Justin Morgenroth
@jamorgenroth.bsky.social
Professor. Urban tree and greenspace enthusiast. I want to ride my bicycle. I measure trees with lasers and satellites 🇨🇦 🇳🇿
📍Christchurch | Ōtautahi, New Zealand | Aotearoa
orcid: 0000-0002-2747-7349
📍Christchurch | Ōtautahi, New Zealand | Aotearoa
orcid: 0000-0002-2747-7349
The kids climb was popular with my little ones.
October 18, 2025 at 5:03 AM
The kids climb was popular with my little ones.
Is it silly to think that New Zealand's science funding changes may yield too much influence to one person?
newsroom.co.nz/2025/10/16/f...
newsroom.co.nz/2025/10/16/f...
October 17, 2025 at 8:12 AM
Is it silly to think that New Zealand's science funding changes may yield too much influence to one person?
newsroom.co.nz/2025/10/16/f...
newsroom.co.nz/2025/10/16/f...
Today #ucnz is hosting careers advisors from across the country and my research group is telling them all about how we use remote sensing to measure and monitor forests. We use drones equipped with laser scanners, multispectral sensors, and thermal sensors to understand forest dynamics.
September 4, 2025 at 2:30 AM
Today #ucnz is hosting careers advisors from across the country and my research group is telling them all about how we use remote sensing to measure and monitor forests. We use drones equipped with laser scanners, multispectral sensors, and thermal sensors to understand forest dynamics.
Prof. Coops organises quickfire and long form research talks, tech tips, coding sessions, mental health workshops, career retrospective panels, a quiz night, and a movie night for his graduate students and guests. All that plus ample time in the lake, good food and drinks, and lots of laughter.
August 26, 2025 at 8:14 PM
Prof. Coops organises quickfire and long form research talks, tech tips, coding sessions, mental health workshops, career retrospective panels, a quiz night, and a movie night for his graduate students and guests. All that plus ample time in the lake, good food and drinks, and lots of laughter.
One of the best parts of my job...getting to congratulate my PhD students on submitting their thesis after years of hard work. Congrats to Joe Zhao (not on bsky) on his amazing work using deep learning for tree crown delineation and species detection in cities.
August 19, 2025 at 5:00 AM
One of the best parts of my job...getting to congratulate my PhD students on submitting their thesis after years of hard work. Congrats to Joe Zhao (not on bsky) on his amazing work using deep learning for tree crown delineation and species detection in cities.
As promised, here's the first trees and cities manuscript. authors.elsevier.com/sd/article/S.... Here's what we learned:
1. Residential intensification contributes to loss of tree canopy.
2. Residential infill leads to less tree cover loss than other forms of intensification.
3. But...
1. Residential intensification contributes to loss of tree canopy.
2. Residential infill leads to less tree cover loss than other forms of intensification.
3. But...
July 26, 2025 at 10:48 PM
As promised, here's the first trees and cities manuscript. authors.elsevier.com/sd/article/S.... Here's what we learned:
1. Residential intensification contributes to loss of tree canopy.
2. Residential infill leads to less tree cover loss than other forms of intensification.
3. But...
1. Residential intensification contributes to loss of tree canopy.
2. Residential infill leads to less tree cover loss than other forms of intensification.
3. But...
Two manuscripts accepted for publication today. Surprised? You bet. Hope you people like science about trees and cities.
July 25, 2025 at 3:11 AM
Two manuscripts accepted for publication today. Surprised? You bet. Hope you people like science about trees and cities.
My absolute favourite contestant...Mike Wozniak. "You’ve got no chutzpah! Your organizational skills are lacklustre, your timekeeping is abysmal!"
June 8, 2025 at 4:31 AM
My absolute favourite contestant...Mike Wozniak. "You’ve got no chutzpah! Your organizational skills are lacklustre, your timekeeping is abysmal!"
Out with my forestry science students, learning about foraging from the incomparable Peter Langlands. Lots of edible and poisonous mushrooms in Hanmer with the recent rains.
April 8, 2025 at 3:02 AM
Out with my forestry science students, learning about foraging from the incomparable Peter Langlands. Lots of edible and poisonous mushrooms in Hanmer with the recent rains.
