Mark Ditmer
@mditmer.bsky.social
Research ecologist, USFS Rocky Mountain Research Station | studying animal movement, human disturbance, and ecophysiology.
Reposted by Mark Ditmer
We all need a little more levity. So, let's start a Furriendly Friday. I'll be using photos and videos from wildlife studies I have done throughout the years. Here's a #grizzly from one of our #RecreationEcology surveys. #FurriendlyFriday
November 21, 2025 at 4:18 PM
We all need a little more levity. So, let's start a Furriendly Friday. I'll be using photos and videos from wildlife studies I have done throughout the years. Here's a #grizzly from one of our #RecreationEcology surveys. #FurriendlyFriday
Reposted by Mark Ditmer
‘NOT FOR SALE’
It turns out that not many Americans wanted to see our country’s public land sold — with polls showing 75-80% opposed — even 65% of Republicans
Late Monday, that proposal got the axe 🪓
news.bloomberglaw.com/environment-...
It turns out that not many Americans wanted to see our country’s public land sold — with polls showing 75-80% opposed — even 65% of Republicans
Late Monday, that proposal got the axe 🪓
news.bloomberglaw.com/environment-...
Public Land Sales Blocked From Inclusion in Trump’s Tax Bill
A Senate proposal to sell millions of acres of public land to help pay for President Donald Trump’s massive package of tax cuts and spending has been blocked by the Senate’s rule keeper.
news.bloomberglaw.com
June 24, 2025 at 12:28 PM
‘NOT FOR SALE’
It turns out that not many Americans wanted to see our country’s public land sold — with polls showing 75-80% opposed — even 65% of Republicans
Late Monday, that proposal got the axe 🪓
news.bloomberglaw.com/environment-...
It turns out that not many Americans wanted to see our country’s public land sold — with polls showing 75-80% opposed — even 65% of Republicans
Late Monday, that proposal got the axe 🪓
news.bloomberglaw.com/environment-...
Reposted by Mark Ditmer
Vertebrate hotspots are expected to see increased climate extremes in the coming decades; often in places where animals may be most naive to such events. New research out of my lab led by Dr. van den Bosch in @globalchangebio.bsky.social 🧪🌐🌏
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
Projected Increases in Climate Extremes Across Global Vertebrate Diversity Hotspots
We identified overlap between areas of high vertebrate diversity and regions predicted to be exposed to increases in extreme drought, heat, and precipitation. Tropical regions, which host the highest...
onlinelibrary.wiley.com
June 10, 2025 at 6:56 PM
Vertebrate hotspots are expected to see increased climate extremes in the coming decades; often in places where animals may be most naive to such events. New research out of my lab led by Dr. van den Bosch in @globalchangebio.bsky.social 🧪🌐🌏
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Mark Ditmer
Very excited to be a part of this work led by @mditmer.bsky.social and Heather Abernathy
New research demonstrates how anonymised mobile phone location data can transform our understanding of human recreation behavior, human wildlife interactions, & wildlife habitat 📲🧪
It also offers pathways to improve habitat connectivity mapping 📍🌍
🔗 doi.org/10.1111/1365...
It also offers pathways to improve habitat connectivity mapping 📍🌍
🔗 doi.org/10.1111/1365...
June 6, 2025 at 12:08 PM
Very excited to be a part of this work led by @mditmer.bsky.social and Heather Abernathy
Reposted by Mark Ditmer
New research demonstrates how anonymised mobile phone location data can transform our understanding of human recreation behavior, human wildlife interactions, & wildlife habitat 📲🧪
It also offers pathways to improve habitat connectivity mapping 📍🌍
🔗 doi.org/10.1111/1365...
It also offers pathways to improve habitat connectivity mapping 📍🌍
🔗 doi.org/10.1111/1365...
June 2, 2025 at 7:55 AM
New research demonstrates how anonymised mobile phone location data can transform our understanding of human recreation behavior, human wildlife interactions, & wildlife habitat 📲🧪
It also offers pathways to improve habitat connectivity mapping 📍🌍
🔗 doi.org/10.1111/1365...
It also offers pathways to improve habitat connectivity mapping 📍🌍
🔗 doi.org/10.1111/1365...
