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Posts by Oliver A. Kern

PALVEG 2.0 - Comparison of proxy- and model-based forest-cover reconstructions for the late Pleistocene (70-20 ka BP)

New data, new App! oakern.shinyapps.io/palveg_v2/

Explore vegetation reconstructions 🌲🌳 (pollen- and model-based) for the Last Glacial ❄️ in Europe and see how much they can differ.

This affects our perception of Last Glacial landscapes during crucial migration 🚶‍♀️ and extinction events 🦣

3 weeks ago 6 3 0 1
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Head Engineer in ancient DNA (298943) | University of Oslo Job title: Head Engineer in ancient DNA (298943), Employer: University of Oslo, Deadline: Tuesday, May 12, 2026

Head engineer position advertised in ancient DNA lab at the University of Oslo associated with the EcoArch project: www.jobbnorge.no/en/available...

3 weeks ago 0 5 0 0
PALVEG 2.0 - Comparison of proxy- and model-based forest-cover reconstructions for the late Pleistocene (70-20 ka BP)

New data, new App! oakern.shinyapps.io/palveg_v2/

Explore vegetation reconstructions 🌲🌳 (pollen- and model-based) for the Last Glacial ❄️ in Europe and see how much they can differ.

This affects our perception of Last Glacial landscapes during crucial migration 🚶‍♀️ and extinction events 🦣

3 weeks ago 6 3 0 1
Displayed are the MP (blue triangle), AUR-P1 (solid red circle), and AUR-P2 sites (open red circle). Three special Aurignacian sites — Cardina-Salto do Boi, Abrigo de la Malia, and Lapa do Picareiro — are also indicated. The last Neanderthal (NEA) refugia are primarily located in coastal areas, delineated by a dashed blue circle. The initial expansion routes of anatomically modern humans (AMHs) associated with AUR-P1 are shown with thick solid red arrows. The subsequent Duero route, extending from Cantabria into inland Iberia, is represented by thick dashed red arrows. The expansion pathways of AMHs linked to AUR-P2 are marked by thin dashed red arrows. A potential zone of admixture between NEAs and AMHs is identified along the northern Iberian coast, enclosed by a white dashed circle.

Displayed are the MP (blue triangle), AUR-P1 (solid red circle), and AUR-P2 sites (open red circle). Three special Aurignacian sites — Cardina-Salto do Boi, Abrigo de la Malia, and Lapa do Picareiro — are also indicated. The last Neanderthal (NEA) refugia are primarily located in coastal areas, delineated by a dashed blue circle. The initial expansion routes of anatomically modern humans (AMHs) associated with AUR-P1 are shown with thick solid red arrows. The subsequent Duero route, extending from Cantabria into inland Iberia, is represented by thick dashed red arrows. The expansion pathways of AMHs linked to AUR-P2 are marked by thin dashed red arrows. A potential zone of admixture between NEAs and AMHs is identified along the northern Iberian coast, enclosed by a white dashed circle.

📢 New Publication
Dr Yaping Shao and colleagues present a new open-access PLOS ONE study simulating population dynamics during the Middle-to-Upper Palaeolithic Transition (ca. 50–38 ka) on the Iberian Peninsula.

#MiddlePalaeolithic #Neanderthals #Aurignacien #AMH

🔗 read on here:
shorturl.at/YU0Da

1 month ago 3 3 0 0
Scientific coring campaigns in the Chew Bahir basin. Drilling pilot core CB-01-2009 close to the western basin margin in 2009, using a rotary single tube drill, with the cored sediment segments in the transport crate with a core diameter of 91 mm. Transect short cores across the basin were collected with a vibro-corer and smaller diameter liners. HSPDP deep-drilling campaign in November–December 2014, ∼ 3 km away from the western margin using duplicate coring strategy and soft-sediment coring tools (left: alien corer; right: extended nose corer, with non-rotating shoe). Six small ponds were excavated to store the daily required 40 000 L of drilling fluid per day. Recovered core segments were processed, weighed, measured and sealed for transport in the nearby science tent. Photos by the CHB science team.

