[stinos]

an individual beaver has far more environmental impact than an individual human

I wouldn't be so sure of that, if you look at the total impact over an average human's lifespan so including what it takes for food, all the stuff people buy, cars, travel, ... (and not just the land occupied for a house which I think is what you mean)

But my point is, a beaver colony turns a river into a marsh, kills grassland, endless trees both due to flooding and feeding, prevents water from flowing downstream, stops fish from spawning, utterly changing the landscape.

This makes it sound as if this is somehow unnatural, and you're doing that by only highlighting what you consider as the negatives. It's not like these marches are dead, on the contrary. They are just a different type of ecosystem and it's not because it doesn't have trees or grassland (and I'm saying that as a huge grassland lover because in my area there's really not a lot of original grasslands left and most of its inhabitatnts are in serious decline) that it doesn't have its own, rich biodiversity of plants and insects and birds etc which thrive (or even can only survive) in such landscape. Beavers have existed for longer than the current form of humans and have their spot on earth, as do goats in their natural surrounding (not the same as a mass herd held for human food!), even though they might be perceived as doing damage on some scale.

but I think we all need a bigger view sometimes

Exactly, and then you see that beavers have always been there and just because humanity grew they started to be 'in the way' of humans and are getting a bad reputation. Whereas the bigger view would be that beavers just do as they do, but then humans start complaining because the result isn't useful or inhabitable. Which is understandable, but doesn't mean the rhetoric of 'beavers are bad, mkay' is super logical.

[dillydogg]

I think your argument is even stronger when you consider that a lot of life evolved to specifically thrive in the ecosystems that beavers create. So it's hard for me to argue to limit the beavers from doing just about anything they want.

[b112]

This makes it sound as if this is somehow unnatural,

No, merely that other species are capable of devastation as well.

The time of biblical reasoning is over, we tend to view the world through that historical optic. We are not separate from nature, as the bible states, we are part of nature, everything we do is natural, as well.

I find it amusing, that some of your arguments are directly counter to environmentalists arguments against hydro electric. Before "green concrete" was discussed, these arguments revolved around damaged ecosystems, blocking fish spawning, and turning forest into lake, and marsh.

All things that beavers do.

This was supposedly bad, because some species would be replaced by others, but apparently it's good, if beavers do so? Some beaver colonies change the environment so much, their impact can be seen from space.

Note that at no point did I say beavers are bad, but here's an example. Where I live, in rural Quebec, there is a mountain range. It hosts 100s of species found no where else.

Some of those species are at risk, as they occupy a small area, from beaver activity.

Beavers are not bad or good, but they are destructive by their very nature. And that means, the result may be bad.

[sumtechguy]

you are not wrong. they can be very destructive. it is why most places keep an eye on them but mostly try to leave them alone. if they get near something like a road and flood it out they get captured and moved.

there are other parts of the US where they are basically extinct. we have literally decimated the beaver population in the US and Canada and are just starting to understand what that means. so some of those places are moving them back in to good effect. those areas have turned into basically deserts. there are no roads are farming near them because the beavers are no longer replenishing the aquifers and those guys left long ago. the fish are long gone because the rivers run dry every year now. once they put them back the fish return the banks start to grow with new growth and the rivers do not run dry every year. the best things that beavers do is what is called water linger. letting the water soak in and help the surrounding area.

in other areas like where you are from they are considered a nuisance because you have enough of them to fill the area up which is your point.

the downside to these sorts of conversations is everyone wants to do 'that one ting' but to properly fix these sorts of things is not planting some trees or dropping a beaver in. you have to have an ecosystem around them that supports that sort of thing. all the way up from the rocks, dirt, microbes, moss, bugs, small animals (birds and rodents), grasses, trees, and larger animals like beavers or foxes or bears. pluck one of those things out and the whole system hurts as there becomes an imbalance and stuff will die out or like you point out overrun the rest of the area. if your area is overrun with something there is probably some sort of imbalance.