Johannes Edvardsson

Fieldwork in autumn colors. The forest was quiet and still, with only a group of deer for company. 🌳💍🔬🦌

Subfossil Friday! 🌳💍🔬

This week Johannes, our dendrometer & -chronology expert, and Martin, who used #dendrometer measurements from @hyltemossa.bsky.social in his BSc thesis, attended the Nordic #DendroNet meeting at @uninmbu.bsky.social organized by @daniellecreek.bsky.social
& visited the @icos-ri.eu station #Hurdal

Dendrometer workshop in Ås, Norway. 🇳🇴🌳

Peatland trees record strong and temporally stable hydroclimate information in tree-ring δ13C and δ18O Abstract. Peatland trees are valuable archives of paleoclimatic information; however, gaps persist in understanding the relationships between tree growth, peatland hydrology, and hydroclimate variable...

New publication on how we can use carbon and oxygen isotopes from peatland pines to study hydroclimatic changes. The study is a great collaboration between the projects TURBERAS (University of Geneva) and MOSS (Lund University). Enjoy! 🌳💍🔬 cp.copernicus.org/articles/21/...

Klimatministerns dyngspridarstrategi funkar — mot slappa medier

I TV4 fullbordas haveriet när programledaren frågar de båda debattdeltagarna ”du säger att utsläppen ökar, och du säger att de minskar, vad stämmer egentligen?”. Läs Sven Elanders krönika om klimatministerns nya strategi.

The Laboratory for Wood Anatomy and Dendrochronology, Lund university, received new samples from the underwater investigations at Bulverket on Gotland, carried out by Peter d’Agnan & his team. Analyses are now underway, and we’re hoping for new insights into this remarkable site.

lnkd.in/dBjtFbYR

BECC Annual Meeting 2025 - Restoring Nature under Climate Change, Halmstad, Sweden!

Disentangling intra-annual Pinus sylvestris growth responses to hydro-climatic conditions: Insights from quantitative wood anatomy in peatlands Peatlands are vital ecosystems that regulate global carbon storage and hydrology, driven by waterlogged conditions that foster organic matter accumula…

New publication about intra-annual growth responses in pine trees to hydro-climatic conditions. The study is a collaboration between the TURBERAS (University of Geneva) and MOSS (Lund University)
Enjoy! 🌳 💍 🔬

www.sciencedirect.com/science/arti...

Sage Journals: Discover world-class research Subscription and open access journals from Sage, the world's leading independent academic publisher.

New publication about the development of Fagus-dominated forest in Söderåsen National Park, in response to land-use changes over the past 600 years. Enjoy! 🌳🔬

journals.sagepub.com/doi/10.1177/...

Found my MSc thesis when we moved the lab, 132 subfossil trees measured in DOS and examined on a light table. I've been around for a while. 🌳💍🔬

Congratulations!

Time to start the journey home from Umeå after an intense week in which I held a workshop, moderated, presented posters, had lots of meetings and listened to numerous presentations about new research projects. #TRACE2025 #Dendrochronology

Resolving troubling discord in Boreal versus Austral late Holocene temperature history | BOREAUSTRALIS | Projekt | Fact Sheet | HORIZON | CORDIS | European Commission According to temperature reconstructions based on natural climate proxy archives (ice cores, lake sediments, tree rings etc.), Northern and Southern Hemisphere (NH, SH) temperature histories differ in...

2 PhD positions in dendroclimatology! cordis.europa.eu/project/id/1...
The project is centered around working up millennium-long wood anatomical datasets to reconstruct temperature.
web103.reachmee.com/ext/I005/103...
Deadline 30th of June. For questions, contact: jesper.bjorklund@gu.se

Low cross-taxon congruence and weak stand-age effects on biodiversity in Swedish oak forests - Biodiversity and Conservation Assessing cross-taxon congruence is vital for effective forest conservation, because different taxonomic groups may respond inconsistently to key habitat variables such as stand age. We examined six t...

New paper on stand-age effects on biodiversity in Swedish oak forests. Enjoy 🌳

link.springer.com/article/10.1...

Meeting at SLU about trees in urban environments and how we should plan the vegetation in our cities in a changing climate. 🌳💍🔬

Tree-ring talks during the day and a drink in the evening! Sounds like a great day!

Tree-ring talks during the day and a drink in the evening! Sounds like a great day!

More teaching in the field, today about peatland development and how their hydrology affects tree establishment and growth. 🌳☀️💦

Field teaching on treeline movements, slope processes, dendrochronology and climate change! 🌳

Good working day visiting two peat bogs for data download from dendrometer, water sampling, and nice weather! 🌳💍🔬☀️💦

Yes, it will be very rewarding if I succeed!

Dating burnt archaeological wood pieces is a challenge. I managed to piece together a coherent series of tree rings spanning 77 years, let's see if that's enough for a dating. 🌳💍🔬

Another day on the peat bog to maintain and read dendrometers to see how the trees react to rewetting. 🌳💍🔬

Battery replacement and maintenance of my dendrometers at Store Mosse! Some problems, but the weather was nice. 🌳💍☀️

Straight from the press, our new book "Fantastiska ringar" (Fantastic Rings)! The book explores dendrochronological research with a focus on Sweden. Book release on April 24, so more information will follow later! 🌳💍🔬

Looking forward to part 2!

Photo of an oak hull plank from a Medieval boat. Lines incised on its surface form an image of an anchor.

Dendroarchaeology friends!
Just a reminder of our Dendrochronologia special issue - Dendrochronology and Knowledge of the Human Past.
The first paper is already through the review process, out soon.
Submit your paper through this link:
www.sciencedirect.com/special-issu...
🌳💍🏺

IPS Annual Convention 2025 - International Peatland Society Annual Meetings, Seminar and Excursion Peatlands for Environment, Economy and Society 9-12 June 2025 Gysinge, Sweden Enjoy the week before sunny Midsummer in Sweden, together with peatland scientists,...

This year's IPS Annual Convention will be held in Gysinge, Sweden. Don't miss this unique opportunity to connect with peatland scientists and experts!
peatlands.org/event/annual...

Klimatforskaren Michael Mann: ”Trump är i krig mot mänskligheten” FORTSATT GALENSKAP:: Trump har givit order om att massor av skog ska huggas ned, att USA ska dra sig ur fonden för de mest sårbara för klimatförändringar och vill visa att global uppvärmning är bra fö...

Trump har givit order om att hugga ner träd på en yta tre gånger större än Sverige, och att USA ska lämna fonden som ersätter dem som drabbas hårdast av klimatförändringar. Nu vill han även visa att global uppvärmning är bra för mänskligheten...