Scientific coring campaigns in the Chew Bahir basin. Drilling pilot core CB-01-2009 close to the western basin margin in 2009, using a rotary single tube drill, with the cored sediment segments in the transport crate with a core diameter of 91 mm. Transect short cores across the basin were collected with a vibro-corer and smaller diameter liners. HSPDP deep-drilling campaign in November–December 2014, ∼ 3 km away from the western margin using duplicate coring strategy and soft-sediment coring tools (left: alien corer; right: extended nose corer, with non-rotating shoe). Six small ponds were excavated to store the daily required 40 000 L of drilling fluid per day. Recovered core segments were processed, weighed, measured and sealed for transport in the nearby science tent. Photos by the CHB science team.

📢 New Publication
How can environmental records be recovered from the Ethiopian Rift? Dr Verena Foerster-Indenhuck and colleagues show how overlapping sediment cores from the Chew Bahir drilling campaign enable reconstructions of past climate and human evolution!🔬

🔗 read on here:
shorturl.at/BzEDT

1 month ago 4 3 2 0
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PhD position in the field of Terrestrial plant ecology (297424) | UNIS Job title: PhD position in the field of Terrestrial plant ecology (297424), Employer: UNIS, Deadline: Tuesday, April 7, 2026

PhD position in the field of Terrestrial plant ecology @UNIS (University Centre in Svalbard ❄️)

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

Deadline 7.4. ! Please share

1 month ago 1 1 0 0
Different measurements from Lake Nakuru through time. This includes diatoms  that represent at least 10% in one sample ; T. Index which shows potential depth; conductivity (amount of salts in the lake); aridity (Dim1 and K/Ti); biological productivity (Dim2, Ca/Mg, Si/Zr, Sr/Ti, and inc/coh); and anoxia (Dim3, Mo, and Fe/Mn). Global climate phases are highlighted with the anticipated dry phase (Last Glacial Maximum, LGM) in brown and the anticipated wet phase in blue (Bølling–Allerød interstadial, B-A).

Different measurements from Lake Nakuru through time. This includes diatoms that represent at least 10% in one sample ; T. Index which shows potential depth; conductivity (amount of salts in the lake); aridity (Dim1 and K/Ti); biological productivity (Dim2, Ca/Mg, Si/Zr, Sr/Ti, and inc/coh); and anoxia (Dim3, Mo, and Fe/Mn). Global climate phases are highlighted with the anticipated dry phase (Last Glacial Maximum, LGM) in brown and the anticipated wet phase in blue (Bølling–Allerød interstadial, B-A).

📢 New Blog Post
Lakes may seem stable in our everyday experience, but over hundreds to thousands of years they can change a lot! Dr. Elena Robakiewicz explains lake #coring and what Lake Nakuru (Kenya) reveals about the past 35,000 years!🔬

🔗 read on here:
shorturl.at/FRHLi

2 months ago 4 3 0 0
A view of Earth from space against a starry background with a bright sun flare. Large white text on the right asks: 'IS CLIMATE CHANGE NATURAL?'

A view of Earth from space against a starry background with a bright sun flare. Large white text on the right asks: 'IS CLIMATE CHANGE NATURAL?'

📢 Student Perspective
What makes Earth Scientists so sure that the current #climate crisis is man-made? HESCOR Ringvorlesung student Bethan Callow explains why scientists have a lot of certainty about our role in current global climate changes!🌦️

🔗 read on here:
shorturl.at/1K1ez

2 months ago 3 1 0 0
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PhD position in the field of Terrestrial plant ecology (297424) | UNIS Job title: PhD position in the field of Terrestrial plant ecology (297424), Employer: UNIS, Deadline: Tuesday, April 7, 2026

PhD position in the field of Terrestrial plant ecology @UNIS (University Centre in Svalbard ❄️)

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

Deadline 7.4. ! Please share

1 month ago 1 1 0 0
A topographical map of Europe, the Mediterranean, and the Levant showing the chronological expansion of modern humans. Colored contour lines (blue to green) represent arrival times in thousands of years ago (ka), moving from the Levant (older dates) into Western Europe (younger dates). Red dots identify key archaeological sites with specific date ranges.