I think that's one of those tree protection myths unfortunately. There's very little tree protection regulation in NZ, so we're looking at incentives. Here's a great outcome for a big oak on a Growcott Freer development in ChCh. Hope your pūriri provides future residents with lots of benefits!
March 31, 2025 at 7:28 AM
I think that's one of those tree protection myths unfortunately. There's very little tree protection regulation in NZ, so we're looking at incentives. Here's a great outcome for a big oak on a Growcott Freer development in ChCh. Hope your pūriri provides future residents with lots of benefits!
✅ More housing
❎ Landscaping
I wonder if the consented plans showed some nice leafy green trees and, if so, what happened to them?
❎ Landscaping
I wonder if the consented plans showed some nice leafy green trees and, if so, what happened to them?
February 17, 2025 at 12:17 AM
✅ More housing
❎ Landscaping
I wonder if the consented plans showed some nice leafy green trees and, if so, what happened to them?
❎ Landscaping
I wonder if the consented plans showed some nice leafy green trees and, if so, what happened to them?
And here's the next 4.
February 11, 2025 at 3:57 AM
And here's the next 4.
Urban trees have got it tough. Here's a row of 8 tulip trees (tulip poplar in eastern North America) planted on the same day on a low-use path. 3 are doing well, 3 are dead or gone, 1 is just barely hanging on, and 1 was snapped in half, but recovering well. From West to East, here's the first 4...
February 11, 2025 at 3:57 AM
Urban trees have got it tough. Here's a row of 8 tulip trees (tulip poplar in eastern North America) planted on the same day on a low-use path. 3 are doing well, 3 are dead or gone, 1 is just barely hanging on, and 1 was snapped in half, but recovering well. From West to East, here's the first 4...
Love Ben's enthusiasm for urban trees...they really do make an incredible difference to thermal comfort in our cities. Some cool research has recently come out of Belgium showing that tree type/configuration affects temperatures differently during days and nights. doi.org/10.1016/j.la...
January 13, 2025 at 10:27 PM
Love Ben's enthusiasm for urban trees...they really do make an incredible difference to thermal comfort in our cities. Some cool research has recently come out of Belgium showing that tree type/configuration affects temperatures differently during days and nights. doi.org/10.1016/j.la...
I don't hate it...
January 7, 2025 at 6:02 AM
I don't hate it...
Mine's windier...
January 6, 2025 at 5:35 AM
Mine's windier...
A good colleague of mine is retiring soon and is slowly emptying out his office. I managed to grab this great old book for my collection.
January 6, 2025 at 1:16 AM
A good colleague of mine is retiring soon and is slowly emptying out his office. I managed to grab this great old book for my collection.
With places like this on our doorsteps, it's easy to see why greenspaces reduce depressive symptoms in adults in New Zealand. This study, using 40 years of health data, does a deep dive into the relationship between urban greenspaces and mental health doi.org/10.1016/j.en...
January 5, 2025 at 9:24 PM
With places like this on our doorsteps, it's easy to see why greenspaces reduce depressive symptoms in adults in New Zealand. This study, using 40 years of health data, does a deep dive into the relationship between urban greenspaces and mental health doi.org/10.1016/j.en...
December 11, 2024 at 2:28 AM
First meeting of the day at the botanic gardens #academiclife
December 10, 2024 at 9:30 PM
First meeting of the day at the botanic gardens #academiclife
Incredible day for bees and people alike in Christchurch, NZ.
December 9, 2024 at 11:41 PM
Incredible day for bees and people alike in Christchurch, NZ.
Bees are loving the NZ Christmas tree (Metrosideros spp.)
December 9, 2024 at 11:39 PM
Bees are loving the NZ Christmas tree (Metrosideros spp.)
Great talk by Zoe Avery, focusing on soil to improve biodiversity and urban forest outcomes in our cities.
November 26, 2024 at 5:52 AM
Great talk by Zoe Avery, focusing on soil to improve biodiversity and urban forest outcomes in our cities.
Checking out tonight's Christchurch Conversations by Te Pūtahi
November 26, 2024 at 5:12 AM
Checking out tonight's Christchurch Conversations by Te Pūtahi