What Katie did next

Katie Pownall – Conservation Research Student

My name is Katie Pownall and I am currently working at the North York Moors National Park for my year in industry, before heading back to the University of York to complete my biology degree next autumn. So many people have told me how valuable a year in industry can be for future employment prospects, and I feel very lucky to be able to spend my year with such an inspiring organisation. I hope to gain skills and knowledge from this placement that will allow me to pursue a career in ecology when I have graduated. What other job would involve me doing some of the things I’ve already had the chance to do so far?

Reptile monitoring at Sutton Bank…

Four of us travelled to Sutton Bank Visitor Centre and walked round existing paths on the heathland area there to locate the mats previously placed on the ground to act as attractive refuges for reptiles. We were looking for three particular species – Adders, Slow worms and Common lizards, all of which are protected by law in the UK. The ongoing monitoring was to provide evidence to consider as part of a planning application for a car park extension.

Reptile monitoring at Sutton Bank Visitor Centre - September 2017. Copyright NYMNPA.

After carefully looking under about a third of the mats and having had no luck, we decided to wait a little to allow the sun to heat up the mats a bit, which would encourage the cold blooded reptiles to rest there in order to warm up. When we continued we had more luck, finding some Common lizards as well as some Common toads. Unfortunately we did not come across any slow worms or adders, nevertheless we were pleased with what we had found, and a Fox moth caterpillar and a vole or two added even more excitement to the day!

Water vole surveying at Eller Beck…

The next day I joined the search for Water voles, or at least for signs that they are living in the area around Eller Beck, Fylingdales. Water Vole populations have suffered in the UK due to habitat loss as a result of agricultural intensification. More significantly populations have come under threat from the American mink as a short lived mink fur industry in the 1960s/1970s declined and mink were released into a wild without natural predators. Between 2004 and 2007 the UK’s Water Vole numbers decreased by around a fifth. In many areas mink have wiped out water voles completely; the remnant populations hang on in less than optimal habitats for Water voles but where mink find it very difficult to survive – upland areas such as Eller Beck and urbanised areas such as Burdyke in York. The fragility of the populations are why surveys to ensure they’re surviving in the North York Moors are so important.

Having donned our wellies and waterproofs we started trying to make our way over the rough terrain of a former plantation to find the beck. The ground was very tricky to move across, and we soon found multiple smaller streams running across the landscape by putting our foot down in the wrong place! Eventually we found the actual water channel that we were going to survey and started searching for clues that Water voles had been there. We were looking for latrines (piles of water vole droppings that look like dark green or brown tic-tacs!), grass that had been chewed and cut at a 45° angle, and Eller Beck - Water vole latrine with cut grass. Copyright NYMNPA.Water vole burrows along the side of the bank (which should have a clean opening with a diameter of 4-8 cm). After carefully treading along the banks of the beck we came across several latrines, some cut grass and potentially one or two burrows. This was encouraging since it proved that Water voles were still living in the area. Also, we didn’t find any evidence of mink in the same area, which is great news.

As the day progressed we found that some channels where signs of Water voles had been recorded in the past now seemed less suitable since the vegetation on the banks was particularly overgrown and so latrines and burrows could be less easily formed here. Water voles may still have been using these channels, but possibly just not living in them.

Eller Beck - Water vole burrows. Copyright NYMNPA.

Just after lunch we were surprised by an individual who had been lying low in the grass and which we accidentally startled. After not seeing one the day before whilst doing the reptile surveying, I was delighted to see my first Adder! The excitement of this experience more than made up for having a welly full of water all day.

Eller Beck - Adder. Copyright NYMNPA.

Plantation on Ancient Woodland Sites investigations…

As part of the This Exploited Land of Iron Landscape Partnership Scheme, PAWS surveys are being undertaken to look for opportunities to conserve remaining ancient woodland features. The Ingleby Plantation was previously planted on the site of what might have been ancient woodland, so our job was to survey the area to identify any trees that we thought were over 60 years old, and would therefore have been present before the plantation. We recorded the level of threat to the amount of standing and lying deadwood, which is such a great habitat for invertebrates and fungi, and to the remaining ground flora.

Ingleby Plantation - stream that ran through the site, with stones from old retaining wall. Copyright NYMNPA.Ingleby Plantation - dead wood placed in piles after selective felling. Copyright NYMNPA.Ingleby Plantation - Dead Moll's Fingers fungus on lying dead wood. Copyright NYMNPA.

