Ponds, urban ecology and a few doubts

In my last post I wrote about the undoubted benefits of even small ponds in gardens and on allotments. We’re lucky here because our allotments are no more than 50 yards away from the river Avon and we have a number of large ponds almost as close; but that doesn’t in the least seem to lessen the impact of the tiny ponds that I photographed yesterday, and all within yards of our allotment.

As you can easily see, these aren’t all the tidy and expensive preformed fibreglass ponds bought from garden centres and neither are any of them apparently lined with expensive thick butyl. For the most part they’re a hole in the ground lined with builders polythene all apart from the one that’s not a pond at all but a horse trough. The one thing they have in common is that they’re all full of water, most of them have a few plants around them and they’re all teeming with life.

Starting with the horse trough that’s the source for much of our our watering, there’s never an occasion, it seems, when you can’t find at the least, a few water boatmen. The others vary in maturity but even the one that was built this spring by a couple of children raised a crop of tadpoles which they generously shared around all the other ponds. The murkier ones have larvae in them, and all are visited by a variety of dragonflies and damselflies which, when they’re not eating smaller insects are becoming snacks for birds. What the ponds are doing of course is drawing these interesting and beautiful invertebrates into places we can see and enjoy them, and as their natural habitat is eroded, ponds become a matter of survival for some species.

As you will know if you’ve been following the Potwell Inn blog recently, I’ve been reading David Goode’s contribution the the New Naturalist library – “Nature in towns and cities”. A brilliant collection of books for anyone interested in natural history in any case, and this one’s particularly caught my attention because it’s on a subject close to my heart.

When we moved to Bath almost five years ago I wasn’t prepared for the richness of the wildlife to be found here. Having lived and worked in what most people would think of as the countryside, I was prepared to be underwhelmed by the natural history of our adopted home. But far from being less diverse, our immediate neighbourhood slowly yielded its secrets. Not just badgers and foxes but otters! Not just buzzards but a peregrine’s nest; and enough unfamiliar plants to keep me perpetually bewildered. On the very first night here we heard a tawny owl; it was strange to say the least. Now we’re almost blasé about bats and we can name the species of gull on the green outside.

And so I’ve been writing enthusiastically about all this wildlife and, if you live near here you really should join the Bath Natural History Society (Bath Nats) because they’re the quickest and easiest way to learn what’s here. If you live anywhere else and don’t fancy moving to Bath, I urge you to investigate and join your local natural history group – it’ll be full of fabulous, knowledgeable and enthusiastic people who just love sharing their interests.

Yesterday after a hot couple of hours on the allotment we wandered along the river to see the peregrines and we got especially lucky because the recently fledged young did a quick flight while we were there. I’ve been to Symonds Yat and not seen a peregrine and yet our son saw one eat its kill on his back doorstep in the middle of Birmingham, and I saw my first less than half a mile from home.

So there’s the good news and here are the doubts. Although it’s a joy to have this diversity outside the door, isn’t it just a bit weird that so many species, being displaced from their normal habitats, are evolving to live here? Isn’t it sad that I’ve learned so much more about plant diversity since we moved to the city? I go on about the rogues and vagabonds but corncockle? vipers bugloss?

The greatest sadness is that when I look for them where the old floras said I’d find them; all too often the habitat is gone. Seabirds can’t find a living in fished out polluted seas and so the canny ones have moved inland to our rubbish tips. Those species that can’t adapt are diminishing rapidly. Invertebrates and plant species that once made the meadows beautiful at this time of the year have been poisoned out of existence. So the take-home point is that however thrilling it is to have the early adapters and early adopters here in the city; they’re in the minority. There’s still every point in cleaning up the rivers and creating inner city wildlife corridors and green spaces. There’s every point in asking gardeners to think about pollinators but it’s not enough.

Grateful for small mercies?

One thought provoking piece in yesterday’s papers made me sit up. There are so many organic and free-range chicken farms setting up on, or near the upper reaches of the river Wye that the accumulating load of excess nitrogen and phosphorous from their droppings is leading to eutrophication of the river – killing it slowly. So even eating organic chicken isn’t going to let us off the hook. It’s intensive farming that’s causing the problems – whatever label you put on it to make it sound like it’s saving the earth.

Even the air we breathe and the water we drink have been taken from us and given to the polluters to destroy for their own profit.

Think about it for a moment. If even two percent of the vertebrates, invertebrates and plant species could be persuaded to live here in green spaces and derelict industrial sites it would only take one inappropriate development to wipe out a species altogether. Much as I treasure urban ecology, it’s never going to be more than a tiny part of the answer.

We need to change the way we live and the way we produce our food, the way we move about, the way we enjoy our leisure time and the way we shop. We cannot let the free market politicians urge us to live within our means when the real means of our lives are being destroyed for profit. They love to talk about the ‘tragedy of the commons’ by which they make the unsupported assertion that land cannot be managed equably without ownership. Even the air we breathe and the water we drink have been taken from us and given to the polluters to destroy for their own profit.

No amount of information boards, nature reserves and feeding stations will make up for the loss of the earth. This is an ethical problem, a religious problem, a problem of vision. The one thing it is not is an economic problem. The economists with their pseudoscientific theories have acted as the heavy artillery of the free market. We see the damage they have done every day and I, for one, am not grateful for very small mercies.