The #DutchElmDisease takes its name from the fact that it was first discovered and studied by these three female Dutch scientists.
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#WomenInSTEM
#WomenInScience

Johanna Westerdijk was the first #female #professor in the Netherlands at a time when very few women had a place in #science.
Together with her two PhD students Marie Beatrice Schwarz and Christine Buisman, she identified #Ophiostoma ulmi as the #fungus responsible of the #DutchElmDisease.
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Johanna Westerdijk - Wikipedia

🎉 Happy International Day of Women and Girls in Science 🔬

Today I would like to celebrate Johanna Westerdijk (1883-1961), a Dutch #forest #pathologist who discovered the cause of #DutchElmDisease in the 1920’s
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#WomenInSTEM
#WomenInScience

en.wikipedia.org/wiki/Johanna...

City considers action after explosion of Dutch elm disease in Saskatoon According to a city report, there were 41 cases of Dutch elm disease (DED) in 2025, 11 cases in 2024, and four in 2023.

#DutchElmDisease
"The city said the disease is now widespread in Saskatoon, and it is looking at moving from a prevention approach to active management.”

Oilpainting by Ronald Oudman, tree before the thunderstorm.

Tree before the thunderstorm. Oil on canvas, 120 x 110 cm. Finished yesterday. Inspired by the #elm #trees in the Dutch province of #Groningen, which have sadly disappeared because of the #dutchelmdisease

#tree #landscape #countryside #oilpainting #painting #art #originalart #figurativeart

A century of data reveals declining forest diversity | College of Agricultural, Consumer & Environmental Sciences | Illinois Researchers at the University of Illinois Urbana-Champaign have analyzed 96 years of forest census data to better understand ecological changes and inform management practices.

A recent study from UIUC shows that #EmeraldAshBorer and #DutchElmDisease have driven declining biodiversity in the sampled woods—and likely beyond—through impacts extending beyond just the loss of these two tree species.

aces.illinois.edu/news/century... #InvasiveSpecies #Entomology 🧪🌍🍁

It is really imperative we look out for our beautiful #elm trees. #DutchElmDisease #KillingDisease #EasyToSpread #Yeg #Edmonton

Hey, #YEG Alberta Avenue Folks,

Dutch Elm Disease has arrived in the neighbourhood. Be on lookout for crispy leaves in the elm canopy, and please report any suspect trees to 311.

cbc.ca/news/canada/...

#yegtrees #dutchelmdisease #ded #yeggarden

Comment les chercheurs ont-ils fait renaître les ormes en France ? Autrefois très répandu en France, l’orme a dramatiquement souffert de la graphiose au début des années 70, jusqu’à disparaître.

Comment les chercheurs ont-ils fait renaître les ormes en France ?
Quelques éléments de réponse de Jean Pinon dans
@lefigaro.fr

#Graphiose
#DutchElmDisease
#ForestPathology
#TreeHealth
#UrbanTrees

www.lefigaro.fr/jardin/comme...

Pourquoi les grands ormes adultes ont-ils disparu en France ? Sur notre territoire, il ne reste plus que quelques beaux spécimens de cet arbre, pourtant caractéristique de nos campagnes. Autrefois, les ormes étaient pourtant nombreux. Que s’est-il passé ?

Pourquoi les grands ormes adultes ont-ils disparu en France ?
Quelques éléments de réponse de Jean Pinon dans @lefigaro.fr

#Graphiose
#DutchElmDisease
#ForestPathology
#TreeHealth
#UrbanTrees

www.lefigaro.fr/jardin/pourq...

This is a great rule! I have been so fortunate to have this, though the tree canopy is going through a big transition in my neighbourhood due to #DutchElmDisease #EmeraldAshBorer #TwoLineOakBeetle It will get worse before it gets better. #Minneapolis