We considered what changes could be made to the area to reduce these levels of threat. Where it seemed like there was little succession of ground flora some thinning of the trees preventing light from reaching the ground would help. Tree felling in a ‘halo’ around older, more vulnerable trees would help them to grow and stay healthy. Ring barking some trees – cutting off the nutrient supply to the tree – would create more standing dead wood where there is a lack of it.

This Exploited Land of Iron logos

Practical conservation work…

I joined a group of National Park conservation volunteers to clear an area of scrub near Rievaulx to encourage wild flowers to grow and spread next spring in a site of potential species rich grassland. To prevent the scrubland plants such as bracken and bramble from taking over the site again before the wild flowers get a chance to establish we had to remove all the cuttings from the area so that they didn’t reintroduce their nutrients to the soil. Wild flowers should grow better than the scrubland plants on nutrient-poor soil.

This kind of outdoor work was what I had imagined I might be doing quite a bit of during my time with the National Park, and despite the couple of downpours we had, it was good fun, and we all felt a huge amount of satisfaction once the job was done!

National Park conservation volunteers clearly scrub. Copyright NYMNPA.

As the new Conservation Research Student I sarted my new job not knowing what the next week would hold, never mind the next year! I have not been disappointed so far, as so many opportunities to go out on site and get involved in a wide range of projects have been presented to me, and I am keen to gain as much experience as I can from them.

Conservation recruits

Abi Duffy – Conservation Trainee and Sam Newton – Natural Heritage Trainee

Abi Duffy, Conservation Trainee. Copyright NYMNPA.I’m Abi Duffy, and I have recently started as a Conservation Trainee. I graduated from the University of Liverpool with a degree in Geography in July 2016 and since then I have been working towards gaining employment within the conservation sector. I am really interested in developing my knowledge and experience in this two year position with the National Park.

Sam Newton, Natural Heritage Trainee. Copyright NYMNPA.My name is Samuel Newton and I have started in the position of Natural Heritage Trainee with the National Lottery funded This Exploited Land of Iron Landscape Partnership Scheme. I have always been interested in the environment, leading to my graduation from Newcastle University with a degree in Ecology earlier this year. I am keen to use this opportunity to gain as much experience as possible of working in conservation.

Our first two months have been both varied and interesting as we’ve been contributing to a wide range of projects. We’ve taken advantage of the end of summer to be out in the field most days surveying.

Water vole surveying

One particularly memorable day was water vole survey training, for which we headed up to Fylingdales. This surveying entails walking a stretch of stream looking for signs of Water vole (Arvicola amphibious). The most obvious signs are droppings, which are ‘tic tac’ shaped and tend to be green, and are used for territory marking. Where droppings are flattened and more have been deposited on top this creates a ‘latrine’. We also looked for piles of nibbled grass, with a 45° cut angle at the end – characteristic of voles, as well as for burrows and footprints.

The training links in with our Water vole project which is aiming to secure the few remaining populations of Water vole within the North York Moors. The animals have North York Moors Water Vole. Copyright Elspeth Ingleby, NYMNPA.suffered from habitat loss and also the spread of invasive American mink. I (Sam) have been mapping water vole and mink survey results, mostly collected by our dedicated group of Water vole survey volunteers. These records create a base from which management of habitats and also mink can be carried out.

Botanical Surveying

We have been visiting species rich grasslands across the North York Moors, with a range of different underlying ecological conditions. By surveying the plant species and their abundance on these sites we can try and ensure management fits the individuality of each one, and that certain species are not being lost or becoming dominant to the detriment of others. Our Linking Landscapes volunteers also survey grassland within the National Park each summer; many volunteers survey the same site each year which helps identify changes. The volunteers send in their results to us for analysis.

Some of the interesting and beautiful flowers we have seen so far include Eyebright (Euphrasia officinalis), Common Spotted Orchid (Dactylorhiza fuchsia), Harebell (Campanula rotundifolia) and Fairy Flax (Linum catharticum). We also joined in with the Conservation Volunteers cutting some of these grassland sites where they’re not grazed and importantly raking off the cuttings to stop the grasslands becoming too nutrient rich. Nan Sykes’ book ‘Wild Flowers of North East Yorkshire’ has proved invaluable in helping improve our botanical ID skills.

Harebell. Copyright Sam Newton, NYMNPA.

