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Bevan Weir

@rhizobia.nz
1.1K followers 969 following 237 posts

New Zealand mycology / bacteriology scientist at Manaaki Whenua working on 🍄 #fungi and 🦠 #bacteria taxonomy mostly using 🧬 on 🧫. Hobbies: #fountainpens, #cycling, #homebrew, #photography, and #archery website: rhizobia.nz/about

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Bevan Weir @rhizobia.nz · 07/09/2026
New paper on the risk of Rapid ʻŌhiʻa Death to New Zealand & the S Pacific. This cross #BSI collaboration, supported through #B3NZ, assesses threats to pōhutukawa, rātā and other hosts, identifies spread pathways, and highlights priorities for surveillance and preparedness. doi.org/10.1007/s105...
Maps of New Zealand a and b showing: 

Estimate of suitability of Aotearoa New Zealand regions for the establishment of rapid ‘ōhi’a death (ROD) pathogens Ceratocystis lukuohia and C. huliohia, predicted by Hawaiian temperature-disease relationships (Fortini et al. 2019) for (a) mean annual temperature, and (b) mean temperature of the warmest quarter. Grey indicates mean annual temperature ≤10.7°C (temperatures below those recorded in Hawaiʻi). Orange indicates temperatures between 10.7 and 13.6°C, red indicates temperatures above the 13.6°C threshold for disease presence, up to the maximum mean annual temperature for Aotearoa New Zealand, 16.2°C, and maximum mean temperature of the warmest quarter, 25.0°C. Mean annual temperature and temperature of the warmest quarter data from 1950–1980, NZEnvDS (McCarthy et al. 2021a, 2021b)
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Amy Thorpe @amycthorpe.bsky.social · 27/11/2025
Our national-scale study of bacterial biogeography and function in river biofilms has just been published in Nature Communications! @natcomms.nature.com 🦠🧬 Read the paper here: www.nature.com/articles/s41...
nature.com
National-scale biogeography and function of river and stream bacterial biofilm communities - Nature Communications
Here, the authors conduct a metagenomic-based study of England’s rivers to show that biofilm bacteria are taxonomically and functionally diverse and are key to biogeochemical cycling, highlighting the...
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Bevan Weir @rhizobia.nz · 16/08/2026
The Local Organising Committee at #ISME20 Julie and I are the welfare officers. We have ‘office hours’ at the ISME booth, but contact us anytime
Headshots of the ISME20 LOC. I have picked up a few grey hairs since that photo!
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Bevan Weir @rhizobia.nz · 16/08/2026
The ISME fellows!
The first ISME fellows. Nine people on stage with PowerPoint background with their names
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Bevan Weir @rhizobia.nz · 16/08/2026
Wow 1924 people attending #ISME20
A dark conference hall filled with people on seats
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Bevan Weir @rhizobia.nz · 16/08/2026
Amazing that #ISME20 is in my home city this year. My first ISME was in Mexico 24 years ago. I’m on the LOC so hit me up with any questions
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Bioeconomy Science Institute @bioeconomyscience.bsky.social · 03/08/2026
🍄 What does a lifetime of studying fungi look like? In our latest Scigest podcast, renowned mycologist Peter Buchanan reflects on the career that has taken him deep into the remarkable world of fungi. 🎧 Listen bit.ly/4yVO8DT
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Mike Dickison @adzebill.bsky.social · 25/07/2026
Over the last 18 months @thneed.bsky.social and I have been experimenting with being Wikipedians (or Wikimedians) in Residence at conferences—photographing academics, checking they and their papers are in Wikidata, and improving Wikipedia articles related to their research.
Mike and Tamsin with their bestickered laptops at the University of Otago
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Bevan Weir @rhizobia.nz · 18/07/2026
Great to see Dr Greta Stevenson's remarkable legacy featured by 1News. Kew's digitisation project is making historic fungal collections accessible to researchers worldwide. I had a brief cameo explaining why these specimens still matter today. www.1news.co.nz/2026/07/18/r... #mycology
1news.co.nz
Renowned London gardens shine light on Kiwi scientist's work
The renowned Royal Botanic Gardens, Kew, has recently digitised more than seven million plant and fungal specimens, including hundreds of Dr Greta Stevenson's discoveries from New Zealand.
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Bevan Weir @rhizobia.nz · 15/07/2026
Great advice and commentary on the first bird flu detection in New Zealand by @natforsdick.bsky.social 🪶 www.rnz.co.nz/national/pro...
rnz.co.nz
Bird flu is in New Zealand, here’s what to look out for
This afternoon it was confirmed that bird flu has been detected on our shores. Biosecurity Minister Andrew Hoggard said a brown skua had tested positive after it was found on Petone Beach in Wellingto...
