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Natalie Ahlstrand

@natalieahlstrand.bsky.social
222 followers 216 following 21 posts

Botanist | Assistant Professor & Curator | Natural History Museum Denmark | Science & Society plant phenology & traits, herbaria, digital museum collections, citizen science, lychophytes, graminoids, peatlands, arctic plants, wild food plants

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Reposted by Natalie Ahlstrand
Dr Scott J. Davidson @wetlandresilienceresearchgroup.com · 11/02/2026
🚨 #PhD opportunity 🚨 Disturbance Impacts on swamp and forested peatlands in southern Québec This project will quantify how disturbances affect carbon cycling and hydrology in swamp and forested peatlands of southern Québec More info here: wetlandresilienceresearchgroup.com/Opportunitie...
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Annals of Botany @annbot.bsky.social · 07/01/2026
⏳ There’s still time to submit! The call for papers for the Special Issue Seedling Traits and Climate Change remains open until February 1, 2026 🗓 We look forward to your research on how early plant life stages respond to a changing climate 🌱 👉 botany.fyi/htj54e
Green flyer for an Annals of Botany Special Issue, “Seedling Traits and Climate Change,” listing the editor and guest editors, with a February 1, 2026 submission deadline and a photo of sprouting seeds.
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New Phytologist @newphyt.bsky.social · 03/11/2025
Next-generation specimen #digitization: capturing #reflectance spectra from the world's #herbaria for modeling plant biology across time, space, and taxa #TansleyReview by Jeannine Cavender-Bares, et al. nph.onlinelibrary.wiley.com/doi/10.1111/... #PlantScience
Herbarium spectral digitization workflow from specimen collection to global integration, and challenges.
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 14/11/2025
Capturing reflectance spectra from specimens of critically endangered plants in Denmark and Germany, Eriophorum gracile and Saxifraga hirculus. Comparing historical populations with 2025 samples collected by @nhmdk.bsky.social PhD student Sverre Schou. At Senckenberg Institute Plant Form & Function
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Robert G. Björk @robertgbjork.bsky.social · 08/10/2025
🌍Tenure-track call at GU Earth Sciences🇸🇪! Seeking top ECRs (PhD≤5yrs) for nomination to the 🇸🇪 Research Council’s strategic programme 🔬5 yrs | 💰SEK 3M/year 📅Deadline: Nov 19 | Start: Autumn 2026 Research: Climate, Geosphere, Ecosystems 🔗 gu.se/en/earth-sciences Contact: robert.bjork@gu.se or DM me
gu.se
Department of Earth Sciences
Earth Sciences is the studying of the Earth and its history as well as the processes that operate in and on the Earth's surface. We study how humans use the Earth, its natural resources and the conseq...
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Reposted by Natalie Ahlstrand
David Roberts @volts.wtf · 08/10/2025
A new Nature study on the four horsemen of the climate-tipping-points apocalypse: "the Greenland Ice Sheet, the Atlantic Meridional Overturning Circulation, the South American monsoon system and the Amazon rainforest."
nature.com
Destabilization of Earth system tipping elements - Nature Geoscience
A review of observation-based evidence suggests that four interconnected Earth system tipping elements have moved towards their critical thresholds, highlighting the need for better monitoring and increased mitigation efforts.
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 15/09/2025
A wonderful opportunity for a fully funded #PhD position in collections-based research at Natural History Musuem Denmark @nhmdk.bsky.social Reach out if interested in a PhD project in #peatland #sedges, #aquatic plants, or #ferns! 🌿🍂🌾 #globalchange #eco-evo employment.ku.dk/phd/?show=16...
employment.ku.dk
PhD fellowship in collection-based Natural History Research
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Reposted by Natalie Ahlstrand
Oregon State University Botany and Plant Pathology @osubpp.bsky.social · 06/08/2025
The Department of Botany and Plant Pathology at Oregon State University is Hiring! We are searching for a Director of the Oregon State University Herbarium and applications are welcomed at the ranks of assistant, associate, or full professor.
Department of Botany and Plant Pathology at Oregon State University is hiring a Directory of the Herbarium
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 21/08/2025
Thank you @botany.one for covering our latest work on tracking changes in Arctic shrub growth in response to climate change over the past 120 years using digital herbarium specimens collected in Greenland. botany.one/2025/08/no-n...
botany.one
No need to put a ring on it
Digital images of herbarium specimens can be used to non-destructively measure woody plant growth and assess response to climate change in the Arctic.