A topographical map of Europe, the Mediterranean, and the Levant showing the chronological expansion of modern humans. Colored contour lines (blue to green) represent arrival times in thousands of years ago (ka), moving from the Levant (older dates) into Western Europe (younger dates). Red dots identify key archaeological sites with specific date ranges.

📢 New Blog Post
How might the first anatomically modern humans have migrated across Europe? 🌍👣
@isabell-schmidt.bsky.social explores this question using the “Our Way Model” and results from our recent Nature Communications paper!

🔗 read on here:
shorturl.at/5WsC6

1 month ago 2 2 0 0
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📢 HESCOR Seminar
#UoC Master's students! 👋
Curious about how humans and the Earth interact in complex, dynamic systems? 🌐🤝
Explore cutting-edge research and modelling approaches from climate science, archaeology, mathematics, and the humanities – all in one seminar!

🔗 read more:
shorturl.at/OxQzZ

1 month ago 5 3 0 0
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Sedimentary DNA from lake depocenters maximizes detection of catchment vegetation - Communications Earth & Environment Central and deeper cores of sedimentary DNA capture main taxonomic richness in vegetation, whereas marginal samples near inflows show rarer and spatially restricted taxa, according to an analysis of 4...

#SedaDNA from lake depocenters maximizes detection of catchment vegetation 🧬🌱 www.nature.com/articles/s43...

1 month ago 4 1 0 0
Three people wearing fluorescent winter clothing stand with coring equipment in the snow

Three people wearing fluorescent winter clothing stand with coring equipment in the snow

ArcEcoGen making headlines! Our researchers drilled sediment cores from the bottom of Lake Asklundvatnet to read a natural archive of the past ~3000 years
www.frostingen.no/overraskende...

1 month ago 4 2 0 0
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Cored the only "lake" in Scotland 🏴󠁧󠁢󠁳󠁣󠁴󠁿 today! Another ~3 m of sediments full of #sedaDNA 🧬 for the #MEMELAND project

1 month ago 2 0 0 0
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Field work in the UK (🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿) again, coring lakes for the #Memeland project to analyze #sedaDNA of the past 2000 years

the weather decided to pose for a picture before the rain & wind picked up again

1 month ago 0 0 0 0
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Post-doctoral researcher (m/f/d, E13 TV-L, 100%)

2-year Postdoctoral Position – Middle to Upper Palaeolithic Transition at @unituebingen.bsky.social uni-tuebingen.de/en/faculties...

2 months ago 4 5 0 0

the porpoise of life

2 months ago 3 0 1 0
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Research Fellow in Biomolecular Archaeology at UCL Searching for an academic job? Explore this Research Fellow in Biomolecular Archaeology opening on jobs.ac.uk! Click to view more details and browse other academic jobs.

Job alert! 3 year post doc in my research group at University College London working on Roman Leather via biomolecular archaeology. #ZooMS #stableisotopes

www.jobs.ac.uk/job/DQJ187/r...

2 months ago 27 40 1 0
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Landscape reconstructions for Europe during the late Last Glacial (60–20 ka BP): a pollen-based REVEALS approach Abstract. Vegetation change during the Last Glacial period in Europe plays a crucial role in better understanding the ecosystem dynamics response to abrupt climate change. Yet, most quantitative recon...

Link to the related publication:
essd.copernicus.org/articles/17/...

2 months ago 0 0 0 0
PALVEG - REVEALS land-cover estimates for the Late Pleistocene

I have just deployed an update to my little PALVEG app that I created to facilitate the data visualization of pollen and pollen-based: oakern.shinyapps.io/PALVEG/

by using leaflet, the maps are now interactive and clicking dots on the map shows the percentage of land cover

give it a try!

2 months ago 2 0 1 0
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📢 New Blog Post
How can a rock from hundreds of kilometers away become a stone tool? Dr. Johanna Hilpert explains how HESCOR researchers study prehistoric #networks of interaction and #exchange 🌐🤝

🔗 read on here:
shorturl.at/f0t5G

#Magdalenian #LBK #Modelling

3 months ago 14 4 0 1
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#FieldworkFriday Coring lakes on the Orkney and Shetland Isles last summer for sedaDNA and lipids for the V2C project at Uni Tromsø. Exploring the transition from Viking to Christian landscapes and their interactions on a species-level

3 months ago 3 0 0 0
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Postdoctoral Research Fellow in Bioinformatics of eDNA (292346) | UiT The Arctic University of Norway Job title: Postdoctoral Research Fellow in Bioinformatics of eDNA (292346), Employer: UiT The Arctic University of Norway, Deadline: Tuesday, February 17, 2026

3-year postdoc position available in bioinformatics of eDNA @ University of Tromsø. The postdoc will develop new methods for processing and annotating DNA shotgun data from lake sediments with a focus on vascular plants.

