalle perustettiin oma professuuri. Onnea @elinakaarlej.bsky.social www.helsinki.fi/fi/bio-ja-ym...
helsinki.fi
Kilpisjärven biologiselle asemalle professuuri | Bio- ja ympäristötieteellinen tiedekunta | Helsingin yliopisto
Helsingin yliopiston bio- ja ympäristötieteellinen tiedekunta on perustanut Kilpisjärven biologiselle asemalle professuurin. Siihen on valittu akatemiatutkija Elina Kaarlejärvi, joka aloittaa tehtäväs...
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 02/09/2026
RS, and especially very high resolution RS, showed promise for producing benthic habitat maps though. We offer an in-depth comparison of the advantages and disadvantages between the approaches, provide practical guidance on their use and suggest further development and co-use. 3/3
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 02/09/2026
The SDM approach generally outperformed the Sentinel-2-based RS approaches. However, SDMs performed poorly in the Mediterranean Sea likely due to small variability in the available environmental covariates. 2/3
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 02/09/2026
We made a systematic comparison of contemporary remote sensing techniques (RS) and species distribution modelling (SDM) in predicting spatial distribution of coastal habitats in seven European marine areas. www.sciencedirect.com/science/arti... 1/3
sciencedirect.com
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 31/08/2026
This was a joint project together with @deltares.bsky.social and @luke.fi done within the obama-next.eu project and my BEFPREDICT project (cordis.europa.eu/project/id/1...) 3/3
obama-next.eu
OBAMA-NEXT - OBAMA-NEXT’s main goal is to develop a toolbox which generates and delivers the information required to evaluate and communicate the status and trends of marine ecosystems and their biodi...
OBAMA-NEXT’s main goal is to develop a toolbox which generates and delivers the information required to evaluate and communicate the status and trends of marine ecosystems and their biodiversity in an...
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 31/08/2026
We fitted species distribution models for 45 fish taxa and delineated seven regions of common profile (RCP) from the predicted occurrence probabilities. In 2007-2023, marine-associated RCPs retracted westward while brackish and low-salinity assemblages expanded northward and eastward. 2/3
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 31/08/2026
In our latest study we show that Baltic Sea pelagic fish communities have changed their distribution over the past 17 years, consistent with projected climate-driven salinity reductions 👇 Community-level modelling of pelagic fish assemblages... academic.oup.com/icesjms/arti... 1/3
academic.oup.com
Community-level modelling of pelagic fish assemblages in the Baltic Sea reveals temporal shifts and effects of environmental drivers
Abstract. The Baltic Sea is characterised by strong environmental gradients that shape its biodiversity and community structure. Despite a well-established
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Reposted by Jarno Vanhatalo
Anna-Liisa Laine @annaliisalaine.bsky.social · 21/08/2026
Our new study led by Tuuli Rissanen tackles a fundamental challenge in biodiversity monitoring: how do we choose species that tell us something useful about biodiversity change? 🌿 Collaboration between @rececochange.bsky.social @luke.fi doi.org/10.1002/eap....
doi.org
Informing indicator species selection by combining species associations and environmental responses
Biodiversity is changing at an unprecedented pace, underscoring the need for effective and scalable ecological monitoring. Yet selecting which species to monitor remains a major challenge. Indicator ...
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Reposted by Jarno Vanhatalo
Anna-Liisa Laine @annaliisalaine.bsky.social · 10/07/2026
📞 I'll never forget the call telling us our @novo-nordisk.bsky.social Challenge proposal had been funded! 🎉 We're incredibly grateful for €10M to study how biodiversity shapes soil health and resilience across Finland, Sweden & Denmark. 🌱🪱🦠 www.helsinki.fi/en/news/life... @helsinki.fi
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 10/06/2026
You might also be interested in the IPM code for the Baltic ringed seals: github.com/EnvStat/Balt... 4/4
github.com
GitHub - EnvStat/BalticRingedSealIPM: Code to implement the Gulf of Bothnia ringed seal integrated population model
Code to implement the Gulf of Bothnia ringed seal integrated population model - EnvStat/BalticRingedSealIPM
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 10/06/2026
If you want test this model yourself, you can upload all the code and data from the below links: github.com/EnvStat/Balt... 3/4
github.com
GitHub - EnvStat/BalticGreySealIPM
Contribute to EnvStat/BalticGreySealIPM development by creating an account on GitHub.
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 10/06/2026
We provide: • A state–space model for the Baltic grey seal population. • Updated estimate for the current carrying capacity of Baltic grey seals. • Demonstrated effect of herring weight-at-age on seal reproduction. • Analysis of hunting and prey quality scenarios to inform management. 2/4
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 10/06/2026
We built an integrated population dynamics model. This time for Baltic grey seals. It was just published Bayesian integrated population model of Baltic grey seals informs on population carrying capacity and the impact of Baltic herring on reproduction. www.sciencedirect.com/science/arti... 1/4
sciencedirect.com
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 10/06/2026
Metsästys ja silakan koko määrittävät Itämeren harmaahylkeiden kannan kokoa. Uusi digitaalisiin populaatiomalleihin pohjautuva tutkimuksemme tarkastelee Itämeren kantokykyä ja tarjoaa päättäjille raamit metsästyskiintiöiden asettamiseen. www.helsinki.fi/fi/uutiset/e... @jarnovanhatalo.bsky.social
helsinki.fi
Metsästys ja silakan koko muokkaavat olennaisesti harmaahylkeen tulevaisuutta Itämerellä | Helsingin yliopisto
Itämeren kantokyky kestäisi jopa kaksinkertaisen määrän harmaahylkeitä, mutta metsästyskiintiö ja silakan koko vaikuttavat siihen, mihin suuntaan kanta kehittyy. Tutkimus tarkentaa harmaahylkeen kanta...
