A Year in the life of an environmental consultant – March 2017, Getting ready for spring.

glowing gang with litter

Volunteers from the Kentish Stour Countryside Partnership glow with pride at their morning’s work.

It’s been an incredibly busy month as we prepare for the start of the survey season. The month began with a survey of channels on Chislet marshes for the River Stour Internal Drainage Board. We spent a day plotting the extent of the invasive species parrot’s feather which has unfortunately found its way into the ditch system. If left untreated the plant will shade out our native flora, clog structures and block sunlight from the water which will de-oxygenate it and lead to a loss in aquatic invertebrates.

parrots feather in wademarsh autumn 2016

invasive parrot’s feather growing on Chislet Marshes

 

“This is a particularly difficult situation,” said Carol. “The plant has spread rapidly and colonised a large area of the marshes. It is entwined with marginal vegetation along ditches which are a water vole stronghold. The challenge is to find a way of removing the plant while acting sensitively towards other species.”

 

To deal with this challenge Carol has sought advice from the Environment Agency and Andrea Griffiths, Senior Partnership Officer at Medway Valley Countryside Partnership, who has extensive experience at dealing with invasive species.

 

“Partnership working is really useful for issues such as this as we can all draw on each other’s experience to achieve a good result.”

 

The plant was quite possibly unintentionally introduced to the waterways by a member of the public, who may have been tipping excess frog spawn from a garden pond. Unfortunately this has resulted in years of expensive work for others.

 

On a brighter note we are delighted with the progress of many of the farms we visited this month as part of our advisory work on breeding waders.

 

Farmers have really taken on board the advice given in the autumn and have performed miracles in making grassland wet in what has been a very dry year. Topping and improved grazing regimes has resulted in much better sward conditions and many farmers have signed up to the funding available from the North Kent Capital Grant Scheme, administered by Kent Wildlife Trust.

 

Now we are all keeping our fingers crossed for good weather conditions this spring so the hard work can produce tangible results in the form of more wader chicks successfully fledged in North Kent.

 

volunteers cleaning litter March 2017

volunteers removing litter from the channel.

Lastly we were delighted to work once again with volunteers from the Kentish Stour Countryside Partnership in order to improve a small, urban stream in Canterbury, managed by the River Stour Internal Drainage Board. This rather sad little channel was full of litter, carelessly thrown by passing motorists and had become dark and shady in some sections and overly managed by neighbouring business’s in others.

 

Over two days the volunteers cleared around forty bags of litter from the channel, cut back overhanging trees and planted 100 colourful wetland plants outside the Mercedes Garage on Sturry Road. Many thanks to Mercedes for providing drinks and sweets. Serco for removing the litter but mostly to the excellent volunteers who it is always a joy to work with.

 

Rare plant found in Kent

Working in conjunction with Kent Botanical Recording Group is helping to conserve some of the rare flora of Kent’s waterways. Read the article below.

sue-and-josh-looking-at-plants

Sue Buckingham of Kent Botanical Recording Group helps with plant i.d. during a survey.

A rare plant has been recorded on Supperton Dyke, a botanically rich channel that forms part of Preston Marshes SSSI. Kent Botanical Recording Group working in partnership with the River Stour Internal Drainage Board surveyed the channel, managed by the board in the summer of 2016 and found a hybrid of carex x prolixa, a type of tufted sedge previously recorded at only a handful of places in Britain.
Carol Donaldson, who has been biodiversity advisor to the River Stour Internal Drainage Board since 2010 set up the partnership and uses the information gathered to tailor management, such as weed cutting and de-silting to each individual watercourse.
“Many rare plants are under recorded,” says Carol. “The IDB can help recording groups gain access to areas that would otherwise be out of reach. Working with the Kent Botanical Recording Group expands knowledge of Kent’s flora and helps the Drainage Board to manage the channels with the needs of these species in mind as well as protecting against flooding.”
Other scarce plants found in IDB channels during surveys last year include tubular water dropwort, hairlike pondweed and small pondweed, which was only the fifth record for this species in Kent.

A year in the life of an environmental consultant – August 2016

August 2016 – Messing about with our rivers

surveying

The sun shone throughout August as we continued with our work to re-survey rivers and drainage channels for the River Stour Internal Drainage Board. Repeating a survey we originally done six years ago shows the changes in land use and how this impacts on our waterways.

The loss of many grazing meadows is particularly a cause for concern as grazing allows a rich diversity of plant life to flourish and creates a tangled fringe of vegetation which provides a microclimate for insects. cattle grazing ditch

We have found that some of the meadows which were originally grazed by cattle have now become unused. Development companies have bought up land on the edge of towns and villages and leave these fields ungrazed while they attempt to get planning permission.

With the cessation of grazing, plants such as tubular water dropwort have become outcompeted by more rigorous species such as common reed and banks become dominated by thistles. In other fields a change from grazing to arable has resulted in more fertiliser use, which has caused nitrate levels to rise in ditches leading to an acceleration in weed growth.

Throughout the coming months we hope to work with landowners to look at ways of reducing run off and improving rivers for wildlife.

Cutting a river channel by hand

Cutting a river channel by hand

This month we have also been working with Rhino Plant, the River Stour Internal Drainage Board’s contractor as they begin the annual weed cutting of channels. Where access for machines is too difficult the rivers are cut by hand with scythes. The guys involved in this work have to have plenty of strength and stamina to undertake the physical demands of cutting and hauling the weed onto the banks.

