I found such a photo on the Internet and became interested in what function such a structure could perform.
this post was submitted on 29 Nov 2023
719 points (94.3% liked)
Ask Lemmy
27268 readers
2734 users here now
A Fediverse community for open-ended, thought provoking questions
Rules: (interactive)
1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either [email protected] or [email protected].
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email [email protected]. For other questions check our partnered communities list, or use the search function.
6) No US Politics.
Please don't post about current US Politics. If you need to do this, try [email protected] or [email protected]
Reminder: The terms of service apply here too.
Partnered Communities:
Logo design credit goes to: tubbadu
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
It's taken into consideration of the design of these crossings.
I'd like to read about that,understand how it's done. it's a thought I have whenever I see them but of course the professionals designing them would have thought about it.
There was a documentary I watch years ago where they went into great detail into this, as well as the design of these things. Can't remember where i saw this documentary though.
Anyways, researchers setup cameras trigger by movement and body heat to watch these overpasses and found no evidence of higher predetor active.
They also went into detail about how these things are design with extra width and gentle slopes to make them as "friendly" as possible depending on the specific species that will be migrating in the area, as different wildlife species prefer different types of crossing structures.
For example:
Grizzly bears and wolves
Wary animals like grizzly bears and wolves there is a "learning curve", it may take up to five years before they feel secure using newly built crossings. Grizzly bears, elk, moose and deer prefer wildlife crossings that are high, wide and short in length, including overpasses
Cougars and black bears
Cougars and black bears prefer long, low and narrow crossings such as underpasses.
Elk
Elk are usually the first large species to use the new crossings, even using some while they are still under construction!
Here are some articles that talk about some of the studies:
https://wildlife.org/wild-cam-do-predators-ambush-at-underpasses/
https://www.nature.com/articles/s41598-020-67340-8
Awesome, thank you.
Yea elk don't give a fuck about much really. We have a few herds where I live and they don't even move when we walk our dogs nearby. I even have a video of one coming right up to the fence around my property, both my great pyrenees were losing their minds with the elk less than a foot away, the elk seemed more curious about the noisy little things ("little" relative to a full grown elk that is) than anything else.
IIRC they just hire someone to sit there and say "shoo" at any potential predators
How can I get this job? I'm almost 40 and I haven't been eaten by a mountain lion yet. 100% success. I'm qualified.
Works for airports.