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Home Science & Environment Medical Research

Researchers develop tree map to curb allergies in four of Australia’s major cities

May 14, 2025
in Medical Research
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Researchers from Edith Cowan University (ECU) have developed a tool to visualize allergenic trees in four of Australia’s major cities, which could help alleviate the symptoms of people living with pollen allergies or hay fever.

“Green spaces in urban areas are tremendously important for people’s mental health as well as their physical well-being. But for some people, it can be a bit of a detrimental experience going into these spaces, especially if they are exposed to high levels of pollen,” Dr. Mary Hanson said.

Around one in every four Australians have hay fever, including most of the 2.8 million Australians living with asthma.

Dr. Hanson noted that allergic respiratory disease is more common in urban populations, partly because key aeroallergens are more abundant in these environments. In sensitized individuals, exposure to pollen can produce a spectrum of respiratory symptoms which, in rare cases, can result in severe asthma, as observed during “thunderstorm asthma.”

Most cases range from mild to moderate hay fever or asthma, which are associated with substantial direct and indirect costs through health care, workplace absenteeism and medication.

While grass pollen is the largest allergen, tree pollen is also a factor being considered by experts.

“Our research makes use of an existing program which is free to download, layered with a new visualization of potential tree allergenicity. We incorporated tree maps that are currently available from the city councils in Perth, Melbourne, Sydney and Adelaide to identify hotspot areas with higher levels of allergen pollen,” Dr. Hanson said.

“If people are able to avoid those hotspots by making minor adjustments to their lifestyle, like taking a different route home, it could improve their quality of life.”

Researchers at ECU are currently creating an online project portal that will soon be available for people to visualize potential tree allergenicity in the Perth city area. Additionally, the Perth Pollen website and app provide a great resource for pollen and airborne allergen information, including the grass pollen forecast for Perth.

Future research is planned to map pollen risk in Perth more broadly using machine learning and artificial intelligence, building on the limited work that has been done in this space to date and improving the accessibility of pollen data for the WA community.

More information:
D. Krwanji et al, Interactive mapping of allergenic urban street trees in Australia, Urban Forestry & Urban Greening (2025). DOI: 10.1016/j.ufug.2025.128718

Provided by
Edith Cowan University


Access the Perth Pollen website and app.

Citation:
Researchers develop tree map to curb allergies in four of Australia’s major cities (2025, May 14)
retrieved 14 May 2025
from https://medicalxpress.com/news/2025-05-tree-curb-allergies-australia-major.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.



city park
Credit: CC0 Public Domain

Researchers from Edith Cowan University (ECU) have developed a tool to visualize allergenic trees in four of Australia’s major cities, which could help alleviate the symptoms of people living with pollen allergies or hay fever.

“Green spaces in urban areas are tremendously important for people’s mental health as well as their physical well-being. But for some people, it can be a bit of a detrimental experience going into these spaces, especially if they are exposed to high levels of pollen,” Dr. Mary Hanson said.

Around one in every four Australians have hay fever, including most of the 2.8 million Australians living with asthma.

Dr. Hanson noted that allergic respiratory disease is more common in urban populations, partly because key aeroallergens are more abundant in these environments. In sensitized individuals, exposure to pollen can produce a spectrum of respiratory symptoms which, in rare cases, can result in severe asthma, as observed during “thunderstorm asthma.”

Most cases range from mild to moderate hay fever or asthma, which are associated with substantial direct and indirect costs through health care, workplace absenteeism and medication.

While grass pollen is the largest allergen, tree pollen is also a factor being considered by experts.

“Our research makes use of an existing program which is free to download, layered with a new visualization of potential tree allergenicity. We incorporated tree maps that are currently available from the city councils in Perth, Melbourne, Sydney and Adelaide to identify hotspot areas with higher levels of allergen pollen,” Dr. Hanson said.

“If people are able to avoid those hotspots by making minor adjustments to their lifestyle, like taking a different route home, it could improve their quality of life.”

Researchers at ECU are currently creating an online project portal that will soon be available for people to visualize potential tree allergenicity in the Perth city area. Additionally, the Perth Pollen website and app provide a great resource for pollen and airborne allergen information, including the grass pollen forecast for Perth.

Future research is planned to map pollen risk in Perth more broadly using machine learning and artificial intelligence, building on the limited work that has been done in this space to date and improving the accessibility of pollen data for the WA community.

More information:
D. Krwanji et al, Interactive mapping of allergenic urban street trees in Australia, Urban Forestry & Urban Greening (2025). DOI: 10.1016/j.ufug.2025.128718

Provided by
Edith Cowan University


Access the Perth Pollen website and app.

Citation:
Researchers develop tree map to curb allergies in four of Australia’s major cities (2025, May 14)
retrieved 14 May 2025
from https://medicalxpress.com/news/2025-05-tree-curb-allergies-australia-major.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.


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