Justine Karst 🇨🇦
@j-karst.bsky.social
2.1K followers 370 following 340 posts
Associate Professor, U of Alberta. President of the International Mycorrhiza Society. I study the mycorrhizal ecology of forests. Less hype, more hyphae.
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Reposted by Justine Karst 🇨🇦
woodyroots.bsky.social
🚨SAVE the DATE🚨 "9th International 🧪 Symposium on 🍁Woody Root Research" 3-5 June 2026, Como, Italy. www.uninsubria.eu/woody-roots-ix ... Sessions: #root #ecology, #mycorrhizal dynamics, #belowground #technologies, #agroforestry applications, & #globalchange, ... SIGNUP for NEWSLETTER: bit.ly/4mXU6Nt
Welcome to the 9th International Symposium on Physiological Processes in Roots of Woody Plants. Join leading researchers, students, and professionals in Como, Italy to explore how woody roots contribute to sustainability, soil health, and plant production across diverse ecosystems. The images shows the logo, conference titel and venue 2-5 June 2026 in Como, Italy
Reposted by Justine Karst 🇨🇦
journalofecology.bsky.social
How do tree seedlings respond to multiple climate stressors?🌴

📖Our meta-analysis shows that CO₂ boosts growth, but only if drought isn't present. The combination of CO₂, drought and temperature mainly had additive effects🌳

🔎Read more: buff.ly/agUryqs
j-karst.bsky.social
This study doesn't seem to strengthen the hypothesis that mycorrhizal fungi helped plants colonize land. There seems to be a lot of uncertainty around this point. However, I'm the first to admit that I'm not trained in these kinds of analyses, so please straighten me out!
j-karst.bsky.social
I'm puzzled by '1/3'. Assuming myc fungi can't select C from fossil fuels but receive C in proportion to magnitude of sources, wouldn't the value be < 2%? Screenshot of my calculations below. Thanks for helping me sort this out.
Reposted by Justine Karst 🇨🇦
centre-seve.bsky.social
Il est encore temps de s'inscrire aux Journées Centre SÈVE!

‼️Date limite : 6 octobre 2025

🗓️ 20-21 novembre 2025

📍 Hôtel Chéribourg, Orford

✨ Nos conférencier-ères invité-es: Pre Justine Karst @j-karst.bsky.social (@ualberta.bsky.social) et Pr Frank Sainsbury (@griffith.edu.au)
centre-seve.bsky.social
Journées Centre SÈVE : inscriptions ouvertes 🙌

Le Centre SÈVE est heureux d'annoncer l'ouverture des inscriptions pour son congrès annuel, les Journées Centre SÈVE, qui aura lieu les 🗓️ 20-21 novembre 2025 !

Pour plus de détails 👉 event.fourwaves.com/journees-sev...
Reposted by Justine Karst 🇨🇦
mycorrhizaims.bsky.social
Meet Plenary speakers of @icom2026.bsky.social

Prof. Marc-André Selosse - from Muséum national d’Histoire naturelle (Paris) - will be opening the session "Moving forward while looking into the past: How the evolutionary history of mycorrhizas informs future adaptation pathways" #ICOM2026
Reposted by Justine Karst 🇨🇦
mycorrhizaims.bsky.social
Grateful to all IMS members who joined our 1st Annual Meeting! 🙌
We shared key advances from this past year, ICOM info & more.
Huge thanks to our members. For those who could not attend we will share the meeting video. TIP: Check your spam inbox!

#Mycorrhiza #IMS
j-karst.bsky.social
2025 Lab group photo. Small but mighty!
Lab group: Justine Karst, Jacob Beauregard, Alexandra Hallin Carlsson, Ferf Brownoff, Kyle Taylor. Missing Liam Easton.
Reposted by Justine Karst 🇨🇦
ecologyofgavin.bsky.social
This is well researched. But I bristle at the idea of this as a “scientific standoff.” A hallmark of science is that there are almost always contrary paradigms challenging the dominant one. But you have to know when the weight of evidence is on different planets.

news.mongabay.com/2025/08/old-...
Old forests, new fires, and a scientific standoff over active management
This is the second installment of Mongabay’s coverage of active management tools for forest fires. Read Part 1. Photographs of forests in the western U.S. from the mid-1800s show a starkly different r...
news.mongabay.com
j-karst.bsky.social
Can you please post information on another platform, too? (I am not on LinkedIn)—thank you!
j-karst.bsky.social
Fun fact: Nicole hand-textured soils from the 80 field sites, and was wrong only once!

Thanks to Sasha Hararuk with NRCan Canadian Forest Service
and my dept colleague Sylvie Quideau for all their help. Thanks ‪@friresearch.bsky.social‬ for funding.
j-karst.bsky.social
We found that soil carbon stores in disturbed forests were resistant, and mycorrhizal shifts did not substantially alter long-term soil carbon dynamics. Lots of caveats in Discussion.
j-karst.bsky.social
Given the distinct effects EM and AM fungi have on nutrient and C cycling, we thought shifts in mycorrhizal dominance post-disturbance would coincide with changes in soil C. Nicole surveyed soils and vegetation in 80 lodgepole pine-dominated sites; half disturbed 12–16 years ago and half intact.
j-karst.bsky.social
Mountain pine beetles have killed many trees in western boreal forests of Canada. In some areas, ectomycorrhizal pine stands have been replaced by arbuscular mycorrhizal vegetation.
Reposted by Justine Karst 🇨🇦
ctvnewskitchener.bsky.social
Canada Post features fungi and lichen in new stamp series - Canada Post has unveiled its new stamp collection Wednesday featuring fungi and lichens found in the country.
Canada Post features fungi and lichen in new stamp series
Canada Post has unveiled its new stamp collection Wednesday featuring fungi and lichens found in the country.
bit.ly
Reposted by Justine Karst 🇨🇦
cmarin.bsky.social
Call for symposia at @ICOM2026 is open until 15 October.
The 13 conference of @mycorrhiza_ims #Mycorrhiza will take place in Cairns, Australia, 12-17 July 2026!
@southmycorrhiza @karst_justine @fmartin1954 @1pantunes #soil #fungi

icom2026.org/symposia/
Reposted by Justine Karst 🇨🇦
jonathancazabonne.bsky.social
Thrilled to announce that the special issue on fungal #conservation that @cfemycolab.bsky.social and I are co-editing for the @britmycolsoc.org.uk c.org.uk journal Fungal Ecology is open for submissions!
www.sciencedirect.com/special-issu...
j-karst.bsky.social
Who canoes/hikes +3000 km to find a bird nest in the Canadian Arctic? Adam Shoalts does. Though I’m sure he was ready to go home, I didn’t want the adventure to end. What an amazing guy. What beautiful and ecologically important landscapes we have.
Where the Falcon Flies-by Adam Shoalts