Road Verges
artemisiae-campestris on a road verge (G. Toone)

Introduction

A short project to discover how well verges are managed for biodiversity. The aims are to gather data from the period 1950 – 2010 covering the UK as widely as possible, collecting and analysing information particularly but not solely regarding ‘protected’ verges; their past and current status, management problems and solutions and the turnover of sites over the years. From the information gathered it is hoped that conclusions can be reached about the performance of past and present management methods and the possible future of road verge management for the conservation of biodiversity.

A diversity of verges

Amongst our native plants of endangered habitats perhaps the most precarious existence is measured out by those that have retreated to roadsides, like Tower Mustard (Arabis glabra) and Meadow Clary (Salvia pratensis). The fate of Sickle-leaved Hare’s-ear (Bupleurum falcatum) is a well known example of the vagaries that can wipe out a rarity when it survives only by roadsides in an industrially farmed landscape. Responsibility for the management of this wide-ranging and very varied set of habitats lies with county and other councils all over the country.

Roadside verges throughout Britain cover an enormous area, constituting many thousands of hectares of habitats which are corridors for wildlife. They are often the only remaining fragments of those habitats which once characterised an entire landscape now turned to highly efficient agricultural production. If biodiversity in the wider countryside is to be allowed any chance of survival it is from these linear reserves that recolonisation will come. Linear species-rich chalk downland in Wiltshire, hay meadows in Suffolk, ditches in Dorset, rock cuttings in Radnor; all are managed by public authorities with, in most counties, the work being subcontracted to landscaping and garden maintenance concerns.

Down the line

With the gradual loss, since the 2nd World War, of the 'linesmen' who had responsibility for the state of hedgerows, ditches and verges of an area and were the last exponents of many traditional skills, our road verges have become gradually poorer in the variety of plants they support. Weeds tolerant of high levels of nutrients in the soil have flourished, encouraged not just by vehicle emissions but by the type of verge maintenance which superseded the traditional 'linesman'. Cutting by mowing and latterly with flails, when cut vegetation was allowed to lie uncleared, made ground suitable for the Nettles, Docks and Ragwort which are now the dominant large herbs of many previously varied and well-managed verges. Ironically, to remove such vigorous plants a more frequent cut would have been needed, making things worse. At the other extreme, some ‘protected verges’ were not cut at all and scrubbed over rapidly. Such situations were often further compounded through lack of understanding by local authorities and naturalists alike of the factors involved. Except for the widespread adoption of 'outsourcing' for labour and machines and the general cessation of spraying outside urban areas this basic system of road verge management seems to have continued largely unchanged over much of the country for at least fifty years.

Verge symposium

In 1969 a symposium hosted by ITE Monkswood was held to discuss the problem and provide advice to local authorities. Both the historic resonances and current uses of road verges were considered and a strategy was formulated aimed at the conservation of particularly rich verges. County and District Surveyors were advised to cooperate with the recently established local Wildlife Trusts in the compilation of lists of suitable verges for special treatment as 'protected verges'. Over the next several years this was attempted with varying degrees of success around the country.

Way’s County lists

A report compiled by Dr J.M. Way of this Society published in 1974 lists, by county, all protected verges arranged upto May 1974 by cooperation between local centres of natural history expertise and highways authorities. The list of counties covers England, Wales and southern Scotland with most having only a few sites but with six figure grid references and those species for which they were thought notable indicated.

There is an opportunity, in each county for which there is data, to check these sites from 45 years ago and find out how they have fared over the years. No doubt many will have lost their defined interest, others may still persist, but in most cases it will be possible to deduce reasons for their present state. Histories may be available documenting triumphs and disasters, from local sources like natural history societies, wildlife trusts and the memories of our members, and these would further inform us about common experiences of verge management around the country at county level.

 

Projects

>> Site Floras

<< Rare Plants

Gathering information

We hope to :-

>> Discover the condition of Way's sites now.

>> Survey and analyse the quality of currently listed 'protected sites'.

>> Analyse the turnover of sites 1974 – 2010.

>> Receive comments from different areas.

>> Collect any case histories illustrating problems or solutions in management.


Way’s Reports

>> Introduction (pdf 1.5Mb)

 

 

Contact: Geoff Toone.