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IMA Fungus @imafungus.pensoft.net · 14/07/2026
🍄🌏 Save the date! The 13th International Mycological Congress #IMC13 comes to Incheon, Republic of Korea, 8-12 August 2027! Join mycologists worldwide for cutting-edge science, symposia & networking. Abstract submission opens Aug 2026. Details: imafungus.pensoft.net/news/1340 @ima-mycology.org
imafungus.pensoft.net
The 13th International Mycological Congress (IMC13) 2027 - Join the Global Mycology Community in Korea
The 13th International Mycological Congress (IMC13) will be held from 8-12 August 2027 in Incheon, Republic of Korea. Organized by the Korean Society of Mycology (KSM) in collaboration with the Intern...
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Microbiology Society @microbiologysociety.org · 03/02/2026
Using a ‘one strain-many compounds’ approach to screen a collection of diverse fungi from Aotearoa New Zealand for antibacterial activity against Escherichia coli. Published Open Access and fee-free Microbiology: doi.org/10.1099/mic.0.001641 #MicrobioJ
Fig. 1.
Schematic of experimental workflow. Schematic produced using Biorender.com.
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Peter Dearden @peterkdearden.bsky.social · 27/06/2026
on the destruction of New Zealand Science open.substack.com/pub/peterkde...
open.substack.com
on the destruction of New Zealand Science
and earthquakes
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Tony from Welly @tonywelly.bsky.social · 28/05/2026
See the last one🤬 #nzpol
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Bevan Weir @rhizobia.nz · 27/05/2026
I was pleased to be nominated for a Science NZ award for my work on the toxic fungus that causes the disease 'facial eczema' in cattle and sheep. It was a great awards evening showcasing the science of many people and groups. Short video of finalists in my category: www.youtube.com/watch?v=mxbY... 🧪
youtube.com
Science New Zealand 2026 - Collaboration for Impact Finalists.
Science New Zealand 2026 - Collaboration for Impact Finalists. Featuring scientists from the Public Research Organisations; Bioeconomy Science Institute, Earth Sciences New Zealand, and Public Health…
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Kate Evans @kategevans.bsky.social · 18/05/2026
500 years ago, people starting building pā all over northern NZ—fortifying their settlements with rows of palisades, cut from nearby bush. Why? What were pā defending—or trying to say? The trees themselves, combined with mātauranga Māori, tell a story. www.nzgeo.com/stories/the-... 🇳🇿🧪 #archaeology
nzgeo.com
The pā builders
Five hundred years ago, people starting building pā all over northern New Zealand—fortifying their settlements with rows of pointed palisades, cut from the surrounding forests. Why? What were pā defen...
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Bevan Weir @rhizobia.nz · 20/05/2026
Again @peterkdearden.bsky.social nails it with commentary on the latest 'Moa de-extinction' story. The artificial egg tech is cool by its-self , don't over hype it! 🧪 www.rnz.co.nz/national/pro...
rnz.co.nz
Professor weighs in on moa de-extinction claim
Colossal Biosciences says it has successfully hatched healthy chicks from an artificial egg, which it claims is a key step towards bringing the moa back to life. Professor Peter Dearden is Director of...
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Cate Macinnis-Ng @loraxcate.bsky.social · 18/04/2026
PhD opportunity- fully funded with stipend, fees and project costs covered. Explore the role of phosphite in treating kauri dieback disease. Applications due 8th May. Please spread the word! newzealandecology.org/phd-explorin...
A kauri tree looking towards the canopy.
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Bevan Weir @rhizobia.nz · 22/04/2026
Vote for Aotearoa New Zealand’s Fungus of the Year 2026! We have launched the annual vote for #NZ's favourite fungus: interactives.landcareresearch.co.nz/foty/ 🧪 #fungi #mycology
interactives.landcareresearch.co.nz
Vote for NZ's Fungus of the Year 2026 - Interactives | Bioeconomy Science Institute (Manaaki Whenua Group)
Vote for your favourite fungus, or maybe vote for a fungus that is threatened, or culturally important, or edible, or (on the negative side) one that’s causing an important disease.
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Laurie Winkless @lauriewinkless.bsky.social · 27/03/2026
An essential read for anyone in #nz - the fuel crisis is far, far worse than the govt is letting on energyandresilience.substack.com/p/every-coun...
energyandresilience.substack.com
Every Country in Our Supply Chain Has Declared an Emergency. NZ just launched an Ad Campaign.
What the ministerial press conference got wrong about NZ's fuel supply, and what it didn't mention at all.
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Carl T. Bergstrom @carlbergstrom.com · 14/03/2026
Welcome swallows (what a great name) off Kapiti in Aotearoa.
