Jonas Trepel

@jonastrepel.bsky.social

1.9K followers 480 following 23 posts

Phd student at Aarhus University. Broadly interested in conservation biology, rewilding, megafauna ecology, global change & biodiversity.

Videos

Environmental science 65%

Computer science 18%

Posts Replies Media Videos

Reposted by Brian J. Enquist, Neil Pederson, Jonas Trepel , and 2 more Brian J. Enquist, Neil Pederson, Jonas Trepel, Haley A. Branch, Rafael Candido‐Ribeiro

Sean Michaletz @seanmichaletz.bsky.social · 5d

🍁Funding for new PhD students ($40k/yr) & postdocs ($70k/yr) coming from outside Canada. Contact me if interested in #Ecophysiology at #UBC in #Vancouver! Possible topics: leaf physiology, thermal ecology, microclimate, scaling, tree physiology, forest ecology, more! michaletzlab.org
Please share!

Jonas Trepel @jonastrepel.bsky.social · 8d

Thank you!

Reposted by Ming Ni, Jonas Trepel

Jens-Christian Svenning @jcsvenning.bsky.social · 12d

Happy to see this @econovoau.bsky.social paper out in the new issue of Journal of Animal Ecology - higher herbivore activity is linked to greater herb diversity & plant functional redundancy besjournals.onlinelibrary.wiley.com/doi/epdf/10....
#ECONOVO #Biodiversity #savanna #SouthAfrica #Rewilding

Reposted by Julian Schrader, Jonas Trepel

Joe Atkinson @joe-atkinson.bsky.social · 14d

✨ PhD opportunity studying drought and heatwave effects on threatened plants ✨🔥

Funded by an ARC DECRA awarded to the amazing Dr Ilaíne Matos and co-supervised by Dr Sami Rifai and me!

Limited by the character limit here, so please see the attached flyer for all the details - please share widely!

PhD Opportunity in Plant Ecophysiology – Adelaide University
We are looking for an PhD candidate to join an exciting research project focused on understanding heat and drought combined impacts on threatened plants’ mortality.
Key Objectives:
Describe drought sensitivity in juvenile and mature individuals of threatened plant species.
Disentangle the effects of elevated temperature, soil dryness, and atmospheric water demand on the sensitivity of threatened species to hotter droughts.
Model threatened species’ risk of mortality under current and future hotter droughts.
Eligibility:
Australians and international applicants with a completed Master's degree (GPA > 5.0) and/or a completed 4-year Bachelor with Honours (GPA > 5.0) in Plant Biology or related areas;
Proof of English proficiency (e.g. IELTS score > 6.5 or equivalent qualification), only for applicants who speak English as a second language.
Strong analytical and programming skills in R or Python.
Genuine interest in studying plants with previous experience in plant ecology and/or physiology.
Effective writing skills; a passion for reading, writing, and continually improving as a communicator.
Ability to drive in Australia is desirable but not essential.
Start Date: April 2026 (negotiable)
Duration: 3.5 years
Benefits: PhD scholarship (tax-exempt stipend of $36,500 AUD p.a. + $3,000 AUD p.a. top up);
Higher stipend rate for Aboriginal and Torres Strait Islander candidates ($ 53,608 p.a.);
Relocation allowances for both domestic and international candidates;
Single Overseas Student Health cover for international applicants.
100% tuition fee waiver.
How to Apply:
Email the following documents to ilaine.matos@adelaide.edu.au before the 15th of February 2026. Women and people underrepresented in research are encouraged to apply.
1-page cover letter explaining why you are interested in this position and your previous experiences relevant for this opportunity.
Curriculum Vitae in the Adelaide University format.

Reposted by Juli G. Pausas, Francis Martin, Arthur Geßler , and 4 more Juli G. Pausas, Francis Martin, Arthur Geßler, Patrick A. Jansen, Sami W. Rifai, Markus P. Eichhorn, Jonas Trepel

Caroline Lehmann @caroaceae.bsky.social · 28d

"Bond’s work leaves behind an inconvenient lesson for an era of climate urgency: that speed is not a substitute for understanding, and that good intentions, applied without care, can erase ancient worlds as efficiently as neglect." A beautiful tribute to William Bond. Forever missed by many.

William Bond, defender of grasslands

In recent years, one of the loudest ideas in environmental policy has been that trees are the planet’s universal remedy. Plant enough of them, in enough places, and carbon will be soaked up, water wil...

www.butlernature.com

Jonas Trepel @jonastrepel.bsky.social · Dec 17

Super exciting PhD position on large herbivores, ecosystem functioning and biodiversity conservation in @kampjohannes.bsky.social's fantastic lab in Göttingen @consbiogoe.bsky.social.