MoorFest

As part of National Parks Week back in August, I (Abi) got involved with a MoorFest event at our Sutton Bank National Park Centre letting people know about the species rich grassland resource within the North York Moors. We had many families chatting to us about wildflowers and asking us questions about the grassland. This was a good way to help communicate to the wider public the work that farmers and the National Park do together to conserve and enhance grassland sites.

Moonwort at Sutton Bank. Copyright Ami Walker, NYMNPA.The triangular meadow out of the front of the Sutton Bank National Park Centre is a great example of such grassland. Back in June, before beginning in our roles, we both took part in a Volunteer training day there; we found the rare fern Moonwort and several Common Spotted Orchids among a vast array of species. This site is a good quality species rich grassland in top condition, and with continuing management we hope to keep it that way.

Triangle Meadow, Sutton Bank - Common spotted orchid at the forefront. Copyright Ami Walker, NYMNPA.

West Arnecliff Woodland Survey

In early August we were given the opportunity to follow up on research work done by the previous Research Student at the National Park, Sam Witham. Sam had been investigating the impact of deer browsing in woodland by constructing small exclusion enclosures, in order to establish whether these allowed greater natural regeneration. This is part of the National Park’s long term PAWS restoration project. Non-native conifers had already been removed from this site at West Arnecliff and the continuing research is to help understand how best to assist the regeneration of the Ancient Woodland features and habitat.

Japanese knotweed surveying

Something else we have been involved with is the River Esk project – in particular surveying stretches of the river for Japanese knotweed (Fallopia japonica). This destructive invasive has the potential to spread rapidly along the river banks generating sedimentation and damaging the river environment. There has been control work over the last decade but it’s important to keep on top of the plant and where it is coming back it needs to be treated as soon as possible to prevent a new outbreak. So the surveying is important and has become a bit of a right of passage for new members of the Conservation Department.

Conclusion

So far we have really enjoyed the first two months in our new roles We are looking forward to going out into the field even more and meeting and working with the land owners and land managers who shape the landscape of the North York Moors.

It is great to have the opportunity to understand and contribute to the work the National Park is doing, while learning about working in conservation at the same time.

Abi, Sam and Bernadline surveying in Rosedale. Copyright Elspeth Ingleby, NYMNPA.

Planting for the future

Alasdair Fagan – Woodland Creation Officer

I believe that most people like the idea of trees being planted – as long as they are in the ‘right place’. Small, negligible seeds unfurling to create little, delicate saplings growing on and upwards into woody giants that dominate a landscape.

But why would we purposefully plant trees?  Here are some of the benefits that tree planting/woodland creation can provide.

Habitat

Each individual tree provides a habitats. Wooded habitats are some of the most diverse habitats in England; with many birds, mammals, insects and plants specialising in woodland environments these habitats are critical for biodiversity. Creating even small areas of woodland has the potential to greatly increase the number of species in almost any landscape.
Lesser? redpoll (woodland/wetland bird). Copyright Liz Bassindale, Howardian Hills AONB.

Lesser? redpoll  – this RSPB Red status bird has suffered severe population declines in the UK. It relies on wet woodland species like birch and alder.

Connectivity

It is important to look at woodlands from a landscape scale. Connectivity is the word used to evaluate how connected/joined up otherwise isolated fragments of habitat are. It is always a big advantage for tree planting if it helps to connect existing woodland areas and so allows woodland species to move freely across the landscape.

Newly planted woodland near Skipster Hagg Woods. Copyright NYMNPA.

Newly planted woodland near Skipster Hagg Woods, Appleton le Moors. The word Hagg suggests the land here has long been wooded. This new planting is an extension of an existing native woodland, which should improve connectivity through the landscape.

Water quality and retention

It is now widely accepted that planting trees and woodlands has benefits for the management of water catchments. Woodland filters sediment and nutrient run off from the land if planted between the source and a watercourse, and so can greatly improve water quality. Also when trees are planted along a river catchment they can help to slow down the flooding effects of heavy rainfall events by increasing the porosity of the soil. Water is more readily absorbed into the soil, thanks to the roots of trees, before being released into water courses of the catchment.

Bank stabilisation

Just as trees can slow down the movement of water they can also minimise the movement of landforms. The roots of trees help bind and stabilise river banks and hill sides. Trees hold landforms together minimising erosion and the displacement of soil, the effects of which can in some cases be devastating.

Small scale riparian woodland planting. Copyright NYMNPA.

Small scale riparian woodland planting in the Esk Catchment. The opposite bank is slumping and loosing soil resource into the water. 

