Pond restoration & management


Have you ever thought – what is the difference between a pond and a lake? And what’s the difference between a pond and a wild life pond? These along with many other questions were raised by Rod d’Ayala, an ecological consultant running a fascinating day course on pond restoration and management which I attended a few months ago.

Over the last century half a million natural ponds have been lost and as two thirds of all freshwater species are supported by ponds this has resulted in a great decline in UK amphibians. Whilst there has been a renewed effort to improve pond numbers in the last decade resulting in a slight increase, their quality as wild life ponds supporting a diverse range of aquatic plants, amphibians, invertebrates and reptiles is unfortunately diminishing. Over 80% of the remaining UK ponds are in a poor state. (Source: Freshwater Habitats Trust)

Woodland wild life pond

Woodland wild life pond

A ‘pond’ and a ‘wild life pond are two very different things. Whilst we may think the ideal pond is an open watery expanse with resident ducks, fish and grassy banks – this perfect picturesque village pond is likely to be polluted, nutrient rich and wild life poor. Our natural ponds in the countryside are also often in a poor state. They regularly suffer from water and chemical pollutant run off from fields and road sides and usually exist as isolated pools with little or no beneficial access for surrounding wild life.

A wild life pond needs clean rainwater not run off from land, roads or pathways which can carry silt, pollutants and chemicals directly into the pond. It also requires good wild life surrounds which encompass variation in habitats and structures. It’s vital that correct aquatic planting is practiced – only using uk natives plants in public ponds – combining the correct ratio of marginals and oxygenators in  the depths, shallows and pond edges to provide a diverse range of conditions. Which in turn maximises species diversity and numbers. And all wild life ponds benefit hugely when situated close to other wild life ponds, as each one will offer different depths of water, temperature and conditions at different times of the year allowing species to migrate as required.

Therefore the ideal is a network of ponds and ponds near clean river systems. This allows for individual species to move and recover when conditions are adverse in their original pond allowing overall numbers in the network to remain healthy. The Million Ponds Project is an attempt to redress the balance and restore a million clean water countryside ponds with suitable surrounding habitat to support a diverse range of species. So far the Freshwater Habitats Trust has coordinated the creation of a 1000 clean water ponds for wildlife  in collaboration with land owners and land managers. Public donations and a grant from Biffa Award has paid for the work thus far but further donations are required to continue this valuable work for UK conservation.

Rod argues that another problem that wild life ponds face is human intervention at the wrong time. Once a pond becomes overgrown and less aesthetically pleasing we tend to want to clear out the excess vegetation and dredge the bottom of silt as part of a restoration process for the benefit of the pond and it’s wild life. This is often carried out by councils, landowners and farmers with the best intentions but we perhaps need to accept that ponds are successional habitats. Like all things ponds have a life span and over time animals and plants colonise them and this is perfectly natural. Plants grow in from the margins towards the centre, sediment accumulates, water depth reduces and permanent ponds become temporary.

Pond2 Rod D'aylaIt’s worth remembering that it takes just 10 cm of fresh pond water for most invertebrates to occur and thrive. And temporary ponds are part of the ebb and flow of some wildlife pond life cycles. When a temporary pond bed dries out it allows organic leaf debris to break down and so maintains a consistent water level when it refills. Whilst permanent ponds ultimately fill up with organic debris which is unable to break down fully in water and over time reduces water levels to a point of drying up completely.

And by the way – “a pond is a natural or artificial still water body of up to 5 acres that holds water for up to 4 months a year. Whereas, a lake is a permanent large body of water over 5 acres with significant wave action stratification of water” Rod d’Ayala.

For further information on:

  • habitat and species surveys
  • habitat creation, management, advice and planning
  • protected species work
  • talks, walks and teaching
  • Million Ponds Project
  • Pond conservation
  • Amphibian and Reptile Conservation Trust
  • Freshwater Habitats Trust

www.oxfordshire-arg.org.uk

www.freshwaterhabitats.org.uk

www.arc-trust.org/projects/archived/million-ponds

 

 

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Community Groups Greening up Chesham

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In 1257 Henry III granted the town of Chesham a royal charter to hold a weekly market. Today Chesham is still known as a market town and holds 3 regular markets as well as occasional specialist markets along its high street. It is also home to a quiet revolution of community spirit greening up its … Continue reading

Garden Bioblitz 2013

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Serial Killer Plants

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Ashridge Estate & Aldbury Nowers

