I found such a photo on the Internet and became interested in what function such a structure could perform.

  • NarrativeBear@lemmy.world
    link
    fedilink
    arrow-up
    394
    ·
    11 months ago

    1000006081

    These are great for wildlife as they provide a safe crossing over high-speed highways. They are usually design to be in already existing migration paths where moving a proposed highway may not work and not disrupting migration paths is of importance.

      • SzethFriendOfNimi@lemmy.world
        link
        fedilink
        arrow-up
        42
        ·
        11 months ago

        Possibly but I’d think it’s still safer than vehicles and less disruptive to overall migration for a given species.

        I wonder if there’s been any studies showing how effective, if at all, these are.

        • NarrativeBear@lemmy.world
          link
          fedilink
          arrow-up
          37
          ·
          11 months ago

          There have been study’s, these crossing are usually design to feel like open fields in a sense, so most animals will cross quick and on high alert to get through the “opening” in the field.

      • FooBarrington@lemmy.world
        link
        fedilink
        arrow-up
        27
        ·
        11 months ago

        Are there any predators smart enough to strategize like this? I know that some use water holes as hunting grounds, but that’s probably more instinctive than actual strategy.

        • gohixo9650@discuss.tchncs.de
          link
          fedilink
          arrow-up
          28
          ·
          11 months ago

          Are there any predators smart enough to strategize like this?

          it is the predators that build such passages. Have you ever seen any construction company building them? Even in the first photo that is under construction, there is not any human worker in sight

          • Flying Squid@lemmy.world
            link
            fedilink
            arrow-up
            5
            arrow-down
            1
            ·
            11 months ago

            That under construction pit is the pit of the manlion. It’s similar to the pit of the antlion, except for construction workers.

            They always have to deal with the manlion before they start building. Often by pouring concrete over it.

        • andrew_bidlaw@sh.itjust.works
          link
          fedilink
          arrow-up
          7
          ·
          11 months ago

          They can track other species by smell at least. If that path is used by too many and smells like a farm, they would probably get used to hang around it naturally.

        • CarbonIceDragon@pawb.social
          link
          fedilink
          arrow-up
          6
          ·
          11 months ago

          Would they need to be that smart? Ambush predators that stay in roughly one area, for example, could naturally grow their numbers in the area around such a chokepoint simply by virtue of the ones in that area having more food available and therefore better survival chances.

          • FooBarrington@lemmy.world
            link
            fedilink
            arrow-up
            5
            arrow-down
            1
            ·
            edit-2
            11 months ago

            I think that these human-made structures provide such a different environment (loud sounds from cars, moving/flashing lights etc.) that previous instinctual adaptations wouldn’t trigger.

        • Metatronz@lemmy.world
          link
          fedilink
          arrow-up
          5
          ·
          11 months ago

          Maybe canines? Idk

          I just think it would be dope to drive under as a dramatic fight between an elk and wolves tumbled off the side onto my vehicle. Killing all of us instantly. What a way to go!

        • credit crazy@lemmy.world
          link
          fedilink
          arrow-up
          4
          ·
          11 months ago

          I know octopi have been escaping their aquarium enclosures and covering their tracks that humans would see. Just to take one at a time pray from their tank. If I recall correctly even killer wailes have been taking down human boats. In conclusion there are for Shure aquatic predators that use genuine strategy. Granted with my killer waile example is a similar case of is it strategy or instinct.

        • Echo Dot@feddit.uk
          link
          fedilink
          arrow-up
          1
          ·
          11 months ago

          I don’t imagine it would be a major problem though maybe it would let them get one or two easy meals but predators don’t hunt unless they’re hungry. So once they’ve taken down one prey animal they’ll ignore the rest. On a species level it’s probably not a major issue.

          As opposed to roads which will kill lots of animals.

      • Honytawk@lemmy.zip
        link
        fedilink
        arrow-up
        1
        ·
        edit-2
        11 months ago

        It is like that playground game, but with less violence since only one player gets hurt at a time.

    • Mango@lemmy.world
      link
      fedilink
      arrow-up
      2
      ·
      11 months ago

      It’s also amazing visually! Forget regular highways! Let’s have buried highways! That’s especially good for if our country is invaded because we can install physical barriers to logistical supply lines against us!

      • LufyCZ@lemmy.dbzer0.com
        link
        fedilink
        English
        arrow-up
        1
        ·
        11 months ago

        Buried highways would be insanely expensive, and in the case of invasion, one well placed shot would completely kill logistics for the defenders as much as it would for the invaders, so probably not the best idea to rely on those