Hedgerows – Small But Mighty
Hedgerows – Small But Mighty
Described by the Woodland Trust as ‘small but mighty’ these are ‘the most widespread semi-natural habitats in Britain’. We mean, of course, hedgerows. Taken for granted by most people they bring a huge number of benefits as have been described by the Peoples Trust for Endangered Species. Soil erosion is reduced as a hedge lessens wind speeds which can blow topsoil off a field and this helps to minimise the pesticides which can accompany the soil into our watercourses. Pollution is also reduced from herbicides which can be washed off fields in the same way. The severity of flooding can be minimised as hedge plant roots improve the ability of water to penetrate the soil but the roots also themselves suck up some moisture. Biological pest control comes from all the spiders, beetles and birds for whom hedges provide shelter. Climate control benefits from the ability of a hedge to absorb carbon and a well-managed hedge can provide some wood fuel. The benefits of a hedge extend to 16 times its height so a 2-metre hedge spreads its help to some 32 metres over the adjacent land. The warmer soil brings benefits to livestock as lamb mortality from hypothermia is reduced and during hot spells cattle are kept a little cooler. Crops are also helped with warmer soil and the host of insects which pollinate the crops. Many species of wildlife, including Dormice, get an advantage from the corridors provided by a hedge rather than ending up in isolated pockets.
In spite of all this, farmers were once incentivised to grub up hedges and since 1950 we have lost 118,000 miles of hedgerow in Britain. Nowadays planting a hedge can attract grant money but there is some way to go. Many people may be able to help by planting a stretch of hedgerow in their garden or replacing an existing hedge which may just consist of Leylandii, Privet or Laurel which brings limited benefits to wildlife. A traditional hedge often included a mix of Hawthorn, Blackthorn, Hazel, Ash and Oak with extra fruit from Bramble and Guelder Rose (pictured). The Scouts are planning to plant some more hedgerow at Goldsland Farm this Autumn so if you would like to help, look out for more details in the coming weeks