Shelter

Trees and woodland copses carefully located on a holding can provide useful shelter for livestock and gamebirds. It has been demonstrated that shelter provided by trees has resulted in significant reductions in cold, wet and windy weather lamb losses.
Highland Cattle on Levisham Estate. Copyright Ami Walker, NYMNPA.

Highland Cattle on Levisham Estate taking advantage of the the woodland cover on a hot day.

Climate Change

One of the causes of climate change is the release of greenhouse gases (e.g. carbon dioxide) into the earth’s atmosphere trapping heat. Trees produce energy to live and grow by using sunlight to convert water and carbon dioxide through photosynthesis; a process which produces oxygen. So trees are using up Carbon Dioxide, storing carbon and generating essential oxygen.

Amenity 

As well as providing a land management tool, the presence of trees and woodlands can have positive impacts on the health and wellbeing of people. Trees and woodland are intrinsic to many landscapes, particularly so in the North York Moors. Woodlands provide amenity value as local cultural assets that can last for generations if looked after properly. Imagine the feeling of personal achievement in planting a new woodland that will grow and mature into the future, making a living mark on an evolving landscape beyond the constraints of a human lifetime.

View from Chimney Bank down into Rosedale. Copyright NYMNPA.

View from Chimney Bank down into Rosedale. Trees in the right place can really compliment the landscape and add amenity value from notable viewpoints.

The National Park Authority is looking for landowners and partners to create new woodland across the North York Moors. Funding is available for deciduous woodland planting projects of 1 hectare (2.5 acres) and above; the funding can cover the total costs of planting and establishment. If you are interested and would like more information please contact me by email or ring me on 01439 772700.

A to Z: a preponderance of Ps

P

PAWS

Where woodland has existed for at least the last 400 years (c. 1600 AD) it provides an ‘ancient semi-natural woodland’ habitat. Around 4% of the North York Moors National Park is classed as ‘Ancient Woodland’ according to Natural England’s Ancient Woodland Inventory. In some places woodland will have existed for much longer.

As well as the removal of woodland, particularly over the last century, there is another slower acting less visible threat to the continuation of ancient semi-natural woodland. This is where ancient woodlands have been planted up with trees such as conifers to create plantation forestry. These sites are still recorded on the Ancient Woodland Inventory, and categorized as ‘Plantations on Ancient Woodland Sites’ (PAWS). This conversion leads to a detrimental decay of the ecological value of the woodland habitat from the shading caused by evergreen conifers, the acidic modification of soils, and potentially the management of the woodland to ensure maximum timber production. As well as the gradual decline of woodland flora, mycorrhizal fungi and native tree species; historic features within the woodland and the landscape value of the ancient woodland are also at risk.

Example of PAWS (Plantation on Ancient Woodland Sites) with bare slopes. Copyright NYMNPA.

Some habitats can be created/re-created, but when Ancient Woodland is lost it’s gone for generations. However restoration can be possible if it’s not too late. PAWS restoration i.e. management to maintain/enhance the ancient semi-natural woodland habitat elements, comes in many forms and scales from the removal of non-native invasive species like Rhododendron, to the replacement of conifers with predominantly native trees. Like most things to do with woodland, restoration takes time. Partial or limited restoration is often worthwhile, and maintaining the management and value of a woodland is often more beneficial than restoring but then abandoning it. The National Park Authority is keen to work with owners of PAWS to explore what might be done to conserve this significant element of our local natural heritage.

Small scale conifer removal and planting with native species on PAWS slopes. Copyright NYMNPA.

 Pecten Seam

The ‘Pecten Seam’ is part of the geological Cleveland Ironstone Formation made up of a number of ironstone seams formed one on top of the other during the Early Jurassic period (c. 199 to c. 175 million years ago). The ironstone seams are made up of shales and sideritic (iron carbonate)/chamosatic (silicate of iron) ironstone which settled at the bottom of the shallow sea across the area which now includes the North York Moors (see also Polyhalite below). The seam is called Pecten after the numerous animal fossils found within it from the Pecten genus (large scallops).