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 21/07/2025
Searching for the critically endangered slender cottongrass, Eriophorum gracile, and other beautiful sedges in Danish #peatlands - with @ninaronsted.bsky.social & PhD student Sverre JS #bogs #fens #rareplants #botanicalresurveys
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Dr. Merritt Rae Turetsky @queenofpeat.bsky.social · 19/07/2025
Sphagnum mosses are fascinating from physiology, ecology, and climate perspectives. I'm especially proud of this @newphyt.bsky.social paper meant to inspire new research on ecoevolution and biodiversity. Check out the incredible cover art by Blanka Aguero! nph.onlinelibrary.wiley.com/doi/10.1111/...
Image of the cover of the New Phytologist journal showing a close up image of brown and orange Sphagnum plants.
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juli g pausas @jgpausas.bsky.social · 23/06/2025
Yes! Two independent studies, using very different approaches (and published in the same month), suggest that climate warming has been detectable since the late 19th C. Plants detected climate warming about 135 years ago! nph.onlinelibrary.wiley.com/doi/full/10.... | @newphyt.bsky.social 🧪🌍🌿🌾🌳🌐
nph.onlinelibrary.wiley.com
The onset of phenological plant response to climate warming
Click on the article title to read more.
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Brandon Samuel Whitley @brandonswhitley.bsky.social · 15/06/2025
I am excited to share that the first chapter of my PhD thesis has been published! The paper is titled “Harmonising digitised herbarium data to enhance biodiversity knowledge: Major steps towards an updated checklist for the flora of Greenland”. nph.onlinelibrary.wiley.com/doi/10.1002/...
nph.onlinelibrary.wiley.com
Harmonising digitised herbarium data to enhance biodiversity knowledge: Major steps towards an updated checklist for the flora of Greenland
Herbaria worldwide hold centuries of plant data that are key to understanding and protecting biodiversity; however, even with increased digital access, differences in plant naming systems make it dif....
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Science Magazine @science.org · 12/06/2025
As the world warms, plants in natural ecosystems and agricultural settings find ways to respond to the heat. In a new special issue of Science, researchers examine how heat affects plants at multiple scales, from the molecular level to the biosphere. scim.ag/44cSw3Z
Infrared imaging shows heat levels in sun-exposed leaves of Alstonia scholaris from the Australian Wet Tropics. As climate change increases temperatures and the severity of heat waves, both natural ecosystems and agricultural plants are increasingly affected by heat. Examining heat responses at cellular, genetic, physiological, and ecosystem scales, this special issue explores how plants sense and respond to high temperatures.
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Dr. Hilary Rose Dawson @hilaryrosed.bsky.social · 12/06/2025
For those following the #iNaturalist LLM/genAI uproar, the iNat team has responded with more details about how they envision this change. You can submit comments about the plan here: inaturalist.typeform.com/to/hCrKAbW0
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 10/06/2025
Herbarium specimens reveal drivers of Arctic shrub growth @newphyt.bsky.social Shrub specimens can be used to recreate annual growth chronologies and help understand plant responses to global change. With @annebeejay.bsky.social, ZA Panchen, JDM Speed nph.onlinelibrary.wiley.com/doi/10.1111/...
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Moreno Di Marco @m-dimarco.bsky.social · 10/06/2025
📢 New in @globalchangebio.bsky.social The Accelerating Exposure of European #ProtectedAreas to #ClimateChange We measure climate velocity and magnitude in Europe, and estimate risk for #ProtectedAreas and species. Paper and maps available OA doi.org/10.1111/gcb.... @martacimatti.bsky.social
Overlay of the values within the last quartile (higher values) from each climate risk metric for scenario SSP3-7.0. Areas in the map are color-coded based on their overlap with hotspots of exposure identified based on different climate metrics (Local, local velocity; Analog, analog velocity; Magnitude). Areas with no analogues within the 1500 km search radius (NA values on land) are shown as blank spots (i.e. central Greenland). Map lines delineate study areas and do not necessarily depict accepted national boundaries.
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Nature Portfolio @natureportfolio.nature.com · 07/06/2025
The deadline is soon! Nature has launched its seventh global survey of science, technology, engineering and mathematics (STEM) doctoral students, which will probe graduate students’ views about their goals and challenges, and their experiences of their studies so far. #Academicsky 🧪
go.nature.com
PhD students in STEM: Nature wants to hear from you
Buried in lab work or drowning in data? Take a break and help shape the future of PhD education.
