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Frank Pennekamp @pennekampster.bsky.social · 2d

Thanks to @vojsavagjoni.bsky.social for leading us!

Frank Pennekamp @pennekampster.bsky.social · 2d

Conclusion: Energy use isn't size-independent when environments change and undergoes temporal change. Mediated by species interactions, temperature and biodiversity jointly shape community size structure. This has implications for predicting ecological responses to global warming.

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Frank Pennekamp @pennekampster.bsky.social · 2d

How do these responses change over time? The slope stayed near -0.75 for half of the experiment, then deviated to become shallower. Comparing real communities vs. "no interaction" controls showed that species interactions - not just individual physiology - drive these changing patterns over time.

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Frank Pennekamp @pennekampster.bsky.social · 2d

In species-rich communities, warming favored small protists much more than large ones, steepening the size-abundance slope. At low richness? Temperature had minimal effect. This suggests that complex species interactions amplify thermal effects on community size structure.

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Frank Pennekamp @pennekampster.bsky.social · 2d

Metabolic theory predicts a -0.75 slope: smaller organisms are more abundant. We confirmed this overall pattern across 53 protist communities spanning 1 to 6 species and 15 to 25°C. But here's the caveat: temperature and richness INTERACT to modify this relationship, not just shift the intercept.

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Frank Pennekamp @pennekampster.bsky.social · 2d

Does body size predict abundance the same way in all environments, as predicted by the Metabolic theory of Ecology? Our new study challenges this assumption. Read it here: 📄 doi.org/10.1111/ele....

Biodiversity modulates the cross‐community scaling relationship in changing environments

Organismal abundance typically declines with increasing body size, with metabolic theory predicting a universal size–abundance slope of –0.75. Using protist microcosms across gradients of species ric...

doi.org

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Reposted by Frank Pennekamp

Francesco Polazzo @fancescopolazzo.bsky.social · 6d

New paper out in Ecology Letters!
“The Imbalance of Nature: The Role of Species Environmental Responses for Community Stability”
📖 Read it here: onlinelibrary.wiley.com/doi/10.1111/...

We tried to answer the question: What drives community stability in fluctuating environments?

The Imbalance of Nature: The Role of Species Environmental Responses for Community Stability

This study shows that the distribution of species' fundamental responses to environmental change, quantified by a new metric, imbalance, is a key driver of ecological stability. In a large microcosm ...

onlinelibrary.wiley.com

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Reposted by Frank Pennekamp

Pavel Kratina @kratina.bsky.social · 23d

Job Alert
@qmulsbbs.bsky.social is advertising a position:

Environmental Analytical Facility Technician.

Join our team #ecology, #stable #isotopes, #Mass-spectrometer

Environmental Analytical Facility Technician - QMUL Jobs

ID: 7383. Title: Environmental Analytical Facility Technician. Application Deadline:

qmul-jobs.tal.net

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Frank Pennekamp @pennekampster.bsky.social · Aug 28

Will check it out 😍

Reposted by Frank Pennekamp

Kat Coyte @coytelab.bsky.social · Aug 12

A new 4 year PostDoc position in our lab! Modeling + experiments to explore dynamics of carbon fixing hot-spring microbiomes. Part of an exciting multidisciplinary team with Sophie Nixon, @brockhurstlab.bsky.social & others

Please share & get in touch if interested!

tinyurl.com/e7j7bha3

Research Associate in Microbiome Ecology:Oxford Road

www.jobs.manchester.ac.uk

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Reposted by Frank Pennekamp

Joey Bernhardt @joeybernhardt.bsky.social · Jul 7

✨ The Bernhardt Lab at the University of Guelph is recruiting graduate students for 2026! Join us! We have several fully funded grad positions available ✨

Please spread the word!

www.bernhardtlab.org/join-us

#CSEE2025

A blue poster describing opportunities to join the Bernhardt Lab -- for more information please see https://www.bernhardtlab.org/join-us

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Reposted by Frank Pennekamp

martinlab-uva.bsky.social @martinlab-uva.bsky.social · Jul 4

PhD position in theoretical ecology: Excited to announce an open PhD position in my lab (U. Amsterdam) aimed at exploring how different functional response types emerge from animal movement behaviours. Applications are due July 18th: werkenbij.uva.nl/en/vacancies...

#ecology
#phd

Vacancy — PhD Linking Individual Movement Behaviour and Population Dynamics

Are you in interested in exploring the connection between movement behavior and ecological dynamics? Do you enjoy combining mathematical models and data to understand how ecological systems work? The ...

werkenbij.uva.nl

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Frank Pennekamp @pennekampster.bsky.social · May 20

Another week to apply. Please RT!

Frank Pennekamp @pennekampster.bsky.social · May 14

Are you interested in predator-prey interactions and movement ecology?

I am looking for a PhD student to work on the project "A mechanistic theory of functional responses: zooming into movement behaviour to understand and predict predator-prey interactions"
euraxess.ec.europa.eu/jobs/342402.

