Darcy Lever Gravel Pits: Restoration

Pond restoration Sunday 12th February 2023

The Darcy Lever gravel pits were formed around 40 years ago when the site was used for the extraction of aggregate to be used in the construction of St.Peter ‘s Way; the construction crews left but the holes in the ground remained and soon filled with water. Over time the site matured and in the early noughties great crested newts were found on the site.

BCV at the Pits 2006
BCV at the Pits 2006

In 2003 a new conservation group was set up by Mike, Dave, Denis, and John to look after the site, the Gravel Pits Action Group (GPAG). Since then GPAG has been maintaining the gravel pits for its wealth of wildlife which includes great crested newt, palmate and smooth newts, common frog, common toad, 18 species of dragon and damselfly, deer, bats, foxes, a multitude of bird life, fungi, and a wide variety of plant life.

In recent years many of the 24 ponds on the site have been in decline, silting up and becoming dominated by typha. The good news is that GPAG obtained funding from English Nature and the Greater Manchester Ecology Unit to restore the site to its former greatness, these 2 bodies provided contractors to dig out several of the ponds in a project planned to run over the next few years.

BCV was involved in some of the early work on the site, but it’s been well over a decade since BCV and GPAG worked together. Well, we’re getting the band back together, GPAG and BCV are once again joining forces to help the gravel pits return to being arguably Bolton’s most biologically rich site.

Today’s task involved removing trees from around the pond, letting in more light to reduce the build up of leaf litter. More light means the oxygenating plants can function better, more sunlight also creates a warmer microclimate which will benefit dragonflies and amphibians. Removing trees also gave us the chance to try out our new piece of kit – a winch. On today’s task we used a hand operated winch to drag a felled tree out of the pond. No more bad backs.

Many thanks to Mike and the GPAG team for inviting us back to the pits, and thanks to BCV’s volunteers for taking part. More pond work can be found in the pond category.

Doffcocker: Coppicing Osier

Coppicing at Doffcocker Lodge, 29th January 2023

Doffcocker Lodge Local Nature Reserve, was Bolton’s first, and for many years only LNR. The lodge was originally built to supply water for Bolton’s industry and made use of the site’s elevation and plentiful water supply from the numerous springs and streams running into the valley. Today it is a haven for bird life including kingfisher, reed bunting, willow tit, and an occasional stop over for bittern.

Our task today was harvesting osier stems from one of the 3 compartments on the northern shore. The compartments were originally created to prevent Canada geese from damaging the vegetation along the shoreline, leading to erosion and loss of habitat. This has allowed willow to grow and in doing so stabilises the soil and create habitat, but it needs to be managed. The last time we did this was in December 2020, before that it was 2015.

December 2015

Coppicing is an age old woodland management technique that exploits our native trees’ ability to regrow after being damaged. Cutting these trees back causes them to regrow new shoots and stems which can then harvested for firewood, charcoal making, or craft materials. In this case we’re coppicing osier to for use in hurdle weaving projects at local schools. All of the willow that was cut will regrow and in doing so create habitat for birds and invertebrates. It is a highly sustainable method of woodland management and causes no harm to the trees used for harvesting.

Incidentally, Doffcocker is derived from the site’s Celtic name meaning The Black Winding Stream. I bet you really wanted to know that, so now some photos.

Walmsley: Do Ponds Succeed?

Sunday January 1st 2023 – Pond Management

We began work at Walmsley Unitarian Chapel, Egerton, thirteen years ago, back then the area beneath the cemetery, called Spring Meadows, was dominated by willow and there was no open water to speak of. So on a cold snow covered day in January 2010 we began work clearing out the willow and prepping the site for pond digging, by the end of the day there were fewer willows and plenty of scope for improvement. In March the same year we got a big digger in to dig out the ponds we see today, the site was still pretty desolate at this point but the ponds quickly filled with water. We threw in a few aquatic plants and left the site to cook for a while and when we returned in August 2013 there was a new Eden; the ponds were established, the wildlife was thriving, and the transformation from desolation to restoration was complete.

2010: Walmsley Chapel, pond work begins.
2010: Walmsley Chapel, pond work begins.

But nothing in nature ever stays static. Ponds are temporary and through the process of succession will move from open water to dry land. This progression, called a hydrosere, has seven stages: phytoplankton stage, submerged stage, floating stage, reed swamp stage, sedge-meadow stage, woodland stage, and climax stage. Not all ponds will follow this idealised pattern, the size of the pond and other factors can mean that some stages are skipped or never reached. Spring Meadows has a long history of being wet and boggy, the name itself suggests that at one time the site may have been water meadow. When BCV first started work here the site had no open water and was mainly willow carr fed by springs and run-off from the surrounding land as has been the case for decades if not centuries, it would be unlikely for this area to ever dry out completely but the ponds could still disappear if not looked after.