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Natasha de Vere @ndevere.bsky.social · 07/06/2025
Thank you to @grrlscientist.bsky.social for covering our new paper in @plantspeopleplanet.bsky.social nph.onlinelibrary.wiley.com/doi/10.1002/...
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New Phytologist @newphyt.bsky.social · 06/06/2025
#Viewpoint: Cones and consequences: the false dichotomy of #conifers vs #broad-leaves has critical implications for research and modelling Kate Johnson, Matilda Brown, Katya Bandow & Helena Vallicrosa 👇 📖 nph.onlinelibrary.wiley.com/doi/10.1111/... #LatestIssue
Global distribution of conifer leaf widths and silhouettes of both broad-leaved conifers and nonbroad-leaved woody angiosperms.
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Nature Ecology & Evolution @natecoevo.nature.com · 03/06/2025
Read the accompanying News & Views commentary by Catherine Sheard 👇 "Some birds are left behind in a race to beat the heat" www.nature.com/articles/s41... Free to read: rdcu.be/epgXI Photo credits: Dave Menke (a; public domain), Glenn Bartley/All Canada Photos/Alamy Stock Photo (b).
Composite photo of a brown thrasher (Toxostoma rufum, winter range), and a Nashville warbler (Leiothlypis ruficapilla, summer range).
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WSL Umweltforschung @wslresearch.bsky.social · 14/05/2025
🌲🖥️ #PhDAlert! MSc in a #natural #science & experience with #tree-ring analysis and statistical software (R)? Fluent in English and ready for #fieldwork? Our #forest dynamics #research unit is looking for a #PhD candidate in #dendroecology and #ecophysiology! apply.refline.ch/273855/1736/...
PhD candidate in Dendroecology and Ecophysiology
The project involves fieldwork, lab analyses and manipulative experiments. The research sites are located in the Alps (Switzerland), Pyrenees (Spain), and Carpathians (Romania), and the experimental study will be conducted in Switzerland. You will apply dendroecological techniques to measure and analyse carbon and oxygen isotope ratios in the cellulose of tree rings as proxies of physiological changes. Additionally, you will participate in an experimental study on saplings growing along an elevational transect in the Alps, examining their morphological, physiological, and phenological responses to climate stressors (heat, drought, and frost). Ultimately, the goal is to rank species by their sensitivity to recent and future climatic stressors, helping forest managers select the most resilient species for each elevation zone.
You hold a Master’s degree in forest ecology, ecology, plant physiology, environmental science, or a related field. Ideally, you already have experience with tree-ring analysis, ecophysiology, or climate data analysis. You have a good command of English, enjoy working collaboratively, and are comfortable using statistical software, preferably R. You are in good physical condition so that you can move safely over rough terrain. In addition, you are independent, self-motivated, and eager to take on a challenging project that will contribute to a deeper understanding of how climate change affects forest ecosystems. This position offers an exciting opportunity for those seeking a career in dendroecology, ecophysiology, or climate change science. You will work in an international research environment with access to cutting-edge methods and collaboration opportunities in Spain and Romania. Working place will be at WSL in Birmensdorf (approx. 20 min outside of Zurich); PhD enrolment will be at University of Bern.
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Nature Portfolio @natureportfolio.nature.com · 24/05/2025
A study in Nature Climate Change shows irreversible global glacier loss for centuries after overshooting 1.5 °C of warming, implying long-term reductions in glacial water resources with amplified impacts in regions where glaciers regrow. ⚒️ 🧪
go.nature.com
Irreversible glacier change and trough water for centuries after overshooting 1.5 °C - Nature Climate Change
How mountain glaciers will react to temporarily overshooting 1.5 °C of warming is poorly understood. Here the authors show irreversible global glacier loss for centuries after overshoot, implying long-term reductions in glacial water resources with amplified impacts in regions where glaciers regrow.
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Iris Hordijk @iris-hordijk.bsky.social · 23/05/2025
Publication out on the effect of climate on traits of dominant and rare tree species in the world’s forests in natcomms.nature.com‬rdcu.be/enby2
rdcu.be
Effect of climate on traits of dominant and rare tree species in the world’s forests
Nature Communications - Species’ traits and environmental conditions determine the abundance of tree species across the globe. Here, the authors find that dominant tree species are taller and...
