Jeppe A. Kristensen

In which direction should Arctic herbivory science move in the coming years and decades?🦌🫎🐛🦣?

@icbarrio.bsky.social once again brought us all together to put pen to paper📝 to make a list!

Europe's forest plants thrive best in light-rich, semi-open woodlands kept open by large herbivores Before Homo sapiens arrived, Europe's forests were not dense and dark but shaped by open and light-rich woodland landscapes. A new study from Aarhus University shows that most native forest plants are...

This recent paper by colleagues Szymon Czyżewski and @jcsvenning.bsky.social from @econovoau.bsky.social calls for nothing less than a paradigm shift in the way we should view European forests🌲🌳🌱 w 🐗🫎🐮 as some of the main (missing) players.

Hopefully it will resonate!

phys.org/news/2025-05...

Looking much forward to welcoming @bjenquist.bsky.social later this week in Aarhus when @au.dk brings together decision makers, researchers, NGOs and industry to a discussion of what happens Beyond Carbon Neutrality: matchpoints.au.dk/matchpoints2...

MatchPoints 2025 - Beyond Climate Neutrality: How do we get the planet back on track? The climate crisis demands more than emissions reductions. Join MatchPoints 2025 to engage in the discussion on how to get the planet back on track.

As momentum on biodiversity & climate action faces headwinds, we must continue to step up. I’m excited to speak at Aarhus Uni. MatchPoints Conference this week (May 14–16) on The Metabolic Planet: How Energy & Ecology Shape Climate Solutions @au.dk w @jcsvenning.bsky.social & @jeep4x4.bsky.social 🧪🌐

📢We’re hiring an Events and Special Projects Coordinator!
This is a brilliant opportunity for someone who is passionate about Nature Recovery and wants to work with a team that really makes a difference! 🌳 We have some exciting events in the pipeline that you could lead! Deadline 11th April!

Are you interested in boldly reimagining how we can finance #naturerecovery at scale, beyond mainstream market mechanisms?
We are advertising a one-year postdoctoral researcher at
@naturerecovery.bsky.social at Oxford. Closing date April 30th
tinyurl.com/muebaf86
@oxfordgeography.bsky.social

World's largest deforestation project fells forests for bioethanol fuel, sugar and rice in Indonesia Indonesia plans to clear forests about the size of Belgium to produce sugarcane-derived bioethanol, rice and other food crops, potentially displacing Indigenous groups who rely on the land to survive

#Biomass🌳 demands create perverse incentives around the world 🌎

A recent study from PIK showed how biomass production beyond the current agricultural area will sacrifice other #planetary #boundaries, such as #biodiversity: www.nature.com/articles/s43...

abcnews.go.com/Business/wir...

Forest restoration is booming but biodiversity isn’t Founder’s Briefs: An occasional series where Mongabay’s founder Rhett Ayers Butler shares analysis, perspectives, and story summaries.   Global efforts to restore forests are gathering pace, driven…

Forest restoration is booming but biodiversity isn’t

Two new positions (PhD and 3y postdoc) at GEUS studying ancient landslides in Denmark. Funded by @carlsbergfondet.dk

Come work with me!

www.jobindex.dk/jobannonce/r...
www.jobindex.dk/jobannonce/r...

@ecosystemengineer.bsky.social thanks for this insight. Really interesting. I have talked to a former exec at the Elephant Sanctuary in Tennessee. They tell intriguing stories of how they topple the old plantation trees. Would be cool to do some combination of that and experiments like you suggest.

How dinosaur extinctions created an environment that contributed to our fruit-eating primate ancestors The extinction of the largest dinosaurs to walk the Earth may have played a critical role in creating an environment that helped fruits evolve, thereby indirectly shaping the evolution of our own frui...

An explainer of our new study: phys.org/news/2025-02...

*based on the ecological roles #animals play in intact modern #ecosystems, and could play in restored ecosystems, if we restore them (or functional substitutes) through #rewilding 🦬

@carlsbergfondet.dk @andrewabraham.bsky.social @econovoau.bsky.social @naturerecovery.bsky.social

So what actually happened when the dinosaurs died?🦕

Using simple ecological rules*, we explore how the interplay between ecosystem engineering, seed size and light environment can explain temporal patterns of animal and seed sizes from the fossil record🌳🐘🐀🌱

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

Help Denmark Buy California – Because Why Not? Buy it from Trump, the bigliest crowdsourcing ever

All in on this one: denmarkification.com

😂

Arctic research cooperation in a turbulent world Rapid Arctic change requires multifaceted approaches with Arctic peoples at the forefront

An important shout from Spence and colleagues at @harvard.edu

It feels double-relevant in times when the Arctic is hot but Arctic geopolitics is hotter, and the people at the centre of it all are not always treated as they should be🇬🇱

www.science.org/doi/10.1126/...

