Japanese Railways Are Building Special Crossings For Turtles
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Japanese Railways Are Building Special Crossings For Turtles
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Re: Japanese Railways Are Building Special Crossings For Turtles
Well, makes sense?
Germany has those for frogs, on roads. And recently they've started building wildlife bridges on motorways:
I sometimes wonder how well those work, but the idea seems good enough ^^;
Oh, and of course those fish stair things ...
I'm even more skeptical on how well those work, but ... they're pretty common.
Germany has those for frogs, on roads. And recently they've started building wildlife bridges on motorways:
I sometimes wonder how well those work, but the idea seems good enough ^^;
Oh, and of course those fish stair things ...
I'm even more skeptical on how well those work, but ... they're pretty common.
Re: Japanese Railways Are Building Special Crossings For Turtles
The wildlife bridge looks very cool. Of course, the question is whether the wildlife knows to use the bridge!
Re: Japanese Railways Are Building Special Crossings For Turtles
Sadly I think we as humans rely on the concept of natural selection...! After seeing a few deer keep using the road, the other deer will learn that the nice grassy route will get them to the same place!
The fish staircase is very clever - the idea being that fish can climb the "hill" in (lo and behold...!) steps. A more basic version of this of course is the salmon run which carves out a bit of a waterfall to give them an easier path up!
EDIT: Pretty sure in Britain we are obliged to build options for wildlife where we're building roads in protected habitats. We have to provide little tunnels under roads!
The fish staircase is very clever - the idea being that fish can climb the "hill" in (lo and behold...!) steps. A more basic version of this of course is the salmon run which carves out a bit of a waterfall to give them an easier path up!
EDIT: Pretty sure in Britain we are obliged to build options for wildlife where we're building roads in protected habitats. We have to provide little tunnels under roads!
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Re: Japanese Railways Are Building Special Crossings For Turtles
There are numerous examples of 'fish ladders' (probably a more technical term somewhere) in quite a few places in the UK. I find they're a nice idea, but like some others, I do wondor if the wildlife in question actually understand what is going on and what they're for.
I've personally not seen any wildlife crossings (other than the fish ladders) in Yorkshire where I am. Plenty of motorways that span through countryside, but not seen any crossings for the lovely little animals.
At the bottom of where I used to live was a river (the River Holme), and running along was a road, frogs used to cross in large numbers during spring. It was a frankly horrific real-life game of frogger. I do wonder how many little frogs need to be squashed before one of them sees them and go "Hmm, i'll stick to this side of the road!", and informs everyone to quit the game and stay where they are.
I've personally not seen any wildlife crossings (other than the fish ladders) in Yorkshire where I am. Plenty of motorways that span through countryside, but not seen any crossings for the lovely little animals.
At the bottom of where I used to live was a river (the River Holme), and running along was a road, frogs used to cross in large numbers during spring. It was a frankly horrific real-life game of frogger. I do wonder how many little frogs need to be squashed before one of them sees them and go "Hmm, i'll stick to this side of the road!", and informs everyone to quit the game and stay where they are.
Re: Japanese Railways Are Building Special Crossings For Turtles
They must work pretty well - apparently invented during the 17th century.
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Re: Japanese Railways Are Building Special Crossings For Turtles
Eeeeek!Redirect Left wrote:At the bottom of where I used to live was a river (the River Holme), and running along was a road, frogs used to cross in large numbers during spring. It was a frankly horrific real-life game of frogger. I do wonder how many little frogs need to be squashed before one of them sees them and go "Hmm, i'll stick to this side of the road!", and informs everyone to quit the game and stay where they are.
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Re: Japanese Railways Are Building Special Crossings For Turtles
Yeah, we have that in a few places here, too. Sometimes there are volunteers with buckets who pick them up and carry them to the other side, or sort of mini-fences and frog-tunnels. But obviously not everywhere, and you aren't allowed to evade small animals*, so... ^^;
*well, you are allowed to, of course, but if something happens because you abruptly break or go into another traffic lane or something it's your fault. Frosh lives don't count for much in court, apparently
As for wildlife crossings - I think they are a relatively new invention and they aren't a regular thing in Germany either. I'm relatively positive that they work to some extend, as they come with large fenced-off areas - so basically the wildlife in question has no choice, if it wants to migrate But on, say, the most common Autobahn route I take - about 200km relatively straight east-west - there's I think precisely 1 of those. And then some tunnels and bridges where perhaps some wildlife can cross coincidentally, if they live in those "mountains". But then nothing for the next 160km or so ... must be a huge detour for some random deers who just wanted to cross a street
*well, you are allowed to, of course, but if something happens because you abruptly break or go into another traffic lane or something it's your fault. Frosh lives don't count for much in court, apparently
As for wildlife crossings - I think they are a relatively new invention and they aren't a regular thing in Germany either. I'm relatively positive that they work to some extend, as they come with large fenced-off areas - so basically the wildlife in question has no choice, if it wants to migrate But on, say, the most common Autobahn route I take - about 200km relatively straight east-west - there's I think precisely 1 of those. And then some tunnels and bridges where perhaps some wildlife can cross coincidentally, if they live in those "mountains". But then nothing for the next 160km or so ... must be a huge detour for some random deers who just wanted to cross a street
Re: Japanese Railways Are Building Special Crossings For Turtles
For those being skeptical about animals comprehending and utilising man-made structures, I'd like to share this from the Internet:
Also a collection from Google
I have confidence that wild animals adapt even better.
Also a collection from Google
I have confidence that wild animals adapt even better.
Re: Japanese Railways Are Building Special Crossings For Turtles
They definitely do - just a matter of adjustment. Once they realise the man made structure is easier than the natural option, they'll use it.
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Re: Japanese Railways Are Building Special Crossings For Turtles
It's not like animals generally have the capability to distinguish between what's man-made and what's natural, anyway. Water is water to a fish. It's not the fact that those stairs are artificial that makes me skeptical, it's the way they are build; including their incredible narrowness. It seems to me that fish almost need some kind of foresight (or a lot of luck...) to go precisely that way, and that's what makes me skeptical. ^^
But I'm sure they did video-observations and counted fish and whatnot and so they should know that those things work (or not). Still, I guess I'm not the most trusting person
But I'm sure they did video-observations and counted fish and whatnot and so they should know that those things work (or not). Still, I guess I'm not the most trusting person
Re: Japanese Railways Are Building Special Crossings For Turtles
Well, like kamnet said, they've been used in France since the 17th century. The idea was patented in 1837... So someone must see the value in it!
At the very least, the ladder types breaks up the height a fish has to jump, increasing the number of fish that will make it upstream, increasing the number of fish that can be caught.
As with evolution, natural selection and animal behaviour in general, it probably is a lot down to luck! And probably does take time to "bed in"
On a base level...
1 fish might use it first time, go upstream, get fat and return home.
Next year a couple of other fish note this fish has done alright and try and follow it...
And so on.
I'm not an expert in fish ladder building, but I imagine the method is to make it as realistic as possible.
At the very least, the ladder types breaks up the height a fish has to jump, increasing the number of fish that will make it upstream, increasing the number of fish that can be caught.
As with evolution, natural selection and animal behaviour in general, it probably is a lot down to luck! And probably does take time to "bed in"
On a base level...
1 fish might use it first time, go upstream, get fat and return home.
Next year a couple of other fish note this fish has done alright and try and follow it...
And so on.
I'm not an expert in fish ladder building, but I imagine the method is to make it as realistic as possible.
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