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Theresa Crimmins @theresacrimmins.bsky.social · 25/10/2024
Call for papers! Special issue in new @SpringerNature journal _Discover Life_ : Plant #phenology in an era of rapid global change: new perspectives and frontiers. Co-editing this collection with the fabulous Rob Guralnick and @diji.bsky.social link.springer.com/collections/...
link.springer.com
Plant phenology in an era of rapid global change: new perspectives and frontiers
Phenology is a crucial indicator of plant responses to environmental changes, with multifaceted implications for individual plants, ecological communities, ...
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 19/05/2025
Interested in how global specimen digitisation efforts are enabling large-scale phenology research? 🌱🌼🍂 Check out our Viewpoint article published on-line today in @newphyt.bsky.social doi.org/10.1111/nph.... #plantphenology #climatechange #herbariumspecimens #globalchange
doi.org
The promise of digital herbarium specimens in large‐scale phenology research
The online mobilization of herbaria has made tens of millions of specimens digitally available, revolutionizing investigations of phenology and plant responses to climate change. We identify two main....
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Botanical Society of America @botsocamerica.bsky.social · 16/05/2025
Check out this new #AJB essay by Jitka Klimešová, Timothy Harris & Tomáš Herben! Morphological knowledge in plant #ecology and why it matters doi.org/10.1002/ajb2... #botany #plantscience
Graphical art (lino-cut) showing functional ecologists busy with measuring leaf and fine root traits while ignoring storage and clonal growth organ
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European Citizen Science Association @ecsa.ngo · 06/05/2025
READ AND ENDORSE THE NEWLY PUBLISHED POSITION PAPER ON "CITIZEN SCIENCE FOR THE FUTURE OF EUROPE" #Citizenscience needs dedicated funding to succeed. Join us in advocating for more impactful citizen science in the upcoming European Framework Programme. citizensciencefp10.eu @ec.europa.eu @ecs.ngo
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 30/04/2025
Exploring the Harvard University Herbaria today! Digging into their rich botanical collections & for a project on the impacts of global change on sedges #Cyperaceae 💚
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 30/04/2025
Really important work on global changes in Arctic plants by @nanitundra.bsky.social et al.
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Jens-Christian Svenning @jcsvenning.bsky.social · 24/04/2025
🚨Postdoc opportunity @econovoau.bsky.social 🌍 Help forecast how rising ecological novelty reshapes #biodiversity & #vegetation 🌿 Work at the interface of species distribution models & dynamic global vegetation models 🌐🍃♨️- based in Aarhus, Denmark shorturl.at/t45JT #ecology #ecologyjob #macroecology
shorturl.at
2-yr postdoc on Forecasting Biosphere-Scale Effects of Ecological Novelty Using Species Distribution and Vegetation Models - Vacancy at Aarhus University
Vacancy at Department of Biology - Ecoinformatics and Biodiversity, Aarhus University
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 23/04/2025
A wonderful opportunity for PhD students or early career researchers interested in developing skills in insect taxonomy & ID
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Botanical Society of America @botsocamerica.bsky.social · 13/04/2025
🌱It's International Plant Appreciation Day!🌿 Support the plants & community that inspire you. Please consider making an unrestricted gift—it provides flexible support, ensuring resources go where they’re needed most: crm.botany.org/makeadonation Share your plant story! #LetsGoPlants #IamaBotanist
This image shows 8 BSA members near or holding plants and smiling. Text: “International Plant Appreciation Day, April 13, 2025. Support BSA with an Unrestricted Gift Today!” The image also includes the BSA logo.
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Dr Mark D. Scherz @markscherz.bsky.social · 10/04/2025
The Natural History Museum Denmark is hiring a new Tenure-Track Assistant Professor and Curator of (Vertebrate) Palaeontology! Could it be you or someone you know‽ spread the word! Really excited to have a new colleague to work on our amazing collections! 🧪🏛️ candidate.hr-manager.net/ApplicationI...
candidate.hr-manager.net
211-0238/25-2N Tenure-track Assistant Professor and Curator of Paleontology
Tenure-track Assistant Professor and Curator in Paleontology Natural History Museum Denmark Faculty of Science University of Copenhagen The Natural History Muse
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iDiv Biodiversity Research @idiv-research.bsky.social · 04/04/2025
New @nature.com study: the negative effect of human activities on wildlife biodiversity may be notable hundreds of kilometres away ⚠️ For the study, @ufz.de's and iDiv's @lottekorell.bsky.social recorded plant species and so-called dark diversity in the Lüneburg Heath. www.idiv.de/nature-study...