Please share widely!

Conservation Biology Göttingen @consbiogoe.bsky.social · Dec 16

Come work with us! #PhD position on #ecosystem and #biodiversity effects of large #herbivores on the Eurasian steppes now announced: www.euraxess.de/jobs/395512

Nice combination of fieldwork and meta-analysis, co-supervised by @jonastrepel.bsky.social and ejlundgren.github.io

Reposted by Jens‐Christian Svenning, Tobias Kuemmerle, Johannes Kamp , and 4 more Jens‐Christian Svenning, Tobias Kuemmerle, Johannes Kamp, Matthias Baumann, Sabina Burrascano, Jonas Trepel, Benjamin Wildermuth

Conservation Biology Göttingen @consbiogoe.bsky.social · Dec 16

Reposted by Jonas Trepel

Bjerknes Center for Climate Research (BCCR) @bjerknes.uib.no · Nov 17

Ecosystem gas fluxes are crucial to water and energy cycling. Fluxes are measured in closed-loop chambers. But how do you deal with the data? An R package by @jogaudard.bsky.social from @unibergen.bsky.social and Bjerknes simplifies processing and comparison. Check it out! 🧪 doi.org/10.1111/2041...

Reposted by Jens‐Christian Svenning, Jonas Trepel, Hansraj Gautam

Journal of Animal Ecology @animalecology.bsky.social · Nov 17

🐘 New research - Large herbivores are linked to higher herbaceous plant diversity and functional redundancy across spatial scales

➡️ buff.ly/zqRgqqo

@jonastrepel.bsky.social @joe-atkinson.bsky.social @andrewabraham.bsky.social @jessekalwij.bsky.social @jcsvenning.bsky.social @econovoau.bsky.social

Jonas Trepel @jonastrepel.bsky.social · Nov 15

Good question! It's essentially a metric for the functional overlap in a community (i.e., how many species share similarish traits), which is thought to link to resilience as functionally similar species may compensate for each other's loss. See e.g., doi.org/10.1002/ecs2....

Does functional redundancy affect ecological stability and resilience? A review and meta‐analysis

In light of rapid shifts in biodiversity associated with human impacts, there is an urgent need to understand how changing patterns in biodiversity impact ecosystem function. Functional redundancy is...

esajournals.onlinelibrary.wiley.com

Reposted by Jens‐Christian Svenning

Jonas Trepel @jonastrepel.bsky.social · Nov 13

Thanks to the great team, including
@joe-atkinson.bsky.social , @andrewabraham.bsky.social, @jessekalwij.bsky.social, @jcsvenning.bsky.social, @econovoau.bsky.social, Rob Buitenwerf, Liza le Roux, Londiwe Mokeona, Michelle Greve, Steven Khosa, Caroline Makofane, Anika Oosthuizen & more! (3/3)

Screenshot of the paper title page, showing the full authorlist: Jonas Trepel, Joe Atkinson, Elizabeth le Roux, Andrew Abraham, Marge Aucamp, Michelle Greve, Marilize Greyling, Jesse Kalwij, Steven Khosa, Lukas Lindenthal, Caroline Makofance, Londiwe Mokoena, Anika Oosthuizen, Bent Rech, Erick Lundgren, Jens-Christian Svenning, Robert Buitenwerf

Reposted by Jens‐Christian Svenning

Jonas Trepel @jonastrepel.bsky.social · Nov 13

higher herbivory intensity in South African savannas increases herbaceous plant richness and functional redundancy. Effects were largely consistent across scales, but strongest at the landscape level, highlighting large herbivores’ role in promoting diversity and ecosystem resilience (2/3)

Graphical abstract for our new paper, showing sketches of two reserves, one with and one without large herbivores. The one with large herbivores has higher herbaceous species richness and functional redundancy.

Reposted by Jens‐Christian Svenning

Jonas Trepel @jonastrepel.bsky.social · Nov 13

Excited to share that my first PhD chapter just got published in @animalecology.bsky.social! You can check it out here: doi.org/10.1111/1365.... Based on fieldwork in the beautiful Waterberg Biosphere Reserve in South Africa, we show that.. (1/3)

Beautiful Sunset in Kaingo Private Game Reserve, one of our fieldsites

A white rhino in Dabchick Wildlife Reserve, one of our fieldsites

Woody savanna landscape in Swebeswebe Nature Reserve, on of our fieldsites

Overview of the reserves in our study sites. Shows the location of 10 included reserves with pictograms indicating the largest herbivore in each.