Once created ponds take effort to maintain. One of the things we did in previous years was to install silt traps to stop the ponds being filled in by sediment. Periodically removing the self seeded reed mace (Typha latifolia) will also stop the ponds becoming drier. Drying out happens partly through transpiration, ie the plants act like water pumps sucking up moisture and drying out the edges creating more space for plants to grow. Also, by removing the Typha and other aquatics we can stop the build up of dead material which would otherwise reduce water quality, reduce the depth of water, and form more growth medium for future generations of plants. Digging out the silt traps and digging up the Typha were the main goals of today’s task.

Do ponds succeed? Only if we let them. Thanks to everyone involved for making this task a success.

Moses Gate: Halloween

Sunday 30th November, Tree Planting

Concerned stakeholder

Professor Van Helsing sat in the semi-gloom of his mansion, quietly savouring a flagon from the cask of Amontillado he kept in his private cellar. While sharpening his one remaining stake he suddenly became aware of a strange noise coming from the kitchen wing, “Hmm,” he thought, “The servant’s locked away in his shuttered room, what can this be?” He rose and, cautiously, made his way to the location of the disturbance.
It was coming from behind the door to the larder.
Grasping the door’s handle, he readied himself, stake in hand, then pulled open the door to find.. nothing.
He realised with horror that the cupboard was bare and that he was going to have to go shopping.

Grabbing his Burberry coat and his pointy stick he exited the safety of his home and stepped out on to the dark, rain slicked streets of Murderside. He walked along Grimm Street, footsteps echoing as he passed beneath the flickering gas light. Coming to the last house on the left he turned down the Rue Morgue, a road well known for knife wielding primates and undead drag artists. The street was entirely dark, he suspected Council cutbacks and carried on stake in hand.

Suddenly three dark shapes, like women in black (although they may self-identify differently) detached themselves from the shadows and flew at him. Vampires! He had one stake and there were three of the creatures. He acted quickly. As two of the undead closed on him he deftly impaled them both with one stake, for the third he whipped out his pruning saw and de-limbed it shouting, “Timber.” As their dust drifted away, he muttered too himself, “While there’s a moon over Bourbon Street they will not gain victory.”

Returning home after his adventure and a nut cutlet, he realised he would need more stakes. He would have to use dark magic and invoke the Bolton Conservation Volunteers for help. He knew the dangers, knew the cost, knew what price they would ask. But it had to be done.

Taking down a long forgotten tome of Druidic lore he spoke the sacred words, “From the land beyond Bol-ton, from the world past hope and beer, I bid you BCV now appear.” He splashed the carpet with a small amount of ancient Super Seven ale and stood back. Slowly a mist rose from the age worn carpet, like stale smoke drifting musty and cold, the shapes began to take form, solidifying into the ghoulish group of hideous misfits that was BCV.
“I need you all to plant some trees that I can cut down later on and turn into stakes,” said Van Helsing.
“You have Jaffa Cakes?” asked one with spiders in her hair.
“No, not until you’re done. We need to go now, I don’t want to be late. And you can’t stay til morning, there’s no room.”

As they set off, travelling through the night to Mouldy Gate Park like a circus of horrors. As dawn broke the Professor laid out his plan.
“We’re not building a cabin in the woods, we’re planting bare rooted trees and sticking willow stems into the ground. I need enough stakes for an army of the damned to make war on the evil dead.”
“You have Jaffa Cakes?” asked a green haired freak.
“No,” said the patient Professor. “But, carry out my wishes and you’ll have more cakes than you can eat.”
“Jaffa Cakes?” asked three of the witches in unison.
Not wanting a witches strike on his hands, Van Helsing replied, “Maybe.”
With the repeated chant of “Jaffa Cake,” the zombieland rejects got to work.

Hangin' around

Under the gaze of an old tree they worked. Swinging their spades like pendulums they pit planted trees with names that cannot be spoken, and T planting others in defiance of Mouldy Gate’s resident evil. Willow stems were impaled into the dank earth where their roots would sprout and push through the soil like undead rabbits in a pet sematary (blame Steven King for the spelling). Tree after tree after tree found its final destination, and Van Helsing watched on as the work progressed. Gradually the light began to fail, but just in time the work was done; the long day of the dead (tired) had came to an end; a new woodland had been created, and a new store of future stakes to fight the fanged menace.

The shuffling mob shuffled and groaned, mostly about their backs. One, slowly stepped forward and lifted a hand, not one of her own but it would do, “Jaffa cake?” she croaked.
The Professor stepped back slowly. “Errm… I’ve got Double Death By Chocolate Cake and a Victoria Sandwich…”
“JAFFA CAKE!!!!” the mob screamed and shambled forward.
“Time for the pub,” uttered Van Helsing and turned to run, but his Burberry coat snagged on a branch of the wicked old tree and the hoard fell on him in their hunger.

