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Posts by Julia Rothacher

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Intact #tropical #forests 🌴🌴 can buffer hot and dry extremes 🌞 by >6°C. When do recovering #secondary forests recover this capability?
New paper Felicity Newell et al. in Agricult Forest Meteorol
#forestecol #restoration #climate @jocotoco.bsky.social
www.reassembly.de/news/how-muc...

1 week ago 18 8 1 0
The invisible heterogeneity of forests—β-diversity of volatiles - Landscape Ecology Context Volatile organic compounds (VOCs) create invisible chemical landscapes that influence ecosystem processes. Yet whether VOC β-diversity (i.e., variability in VOC composition between patches) responds to structural heterogeneity and reflects silvicultural habitat management remains unclear. Objectives In a large field experiment, we quantified how enhanced structural beta complexity (ESBC) affects VOC β-diversity patterns and investigated potential drivers and ecological effects in temperate production forests. Methods We sampled VOCs in ambient forest air using Tenax/Carboxen adsorbent traps at forest floor and 1 m heights across 234 treatment and control forest patches in six German regions. We analyzed VOCs via thermal desorption-gas chromatography mass-spectrometry (TD-GCMS) and examined environmental drivers including deadwood characteristics, canopy cover, tree species dissimilarity, and herb layer dissimilarity. We tested potential ecological relevance by analyzing saproxylic beetle community responses. Results VOC β-diversity increased significantly at 1 m height in heterogeneous forests compared to homogeneous forests, but we found no significant change at the forest floor. Deadwood volume and deadwood structural diversity, rather than canopy openness, were identified as the main drivers of increasing VOC β-diversity. Dissimilarity in beetle community composition was associated with VOC β-diversity, but only for forest floor VOCs, suggesting these chemical patterns may correlate with variables beetles respond to. Conclusions Our findings suggest that volatile β-diversity represents an overlooked dimension of habitat heterogeneity, one that creates invisible chemical heterogeneity influencing inter- and intra-species interactions and ecosystem processes. We demonstrate that enhancing forest heterogeneity through deadwood retention increases both structural heterogeneity and volatile β-diversity.

Fascinating new insights on the forest volatilome! 🍁🧪
Led by Lena Carlson we identify deadwood as a main driver of VOC beta-diversity, linked to the diversity of beetles. 🪲

@betafor.bsky.social @ecoresearchzoo3.bsky.social

1 week ago 10 5 0 1
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We are hiring! Interested in doing a PhD and excited about forest management, ecosystem services, simulation modeling and beta diversity? Come work with us @edfm-tum.bsky.social at @tum.de, full job ad here: cloud.edfm.ls.tum.de/index.php/s/...

2 weeks ago 61 37 0 3
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Forest Heterogeneity by Chain Saw: How Between‐Patch Variation in Old Growth Attributes Changes the Metacommunities of Beetles Metacommunity theory has expanded our understanding of how spatial dynamics and local interactions influence species communities, but we lack empirical studies specifically in terrestrial habitats te...

New paper on metacommunity dynamics out! 📃🍁 Led by Oliver Mitesser we show that habitat heterogeneity shifts communities from patch-dynamics toward mass effects and species sorting using beetles as focal taxon. 🐞😍
@betafor.bsky.social @cofeuniwue.bsky.social

onlinelibrary.wiley.com/doi/full/10....

2 weeks ago 10 3 0 0

Really grateful to have taken part in this vibrant and inspiring spring school surrounded by so many motivated minds in bioacoustics!🎙🎶

2 weeks ago 3 0 0 0
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Higher carbon storage in primary than secondary boreal forests in Sweden Boreal forests provide considerable global land carbon storage and uptake, but they are being rapidly transformed to managed secondary forests, with poorly quantified implications for ecosystem carbon...

5 years ago I joined a field work campaign in the stunningly beautiful Swedish primary forests, still one of my all-time favourite fieldwork experiences!🌲🌿

Now there is a new study out lead by Didac Pascual and Anders Ahlström from Lund University
www.science.org/doi/10.1126/...

4 weeks ago 12 5 1 0
Earth System Research and Training at FAU

We are looking for a postdoc (up to five years) interested in climate-driven plant extinctions! Working with @manuelsteinbauer.bsky.social and me and a large team on various aspects of Earth system sciences.

