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Malte Jochum

@maltejochum.bsky.social

Community ecologist, father of two, outdoor enthusiast; Global Change, above-belowground, multitrophic interactions, energy flux; Professor for Above-belowground Interaction Ecology with @globalchangeeco.bsky.social @uniwuerzburg.bsky.social

1,736 Followers  |  980 Following  |  134 Posts  |  Joined: 04.10.2023
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Posts by Malte Jochum (@maltejochum.bsky.social)

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Insekten: Ein Datenschatz für Wissenschaft und Naturschutz Wie verändert sich die Biodiversität unter Bayerns Insekten – und warum? Forschende der Uni Würzburg nutzen nun die Datenbank Karla.Natur des Bayerischen Landesamtes für Umwelt, um Zukunftstrends zu m...

Schätze müssen gehoben werden, so auch die Datenschätze zur #Biodiversität. Wir freuen uns über die Fortsetzung der Kooperation mit dem @lfu.bayern.de zur Nutzung der bayerischen Insektendaten, um zu neuen Erkenntnissen in Wissenschaft & Naturschutz beizutragen
www.uni-wuerzburg.de/aktuelles/ei...

24.02.2026 09:06 — 👍 6    🔁 3    💬 0    📌 0
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Wissenschaftliche*n Mitarbeiter*in (m/w/d) zur Promotion im Bereich Biodiversitätsförderung und Mensch-Umwelt-Beziehungen im urbanen Raum

Promotionsstelle (75% für drei Jahre) im Bereich Stadtökologie

Die Gruppe Stadtökologie und Biodiversität sucht neue Mitarbeiter*innen im Bereich Konnektivität urbaner Lebensräume, urbane Biodiversität und Mensch-Umwelt-Beziehungen.

Weitere Informationen: jobs.ruhr-uni-bochum.de/jobposting/d...

23.02.2026 14:39 — 👍 4    🔁 8    💬 0    📌 0
Fig. 1. The relationship between mean shoot length per grass species to species richness of the endophytic insects found in these shoots.

A The number of herbivore species, B the sum of herbivore and parasitoid species. The five points indicating no species at all indicate that no one insect species has been reared from the five annual grass species studied, despite intensive shoot sampling (see Table 1). The inquilines of P. australis are included (see Table 2, see also Fig. S2A and S2B for regressions without inquilines). Regression lines were fitted to the species richness found in the ten perennial grass species.

Fig. 1. The relationship between mean shoot length per grass species to species richness of the endophytic insects found in these shoots. A The number of herbivore species, B the sum of herbivore and parasitoid species. The five points indicating no species at all indicate that no one insect species has been reared from the five annual grass species studied, despite intensive shoot sampling (see Table 1). The inquilines of P. australis are included (see Table 2, see also Fig. S2A and S2B for regressions without inquilines). Regression lines were fitted to the species richness found in the ten perennial grass species.

Fig. 2. Images illustrating the insect community of the shoot-inhabiting gall midge Giraudiella inclusa on Common Reed Phragmites australis.

A Phragmites australis reedbelt with the ricegrain-like galls of Giraudiella inclusa inside internodes.
B The gall midge Giraudiella inclusa: Oviposition, C Early Giraudiella gall development, D late Giraudiella gall development,
E the Giraudiella parasitoid Torymus arundinis ovipositing, F the gregarious Giraudiella parasitoid Aprostocetus calamarius,
G T. arundinis eggs on a dead 2nd instar host larva, H the conspicuously hairy, solitary T. arundinis larva, I midge skin filled with pupae of the gregarious Platygaster szelenii, J the solitary parasitoid Platygaster cf. quadrifarius (Tscharntke et al. 1991).

Fig. 2. Images illustrating the insect community of the shoot-inhabiting gall midge Giraudiella inclusa on Common Reed Phragmites australis. A Phragmites australis reedbelt with the ricegrain-like galls of Giraudiella inclusa inside internodes. B The gall midge Giraudiella inclusa: Oviposition, C Early Giraudiella gall development, D late Giraudiella gall development, E the Giraudiella parasitoid Torymus arundinis ovipositing, F the gregarious Giraudiella parasitoid Aprostocetus calamarius, G T. arundinis eggs on a dead 2nd instar host larva, H the conspicuously hairy, solitary T. arundinis larva, I midge skin filled with pupae of the gregarious Platygaster szelenii, J the solitary parasitoid Platygaster cf. quadrifarius (Tscharntke et al. 1991).

🌾🐛 New #BAAE article: Hidden insect food webs thrive inside perennial grass shoots 🌿

Longer shoots host richer herbivore–parasitoid communities. Unmown refuges are key to protecting these overlooked specialists. 🕷️

DOI:https://doi.org/10.1016/j.baae.2026.01.004
@gfoesoc.bsky.social

23.02.2026 07:00 — 👍 10    🔁 7    💬 0    📌 0
Job Openings Explore exciting career opportunities at iDiv. Join a modern, international, and innovative research centre in the heart of Germany.