Large scallop shell (Genus - Pecten) from http://www.bgs.ac.uk

The Pecten Seam outcrops around Grosmont in Eskdale and is more important in local history for what it suggested rather than what it delivered. It was the identification of the ironstone in the ‘Pecten Seam’ during the construction of the Whitby and Pickering Railway in 1836 which led to the outbreak of ironstone mining during the nineteenth and twentieth centuries in the North York Moors and Cleveland Hills (see This Exploited Land of Iron Landscape Partnership Scheme). The Pecten Seam was the second ironstone seam down (second latest) and quickly turned out to be of a poor quality, so it was the ‘Main Seam’ on top (the latest) which was largely exploited by the local ironstone industry as it was higher up and so easier to access, it contained more ore, and it was thicker than the other seams making it more cost effective to mine.

On top of the main ironstone seams were further sedimentary layers of shale containing jet, alum, coal, and further ironstone all of which have been exploited at one time or another in the North York Moors.

This Exploited Land of Iron LPS logos

Picturesque

The word picturesque was first used in the latter half of the 18th century to describe a scene worthy of being painted. It has since come to mean traditional and maybe a bit twee, but originally it meant an image that would stir the sensibilities of every right feeling man (and woman) because of its aesthetics and sublimity. The ‘natural’ and dramatic were in fashion and to not be able to appreciate the beautiful dread inspired by a landscape or view was a poor reflection on a gentleman’s character. The North York Moors did not have the grandeur of the Lake District’s mountains or the awe of the glaciers of the Alps, but it was not without its picturesque attractions.

JMW Turner engraved Rievaulx Abbey in 1836 from sketches he made in 1812. The view contains mediaeval romantic ruins (the might of nature overwhelming the vanities of man), wild woods and Italianate steep hills, a glowering sky and rustic peasants: all highly ‘picturesque’. The ruins of Rievaulx Abbey belonged at the time to Duncombe Park, the Estate had both a ruined abbey and a ruined castle (Helmsley) with which to create its own ‘natural’ picturesque landscape for the pleasure and wonder of the Duncombe family and their friends.

Rievaulx Abbey engraved 1836 Joseph Mallord William Turner 1775-1851 Bequeathed by Travers Buxton 1945

Pignut (Conopodium majus)

Pignut is a member of the carrot family, along with parsnip, fennel, parsley and less ‘benign’ plants such as hemlock and giant hogweed. Like some other members of the carrot family it has an edible tuber. The small tubers have been eaten by pigs hence its most common name (another name – St Anthony’s Nut – is because St Anthony is the patron saint of many many things including swine herders), and also by people who like to forage. Obviously never ever eat anything unless you are absolutely definitely sure what it is, and don’t dig on other people’s land without their permission.

Pignut is a short plant which flowers in early summer with tiny delicate white umbels (flat topped flowers on stalks like umbrella spokes coming from a single stem) that together resemble lace. It’s a tough little thing containing both male and female parts and therefore is self-fertile relying on pollinators like hoverflies, and also moths. It is an indicator of grassland/woodland pasture and can be found on road verges and alongside hedges where fragments of old pasture and woodland survive.

Pignut - from http://www.seasonalwildflowers.com/pignut.html

 A Particular Pigsty

Usually people probably wouldn’t want to go on holiday to a pigsty, however there is a particular listed building in the North York Moors that isn’t many peoples’ idea of a home for pigs. Described in the listing description as “a large dwelling for pigs” this pigsty was built in the late nineteenth or early twentieth century by John Warren Barry – a Whitby shipbuilder and ship owner who was the owner of Fyling Hall near Robin Hood’s Bay. He seems to have been inspired by the classical architecture he came across on his travels around the Mediterranean as the pigsty is built in the style of a Greek temple with timber pediments at both ends and a portico of six timber columns with Ionic capitals in its south side. It contained two small sties, and was intended to provide accommodation for two pigs, whose attendants were to be housed in a pair of neighbouring cottages. The pigs were apparently unimpressed and unappreciative of their sumptuous quarters.

In time, lacking any obvious practical use, the Pigsty fell into a poor state of repair. Luckily it was purchased by The Landmark Trust in the 1980s. The Landmark Trust aims to preserve remarkable buildings by providing them with new purpose. The pigsty has been restored, converted and extended for use as a holiday cottage. The extension is minimal which enables the principal building to remain the main focus and the conversion works have managed to maintain the original character. The Pigsty certainly adds to the diversity of the built conservation of the North York Moors.

The Pigsty, Robin Hood's Bay. Copyright The Landmark Trust.

It was apparently Mr Barry’s intention that the pigs should enjoy unrivalled views across Robin Hood’s Bay – a privilege that holiday-makers instead are fortunate to have today!