idiv.de
Dark diversity reveals global impoverishment of natural vegetation
Nature study shows that the potential occurrence of plant species is significantly higher
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 04/04/2025
Very nice study linking above and below ground plant growth and phenology 💚
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Dr. Hilary Rose Dawson @hilaryrosed.bsky.social · 01/04/2025
Exciting permanent(!) #JobAlert for a #botanist to work in Bergen, Norway 🧪 PhD required, language proficiency required within two years. Apply by 25 April. #Ecology #Restoration #Botany
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Florian Altermatt @florianaltermatt.bsky.social · 26/03/2025
Our study ‘The #global #human impact on #biodiversity’ is out in @nature.com: www.nature.com/articles/s41... 🌍🌐🐟🌿🪲 Unprecedented synthesis of >2000 studies led by @francoiskeck.bsky.social shows humans are not only shrinking species numbers—but reshaping entire communities across the planet. 🧵1/5
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Stefan Pinkert @pro-pink.bsky.social · 25/03/2025
A major milestone of our >4-year effort to bring #butterfly diversity and its threat to global attention. We show most species and hotspots cluster in mountains, with #climatechange projected to erode up to 67% of the thermal niche supporting this diversity. www.nature.com/articles/s41...
nature.com
Global hotspots of butterfly diversity are threatened in a warming world - Nature Ecology & Evolution
Butterflies are a large, functionally important and charismatic invertebrate group. Here, the authors characterize global macroecological patterns of butterflies and project shifts in their bioclimati...
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Centre for Polar Ecology @cpecz.bsky.social · 21/03/2025
We are stoked to present a brand-new @natclimchange.bsky.social paper by our Jan Kavan! ❤️ Did you know that between 2000 and 2020, retreat of marine-terminating glaciers has exposed more than 2,400 km of new coastline in the Arctic? 🧵👇
Recherchebreen marine terminating glacier on Svalbard
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 20/03/2025
I can’t think of a better way to celebrate the Spring Equinox than to purposefully wander around our botanical garden and monitor early spring flowering plants for our phenology research . . . . #spontaneousplants #phenobs #phenology #botanicalgarden #plantphenology #livingcollections
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Nature Ecology & Evolution @natecoevo.nature.com · 18/03/2025
Read the accompanying News & Views commentary from Anna Walentowitz👇 rdcu.be/ed0nL
rdcu.be
Ecological novelty is the new norm on our planet
Nature Ecology & Evolution - A global analysis of altered species compositions and climate change reveals the extent to which ecosystems, including in protected areas and biodiversity hotspots,...
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The Antonelli Lab @antonelli-lab.bsky.social · 13/03/2025
🌴 3-year postdoc in Biodiversity, Remote Sensing and AI based at the University of Gothenburg. 🌴 Last chance to apply for this exciting position. ⏱️ Deadline 17 March ⏱️. More details here: tinyurl.com/3hzdsset
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Natalie Ahlstrand @natalieahlstrand.bsky.social · 13/03/2025
A very nice study showing the impacts of habitat fragmentation and “edge effects” on plant reproduction.
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GBIF Morpho 🦋 @gbifmorpho.bsky.social · 13/03/2025
New paper in @natclimchange.bsky.social using @gbif.org mediated data: Extreme weather events have strong but different impacts on plant and insect phenology #CiteTheDOI: ✅ doi.org/10.1038/s41558-025-02248-7
nature.com
Extreme weather events have strong but different impacts on plant and insect phenology - Nature Climate Change
Using community data of 581 angiosperm and 172 Lepidoptera species, the authors consider the impacts of extreme weather events (EWE) on the timing of life events (phenology). They show high responsive...
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Hans Henrik Bruun @hhbruun.bsky.social · 11/03/2025
JOB ALERT! Postdoc opening in the use of geodata to guide the transition of land-use in Denmark to sustainability. Main collaborators: Martin Rudbeck Jepsen at Geography/UCPH and Hans Henrik Bruun at Biology/UCPH candidate.hr-manager.net/ApplicationI...
candidate.hr-manager.net
Postdoc in area prioritization for sustainable development of land use in Denmark
We are looking for a highly motivated and dynamic postdoc for a 2-year position from 15 June 2025 or as soon as possible thereafter. The position will be based
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Simon Kuestenmacher @simongerman600.bsky.social · 19/11/2024
This map was created in 1823 by Alexander von Humboldt - one of my favorite historical figures. It's the first isothermal map. Imagine creating isothermes! How cool is that! Source: buff.ly/3jfAAvG
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