If you are a follower of my blog then you will know that I have a thing about roundabouts; if not then follow this link and read about the wonderful world of the famous Bracknell roundabouts 🙂 Seriously though, I, or more correctly, a bunch of my students with the occasional visit from me, spent twelve years sampling roundabouts for a variety of plant and animal life, ranging from bugs through to birds with beetles in between.
I originally set the project up as a pedagogical exercise to make island biogeography and nature reserve design more relevant to UK-based undergraduates. I have a bit of a thing about students swanning off to warm tropical places to do conservation, when we have plenty of our own nature that needs attention much closer to home.
Having come up with the idea of getting students (initially undergraduates, but soon involving a horde of MSc students and even a PhD student) to test the species-area relationship using roundabouts as islands – green oases surrounded by a sea of tarmac, I had to do something about it, especially as the Borough Council, to my total amazement, agreed that I could do it 🙂
So the project was born and lived on for twelve very productive and enjoyable years. We used pitfall trapping, sweep netting, tree beating, suction sampling, transect sampling for the butterflies and bumblebees and also bird counts. We sampled the vegetation, measured NOx and recorded how often the grass was mown. We also measured how far away the nearest green spaces were and the immediate and not so immediate land-use.
To my initial surprise (although perhaps I shouldn’t have been), it turned out that the roundabouts were full of wildlife and behaved like geographical islands, big ones having more species than smaller ones (species-area) and more individuals of those species (area-abundance theory). We also showed that native plants supported more insects than non-native plants and that this was good for the birds.
Quite a bit of the work is now published although we still have a pile of plant and woodlouse data to write up.
So, how does this relate to our current lockdown status? You can’t very well go out and sample roundabouts or roadside verges, the police will move you along pretty quickly. Most of you however, probably have a garden and know people with gardens. Why not get together (virtually of course) and decide what you want to sample; pitfall traps are probably the easiest thing to start with or you could do a bit of bush and tree beating. Measure your respective islands (gardens) and start collecting and counting. Then collate your data and see what you turn up. Kevin Gaston and Ken Thompson both formerly at Sheffield University found all sorts of exciting things in Sheffield domestic gardens and if you want a good read about the wildlife of suburban gardens I can recommend Jennifer Owens’ little book https://www.amazon.co.uk/Ecology-Garden-First-Fifteen-Years/dp/0521018412
So, find a trowel and get those plastic/paper party cups, jam jars, or tin cans deployed, or get a broom handle and bed sheet and start being cruel to the trees and bushes and enjoy a bit of outdoor time 🙂