Sunday 23 November 2008

Coppice Diary - Autumn 2008

If you visit Hatfield Forest you will almost certainly see areas of woodland which have been managed by coppicing. This way of managing woodland has gone on for thousands of years. Today, it is practised to encourage biodiversity, the act of rotational coppicing ensures that the woodland is always at different states of regeneration which encourages a wide range of different habitats. What evidence can be seen through the year of biodiversity in the coppice? This is what the woodland looks like before coppicing. And the huge increase in biodiversity that results after coppicing. At the beginning of October the National Trust Coppicing Volunteers began work in their area of the forest known as Collins Coppice. Coppicers are not only felling trees but also building 'stockades' around the stumps to protect them against deer browsing. The felled timber is a sustainable source of firewood. At this time of year the leaves are still mostly on the trees and it is a good opportunity to check the regeneration from the stumps cut last season. This Field Maple followed by one years regeneration on a stump of this same species. We expect there to be in excess of 2m growth on Hazel in particular in the first season. This ia an Ash tree which should have been re-coppiced many years ago, if not coppiced it will die, coppicing extends its life indefinitely. Coppicing also gives seeds like these young Oaks a chance germinate.Here are two examples of coppice plants, firstly the twisted stem of the Honeysuckle. And secondly, Beefsteak fungus on an Oak. There is evidence of Badgers and Foxes by their dung pits and scats respectively.

Monday 10 November 2008

BSNHS Winter Programme 2008- 2009

WINTER PROGRAMME 2008


FRIDAY 26th SEPTEMBER
ESSEX TREES.
An illustrated talk by M. W Hanson.

FRIDAY 10th OCTOBER
FUNGI
An illustrated talk by Mary Smith

FRIDAY 24th OCTOBER
SLUGS and SNAILS
A talk by John Llewellyn Jones

FRIDAY 7th NOVEMBER (to be confirmed)
MICROBIOLOGY
A talk by Dr. Wreghitt.

FRIDAY 21st NOVEMBER
THE IMPACT OF DEER IN THE EAST OF ENGLAND.
A Powerpoint Presentation by David Hooten of the Deer Initiative.

FRIDAY 12th DECEMBER
Members’ Slides and Social Evening


FRIDAY 23rd JANUARY
BADGERS.
An illustrated talk by Bob Reed, Society Chairman

FRIDAY 13th FEBRUARY
PHYLLIS CURRY NATURE RESERVE.
An illustrated talk by Sylvia and Roger Jiggins

FRIDAY 27th FEBRUARY
BAT SURVEYING.
An illustrated talk by Andy Froud and Keith French

FRIDAY 13th MARCH
TALES PLANTS TELL - a look at some interesting plants from around the world.
A talk by Tony Boniface

FRIDAY 27th MARCH
BEES, WASPS and ANTS of ESSEX.
A Powerpoint presentation by Peter Harvey

FRIDAY 24th APRIL
Annual General Meeting and Social Evening

Sawbridgeworth Marsh Nov 2008.

The winter activities on the marsh are now well underway. The peatbank and a couple of plots in the grazing enclosures were cut and cleared during September, the paths recut for the final time this year and the drains lining the boardwalk “brinked” (vegetation bordering the drains cut).
Most of the management tasks on the marsh take place during the winter months, October through to March. One of these is to pollard some of the Crack Willows. The reserve has a large number of these. In order to prevent the branches becoming too long and heavy, with the result that the stock of the tree splits and falls over in strong winds, groups of these willows are recut every five years. By cutting some, but not all, in any 1 year, willows can be seen at various stages of regrowth around the marsh.

Sawbridgeworth Marsh Diary - Autumn Update – 2nd November 2008
Pollarding entails cutting the tree at a height above the ground. Originally, pollarding was carried out in areas where stock were also grazed and cutting at height prevented the animals from browsing the new regrowth. It is, however, difficult and hazardous work and pollarding of most tree species ceased in the early 19th Century. Crack Willows are the notable exception to this and may still commonly be found alongside rivers and fen drains. Three bollings, as the cut trunks are known, were pollarded alongside the backwater over the last couple of weekends. The harvested poles will be used to repair some of the footpaths in the centre of the reserve. By cutting them into short sections and burying them into the peat, the heavily poached paths stabilise and eventually grass grows over the top, hiding the willow poles from view.
New pollards may also be easily started by pushing the poles into the wet ground, where they strike readily. This has been done in Little Valet Homes, where lines of old Crack Willow pollards line a network of old drainage ditches – one of the special landscape features of the reserve. New pollards have been started in the gaps created by the decay and death of a few of the older trees.
A new pond was dug on Little Valet Homes meadow in August. This small meadow was botanically poor, the result of enrichment caused by the dumping of river dredgings in the 1960s. The sward was dominated by rank grasses, Dock, Nettle and Cow Parsley, despite much management effort over the years. A new wet meadow has been created in the next field, Great Valet Homes, on ground that is not enriched and it is hoped that species such as Lady’s Smock, Southern Marsh Orchid and Ragged Robin will eventually colonise this area.

Andrew Sapsford, Marsh Warden.