Our work involves advising on Biosecurity to avoid the spread of crayfish plague which can be transferred from introduced signal crayfish to our native white clawed crayfish with devastating affect. We encourage contractors to check clean and dry their equipment and spray with a iodine solution to prevent disease spread.

white clawed crayfish

white clawed crayfish

We also look at ways of using the weedcut to create meanders and improve the flow of rivers, creating diversity in the channel which allows aquatic insects to thrive and fish to spawn.

Restoring the health and vitality of our rivers will prevent flooding and provide clean water as well as allowing people in towns to enjoy a therapeutic slice of the natural world.

 

A Year in the Life of an Environmental Consultant – July 2016

July 2016 – Working in partnership

Carol and Sue Buckingham examine divided sedge

Carol and Sue Buckingham examine divided sedge

July began with an excellent day of survey work alongside County Recorder, Sue Buckingham on the Ash Levels, to the East of Canterbury in Kent. The Ash Level Feed Dyke is one of the most botanically rich drainage dykes managed by the River Stour Internal Drainage Board and therefore it is important to get management right to ensure that rare plants can flourish. Carol Donaldson surveyed the watercourse in 2010 and was keen to return to see how changes in management had affected the channel. Sue’s expert knowledge helped to identify a range of uncommon plants such as divided sedge, rootless duckweed and tubular water dropwort.

tubular water dropwort

Carol and Sue Buckingham examine divided sedge

Carol J Donaldson Associates have worked hard to forge links with other conservation organisations and submit all records to the British Trust for Ornithology and Kent and Medway Biological Record Centre. “Working with Sue Buckingham and Kent Field Club is good for everyone.” said Carol. “The Internal Drainage Board benefit from specialist recording skills and the recorders get contact with landowners and access to areas of land away from public rights of way.” This mutually beneficial partnership allowed Kent Field Club to survey another IDB channel in July and discover several plants of tufted sedge (Carex elata) which had not previously been recorded in this area.

 

OLYMPUS DIGITAL CAMERA

bird ringer and kestrel copyright Ralph Connolly

Another mutually beneficial partnership has been formed with Kentish Stour Countryside Partnership. We volunteered our time in July to help with the barn owl ringing programme , visiting some of the many boxes installed by the partnership across East Kent. The day provided an insight into the life and death game sometimes played out unseen. We were amazed to discover two barn owls feeding on the remains of recently predated kestrel chicks. It was an extraordinary example of the food chain in action. Adult kestrels are feisty birds and the predated chicks were almost full grown. We can only speculate that this was a chance encounter where two barn owls had investigated the box and happened upon the chicks while the parent was away hunting.

presentation for Rhino Plant

Finally this month we conducted a training day for Rhino Plant operators on behalf of the River Stour Internal Drainage Board. The day was designed to give the operators who manage the drainage channels an insight into the survey work conducted on the marshes and an understanding of why decisions are made to change the way the ditches are cut and de-silted. It was an opportunity for both sides to learn about each others roles in maintaining the channels and work together towards getting a good balance between the needs of drainage and the needs of wildlife

A Year in the Life of an Environmental Consultant – June 2016

June 2016 – And the rain just kept on falling

surveying birds on Stoke Marshes during a break in the weather

surveying birds on Stoke Marshes during a break in the weather

In June it felt as if the rain would never stop as we battled to complete this year’s breeding wader survey, dodging showers and driving vehicles across sodden marshland fields.

The weather has hampered efforts to create ideal conditions for birds such as lapwing. A warm winter saw grass continue to grow and landowners struggle to create the short sward with tussocks that encourages birds to breed, This coupled with a cold early spring and rain late in the breeding season has meant that it has been a difficult year for wet grassland birds. Despite all of this, numbers of fledged birds were up on last year and it was fantastic to see that many farmers with breeding wader environmental stewardship options had taken on board the advice given during the autumn and that overall land was in better condition.

Rills such as this one near Conyer provide good habitat for breeding waders

Rills such as this one near Conyer provide good habitat for breeding waders

A new North Kent Marshes Capital Grants Scheme, administered by Kent Wildlife Trust, is a welcome investment and should help farmers have better control of water and the opportunity to create new scrapes and rills which will encourage more birds to breed. The RSPB, who oversee this work in partnership with Natural England, are pleased with the progress that has been made so far and we all look forward to seeing numbers of fledged chicks increase next season.

In June we were delighted to receive the news that the River Stour (Kent) Internal Drainage Board had voted to continued to work with Carol J Donaldson Associates and implement a plan of future work which we proposed to the board last year. This expanded programme will see us continue to survey drainage ditches across the catchment and advise on management but additionally will allow us to work with farmers to tackle problems such as diffuse pollution and soil run off as well as work alongside IDB staff to create a programme of enhancements to channels which will improve their value for wildlife and reduce flood risk.

We will also be working closely with the Environment Agency on joint initiatives to manage and enhance main river channels. To begin this work we undertook a water vole survey on the Sarre Penn, a small channel near Chislet outside of Canterbury. Following new guidelines issued by Natural England for water vole displacement we will return to this channel later in the year to conduct a second survey before deciding on appropriate enhancements.

water vole surveys are best conducted from within the channel.

water vole surveys are best conducted from within the channel.