Reposted by Mark Ditmer
Let's dive into this a bit. A short and very incomplete thread on US Forest Service research. 1/
It’s finally in writing. The detailed President’s budget clearly wants to completely eliminate USFS Research
May 31, 2025 at 9:05 PM
Let's dive into this a bit. A short and very incomplete thread on US Forest Service research. 1/
Reposted by Mark Ditmer
A well-connected Earth: The science and conservation of organismal movement www.science.org/doi/10.1126/...
I never thought I'd see my name in Science and I'm over the moon! Many thanks to Jedediah Brodie @fletcherecology.bsky.social and team. It is an honor to be a part of this!
I never thought I'd see my name in Science and I'm over the moon! Many thanks to Jedediah Brodie @fletcherecology.bsky.social and team. It is an honor to be a part of this!
A well-connected Earth: The science and conservation of organismal movement
Global biodiversity targets focus on landscape and seascape connectivity as a foundational component of biodiversity conservation, including networks of connected protected areas. Recent advances allo...
www.science.org
April 24, 2025 at 11:57 PM
A well-connected Earth: The science and conservation of organismal movement www.science.org/doi/10.1126/...
I never thought I'd see my name in Science and I'm over the moon! Many thanks to Jedediah Brodie @fletcherecology.bsky.social and team. It is an honor to be a part of this!
I never thought I'd see my name in Science and I'm over the moon! Many thanks to Jedediah Brodie @fletcherecology.bsky.social and team. It is an honor to be a part of this!
Reposted by Mark Ditmer
Super excited to share this new pub led by @wilsonsherm.bsky.social! We used Nextdoor posts to explore human-carnivore interactions in Los Angeles. Nextdoor offers a useful data source for understanding urban human-wildlife interactions, if human biases are accounted for. Check it out! 🧪🌎
"The wildlife Nextdoor: Socioeconomics and race predict social media carnivore reports" is out in Science of the Total Environment. @scrappynaturalist.bsky.social, Christopher Schell, and I looked at how people post about coyotes and black bears on Nextdoor.
doi.org/10.1016/j.sc...
doi.org/10.1016/j.sc...
April 14, 2025 at 6:41 PM
Super excited to share this new pub led by @wilsonsherm.bsky.social! We used Nextdoor posts to explore human-carnivore interactions in Los Angeles. Nextdoor offers a useful data source for understanding urban human-wildlife interactions, if human biases are accounted for. Check it out! 🧪🌎
Reposted by Mark Ditmer
We made the cover of TREE!
April 3, 2025 at 1:49 PM
We made the cover of TREE!
Reposted by Mark Ditmer
We are recruiting a postdoctoral ORISE fellow to join an interdisciplinary team focused on issues of ecosystem type conversion, directional biodiversity change, and what to do about it. Please spread the word! 🌎🌐🧪
Details here:
www.zintellect.com/Opportunity/...
Details here:
www.zintellect.com/Opportunity/...
February 7, 2025 at 11:10 PM
We are recruiting a postdoctoral ORISE fellow to join an interdisciplinary team focused on issues of ecosystem type conversion, directional biodiversity change, and what to do about it. Please spread the word! 🌎🌐🧪
Details here:
www.zintellect.com/Opportunity/...
Details here:
www.zintellect.com/Opportunity/...
Reposted by Mark Ditmer
Another video in my series on applied time series and forecasting with the {mvgam} #rstats 📦. This one introduces State Space hierarchical GAMs and GPs for tackling multivariate series youtu.be/2POK_FVwCHk?...
Time series in R and Stan using the mvgam package: hierarchical GAMs
YouTube video by Nicholas Clark
youtu.be
February 4, 2025 at 8:09 AM
Another video in my series on applied time series and forecasting with the {mvgam} #rstats 📦. This one introduces State Space hierarchical GAMs and GPs for tackling multivariate series youtu.be/2POK_FVwCHk?...
Reposted by Mark Ditmer
Grizzly bears & wolves avoid busy hiking trails more than previously thought 🏞️
Explains how, combining camera traps & modelling, researchers found that the strongest disturbance effects take place within 300m for Grizzly Bears & 600m for Grey Wolves 🐺🌎🧪
🔗 appliedecologistsblog.com/2025/01/23/g...