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Our Wildlife Gardeners

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Mini Meadows

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As I write this it seems that these cold days and nights will never end but of course they will. As Spring buds and bulbs start to push their way through, it’s good to remember how glorious Summer can be. With a little planning now you could have your own mini-meadow buzzing with life, colour … Continue reading

How to create a wildlife friendly garden

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How you can help wildlife in your garden to flourish For the last 5 years I have tried to create a wildlife friendly garden that encourages as many insects, butterflies, bees, dragonflies and birds as possible. This means that I practice organic gardening, with the vegetables, fruit and plants that are grown and I have incorporated a … Continue reading

Your roadside verges

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All day I’ve read complaints on Twitter from people dismayed about their local roadside verges being mown to within an inch of their life, just as they are in full bloom with wild flowers and bluebells. So I decided to speak to my local District Council to ask them what their policy was. In some … Continue reading

Step by Step Guide: How, Where and When to Plant a Meadow


What is a meadow?

Under Crab Apple Tree after rain (Photo: Linda Wordsworth)

meadow is a field vegetated primarily by grass and other non-woody plants (grassland). The term is from Old English mædwe. In agriculture, a meadow is grassland which is not grazed by domestic livestock but rather allowed to grow unchecked in order to make hay. It may be naturally occurring or artificially created from cleared woodland. (source: Wikipedia)

What’s happened to our meadows?

Poppy Field (Photo: Meadow Project)

Over 95% of our native flowering meadows have disappeared since the war due to intensification in agricultural practice. UK meadows would traditionally have been part of our natural rural landscape and even today most people visualise a field of poppies and cornflowers when they think of a meadow.

Are there different types of Meadows?

Martin Down grassland meadow (Photo by Richard Russell)

Martin Down grassland meadow (Photo by Richard Russell)

There are many types of meadowsgrassland meadows, lowland meadows, water meadows, summer meadows, spring meadows and cornflower annual meadows. If you are considering a site for meadow creation you need to ask what would this land be in it’s natural state? A grassland meadow? A hay meadow? A water meadow?

It may be the right course to just leave the land untouched for a couple of years to allow any dormant  seeds to get established, allowing nature to reclaim the area before you add or change anything. It’s also vital that you get the site checked for current plant species as you may find you are digging up naturally occurring wild flowers to replace them with your version of a meadow.

Bee gathering nectar (Photo: Meadow Project)

Bee gathering nectar (Photo: Meadow Project)

It’s worth noting that “The dominant plants of meadows are native, rather than cultivated, grasses, interspersed with a great variety of different herbaceous flowering plants. Most of the plants growing in meadows are fairly common species also regularly found in other habitats. With the notable exceptions of certain now rare species such as orchids, fritillaries and cowslips, the main value of meadows lies in the sheer diversity of their plant life. This affords a local concentration of a wide variety of invertebrate food plants, together with shelter for a great many different invertebrate species. This in its turn means that there is an abundance of food for birds and mammals. The actual plant species composition of meadows will vary from area to area, depending on local geological, soil and climatic conditions” (Source: http://www.countryside.info.co.uk)

How big should it be?

Obviously most of us do not have the luxury of a vast piece of land to play with and so I believe any area, however small that is turned over to wild flowers, or converted from treated mown grass to untreated meadow grass is an incredibly important asset for our communities and our local flora and fauna and can be achieved wherever we live. We call these mini meadows and it could be part of your lawn, a grass verge or a corner of your garden.

If you don’t feel inspired just take a look at this little mini meadow that Owen Rogers created on his windowsill. It contains 15 nectar rich wild flower species to attract bees and butterflies. Owen tweeted “my local GC had wildflowers on sale and couldn’t resist!”

A nectar rich new meadow can be a road side verge or a green space around urban housing and tower blocks. It can be a ribbon edge between your mown lawn, garden beds, boundary or hedges.

Roadside verge Hogarth Roundabout, Chiswick West London (Photo: Meadow Project)

It can be in your public park. So talk to your local council and ask them why they are not planting perennial British wild flowers instead of annual sterile bedding plants. Ask your local council to leave  unmown grass edges around their grassed areas; it costs less to maintain, and also creates a lovely wildlife rich area for local people to enjoy. Ask them to stop spraying your public green spaces with pesticides and weed killers. It’s bad for our environment and for our health and wastes our limited financial resources.