More information here: fau-earth-system-science.github.io

1 month ago 20 33 2 0
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170 species of wild #bees call the Campus of the University of Würzburg there home – that’s about a third of wild bee species recorded in #Bavaria. These are the results of scientists of the #JMU Bio Centre. 📸 Paul Geisendörfer
➡️ www.uni-wuerzburg.de/en/news-and-...

1 month ago 2 2 0 0
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Limited thermal tolerance in tropical insects and its genomic signature - Nature A survey of tropical insect populations and thermal tolerance limits indicates that species from lowland areas have low capacity to survive increased temperatures, and that thermal tolerance is limited by fundamental properties of protein architecture.

Nature research paper: Limited thermal tolerance in tropical insects and its genomic signature

go.nature.com/4ua5R82

1 month ago 37 15 0 4
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Elevation reverses the effects of forest structure on folivory and leaf asymmetry Read the free Plain Language Summary for this article on the Journal blog.

Congratulations to our postdoc Soumen on his new publication! 🎉🌳

In German beech forests, canopy gap and deadwood enrichment reduced insect damage but stressed trees at low elevations, while the opposite happened higher up.

👉 Local climate makes the difference.

📖 doi.org/10.1111/1365...

1 month ago 5 4 0 0
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NEW JOB in #ornithology chasing #nutcrackers in Switzerland to understand seed dispersal patterns: buff.ly/Cx0OOQy

2 months ago 87 51 3 4
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Postdoctoral position in Forest Genetics at @uni-freiburg.de with a focus on local adaptation and/or stress reaction of trees. The position combines research and teaching (4 SWS), and offers the opportunity to develop an independent research profile (4+ years).

2 months ago 39 42 1 0

Seems like the findings of @johannaasch.bsky.social on #dungbeetle diversity well match to the temperature stress responses of the forest dung beetle to changing climates🌡🪲 Stay tuned for exciting further insights 🤩

📃 Paper from press release:
besjournals.onlinelibrary.wiley.com/doi/10.1111/...

2 months ago 6 5 0 0
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🪲 🪱 🌳 WSL researchers sampled tree holes in France, Brazil and India and found that spatial structuring explained #macroinvertebrate diversity better than local conditions, highlighting the importance of connectivity and old-growth forests for conservation. onlinelibrary.wiley.com/doi/10.1111/...

2 months ago 12 3 0 0
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Vielfalt im Dorf, Ödnis auf der Wiese? Bayerische Wiesen sind laut einer neuen Studie der Universität Würzburg die eintönigsten Insekten-Habitate. #Artenvielfalt #Biodiversität 📷 Johannes Uhler
➡️ www.uni-wuerzburg.de/aktuelles/pr...

2 months ago 6 3 0 0
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HIRING! We are looking for a new PhD student to work on insects in deadwood, effects of microclimate and land use. This is part of the Biodiversity Exploratories @bexplo.bsky.social and will use a new experiment using rain-out shelters in different regions of Germany. EU driver´s licence required.

2 months ago 19 18 1 0
Rabea Klümpers - Illustratoren Organisation e.V.

I can recommend Rabea Klümpers, a young female artist from the Bavarian Forest increasingly specializing in nature illustrations. 😊 Here are some of her works:
illustratoren-organisation.de/portfolio/ra...

3 months ago 0 0 0 0
Job Offer: PhD Position
Project bAImo: artificial intelligence for insect monitoring
3 years (initially)
65% TV-L
Background: photo of a brown butterfly (Pyronia tithonus) on a purple flower

Job Offer: PhD Position Project bAImo: artificial intelligence for insect monitoring 3 years (initially) 65% TV-L Background: photo of a brown butterfly (Pyronia tithonus) on a purple flower

Come work with us! 🪲For our new project bAImo we are searching for a PhD researcher combining modelling 💻 with ecological expertise, aiming to improve interdisciplinary approaches to insect monitoring 🔎🐝 please visit tinyurl.com/bAImo-PhDoffer for more details. Looking forward to your application 🦗😊

4 months ago 14 15 0 1
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Experimental enhancement of structural heterogeneity in forest landscapes promotes multidimensional hoverfly diversity Our results provide the first experimental evidence that enhancing structural heterogeneity at the landscape scale can restore multidimensional hoverfly diversity in temperate forests. They underscor...