Explains how, combining camera traps & modelling, researchers found that the strongest disturbance effects take place within 300m for Grizzly Bears & 600m for Grey Wolves 🐺🌎🧪
🔗 appliedecologistsblog.com/2025/01/23/g...
January 23, 2025 at 12:04 PM
Grizzly bears & wolves avoid busy hiking trails more than previously thought 🏞️
Explains how, combining camera traps & modelling, researchers found that the strongest disturbance effects take place within 300m for Grizzly Bears & 600m for Grey Wolves 🐺🌎🧪
🔗 appliedecologistsblog.com/2025/01/23/g...
Explains how, combining camera traps & modelling, researchers found that the strongest disturbance effects take place within 300m for Grizzly Bears & 600m for Grey Wolves 🐺🌎🧪
🔗 appliedecologistsblog.com/2025/01/23/g...
Reposted by Mark Ditmer
Integrating human trail use in montane landscapes reveals larger zones of human influence for wary carnivores 🐻
👉Shows how human activity can alter wildlife detection rates 🌏
👉Results identify target buffer distances for protected areas near trails 🧪
🔗
👉Shows how human activity can alter wildlife detection rates 🌏
👉Results identify target buffer distances for protected areas near trails 🧪
🔗
buff.ly
January 20, 2025 at 10:00 AM
Integrating human trail use in montane landscapes reveals larger zones of human influence for wary carnivores 🐻
👉Shows how human activity can alter wildlife detection rates 🌏
👉Results identify target buffer distances for protected areas near trails 🧪
🔗
👉Shows how human activity can alter wildlife detection rates 🌏
👉Results identify target buffer distances for protected areas near trails 🧪
🔗
Reposted by Mark Ditmer
Fuel breaks –strips of land managed for reduced flammability– are designed to aid wildfire suppression and management. 🔥However, fuel break construction may reduce wildlife habitat & introduce invasive species. New study investigating these potential trade-offs: www.usgs.gov/centers/fort... 🌎
January 17, 2025 at 1:44 PM
Fuel breaks –strips of land managed for reduced flammability– are designed to aid wildfire suppression and management. 🔥However, fuel break construction may reduce wildlife habitat & introduce invasive species. New study investigating these potential trade-offs: www.usgs.gov/centers/fort... 🌎
Reposted by Mark Ditmer
A nice summary of this recent research about that other ecological disturbance in the west and its rising impact on wildlife
phys.org/news/2024-12...
phys.org/news/2024-12...
January 11, 2025 at 4:02 AM
A nice summary of this recent research about that other ecological disturbance in the west and its rising impact on wildlife
phys.org/news/2024-12...
phys.org/news/2024-12...
Reposted by Mark Ditmer
Predicting fine-scale distributions and emergent spatiotemporal patterns from temporally dynamic step selection simulations https://nsojournals.onlinelibrary.wiley.com/doi/10.1111/ecog.07421 #Buffalo #Movement #Management
December 23, 2024 at 9:26 AM
Predicting fine-scale distributions and emergent spatiotemporal patterns from temporally dynamic step selection simulations https://nsojournals.onlinelibrary.wiley.com/doi/10.1111/ecog.07421 #Buffalo #Movement #Management
Reposted by Mark Ditmer
Absolutely incredible headline/image pairing from the NYT. No notes.
December 19, 2024 at 5:03 PM
Absolutely incredible headline/image pairing from the NYT. No notes.