If the area you are thinking of converting is particularly small,  don’t despair. Plant perennial wild flowers,  they take less maintenance once established and come up year after year. If you are converting a mown grass area to a wild flower meadow, once established, a small area will be easier to manage and less time consuming than a manicured lawn. Once established, it only needs cutting once/twice a year, (make sure grass cuttings are removed). And a small area can be cut with hand shears and raked, and requires no ‘weed and feed’ chemical treatments.

Test your soil

Perennial wild flowers prefer infertile soil where as annual cornflowers can tolerate both fertile and infertile soil. So if you want a wild flower area or meadow that comes up year after year you may need to remove your top soil to reduce soil fertility. In addition you need to check what type of soil you are dealing with. Is it clay, sandy, loam, chalky? Pick up a basic soil testing kit from your garden centre to check your soil, and choose the wild flower plants that do well in the type of soil you have, otherwise you may be disappointed with the results.

Find a suitable site

Firstly, make sure that you are not disturbing rare or established nectar rich flowering plants or hedgerow. The ethos of Meadow Project is to add positively to our environment not diminish it in any way. A basic plant survey is a great tool and will tell you a lot about what already grows well in the area that you are choosing. If you are lucky to live near to the countryside or a piece of wasteland you can use it to see which local wild flowers are suitable for your area. Please do not remove plants from these areas but use it to gather information to select suitable seeds and plants which you can buy from reputable websites and garden centres. You can also contact The Postcode Plants Database which has useful information on plants that are specific to your area. The website was produced by Flora-for-Fauna, and enables you to generate local lists of UK plants (flora) and/or animals (fauna).

Annual cornflower meadows do best in a sunny position with good drainage, though they may need watering during long dry periods. Perennial local wild flowers once established (after 2nd year) will pretty much fend for themselves as long as competitive weeds are kept under control. There are wild flowers that do well around hedgerows and in shady woodland conditions but if you want a perennial wild flower meadow you again need a site with reasonable sunny conditions and good soil drainage, unless you are creating a water meadow.

Naturescape says “Sites suitable for a  meadow within the garden  are best positioned at the furthest end of the lawn from the house. If this extends into trees or wildlife hedge so much the better, with the object of becoming more wild as one moves away from the house. Grass banks can be made to look spectacular since they are often well drained and of low fertility, an ideal site for a meadow”

Choose the right seeds or plug plants for your soil and site

If you are sowing an annual wild flower meadow, you can sow in Autumn (October) for a Spring flowering meadow or in Spring (April) for a summer flowering meadow. If you are creating a perennial wild flower meadow you will have a better chance of success if you plant plugs rather than sow seeds.

Below are some ideas for suitable British wild flower plants, seeds and bulbs for a variety of situations by Habitat Aid. I have linked some of the plant names to the relevant page on the Habitat Aid site which offers a more detailed description and possibility to purchase. Each heading is also a direct link to wildflowers.co.uk with another comprehensive list of suitable plants for you to look at or purchase.

Shady/Woodland conditions

Ringlet Butterflies and bees on Round headed leek (Photo: Habitat Aid)

Round-headed Leek (Allium spaerocephalon)
Round-headed leeks are native, but rare in the wild. They work well in formal gardens planted in numbers, and are helpful nectar plants in June/July.

Anemone nemorosa (Photo: Habitat Aid)

Wood Anemone (Anemone nemorosa)

Beautiful woodland native, flowering in early spring. Does best in light shade. Good source of pollen for bees.

Lily of the Valley (Photo: Habitat Aid)


Autumn Crocus (Colchicum autumnale) Meadow Saffron, or Autumn Crocus, blooms in September when its beautiful pale purple flowers provide useful late forage for bees.

Lily-of-the-valley (Convallaria majalis)
Beautiful fragrant woodland native, flowering in June. Good source of pollen for bees. Flowers: Late spring

Fritillaries (Fritillaria)
Delicate and beautiful, the native Snakesehead fritillary, Fritillaria mealeagris, is now rare in the wild but is a beautiful plant to grow in the garden.

Solomon’s Seal (Polygonatum x multiflorum)
Graceful tall woodland native, flowering in June. Good source of nectar for bees. Flowers: April – May

Semi Shade

Chives (Allium schoenoprasum var anglicum) An attractive form of chive, native to Britain.

Red Campion (Photo: Habitat Aid)

Red Campion (Silene dioica) Lovely rose-pink and long flowering perennial of light shade. good nectar sources for moths and therefore help to sustain out native bats. Campion Moths lay their eggs  in the flower head, and the growing caterpillars feed on the seeds.