Well, that's actually the alternative solution we suggest in the paper for the Arctic 😉

In the Arctic, planting more trees actually makes the world warmer Tree planting can help address the climate and biodiversity crises – but only in the right circumstances.

Yeah, there is a lot of nuance missing from that narrative. We had a paper out recently: theconversation.com/in-the-arcti...

We should identify the best natural climate solutions for each context based on a holistic approach to the Earth system to avoid counterproductive initiatives.

Natural tree colonisation of organo‐mineral soils does not provide a net carbon capture benefit at decadal timescales Sparse natural colonisation of carbon-rich soils by low biomass trees might not result in net ecosystem carbon gains at decadal timescales, and instead lead to unforeseen soil carbon losses. Soil car...

Another testament to how important it is to have realistic expectations to how much climate mitigation trees can deliver on decadal timescales.

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

2-yr postdoc on human macroecology in a functional trait perspective Aarhus University - Vacancy at Aarhus University Vacancy at School of Culture and Society - Department of Heritage Studies, Aarhus University

A few more days to apply! Together with @jcsvenning.bsky.social and as part of @econovoau.bsky.social we're offering this fab 2-yr postdoc position: international.au.dk/about/profil...

Two really exciting opportunities to work with great people in a truly amazing setting in the northern Swedish boreal🔥🌲🌍

Looking to explore High Arctic carbon dynamics?
🚨 We're offering a PhD opportunity at #Zackenberg Research Station! Dive into 25 years of #GEM and #ICOS data, conduct fieldwork, and study Arctic ecosystems under climate change. 🌍
🔗 Share or Apply now: tinyurl.com/Zackenberg
#ArcticResearch #PhDLife

Congratulations Ana. Glad you got it🎉🧬

Wildfires offset the increasing but spatially heterogeneous Arctic–boreal CO2 uptake - Nature Climate Change How the carbon stocks of the Arctic–Boreal Zone change with warming is not well understood. Here the authors show that wildfires and large regional differences in net carbon fluxes offset the overall ...

Great paper by @annvirkk.bsky.social and colleagues confirming that #wildfires are a really important and growing factor in #Northern #carbon budgets - offsetting the sink capacity🌍🌲🔥

#noplacefortreeplanting

www.nature.com/articles/s41...

Delighted to see the first abstracts have been submitted to our session. Already some exciting titles!!🦫🐛🦬

The deadline is approaching (2 days to go) so please forward to people interested in the role of animals in the Earth system🌎

See u at #EGU25!

meetingorganizer.copernicus.org/EGU25/sessio...

A shift from >60% towards 30-50% tree-cover projected in the boreal region in the coming decades.🔥

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

Opportunity for additional tree-planting? 🌲

Nope!: theconversation.com/in-the-arcti...

Are you still unsure where to join the discussion with people in #biogeoscience on how #animals affect the #Earth system?🦬

meetingorganizer.copernicus.org/EGU25/sessio...

See you in Vienna at #EGU2025!

Submission deadline is 15th Jan, 1300 CET

@eurogeosciences.bsky.social

Tree planting is no climate solution at northern high latitudes - Nature Geoscience Planting trees in high-latitude regions can be counterproductive to climate change mitigation, according to a synthesis of the biophysical and ecological impacts of planting trees.

That is a very fair comment. There has been intensive writing on this topic in recent years - we reference most of the recent sources in our original Nature Geoscience paper: www.nature.com/articles/s41... (pm for e-copy)

Hehe, gotcha 😉 unsurprisingly also something we emphasise in the paper. However, it is also imperative that Net Zero means net C removals from the atmosphere, hence we need to make sure removal strategies, such as tree planting, do not have other undesired effects negating the primary purpose

Excellently led by Marc Macias Fauria @scottpolar.bsky.social

@carlsbergfondet.dk
@aarhusuni.bsky.social

In the Arctic, planting more trees actually makes the world warmer Tree planting can help address the climate and biodiversity crises – but only in the right circumstances.

"We may fool ourselves, but not the Earth system"🌍

A great piece in @theconversation.com about why tree-planting at high Northern latitudes will do more harm to #climatechange than good while also threatening the unique #Arctic #biodiversity🦌🌿

theconversation.com/in-the-arcti...