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Restoring
and maintaining the Sandlings requires a variety of management approaches
- many are experimental and reflect the pioneering
nature of the conservation effort to safeguard the Sandlings.
The restoration and maintenance
work focusses on:
- reducing encroachment by invasive
species
- increasing the area of heathland
by re-creation works
- restoring traditional grazing management
- linking the fragmented sites together
Hand in hand with this is the
need to increase public awareness of heathlands through volunteer
tasks, events and publicity.
Scroll down the page or browse the quick-list below
to find out more about the work on the Sandlings.
Management approach 1
- Scrub clearance
Scrub
management work is very variable on the Sandlings heaths. There
are three key species, namely birch, pine and gorse, and the management
can have two separate aims; coppicing or eradication. Coppicing
is generally restricted to gorse management, aiming to create dense
growth up to 8 - 10 years old which provides ideal nesting sites
for a range of heathland bird species such as the Linnet.
Whether coppicing or eradicating scrub, the operation
is very similar. Scrub and trees are cleared in the October to March
period by hand pulling or felling using hand tools, clearing saws
or chainsaws, depending on the situation. Material that can be made
use of is set aside, the smaller birch stems being bundled into
faggots for horse jumps or estuary revetment work and the larger
trees logged for firewood. Some wood is chipped and used as garden
mulch. Waste material is usually burnt or stacked on site. The variation
in management between species and aims comes with the timing of
the operations and with the treatment after felling.
Where pine scrub is being cleared the operation is
usually a simple one, with a single cutting and burning session
being sufficient. This is because pine rarely regenerates from a
cut stump.
Birch scrub will regenerate after cutting, and where
eradication is the aim then further management is necessary. This
can either take the form of immediate stump treatment using selective
herbicides to prevent regeneration, or alternatively summer foliar
spraying again using selective herbicides during the following June
to October period. If possible regenerating birch should be exposed
to grazing , either by livestock or wild deer and rabbits. This
puts the plant under stress, and can be sufficient to prevent regeneration
without herbicide treatments.
Gorse eradication work is best done in the early winter
period, from October to December. Early cleared gorse appears less
prone to regeneration, possibly because the winter frosts do more
damage to the longer exposed roots.
Gorse coppicing works are often more effective if
carried out later in the winter, after the worst frosts have passed.
It can be necessary to protect the coppice gorse stumps from rabbit
grazing through the erection of temporary rabbit exclosures, either
standard specification rabbit fencing or exclosure panels.
Management approach
2 - Grazing

The
extensive heathlands that existed throughout the Sandlings area
for most of the last thousand years were created and maintained
by sheep grazing along with the activities of wild animals such
as rabbits and deer. Management using livestock gives a complex
mosaic of randomly managed and unmanaged areas on a very small scale.
This level of 'micro-management' cannot be reproduced using any
currently available machinery, nor is it ever likely to be possible
without the use of stock.
As well as producing ideal heathland habitats, livestock
grazing prevents or considerably reduces the encroachment of a number
of heathland invasive species, particularly birch and rough grasses,
reducing the levels of direct intervention required. Grazing management
is key to any long term management strategy but it is costly but
should be seen as a management tool as well as a product. Although
there are incomes from the flock in terms of livestock and meat
sales, wool sales, agricultural subsidies and an effective sponsorship
scheme, grant aid is still required to support the costs of heathland
grazing.
Although it is well known
that the Sandlings were extensively grazed through to the 1920's
and later, the 70 year gap in grazing has meant that most of the
shepherding knowledge has been lost. Added to this is an
effect of fragmentation of the heaths and development within the
Sandlings - it is no longer possible to walk the flock from heath
to heath, or to let stock roam at will across the open commons.
Transport and fencing is essential for the reintroduction and management
of grazing.
Suffolk Wildlife Trust currently has flocks of Hebridean
and Speckle Faced Beulah sheep specifically chosen for their ability
to cope with grazing heathland and rough pasture. These are moved
around the Sandlings during the spring, summer and early autumn
as required to sites managed by Sandlings Group members.
Through the rest of the year they perform a valuable
conservation role by grazing flower-rich meadows and low input pasture
land on SWT reserves, County Wildlife Sites and Environmentally
Sensitive Areas.
Information
on sponsoring a Sandlings Sheep
Nationally there have been problems in locating enough
stock for conservation grazing. At the same time stock owners, particularly
some rare breed owners, have had difficulty securing sufficient
pasture. English Nature has founded the Grazing Animals Project
to try to address these problems, as well as working to identify
best practice, research cost-effectiveness and encourage regional
grazing schemes such as the Sandlings flying flock to start up.