🚀 iDiv and @uni-jena.de are hiring! Join the Ecological Networks Lab as an IT Specialist (full-time, permanent). Work on lab automation, software dev, and cutting-edge research! 🌿💻

🗓️ Apply by 27 Mar 2026
📍 Leipzig (Germany)
👉 www.idiv.de/career/job-o...
#JobAlert #ITJobs #Biodiversity #iDiv

20.02.2026 13:17 — 👍 8    🔁 11    💬 0    📌 1
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Stelle im wissenschaftlichen Dienst - Bereich: Waldökologie - in Teilzeit / researcher [...] Am Lehrstuhl für Naturschutzbiologie und Waldökologie der Julius-Maximilians-Universität Würzburg ist frühestens zum 01.04.2026 eine Stelle imWissenschaftlichen Dienstin Teilzeit (65%) befristet für 3...

🔍 We’re hiring! Our chair is looking for a motivated Researcher to join our team! 🌳

The aim of the project is to analyse insect communities and their responses to different forest structural conditions. 🪲🦋

We’re looking forward to your application. 🌲📩

www.greenjobs.de/stellenanzei...

28.01.2026 08:40 — 👍 9    🔁 9    💬 0    📌 0
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Amazing inaugural lecture double feature today by Kathi Zarnack @zarnack-group.bsky.social and Sabine Fischer! @cctb-wue.bsky.social. Here’s to formalising a core bioinformatics, computational and theoretical biology competence @uni-wuerzburg.de

30.01.2026 22:30 — 👍 8    🔁 2    💬 0    📌 1

In the current issue of NEE, you can find our research on the community assembly mechanisms behind arthropod 🪲🕷️ biomass declines ⚖️📉 both as

the original paper: www.nature.com/articles/s41...

and (new🌟) as research briefing by @ebelingae.bsky.social and myself: www.nature.com/articles/s41...

12.01.2026 07:20 — 👍 9    🔁 7    💬 1    📌 0
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Some weeks ago I submitted my first own research proposal. And now it got accepted! 😍 This means, @ecoresearchzoo3.bsky.social will go underground and start investigating the evolution of cave arthropods. So excited for this new chapter! 🦇 🪲🕷️
@biologie-uniwue.bsky.social @merge-master.bsky.social

02.01.2026 14:25 — 👍 19    🔁 3    💬 2    📌 0

There will also be opportunities for thesis projects during 2026, and for the final large-scale project (starting approx. 2027) a PhD position. Contact me if interested!

02.01.2026 14:29 — 👍 5    🔁 1    💬 0    📌 0

Wow, this is so bad, Benjamin! I am really sorry to read it. It's unbelievable how universities regularly treat employees! Glad that you are calling out this behaviour!

19.12.2025 17:12 — 👍 0    🔁 0    💬 0    📌 0

University administration sent me an email yesterday, inviting me to come to the office today to finalize everything. Now they just cancelled the appointment and told me they can't employ me anymore. Who treats people like this?? #IchBinHanna

19.12.2025 09:36 — 👍 34    🔁 9    💬 6    📌 2
Local microclimates can both amplify and mitigate extreme temperatures associated with climate change Climate change is a threat to global biodiversity, with changes to mean temperatures and increasing frequency and intensity of extreme weather events. Heatwaves in particular pose a threat to species’...

New paper alert! Microclimate temperatures are more extreme than we previously thought! Near-ground temperatures are amplified in hot weather, cool refugia is lost and replaced with heat traps ☀️🔥🥵 escape from heat will be very hard for small ground-dwelling organisms
doi.org/10.21425/fob...

19.12.2025 10:44 — 👍 20    🔁 8    💬 2    📌 1
Hypothesised scaling relationships between body size and population density and energy use (metabolism and energy flux) for predators and secondary consumers

Hypothesised scaling relationships between body size and population density and energy use (metabolism and energy flux) for predators and secondary consumers

❗New paper alert❗
The 2nd publication from Poppy Romera's Masters is just out in @natcomms.nature.com
We find that adherence of 180 soil food webs to the energy equivalence rule strongly depends on the measure of energy use, trophic level, and food web structure. www.nature.com/articles/s41...

19.12.2025 10:00 — 👍 17    🔁 5    💬 1    📌 0

Impressive presentation and PhD work overall! Well done, Kim! Congratulations 🎉

19.12.2025 08:41 — 👍 1    🔁 0    💬 1    📌 0

👏 New timelapse inspired by “healthy soils for healthy cities” illustrating why you should be careful not to include plastic or cigarette butts in your vermicompost bin 🪱 🪱

by Wim van Egmond, with Gerlinde De Deyn, Ingrid Lubbers&Jan Willem van Groenigen from SBL and SGL!

Here: lnkd.in/enbjVE95

18.12.2025 07:28 — 👍 2    🔁 1    💬 0    📌 0
Research Associate (m/f/d) Arthropods

Prof Michael Staab @leuphana.bsky.social is currently offering two 3-year positions in arthropod 🪲🕷️🦗 ecology in the @bexplo.bsky.social framework (apply until January 14th):

PhD (65%):

www.leuphana.de/en/universit...