Foxglove (Digitalis purpurea) Beautiful and evocative native foxglove; a helpful plant for shade and bumblebees.

Yarrow (Photo: Habitat Aid)

Sunny

Yarrow (Achillea millefolium) Flat white flower heads, much visited by butterflies and hoverflies. Drought tolerant, requires well drained infertile soil.

Agrimony (Agrimonia eupatoria) Spikes of attractive yellow flowers in high summer

Lesser Knapweed (Centaurea nigra) Thistle like perennial flowering all summer long. Great nectar plant, probably the best in terms of  its wildlife value.

Meadow Cranesbill (Photo: Habitat Aid)

Meadow Cranesbill (Geranium praetense) Pretty, resilient plant of grassland and scrub.

Field Scabious (Knautia arvensis) Beautiful plant, typical of chalky grassland.

Oxeye Daisy (Photo: Habitat Aid)

Oxeye Daisy (Leucanthemum vulgare) Cheerful long flowering perennial, early colonizer. Annually cut and thoroughly rake your meadow to open up spaces for plant’s seeds to fall and germinate, maintaining its presence in your meadow

Common Toadflax (Linaria vulgaris) Lovely yellow flowers, grows on dryer soils and in most locations, where its seed can be sown at any time of year.

Yellow Rattle (Photo: Habitat Aid)

Cowslip (Primula veris) Beautiful early harbinger of spring, now surprisingly difficult to find in the wild. Cowslips thrive in well drained but moist soils, and need an open sunny site. Cowslip seed needs a period of cold before germinating, so should be sown in autumn.

Yellow Rattle (Rhinanthus minor) Seed Yellow Rattle is an attractive semi-parasitic annual which will significantly reduce the vigour of most grasses, and is consequently a useful plant in meadow management. grassland of low to medium fertility and with a balanced sward which is not dominated by coarse vigorous grasses. To sow Rattle into existing grass, cut or graze it short (25mm) and harrow, rake, or lightly disc, aiming to create up to 50% bare soil.  Sow in autumn or early winter up to Christmas.

Wet

Autumn hawkbit, Birdsfoot trefoil, Common knapweed, Creeping bent, Crested dogstail, Meadow buttercup, Meadow sweet, Ox-eye daisy, Ribworth plantain, Rough hawkbit, Rough-stalked meadow grass, Selfheal, Slender creeping red fescue, Yellow rattle

Coastal

Viper’s Bugloss (Echium vulgare) Biennial much loved by bumblebees, tolerant of very dry conditions, prefers sandy soils, long flowering period.

Biting Stonecrop, English Stonecrop, Evening Primrose, Jersey Thrift, Rock Samphire, Rock Sea Spurrey, Sea Arrow Grass, Sea Campion, Soapwort, Thrift, White Stonecrop

Prepare your site

Prepared area, sown and covered in netting (Photo: Meadow Project)

Remove weeds, roots,  and top soil to remove fertile layer. Dig over the area and rake to a fine tilth. Where possible leave for 6 weeks to allow dormant seeds to emerge. You may find you already have a wild flower store of seeds waiting to emerge so monitor what comes up and remove unwanted seedlings.

Sow your wild flower seeds

Choose a non windy and cool day if possible to sow your seeds. Mix your British wild flower seeds with fine dry sand in a bucket to help to sow evenly across  the newly prepared area. Broadcast sow in waves and repeat in opposite direction to give a natural flowing look. Gently firm the seeds into the soil by methodically walking across the area. Water in gently making care not to wash the seeds away. Cover the area with netting to protect from birds until the seedlings emerge and are a couple of centimetres high. Make sure you leave the netting secured close to the ground and regularly check that no birds or wildlife are trapped in it.

Plant your perennial plug plants.

Make sure to position your plant plugs in a flowing design rather than rows and intermingle different plants to create a more natural look. Do not add compost or feed, remember most perennial wild flowers prefer poor soil. Mix in annual British wild flower seeds to infill any areas in the first year as some of the wild flower perennials may not flower in the first year. Firm in plug plants and water in well. Keep watered for  the first 2-3 weeks to encourage healthy deep roots.

Spring wild flowers on Guernsey

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Congratulations Guernsey! I’m currently enjoying lovely coastal walks where spring wild flowers are in abundance. Haven’t had time to identify most of what I’ve photographed but I can tell you that there is wild garlic, bluebells, celandine, gorse, primroses, phlox and violets amongst many others. Take a look at the photos and feel free to … Continue reading