The following morning. The sun rose on a peaceful wood. The pale dawn light slanted through the misty air, sparkling on golden, dew covered leaves. Deer wandered between the newly planted saplings, they sniffed at the young trees but left them be, this crop was not for eating. Turning, they quietly walked away leaving not a mark on the earth to show that they were ever there. As they padded gently by they passed beneath a raven perched in the branches of a gnarled old tree…
..and Van Helsing’s empty coat swinging in the breeze.

And the raven said, “Nevermore.”


Respectfully dedicated to BCV’s Van Helsing

All characters in this post are ‘entirely’ imaginary and any similarity between them and any persons living or undead is entirely ‘co-incidental’. No zombies or vampires were injured and Van Helsing eventually got his coat back. Many thanks to Banana Enterprises and the Rock Hall Volunteers for their involvement and to BCV’s cast of thousands for dressing up for the occasion. As usual thanks to Rick, Tom, and Caroline for their continued and outstanding leadership. Extra thanks to Jane, Sheena, and Lynn for cakes. Other work included cutting up old tree branches and making a dead hedge.

Dunscar Woods: Trees A Crowd

16th October 2022 – Tree thinning, Dunscar Woods, Egerton

A walk in the woods
A walk in the woods

Dunscar Wood is a new woodland near Egerton, Bolton. The wood occupies 5.7 hectares of what was formerly green fields which were bought by the Woodland Trust in 1998 as part of their millennial Woodlands on Your Doorstep project. Old maps do show a small patch of woods in the area but not of any great size or significance.

The Dunscar Wood Management plan says that in 1999 wood was planted with a mix of sessile oak, ash, birch, cherry, rowan, aspen, holly, alder, hawthorn, blackthorn and goat willow. Mature sycamore is also present and is thought to be a remnant of previous field boundaries.

Pedunculate Oak
Pedunculate Oak
Birch
Birch

New woodlands such as this are often planted quite densely with new stock, with 2 to 3 metres between each tree. Although there is always some loss through animal grazing, disease such as ash die back, and climate and weather conditions, the trees take up more room as they grow and need to be thinned out. Which is what we were doing on this task.

The Woodland Trust is thinning trees, not just to reduce the numbers, but to improve the structure of the woodland as part of the management plan for the site. One of the problems of planting lots of trees at once is the lack of age structure, hence the mix of long lived trees such as oak and short life-spanned species such as birch. The Woodland Trust envisages that over the next 80 years the short lived species will die off and provide standing deadwood and fallen logs which will benefit a range of bird and invertebrate species improving biodiversity in an area of Bolton with limited tree cover and species mix. Natural regeneration should make the new woodland self sustaining; gaps in the canopy should encourage the growth of woodland understorey.

The day before the task many of the larger trees that had been marked for felling were taken down by chainsaw, leaving Sunday’s group the task of cutting up and making into habitat piles and log stacks. The day was also a good opertunity to train some of the younger members how to fell trees safely and correct tool use.

Thanks to the Woodland Trust for letting us work here, Tom, Caroline, and Rick for putting it together, and the 21 (or so) volunteers for coming out. More woodland task write ups can be found under the Woodland category.

Ousel’s Nest Quarry: Flower Power

Meadow Management, Sunday, 4th September 2022

Ousel’s Nest Quarry Local Nature Reserve, Turton, is a site we have been working at since 2014. The site, which is managed jointly by BCV and The Wildlife Trust, has hedges, trees, ponds and the largest wildflower meadows we have ever worked on, today we are working on one of those meadows.

Species-rich meadows and grasslands have declined by 7.5 million acres (3.03 million hectares) since the 1930’s, only 2% of the meadows that existed at that time exist today and of those 75% are small, fragmented areas. The decline began during World War 2 when 6 million acres were ploughed under to provide food for Britain’s beleaguered population, but after the war that destruction continued as the requirement for housing and industrial development grew. Today these developments still encroach on greenbelt land; only 1% of land in the UK now support species-rich grassland.

Meadows are the cornerstone of our green and pleasant land, an intrinsic part of the UK’s natural and cultural heritage. Meadows provide habitat for wildflowers, bees, butterflies, moths, and many other insects, also spiders, small mammals, birds, reptiles and bats. Meadows can also act as carbon sinks and flood defences.

Common Frog
Common Frog

Wildflower grasslands do have some protection, mostly if they have been designated as a Site of Special Scientific Interest or as a Local Nature Reserve, but many won’t have this level of protection or are not properly managed leaving them at risk of being lost.

While Bolton’s meadows don’t have the range of species as chalk grasslands there’s still plenty we can do to improve what we have. Today we were mowing the grass, now that the flowers have died off, and removing it to the edges of the site. Raking up the mown grass stops the build up of nutrient in the soil, wildflowers thrive in a low nutrient environment while grasses prefer more fertile soils. Mowing also helps to distribute seeds; at the moment the meadows have knapweed, scabious, at least one type of orchid, and yellow rattle to name a few, but we hope to improve this over time. Thanks to all involved and also to the Wildlife Trust collaborating with us on this project.

Other Posts about meadows can be found in the Meadows category.