The beaver is a creature few people dislike. Many think they’re cute. They’re clever – making their dams and their lodges with such craftbeavership, that anyone who’s played with sand on the beach is impressed.
I’ve been trying to spot beavers for almost thirty years, since I spent a summer in Colorado and had a pond up the road. I visited it, and later others in Massachusetts and New Hampshire while I lived there for 7 years.
Always, I was disappointed to find the builders hidden from view in their lodges.
The ponds, though, like this one, were always full of other life: birds and dragonflies, fish and pond skaters. And I saw a whole lot of muskrats, which are pretty cool in their own right, I have to say.
In Pamplona I’ve seen their signs in the River Arga. But despite photos in the paper of brazen beavers crossing bridges, I’d never seen a ripple I could deem a rodent from the banks and bridges I lingered on.
But this summer I found that a pair of beavers have set up home on a very small (usually…) river very close to our village, and right beside the road, to boot, making it possible to spot them without hardly a trek, and since they’re used to the road noise, they don’t spook too easily.
I’d spotted the pond, but just assumed it was a deep gouge created by the huge floods a few years ago (we’d been swimming ourselves in these during the summer of Covid restrictions..) and this year of drought and very little flow, had been kept from drying by someone with time on their hands making a dam…
When I’d realised what the pond actually was, I was back next morning, but saw no beavers – though I did see their lodge entrance – built into the bank rather than in the middle of the pond, like I’d seen in North America.
I’d been told that European beavers don’t make dams, but that’s clearly not true. Perhaps those seen so far in Spain had not because they’ve been on large rivers – there’s no need for a dam on the Arga, I can tell you, though the beavers have been actively felling fairly large trees there (several older trees along the river park are now protected by chickenwire to dissuade them from taking away the perambulator’s shade!).
Which brings me to the title of this post – Beaver Spread.
Beavers are spreading.
These two are descendants of eighteen animals that were illegally released in the Ebro near the Aragon tributary, back in 2003. They’ve been moving up the rivers since then. With mostly no reaction, as most folk don’t notice them – until they started eating large trees in the middle of Pamplona (though that didn’t make anyone call for their removal, as far as I know.) There were some complaints, and, in fact, some animals were removed by the local governments, though, strictly speaking that was illegal, as once reestablished, they should be considered a protected species under EU law.
Anyway, they’ve spread now to smaller rivers, where their positive effects should be a lot clearer. At least to me in this particular brook, it’s plain as day.
This river drains a long valley which is usually very dry in summer, but gets a fair few heavy storms (our house was flooded just from rainfall in the field above us), one of which gouged out that bank in the first photo. Above this pond a bridge was washed out because it got clogged with trees and stones during the flood, and below it, the local town was devastated with huge economic losses when the river flooded houses and businesses within minutes of the storm.
At the time of the flood there were calls for better drainage – in the way of cutting the poplars and other trees along the bank – to let the water flow without slowing down at all. This came from farmers, and I have to say it’s either in ignorance or apathy of the effects it would have had on the town if that bridge and the trees and culverts had not led the water to spread out across their fields and slow its pace…. it would have washed away houses rather than just fill them with mud, and cars would have gone down like corks in the flow – and a lot more people would have died than did, without time to get out of harm’s way.
We all know that it’s cheaper to compensate a farmer for loss of a crop than a whole town for all their broken windows and destroyed merchandise etc…
But here, despite what I see as large erosion problem, they still dig drains into the fields so they can get the heavy machinery in after the rains they often (more often nowadays of course) wait (and possibly pray) for.
Which brings us to the drought.
We had a forest fire upstream of this pond this spring, and there are worries that the next storm (still waiting on rain) might wash down huge amounts of ashes and soil that’s no longer held in place by vegetation.
But meanwhile the river is down to a trickle. And it’s ponds like this one that are keeping the river alive. While I sat there waiting on the beavers to emerge I was entertained by a plethora of dragonflies, pond skaters, ducks, a heron, and even a nightjar that came down to drink before setting off to hunt. I can’t see, but I assume there are some fish in the murky water, too. And crayfish – European ones – are in that river, as well as European mink.
There is nothing but benefit to beavers – they keep the river alive in drought and they stop the river washing away everything in flood.
What’s not to like?
In Britain they have been reintroduced in a few places, with positive reaction in general. They’ve sorted out flooding in the places they’ve made home, and you’ve probably already heard of these cases.
In Ireland, there are some calls to introduce the beaver to have these same positive effects there. I support this, even if the beaver was never actually officially a native species. Most of Ireland’s fauna was not native. At least this one does some good. We have feral goats allowed to graze the vegetation to nothing in many places simply because it was there for a few hundred years, for goodness sake.
The only problem I see is the same a for so many other species we’d like to see (back) on our island – there’s not enough trees. We need to let scrub grow instead of burn, and get forest cover back in the simplest way possible, and then we have habitat for trees, and then the ugly as feck drainage and flood schemes that beset our lovely towns and villages would not be half as necessary.
Meanwhile, this pair of beavers, and I hope their offspring, are one of those little glories we can enjoy while they last.
Posted on August 26, 2022, in Ecology, nature, rewilding, Uncategorized and tagged Aragon, Arga, ashes, beaver pond, beavers, Britain, brooks, dragonfliy, ducks, Ebro, erosion, extinction, fish, floods, heron, introduction, Ireland, native species, nature, nightjar, pond, reintroduction, rewilding, rivers, soil erosion, Spain, storms, streams, wildfires, wildlife. Bookmark the permalink. 2 Comments.