Research associate (50% ):

www.leuphana.de/en/universit...

17.12.2025 13:11 — 👍 2    🔁 4    💬 0    📌 1
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Nitrogen deposition reveals global patterns in plant and animal stoichiometry - Nature Communications Organisms vary in their nitrogen and phosphorus content, shaping ecological and evolutionary processes. This study shows that nitrogen deposition is a consistent global factor associated with plant an...

Thrilled to share our new #stoichiometry paper on the environmental correlates of plant and animal stoichiometry. This was a fantastic collaborative work supported by #idiv www.nature.com/articles/s41...

09.12.2025 21:07 — 👍 35    🔁 19    💬 0    📌 2

Some food for the Global Ecology Feed 🌐
🦦🌱🌍🌏🌎

10.12.2025 08:04 — 👍 1    🔁 0    💬 0    📌 0

So grateful for this fantastic group of collaborators! Truly, a team effort, thrilled to see it out!

09.12.2025 21:21 — 👍 9    🔁 1    💬 0    📌 1

Great team led by expert leaders, @ecolgonzalez.bsky.social and Olivier Dezerald (www.researchgate.net/profile/Oliv...). Such a nice outcome and more to come ;)
Thanks @idiv-research.bsky.social #sDiv for the support!

10.12.2025 06:55 — 👍 6    🔁 0    💬 0    📌 1
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Nitrogen deposition reveals global patterns in plant and animal stoichiometry - Nature Communications Organisms vary in their nitrogen and phosphorus content, shaping ecological and evolutionary processes. This study shows that nitrogen deposition is a consistent global factor associated with plant an...

🧵1/5
🌍🔬 Our new paper is out! We identify the global mechanisms shaping the elemental composition of organisms — and the results overturn long-standing assumptions in ecology.

👇 Thread ↓
doi.org/10.1038/s414...

09.12.2025 14:32 — 👍 33    🔁 22    💬 3    📌 3
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Arthropod species loss underpins biomass declines - Nature Ecology & Evolution Insects are declining in many regions. Here the authors show that arthropod biomass losses in Jena Experiment and Biodiversity Exploratories time series are driven more by species loss than by species...

What are the mechanisms behind terrestrial arthropod declines? @bmwildermuth.bsky.social and colleagues have some answers

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

@bexplo.bsky.social
@idiv-research.bsky.social
@jena-experiment.bsky.social

04.12.2025 09:14 — 👍 18    🔁 10    💬 1    📌 1
Seedling growing in the forest

Seedling growing in the forest

University of Birmingham, UK, are advertising a permanant position (Assistant or Associate Professor) in *Forests under Global Change*. A wide net has been cast - ecology, physiology, modelling, remote sensing, functioning, biodiversity, management... 🌲🌱🌳🌳🦌🌳🛰️🐿️🌲🔬🌳
www.jobs.ac.uk/job/DPS459/a...

05.12.2025 08:07 — 👍 51    🔁 58    💬 2    📌 4

@eisenhauerlab.bsky.social @globalchangeeco.bsky.social

05.12.2025 07:35 — 👍 0    🔁 0    💬 0    📌 0
Languages Hotspot in Biodiversity Science

Seid ihr auf der Suche nach Informationen über Bodenbiodiversität? 🌐🪱 Unsere Artikelsammlung über das Leben im Boden und Übersetzungen in 30 Sprachen findet ihr hier:
idiv-biodiversity.de/en/young-min...
HEUTE IST WELTBODENTAG
@uni-wuerzburg.de @idiv-research.bsky.social @soilbiocomm.bsky.social

05.12.2025 07:34 — 👍 2    🔁 2    💬 1    📌 0

@eisenhauerlab.bsky.social @globalchangeeco.bsky.social @soilbiocomm.bsky.social

05.12.2025 07:31 — 👍 0    🔁 0    💬 0    📌 0
Languages Hotspot in Biodiversity Science

Interested in the world under our feet and desperate to find cool and engaging reading material? Check out our Soil Biodiversity articles for kids, available in more than 30 languages: 🪱🌐
idiv-biodiversity.de/en/young-min...
HAPPY WORLD SOIL DAY
@uni-wuerzburg.de @idiv-research.bsky.social

05.12.2025 07:29 — 👍 10    🔁 5    💬 1    📌 0
Dynamic omnivory shapes the functional role of large carnivores under global change - Nature Communications Omnivores like bears can switch between plant and animal diets, potentially helping them respond to changing conditions. By combining modern and fossil data, this study shows that bears shift toward c...

Large terrestrial omnivores (bears) shift to carnivory in unproductive ecosystems and at short growing seasons and to herbivory in more productive systems and when seasons are longer.
Interesting results in new study @natcomms.nature.com

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

04.12.2025 08:09 — 👍 2    🔁 1    💬 0    📌 0