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 09/06/2026
Minulla on ilo ja kunnia ilmoittaa, että aloitin 1.6. Satakuntalaisen Osakunnan inspehtoorina. Valinta tehtiin jo viime vuoden lopulla ja kevät oli tutustumista tulevaan rooliin. Odotan innolla tulevia vuosia aktiivisen opiskelijayhteisön parissa. satakuntalainenosakunta.fi/fi/
satakuntalainenosakunta.fi
Satakuntalainen Osakunta
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 09/06/2026
This is a great opportunity to do a PhD in Helsinki: www.helsinki.fi/en/research/...
helsinki.fi
RESDOC Project – Training Doctoral Excellence for Resilient and Just Future | University of Helsinki
RESDOC (Resilient and Just Systems Doctoral Project) is an international doctoral training project at the University of Helsinki in Finland. It brings together interdisciplinary and cross-sectoral res...
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 28/05/2026
Link to the original release by the Jane and Aatos Erkko Foundation: jaes.fi/en/releases/...
jaes.fi
Major New Funding for Nature’s Future, Quantum Technology, and Culture - Jane and Aatos Erkko Foundation
The Jane and Aatos Erkko Foundation is supporting eight projects in technology, economics, and culture that seek solutions to some of the key future challenges. The newly approved grants, totaling €11...
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 28/05/2026
🥂€2.5 million funding for our interdisciplinary project that develops new ways to integrate biodiversity and natural capital to societal decision-making. Thank you Jane and Aatos Erkko Foundation and our collaborators @ahlviklassi.bsky.social and Kari Hyytiäinen! www.helsinki.fi/en/news/sust...
helsinki.fi
2.5 million euros awarded for research combining ecology, economics and statistics | University of Helsinki
The Jane and Aatos Erkko Foundation has awarded 2.5 million euros to a University of Helsinki research project aimed at bringing natural capital into decision-making. The interdisciplinary project dev...
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 07/05/2026
We are looking for Ecological Statistician to work on long-term biodiversity and ecosystem functioning data jobs.helsinki.fi/job/Helsinki...
jobs.helsinki.fi
Ecological Statistician
Ecological Statistician
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 17/03/2026
Karel Kaurila defended his thesis on "Hierarchical Bayesian methods for environmental policy planning" last Friday helda.helsinki.fi/items/a6c971... Great to see this journey come to an end successfully. Thank you to Richard Wilkinson for working as a custos.
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 10/03/2026
Tärkeä kannanotto Sykestä www.sttinfo.fi/tiedote/7186...
sttinfo.fi
Suomi tarvitsee viipymättä luonnon monimuotoisuusstrategian | Suomen ympäristökeskus
Luonnon monimuotoisuuden turvaaminen vaatii pitkäjänteistä ja johdonmukaista päätöksentekoa. Tästä syystä luonnonsuojelulaki edellyttää luonnon monimuotoisuusstrategian laatimista. Silti Suomi on jo v...
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 06/02/2026
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
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 06/02/2026
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
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 06/02/2026
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
nsojournals.onlinelibrary.wiley.com
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....
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Reposted by Jarno Vanhatalo
Anna-Liisa Laine @annaliisalaine.bsky.social · 05/02/2026
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...
jobs.helsinki.fi
Postdoctoral Researcher in Biodiversity Economics
Postdoctoral Researcher in Biodiversity Economics
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 22/01/2026
Kohta jälleen mukana viemässä Suomen luontotiedon kehittämistä eteenpäin.
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 16/01/2026
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.
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 15/01/2026
There is a very cool postdoc position in the EnvStat group supervised by Elina Numminen. jobs.helsinki.fi/job/Helsinki...
jobs.helsinki.fi
Postdoctoral Researcher in Statistical Ecology and Evolution
Postdoctoral Researcher in Statistical Ecology and Evolution
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 07/01/2026
We’re kicking off the year with the first REC newsletter —featuring recent publications, projects, and upcoming events! Read it here: mailchi.mp/97ed6942f5b8...
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Reposted by Jarno Vanhatalo
Anna-Liisa Laine @annaliisalaine.bsky.social · 04/12/2025
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 🥳!!!
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 19/12/2025
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
research.fi
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Read more about the funding decision in Research.fi.
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 19/12/2025
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
research.fi
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Read more about the funding decision in Research.fi.
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 20/11/2025
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!
areena.yle.fi
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...
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 01/10/2025
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
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 20/09/2025
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...
jobs.helsinki.fi
Doctoral Researcher In Machine-Learning, Statistics and Data-Centric Engineering
Doctoral Researcher In Machine-Learning, Statistics and Data-Centric Engineering
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 18/09/2025
NordStat will be in Helsinki in 1-4 June, 2026. Website and preliminary program have been published: www.helsinki.fi/en/conferenc...
helsinki.fi
30th Nordic Conference in Mathematical Statistics | University of Helsinki
1-4 June 2026, University of Helsinki, Finland
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Jarno Vanhatalo @jarnovanhatalo.bsky.social · 15/09/2025
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...
jobs.helsinki.fi
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
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Reposted by Jarno Vanhatalo
Anna-Liisa Laine @annaliisalaine.bsky.social · 10/09/2025
A few more days to apply!!!
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Reposted by Jarno Vanhatalo
Research Centre For Ecological Change @rececochange.bsky.social · 09/09/2025
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! 🐛
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Reposted by Jarno Vanhatalo
Emy Guilbault @emyguilbault.bsky.social · 09/09/2025
📍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...
sciencedirect.com
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…
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Reposted by Jarno Vanhatalo
Benjamin Weigel @benjamin-weigel.bsky.social · 05/09/2025
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
jobs.inrae.fr
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
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