Happy to share that our paper is out in @jappliedecology.bsky.social 😄

Experimentally increasing structural heterogeneity in forest landscapes (deadwood + canopy gaps) boosts taxonomic, functional, and phylogenetic diversity of hoverflies 🪰🌳

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

4 months ago 18 10 0 1
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Calling on all forest disturbance experts: Please consider contributing to our study on global forest disturbance change, and help resolve the nuances of changing forest disturbance regimes. More details and survey here: www.lss.ls.tum.de/edfm/disturb...

4 months ago 45 52 0 4
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Mehr Mist: Klimawandel könnte Bestände des Waldmistkäfers schrumpfen lassen

Unsere Doktorandin @johannaasch.bsky.social hat beim Deutschlandfunk über den Waldmistkäfer und den Klimawandel gesprochen 🌳🪲

www.deutschlandfunk.de/mehr-mist-kl...

4 months ago 2 2 0 1

New study on arthropod declines @natecoevo.nature.com 🪲

In two time series @jena-experiment.bsky.social & @bexplo.bsky.social we show how community (dis)assembly underpins local biomass declines.

It mostly boils down to species loss, with identity losing relevance.

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

4 months ago 57 36 2 3
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Nest mass in forest tits (Paridae) increases with elevation and decreasing body mass, promoting reproductive success Based on the concept of the extended phenotype, bird nest characteristics can serve as indicators for adaptations to changing environmental conditions. We examined how the nest mass of three cavity-n...

New study out @avianbiology.bsky.social 📃 Along our #BETAFOR elevational gradient 🗻 forest tits adjust their nest construction to macroclimatic conditions to maintain successful breeding as environmental conditions change.🐦🌳
Read it here: doi.org/10.1002/jav....

4 months ago 5 1 0 0
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Browsing by roe deer poses a serious problem, particularly for young and low-growing trees. (Image: Vanell / AdobeStock)

Browsing by roe deer poses a serious problem, particularly for young and low-growing trees. (Image: Vanell / AdobeStock)

Deer browsing limits forest diversity – even in the light. New study in @jappliedecology.bsky.social by Würzburg ecologists and others: Even sunny canopy gaps cannot offset the impact of roe deer on forest regeneration. 🦌🌳☀️
➡️ www.uni-wuerzburg.de/en/news-and-...

5 months ago 14 6 1 0
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Great to see the results of our massive biodiversity assessment at Berchtesgaden Natl. Park pour in! Cool insights on patterns & drivers of multidiversity!

#1 Macro- and microclimate interactively shape species diversity of multiple taxa in mountain landscapes by L. Geres. doi.org/10.1002/ecog...

5 months ago 40 11 1 2
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Career perspective npj Biological Timing and Sleep - In this career perspective article, the author describes her long pathway to a professorship in Germany.

Very interesting career perspective from Charlotte Helfrich-Förster.

A lot of very good advices for young scientists

rdcu.be/ekQat

11 months ago 14 8 0 0
Researcher Position at the Chair of Conservation Biology and Forest Exology Universität Würzburg Sanderring 2 97070 Würzburg

Looking for a PhD / researcher position on #arthropods in #urban green spaces? Our colleague @nadja-simons.bsky.social @cofeuniwue.bsky.social @uni-wuerzburg.de has a 3 year position advertised here:
www.uni-wuerzburg.de/karriere/sin...

5 months ago 7 8 1 1
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Welcome to the 8th European Congress for Conservation Biology in Leiden (NL)! Here we will explore how biodiversity can be safeguarded effectively in the long term. First call is open now! Check eccb26Leiden.eu for more info. We are looking forward to your contributions!

6 months ago 13 6 1 2
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Amazing week of #birdbanding with @mpi-animalbehav.bsky.social! 🪶 For a long-term monitoring programme we captured, aged & ringed 21 #bird species 🐦‍⬛🦜, including 3 woodpeckes and a goldcrest from Northern Sweden 🇸🇪 ringed this autumn. Learned so much, thanks for having me! 💚

5 months ago 16 2 1 0
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Würdigung für jahrelanges Engagement Prof. Dr. Heike Feldhaar hat die Bayerische Staatsmedaille für herausragende Verdienste um die Umwelt erhalten.

🌿👏 Congratulations to Prof. Dr. Heike Feldhaar, BayCEER, and University of Bayreuth, on receiving the Bavarian State Medal for outstanding services to the environment!

ubtaktuell.uni-bayreuth.de/umweltmedail...

#BayCEER #UniBayreuth #Ecology #Insects #Sustainability

6 months ago 11 3 0 0