Swallow low over the waterSwallow locked tf in on a bug
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Bevan Weir @rhizobia.nz · 08/03/2026
Full-time science photography job at the BioEconomy Science Institute - Maiangi Taiao, in Auckland, NZ. a great gig: careers.sciencenewzealand.org/jobdetails?a... #science #photography
careers.sciencenewzealand.org
60226 Photographer - Plant & Food Research - Careers at Science New Zealand
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Bevan Weir @rhizobia.nz · 10/01/2026
Spent some time before Xmas in Dunedin. Sandfly Bay is a lovey spot!, no wonder @paullecomtephoto.nz & @peterkdearden.bsky.social and many others live in the region! #nz #nikon Z8 panorama
Panorama image of a beach in the distance flanked by green hils
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Krista Bonfantine 🔥💧 @aridideas.bsky.social · 27/12/2025
The latest from the Kobziar Fire Ecology Lab with a photo taken by yours truly. We’ve recovered many fungal pathogens in wildland fire 🔥 smoke. Viability was confirmed through culturing & mice developed lung disease when exposed. Lots still to learn abt smoke as a microbial reservoir & vector. 🧬💻🧪
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Bevan Weir @rhizobia.nz · 10/12/2025
Black-billed gull (Chroicocephalus bulleri) [Tarāpuka] on the beach in Gisborne, NZ, more slender and less common than the Black-billed gull, this one was was still eyeing up some unattended bags for possible lunch! Shot on #Nikon Z8 with a 180-600 @ 600mm, f/6.3, 1/1250, ISO250 #birds #nzbirds
a small gull with a dark black bill, looking up towards the sun. standing on grass.
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Bevan Weir @rhizobia.nz · 07/12/2025
Royal spoonbills (Platalea regia) [Kōtuku ngutupapa] on mud flats in a blustery breeze in Auckland, NZ. Curious looking birds that self mitigated from Australia. Brief video of the same scene: youtu.be/BkeTZXX6hC4 Shot on #Nikon Z8 with a 180-600 @ 600mm, f/6.3, 1/640s, ISO90 #birds #nzbirds
Royal spoonbills, a white bird with a curious black spoon-shaped bill
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Dr Abeba Birhane @abeba.blacksky.app · 03/12/2025
an important read for at least 2 reasons: 1. shows how big tech operates on intuitions and vibes and not rigorous research 2. this is a masterpiece in how to breakdown complex scientific concepts in simple language and elegant pros that captivate the lay reader taranis.ie/datacenters-...
taranis.ie
Datacenters in space are a terrible, horrible, no good idea.
There is a rush for AI companies to team up with space launch/satellite companies to build datacenters in space. TL;DR: It's not going to work.
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Kim Snowden @kimsnowden.bsky.social · 10/04/2025
I made a new animal cell cane
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Ketan Joshi @ketanjoshi.co · 19/11/2025
"Procrasti-activity" is one of the most hideously-constructed phrases I've ever seen but holy hell do I relate to it deeply
Mrs Lightfoot says ADHDers may doomscroll on our phones or stare out windows, but task paralysis can also look like "procrasti-activity, doing all the other less important things on the list".
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Paolo Crosetto @paolocrosetto.bsky.social · 12/11/2025
What is the most profitable industry in the world, this side of the law? Not oil, not IT, not pharma. It's *scientific publishing*. We call this the Drain of Scientific Publishing. Paper: arxiv.org/abs/2511.04820 Background: doi.org/10.1162/qss_... Thread @markhanson.fediscience.org.ap.brid.gy 👇
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Craig McCormick @craigmccormick.bsky.social · 15/11/2024
This is true. Measles virus can infect and kill your memory B and T cells, effectively wiping out your immune system’s record of past infections or vaccinations. Good article here journals.plos.org/plospathogen...
journals.plos.org
On invariant T cells and measles: A theory of “innate immune amnesia”
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Associate Professor Siouxsie Wiles @siouxsiew.bsky.social · 31/10/2025
Morning peeps! I’ve written a piece for @thespinoff.bsky.social on why I ended up taking legal action against my employer and a little bit about how it played out. The whole story needs a book to tell but this is a good start 😂 thespinoff.co.nz/society/01-1... thespinoff.co.nz/society/01-1...
thespinoff.co.nz
Siouxsie Wiles: Why I’m crowdfunding despite winning my legal battle
'Between the ERA and the Employment Court, my husband and I have spent over $632,000.'
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Rabern Simmons, PhD🔬💧🍄 @drrabern.bsky.social · 31/10/2025
Witches and fungi and rye, oh my! 🧙‍♀️🍄🍞🔥💀 #herbarium #herbaria #FungalFriday #FungiFriday #Halloween ag.purdue.edu/news/2024/10...
ag.purdue.edu
Could a fungus be behind the Salem witch trials?
Mass hallucinations and paranoia. Seizures and bodily convulsions. From 1692 to 1693, the town of Salem in the Massachusetts Bay Colony tried approximately 200 people for their crimes of witchcraft. W...