PhD student in Ecology (up to 4 years)

The position is funded by the Swiss National Science Foundation project “A mechanistic theory of functional responses: zooming into movement behaviour to understand and predict predator prey interacti...

euraxess.ec.europa.eu

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Frank Pennekamp @pennekampster.bsky.social · May 14

Ciliates! Here is some related work on our model system: onlinelibrary.wiley.com/doi/10.1111/...

Food web context modifies predator foraging and weakens trophic interaction strength

We experimentally quantified the density-dependent effect of a third species on a predator's functional response to understand the underlying processes and long-term consequences of trophic interacti...

onlinelibrary.wiley.com

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Frank Pennekamp @pennekampster.bsky.social · May 14

Please apply, if you are interested in experimental ecology involving microorganisms, 3D tracking, and bridging between data and functional response theory.

The project involves a close collaboration with Prof. Benjamin Martin (University of Amsterdam) and Prof. Andrew Hein (Cornell University).

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Frank Pennekamp @pennekampster.bsky.social · May 14

Are you interested in predator-prey interactions and movement ecology?

I am looking for a PhD student to work on the project "A mechanistic theory of functional responses: zooming into movement behaviour to understand and predict predator-prey interactions"
euraxess.ec.europa.eu/jobs/342402.

PhD student in Ecology (up to 4 years)

The position is funded by the Swiss National Science Foundation project “A mechanistic theory of functional responses: zooming into movement behaviour to understand and predict predator prey interacti...

euraxess.ec.europa.eu

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Reposted by Frank Pennekamp

Remo Ryser @remoryser.bsky.social · Dec 9

Come and join our thematic session on Dynamical Ecological Networks @britishecolsoc.bsky.social on Friday 10:00-12:00 in Auditorium 1A #BES24 #networks #foodwebs #theory
Our speakers are:

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Frank Pennekamp @pennekampster.bsky.social · Dec 8

scholar.google.de/citations?hl...
Dear Timothée, please add me to the feed. Thanks!

Google Scholar Citations

Google Scholar Citations lets you track citations to your publications over time.

scholar.google.de

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Frank Pennekamp @pennekampster.bsky.social · Dec 1

Hi Billur, exciting pack, could you please add me? Thanks!

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Reposted by Frank Pennekamp

Daniel Montoya @danimontoya.bsky.social · Nov 29

Three research assistant positions are now open to work in Community Ecology at the Basque Centre for Climate Change. All info here: info.bc3research.org/2024/11/27/t...

Three field technical assistants - BC3 Basque Centre for Climate Change - Klima Aldaketa Ikergai

The Basque Centre for Climate Change (BC3), offers hree field technical assistants positions to support the research activities in the context of the European Research Council (ERC) project RECODYN (I...

info.bc3research.org

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Reposted by Frank Pennekamp

Blake Matthews @ebmatthews.bsky.social · Nov 27

My commute is ridiculously scenic… Eawag institute on Lake Luzern, Switzerland 🇨🇭. Great place to sabbatical and/or send students for research visits (eg 3-6 months is usually possible).

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Reposted by Frank Pennekamp

Hanna Kokko @kokkonut.bsky.social · Nov 22

🚨JOB 🚨Would a title "Professor of Life History Evolution" suit you? If yes... Become a colleague of us here in Mainz! I am happy to provide more information if this intrigues you.
cms.zdv.uni-mainz.de/karriere/wp-...

cms.zdv.uni-mainz.de

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Reposted by Frank Pennekamp

Cengiz Akandil @cengizakandil.bsky.social · Oct 22

Industrial activity in the Arctic is rapidly increasing and now we can map hotspots of development at pan-Arctic scale. Our latest paper is out.

www.pnas.org/doi/10.1073/...

Oil and gas extraction regions are the hotspots of light-emitting human activity in the Arctic

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Reposted by Frank Pennekamp

Francesco Polazzo @fancescopolazzo.bsky.social · Nov 21

Starting here in the best way: presenting a new paper.
onlinelibrary.wiley.com/doi/10.1111/...

Have a look at our new proposed way of calculating response diversity when multiple environmental drivers change simultaneously.

Measuring the Response Diversity of Ecological Communities Experiencing Multifarious Environmental Change

This study explores how response diversity—variability in species' responses to environmental changes—relates ecological stability under complex, multifactorial environmental shifts. The authors intr...

onlinelibrary.wiley.com

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Reposted by Frank Pennekamp

Sam Yeaman @samyeaman.bsky.social · Oct 7

University of Calgary is hiring an assistant professor in modelling, ecology, and water. Evolutionary biologists with a focus on aquatic organisms/ecosystems and modelling should also apply!
careers.ucalgary.ca/jobs/1497629...

Assistant Professor in Data-Driven Modelling for Ecology and Water Conservation in Calgary, ...

careers.ucalgary.ca

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