Reposted by Oliver L. Phillips, Jonas Trepel

Our World in Data @ourworldindata.org · Nov 12

The largest mammals have always been at the greatest risk of extinction – this is still the case today. 🧵

The wipeout of the largest mammals is a global phenomenon that we see across many regions.

Eight small histograms in two columns compare mammal body mass with extinction outcomes. Left column: “Extinctions in the Pleistocene”; right: “Risk of extinction today”. Rows show North America, Australia, Africa, and South America. X-axes are log body mass from tiny to very large.

In the past, most extinctions were among the largest mammals, while small species largely survived.

Today, threat levels still rise with body size: many large mammals are threatened—especially by hunting—while habitat loss and other pressures increasingly affect small and mid-sized species.

Australia and the Americas already lost many big mammals; Africa retains more but many are threatened.

Takeaway: big mammals went first and remain at greatest risk.

Source: Lyons et al. 2004; compiled by Our World in Data. Licensed CC BY (Our World in Data / Hannah Ritchie).

Reposted by Jens‐Christian Svenning, Oliver L. Phillips, Simon L. Lewis , and 19 more Jens‐Christian Svenning, Oliver L. Phillips, Simon L. Lewis, Ana S. L. Rodrigues, Ben Bond‐Lamberty, Mathias Disney, Pieter A. Zuidema, Patrick A. Jansen, Stephen D. Murphy, Tommaso Jucker, Markus P. Eichhorn, Andrew Hacket‐Pain, Ferran Sayol, Darío Martin‐Benito, Shan Kothari, Joan Dudney, Joshua S. Lynn, Jonathan von Oppen, Karl Andraczek, Orlando Schwery, Jonas Trepel, Benjamin Wildermuth

Brian J. Enquist @bjenquist.bsky.social · Oct 21

Please pass along, I’m recruiting PhD students to join our Macroecology Lab @uofa-eeb.bsky.social We study phys ecology, macroecology, biodiversity - spanning scaling, trait-based ecology, theory, comparative biology & ecoinformatics. Several avenues for funding. Please reach out if interested🧪🌐🌾

Reposted by Brian J. Enquist, Jonas Trepel

Joseph Gaudard @jogaudard.bsky.social · Sep 25

My first PhD paper is out!
It describes the fluxible #rstats package, a toolbox to process and quality check #ecosystem #gasfluxes in a reproducible and automated way.

@unibergen.bsky.social @btwnthefjords-uib.bsky.social @bjerknes.uib.no @li-corenv.bsky.social @methodsinecoevol.bsky.social

fluxible: An R package to process ecosystem gas fluxes from closed‐loop chambers in an automated and reproducible way

Measuring ecosystem gas fluxes is crucial to understanding the dynamics of ecosystem water and energy cycling. A common method to measure ecosystem gas fluxes (CO2, CH4, N2O) and to compare experi...

doi.org

Reposted by Tim M. Blackburn, Jonathan von Oppen, Jonas Trepel

Jens-Christian Svenning @jcsvenning.bsky.social · Sep 21

Debating the aesthetics of #wind & #solar is a luxury. The real crisis is climate change—threatening billions with deadly heat & catastrophic ecosystem breakdowns ♨️🥵🔥 Green #energy is a necessity🍃 Challenges exist (noise, land use) but are manageable - biggest risk is inaction #dkpol #climatechange

Reposted by Scott C. Doney, Ben Bond‐Lamberty, Elena Litchman , and 6 more Scott C. Doney, Ben Bond‐Lamberty, Elena Litchman, Dmitry Schigel, Andrew Hacket‐Pain, Pierre Mariotte, Orlando Schwery, Jonas Trepel, Anna F. Probert

Prof. Vigdis Vandvik @vvandvik.bsky.social · Aug 28

Come work with us!

Fully funded #PhD position in global change ecology - working in a cross-disciplinary cohort of 8 PhD students studying mountains in transition. 🧪🌐🏔️ @btwnthefjords-uib.bsky.social @cesam-uib.bsky.social

www.jobbnorge.no/en/available...

PhD Research Fellow in global change ecology (285493) | University of Bergen

Job title: PhD Research Fellow in global change ecology (285493), Employer: University of Bergen, Deadline: Wednesday, October 1, 2025

www.jobbnorge.no

Reposted by Jonas Trepel

Conservation Biology Göttingen @consbiogoe.bsky.social · Aug 28

New paper: 3rd chapter of Anne Graser's PhD thesis now published: How #forest disturbance, post-disturbance management and wild #ungulates affect #moth communities: besjournals.onlinelibrary.wiley.com/doi/10.1111/...
@jappliedecology.bsky.social