Deadline 17th of February:
www.jobbnorge.no/en/available...

3 months ago 2 1 0 0
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Landscape reconstructions for Europe during the late Last Glacial (60–20 ka BP): a pollen-based REVEALS approach Abstract. Vegetation change during the Last Glacial period in Europe plays a crucial role in better understanding the ecosystem dynamics response to abrupt climate change. Yet, most quantitative recon...

🔔🔔New Paper 🔔🔔
Pollen-based REVEALS land-cover reconstructions for Europe during the latter half of the Last Glacial Period

essd.copernicus.org/articles/17/...

We show that glacial refugia and frequent openings of migration corridors may have played a substantial role human dispersal

5 months ago 8 5 0 0
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Postdoctoral Research Fellow in Bioinformatics of eDNA (292346) | UiT The Arctic University of Norway Job title: Postdoctoral Research Fellow in Bioinformatics of eDNA (292346), Employer: UiT The Arctic University of Norway, Deadline: Tuesday, February 17, 2026

3-year postdoc position available in bioinformatics of eDNA @ University of Tromsø. The postdoc will develop new methods for processing and annotating DNA shotgun data from lake sediments with a focus on vascular plants.

Deadline 17th of February:
www.jobbnorge.no/en/available...

3 months ago 2 1 0 0
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Excited to announce that I have started my new position as a Researcher at the University of Tromsø 🇳🇴. In the ERC-funded MEMELAND project we will employ a multi-proxy approach including sedaDNA, biomarkers, archaeobotany, pollen, and geochemistry to uncover the ecological landscape history of Europe

3 months ago 8 0 1 0
User interface of the PALVEG app. In the panel on the left hand side, various options such as the desired time interval, specific (groups of) taxa, and different display options can be selected. On the right hand side, maps are dynamically generated based on the user input.

User interface of the PALVEG app. In the panel on the left hand side, various options such as the desired time interval, specific (groups of) taxa, and different display options can be selected. On the right hand side, maps are dynamically generated based on the user input.

📢 New Blog Post
Understanding #reconstructions of past vegetation can be difficult….
@oliverkern.bsky.social introduces his PALVEG app to make the maps from #paleovegetation reconstructions more accessible to researchers across all disciplines! 💻🌳

🔗 read on here:
shorturl.at/dNas6

4 months ago 5 3 0 0
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What is a good model? - Hescor What's a (good) model? Dr. Annika Vogel highlights the questions that need to be answered and decisions that need to be made to appropriately model interdisciplinary phenomena - there are always trade...

📢 New Blog Post
What's a (good) model? Dr. Annika Vogel highlights the questions that need to be answered and decisions that need to be made to appropriately #model interdisciplinary phenomena - there are always tradeoffs!

🔗 read on here:
shorturl.at/JklT1

5 months ago 3 1 0 0
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Landscape reconstructions for Europe during the late Last Glacial (60–20 ka BP): a pollen-based REVEALS approach Abstract. Vegetation change during the Last Glacial period in Europe plays a crucial role in better understanding the ecosystem dynamics response to abrupt climate change. Yet, most quantitative recon...

🔔🔔New Paper 🔔🔔
Pollen-based REVEALS land-cover reconstructions for Europe during the latter half of the Last Glacial Period

essd.copernicus.org/articles/17/...

We show that glacial refugia and frequent openings of migration corridors may have played a substantial role human dispersal

5 months ago 8 5 0 0

🐝🐚🐙 Job Opening! 🐙🐚🐝

We are looking for a new collection manager for the macro-invertebarte collection at the Natural History Museum in Basel (CH).

I can only recommend the museum and the curator!

7 months ago 0 1 0 0