Primitive Methodists

In a number of villages and dales in the North York Moors as well as an established Church building there will be a Methodist Chapel building (sometimes known as a Wesleyan Methodist Chapel), and in some there also is, or was, a Primitive Methodist Chapel in close proximity.

View of the Rosedale Abbey Primitive Methodist Chapel, in close proximity to the Church of England church and churchyard. Copyright Rosedale History Society.

Methodism had made early in-roads in the North York Moors in the 18th century where the location of the area, out on a limb, provided a home for dissenting religion. The Primitive Methodist ‘connection’ splintered off from the Methodist Church at the beginning of the 19th century when the preachers William Clowes and Hugh Bourne were dismissed from the main congregation. Primitive Methodism was so called because its converts believed it was they who were following more strictly and truly in the footsteps of original Methodism and its founder John Wesley. One particular aspect of early Primitive Methodism was the holding of open air prayer meetings encouraging evangelical conversions, as the Wesleys had done in the century before. This was at a time when the meeting of ordinary people in groups, unsanctioned by Society and Authority, were considered a danger to the status quo.

‘On Sunday, July 30th [1820], he [William Clowes, one of two founders of the Primitive Methodist connection] conducted a camp-meeting [open air meeting] upon a depressed part of a mountain called Scarth Nick [near to Osmotherley]. About two thousand persons were supposed to be present. The Word preached was attended with much Divine power; the prayers of the people were very fervent, and many sinners were deeply impressed. Four or five persons were made happy in the love of God; one of whom, a farmer, was so overjoyed that he called upon the hills and dales, and every thing that had breath, to help him to praise God. He afterwards hastened home, and told his wife and servant what the Lord had done for his soul, and they also sought and found the salvation of God….He [Clowes] had invitations to Weathercote, and to Auterly [now Orterley] in Bilsdale [these two sites are still farmsteads], at both of which he preached with great effect, and many were brought to God. Many exciting scenes were witnessed during his missionary tour in this district, and a great awakening took place among the inhabitants, which we can not particularize’.
A History of the Primitive Methodist Connexion by John Petty, 1864.

The Primitive Methodists emphasized the role of the lay congregation rather than a clerical hierarchy and this included a sense of equality that allowed for women preachers. They valued simplicity in worship and believed that their Christianity demanded political engagement in the modern world. Primitive Methodism appealed particularly to the rural poor and the industrial immigrant labourers, to whom the promise of reward in heaven might have seemed like a longed for relief.

‘Come, ye sinners, poor and wretched,
Weak and wounded, sick and sore,
Jesus ready stands to save you,
Full of pity, love and power:
He is able,
He is willing; doubt no more’
The Primitive Methodist Hymnal, 1889

The Primitive Methodist Church in Britain reunited with the main Methodist Church in 1932.

Polyhalite

Polyhalite is a mineral lying deep (over 1,000 metres) under the North Sea and along the eastern edge of the National Park; it’s a type of Potash. It was formed over 260 million years ago as salts were deposited in a shallow sedimentary sea as it evaporated. Polyhalite specifically contains potassium, calcium, magnesium and sulphur; useful components in agriculture fertilizer.

Alongside the existing Cleveland Potash Mine at Boulby (ICL UK), over the next 5 years the new Woodsmith Mine (Sirius Minerals) is being constructed in the National Park to extract naturally formed polyhalite for commercial use. The new mine is expected to be operational by 2021 and whilst the development work is taking place, a whole range of compensatory and mitigation projects to enhance the natural and historic environment and to promote tourism in the wider area are being delivered. The first of these initial priority projects for this year include the upgrading of a 4km section of the Coast to Coast at Littlebeck and improvements to the Lyke Wake Walk, repairs and renovations to the Grade 1 listed Old St Stephen’s Church at Robin Hood’s Bay with The Churches Conservation Trust, and habitat restoration within Harwood Dale Forest.Old St Stephen's, Robin Hood's Bay. Copyright NYMNPA.

Previously on the North York Moors A to Z … A, B, C, D, E, F, G, H, I, J, K, L, M, N, O       

Attritional conservation

Seas of Green – UPDATE

Last September we reported on the installation of black plastic sheeting on a couple of ponds in Bilsdale with the aim of shading out the non-native invasive plant species – New Zealand pigmyweed Crassula helmsii – which was accidentally flourishing there. The idea was to give the plant a taste of its own medicine by depriving it of light.