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Bevan Weir @rhizobia.nz · 30/10/2025
With the rising measles cases in NZ I thought I better check that I was up to date with my vaccinations. Turns out I had one in 2019 thanks to a tweet by my colleague @siouxsiew.bsky.social during a previous outbreak!
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GBIF Morpho 🦋 @gbifmorpho.bsky.social · 09/07/2025
Global diversity analysis of plant-associated Pseudopithomyces fungi reveals a new species producing the toxin associated with facial eczema in livestock: Pseudopithomyc…... published in Studies in Mycology using @gbif.org mediated data: #CiteTheDOI: ✅ doi.org/10.3114/sim.2025.112.02
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Strike Map @strikemap.org · 22/10/2025
Today, we send solidarity greetings to all involved in the #NewZealand #Megastrike. 100,000 teachers and medical staff taking action. Share this post and support the strike. #StrikeMap
Poster showing support for the New Zealand MegaStrike, featuring a crowd of protesters with banners, dated 23/10/25, emphasizing demands for safe staffing, fair pay, and real respect.
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Bevan Weir @rhizobia.nz · 21/10/2025
No Microsoft Word spell check, I did actually intend the word "Species" not your suggested spelling "skirr Hodon"
screenshot showing silly suggested spelling correction
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International Union of Forest Research Organizations - IUFRO @iufro.bsky.social · 06/10/2025
🌍🌱 Abstract submissions are OPEN! Join the 12th IUFRO WP 7.02.09 Meeting: Phytophthora in Forests & Natural Ecosystems 📍 Grabouw, South Africa 📅 13–18 Sept 2026 ⏳Submit your abstract by 24 March 2026 👉 iufro-sa2026.carlamani.com #Phytophthora #Forests #ForestScience #ForestResearch
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Neil Gow @neil-gow.bsky.social · 03/10/2025
Happy U.K. Fungus Day. This was drawn using the ink from a shaggy ink cap growing in my own garden.
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Bevan Weir @rhizobia.nz · 13/09/2025
Sacred kingfisher (Todiramphus sanctus) [Kōtare] perched on a tōtara branch in Auckland, New Zealand. Shot on #Nikon Z8 with a 180-600 @ 600mm, f/6.3, 1/1250s, ISO7200 #birds #nzbirds
a kingfisher bird with bright blue wing feathers and white to tan chest feathers perched looking to the left
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Dr. Danny Haelewaters 🏳️‍🌈🍄🪰🦇🔬🧬 @dhaelewa.bsky.social · 01/09/2025
I started this #Mycologists Starter Pack, aiming to get all professional fungal researchers on BlueSky in one place. DM if you want to be added. go.bsky.app/UMrVSsp
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Bevan Weir @rhizobia.nz · 31/08/2025
China Eastern Airlines CES711 having a bit of trouble landing in this #Auckland wind, did a go around.
plane flight tracking
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Bevan Weir @rhizobia.nz · 30/08/2025
Silvereye (Zosterops lateralis) [Tauhou] perched at dusk on a willow twig in Auckland, New Zealand. Shot on #Nikon Z8 with 180-600 @ 600mm, f/6.3, 1/1600s, ISO2800 #birds #nzbirds
small green, brown, and grey bird with a striking white rim around its eye perching on a small twig
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Bevan Weir @rhizobia.nz · 24/08/2025
Swamp harrier (Circus approximans) [kāhu] circling overhead during golden hour in Auckland, New Zealand. Shot on Nikon Z8 with 180-600 @ 600mm, f/8, 1/1250s, ISO500 #birds #nzbirds
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Bevan Weir @rhizobia.nz · 20/08/2025
Rare taxonomic #mycology job in NZ! Conduct fungal biodiversity & taxonomy research, secure funding, publish outputs. Working with the National Collections. PhD + postdoc experience required 🧪. Apply here: careers.sciencenewzealand.org/jobdetails?a...
example mushroom you could be working on!The team!
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Bevan Weir @rhizobia.nz · 31/07/2025
@dylanreeve.com Congratulations!
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Bevan Weir @rhizobia.nz · 31/07/2025
the suspense! #internetnz
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KnitMeAThneed @thneed.bsky.social · 22/07/2025
Oooh! Think I just discovered an entire fake scientific society website...with a very impressive list of fellows, and a nice large donate button!
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Bevan Weir @rhizobia.nz · 15/07/2025
Ah nice, AirNZ is doing a domestic Wifi trial on two of the A320D aircraft. Just left Auckland…
View from airplane widow in flight with sea and coastline
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Nandor Tanczos @nandortanczos.bsky.social · 14/07/2025
The cosmic jester strikes again
theguardian.com
‘Explosive increase’ of ticks that cause meat allergy in US due to climate crisis
Unusually aggressive lone star ticks, common in the south-east, are spreading to areas previously too cold for them
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