Reposted by Mark Ditmer
📣Another paper out📣
This one is a fun collaboration with @emanzo.bsky.social and the Fondazione Ethoikos team. Using #cameratraps, we explored whether European pine marten’s occurrence and activity were associated with the presence of humans and domestic cats on Elba Island. 🏃🚵🐈⬛
This one is a fun collaboration with @emanzo.bsky.social and the Fondazione Ethoikos team. Using #cameratraps, we explored whether European pine marten’s occurrence and activity were associated with the presence of humans and domestic cats on Elba Island. 🏃🚵🐈⬛
December 2, 2024 at 3:57 PM
📣Another paper out📣
This one is a fun collaboration with @emanzo.bsky.social and the Fondazione Ethoikos team. Using #cameratraps, we explored whether European pine marten’s occurrence and activity were associated with the presence of humans and domestic cats on Elba Island. 🏃🚵🐈⬛
This one is a fun collaboration with @emanzo.bsky.social and the Fondazione Ethoikos team. Using #cameratraps, we explored whether European pine marten’s occurrence and activity were associated with the presence of humans and domestic cats on Elba Island. 🏃🚵🐈⬛
Reposted by Mark Ditmer
Our new paper was just published on the survival of feral pigs 🐖in the presence of cougars 🦁. Juvenile mortality was mostly due to predation & road kill, not so for adults.
This is part of Mitch's PhD work with CDFW, NWRC, & DoD. We should have more soon! 🧪
link.springer.com/article/10.1...
This is part of Mitch's PhD work with CDFW, NWRC, & DoD. We should have more soon! 🧪
link.springer.com/article/10.1...
November 27, 2024 at 4:42 PM
Our new paper was just published on the survival of feral pigs 🐖in the presence of cougars 🦁. Juvenile mortality was mostly due to predation & road kill, not so for adults.
This is part of Mitch's PhD work with CDFW, NWRC, & DoD. We should have more soon! 🧪
link.springer.com/article/10.1...
This is part of Mitch's PhD work with CDFW, NWRC, & DoD. We should have more soon! 🧪
link.springer.com/article/10.1...
Reposted by Mark Ditmer
Please share widely! Apply to come join us at South Dakota State University!
November 22, 2024 at 11:02 PM
Please share widely! Apply to come join us at South Dakota State University!
Reposted by Mark Ditmer
Ready to learn how to use LiDAR for research in #forestry and natural resources using #R? This week I am releasing a 7-part series to help you get started! Share with anyone you know who wants to get started. Part 1 covers acquiring, & viewing LiDAR data! bit.ly/lidR-module1
Module 1: Getting started with LiDAR processing for forestry and natural resources - The Jones Center at Ichauway Research Labs
If you are interested in learning to use LiDAR for forestry and natural resources, this tutorial can help you get started. You will learn to view large datasets, create raster products, map trees, and...
bit.ly
November 21, 2024 at 1:57 AM
Ready to learn how to use LiDAR for research in #forestry and natural resources using #R? This week I am releasing a 7-part series to help you get started! Share with anyone you know who wants to get started. Part 1 covers acquiring, & viewing LiDAR data! bit.ly/lidR-module1
Reposted by Mark Ditmer
Interested in quantifying animal diel activity with hierarchical models? Check out this amazing how-to guide from @fa-bio-la.bsky.social , @science-action.bsky.social , and John Fieberg! 🧪
besjournals.onlinelibrary.wiley.com/doi/full/10....
besjournals.onlinelibrary.wiley.com/doi/full/10....
A ‘how‐to’ guide for estimating animal diel activity using hierarchical models
We illustrate how hierarchical models can be used to estimate animal diel activity whilst accounting for variability in activity levels and sampling effort. These models also allow researchers to mor....
besjournals.onlinelibrary.wiley.com
November 19, 2024 at 5:01 PM
Interested in quantifying animal diel activity with hierarchical models? Check out this amazing how-to guide from @fa-bio-la.bsky.social , @science-action.bsky.social , and John Fieberg! 🧪
besjournals.onlinelibrary.wiley.com/doi/full/10....
besjournals.onlinelibrary.wiley.com/doi/full/10....
Reposted by Mark Ditmer
New paper out on climate change, drought and consequences for wildlife! 🌎 🧪
Led by the tenacious Dr. van den Bosch (new to blue sky; give him a follow)
Led by the tenacious Dr. van den Bosch (new to blue sky; give him a follow)
November 16, 2024 at 12:48 AM
New paper out on climate change, drought and consequences for wildlife! 🌎 🧪
Led by the tenacious Dr. van den Bosch (new to blue sky; give him a follow)
Led by the tenacious Dr. van den Bosch (new to blue sky; give him a follow)