The Sandlings Project has been involved with GAP from the start,
offering the knowledge gained over the last 10 years work and hoping
to learn from others.
Management approach 3
- Tree clearance
Large areas of heathland have become colonised
by secondary woodland due to the decline of management and particularly
since Myxamatosis reduced the rabbit population in the 1950's. Many
people can still remember local heaths as wide open spaces with
few trees but the clearance of these areas of relatively poor quality
woodland remains a sensitive issue.
Scattered trees and small copses are valuable to heathland
species and landscapes so it may not be desirable to clear all the
trees from a heath. The rarity of heathland however means that a
significant amount of this woodland will be removed as part of the
restoration process. This is done in consultation with the Forestry
Commission and other organisations. The products of tree clearance
are used for timber, firewood, fuel for power stations and garden
mulch.
Management approach
4- Controlling bracken
Cutting or crushing
Bracken encroachment is a serious problem through
the Sandlings. A considerable amount of work has been carried out
to clear bracken from the heaths which has shown the best mechanisms
for eradication, but there is still a considerable problem to control.
Bracken control mechanisms vary depending on the underlying
plant community. Over acid grass heath bracken should be mown or
crushed at least once in the year before spraying. Ideally bracken
stands should be mown once in the winter then two or three times
in the summer. Winter mowing clears the standing dead bracken, exposing
the rhizomes to frost and leaving the area unattractive to nesting
birds the following Spring, particularly nightjar. Summer mowing
in June and July, with another later mow if necessary, puts the
plant under considerable stress, increasing the susceptibility to
herbicide and reducing the height of the plants making management
safer and more straightforward.
In some areas of the country bracken is cut and composted
either on its own or mixed with other material. This requires quite
a lot of time and effort and has only been trialed on a small scale
in the Sandlings but may prove fruitful in the future.
Spraying
Over heather stands it is not reasonable to mow
the bracken because of the long term damage this would do to the
underlying vegetation. Spraying is carried out without this preparatory
work.
Spraying is done using a specific herbicide (Asulox).
Application is normally by hand held, tractor/ATV mounted, or helicopter
application as appropriate to the site conditions . Correct timing
and weather conditions are crucial and set down on the chemical
label usage conditions. Spraying is carried out in two phases. The
whole stand is treated in the first year, then the stand is retreated
in the first or second year following, to kill any rhizome that
has survived the original operation.
Clearing deep bracken litter
Where bracken stands have existed for some years
there is a build up of bracken leaf litter. This acts as an effective
deep mulch, preventing the regeneration of heathland vegetation
even after the stands have been treated with herbicide.
These deep litter stands must be cleared before regeneration
of the heath can occur. This is done using a forage harvester or
pick up mower set to ground level. These machines are both able
to lift and collect bracken litter, which can then be removed from
site and used in horticulture. The stands are often very deep and
the litter too dense to lift in a single operation. This makes it
necessary to repeat the operation in subsequent years, allowing
frost and weathering to break up the stands.
Re-creating Heathland
One of the major losses of heathland this century
has been to agriculture, with over 2000 Ha. of rough sheep grazed
heaths and commons being ploughed up for crop production.
One of the key environmental aims
for the Sandlings heaths is to re-create heathland on land that
is currently used for arable or forestry, aiming to increase the
total area of heathland and link existing heaths reducing fragmentation.
The RSPB bought a significant area
of arable land (158 Ha.) in 1989 with the aim of reverting the area
to heathland. The RSPB together with various academic institutes
has carried out a considerable amount of research on re-creation
mechanisms. The Sandlings heaths in common with most heathland in
the UK are on acidic soils. The heathers in particular will only
thrive on an acidic substrate. Central to the RSPB research has
been the investigations into pH reduction to revert the arable soils
from neutral to acid. The results of the research suggest that the
use of elemental sulphur is effective in reducing the soil pH .
The RSPB and National Trust have recently purchased
a large area of arable land between Dunwich Heath and Minsmere with
the help of the Heritage Lottery Fund and are aiming to re-create
a heathland habitat.
Forestry
land
Heathland is an important component of the Sandlings
Forests at Rendlesham, Tunstall and Dunwich and large areas have
been designated as SSSI and SPA to recognise their importance for
Woodlark and Nightjar. Pine forests can quickly revert to heathland
as they are already quite acidic and heather seed can lie dormant
for many years. The Forestry Commission manages its forests for
people and wildlife as well as timber and its design plans encompass
the needs of all three. Some areas are managed specifically for
the heathland habitat, especially where links can be made between
existing heaths and the requirements of heathland species are considered
in the pattern of tree felling that is followed in timber production.
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