By two months the pigmyweed was becoming etiolated – pale and weakened due to the loss of sunlight – indicting the sheeting was effecting growth.

Crassula helmsii two months after black plastic sheeting applied. Copyright NYMNPA.

The sheeting was left on the two ponds through the winter and spring, and a second survey was carried out this July. The sheeting has killed off 100% of the pigmyweed that was covered, however pigmyweed plants remain around the edges of the ponds, where it was difficult to install the sheeting due to the surrounding vegetation and irregular shape of the pond edges.

One of the ponds covered by the black plastic sheeting July 2017. Copyright NYMNPA.

Contrast between the remaining Crassula helmsii at the edge of teh pond and under where the sheeting where the plant is now dead, July 2017. Copyright NYMNPA.The National Park Authority’s southern Apprentice Team will be spraying off the pigmyweed round the edge with a herbicide. The sheeting will remain on the ponds until at least late autumn to try to finish off this invasive species once and for all in this location, allowing the biodiversity of the ponds to recover.

Other non-native invasive plant species

New Zealand pigmyweed is one of the most common non-native invasive plant species found in England, along with Common rhododendron Rhododendron ponticum, Himalayan balsam Impatiens glandulifera, Japanese knotweed Fallopia japonica, and Giant hogweed Heracleum mantegazzianum. They were all introduced into the UK as garden plants. All of these species are present in the North York Moors to some extent, and work continues to control these particular plant species, without natural competition and predators, that can have such a detrimental effect on the area’s habitats and water quality.

We’re grant aiding the removal of rhododendron from important Plantation on Ancient Woodland Sties (PAWS), to help let in the light and give native ground flora a better chance of survival. Rhododendron can harbour the Phytopthora ramorum pathogen which is a great threat to forest species such as larch.

Himalayan balsam can be pulled out/cut down by hand but this needs to be done before the seeds are setting (August/September) because one shake of a plant can release 1000s of seeds that can travel up to seven metres potentially creating 1000s of new plants. Repeatedly removing the plants from a location before they can seed over a number of years will eventually mean this annual plant no longer regenerates there.

Japanese knotweed is trickier to tackle because it needs to be treated by careful herbicide injection. Repeated treatment can kill the rhizome which is so effective at spreading. The accidental breaking up of live rhizomes can spread the plant expediently. Careful disposal is vital.

We’re currently making best use of four years of funding from Yorkshire Water to tackle Himalayan balsam and Japanese knotweed along the banks of the Rivers Esk, Rye, Seph and Seven, through whole catchments and sub-catchments starting at the top. Both species are particularly menacing to river habitats as they out compete evergreen native species and die back in the winter leaving banks bare and prone to erosion increasing the sediment loads in the water.

Giant hogweed isn’t quite so common as the other plants in this area. It can be dangerous to deal with because its sap can burn skin so it needs to be treated with care. It can be cut down or tackled with herbicides, but like all non-native invasive species repeat control will be necessary to achieve eradication at a site.

There are lots of initiatives now across the country to address the threat of these out of place species, it can sometimes seem overwhelming but concerted repeated local efforts can have an effect.

Bringing the vegetation back

Gareth Pedley – Wild Trout Trust

Back in June 2013 the Wild Trout Trust undertook an advisory visit for Glaisdale Angling Club on the River Esk, North Yorkshire. This was an interesting visit, identifying many of the common issues associated with livestock grazing and sandy soils on upland rivers leading to sedimentation. One specific issue was significant erosion on the outside of a particular sharp bend. This is exactly the type of issue that would have once been dealt with by hard engineering, often gabions or rip rap (rock armouring), for which there is already evidence of failed attempts. The Trust’s prescription here was to employ more sympathetic, natural bank protection measures that would actually enhance habitat in the area, rather than degrade it.

The use of brash revetment was considered, but the spatey nature of the river meant that there was a potential for further erosion from high water before any protection measures could be completed or take effect. So with this in mind, the recommendation was made to initially use a light touch, low cost approach that focused on fencing off a buffer strip along the bank to control the grazing (one of the main causal factors) and planting native tree species.

The tree and bank work was undertaken by 10 volunteers from Glaisdale Angling Club, in February 2014, coordinated by Simon Hirst of the North York Moors National Park Authority. In all, over 100 alder, 50 hazel and several hundred willow whips were planted, along with relocation of some of the overhanging bank turves onto bare areas of bank face.

As can be seen from the before and after photos from May 2015, fencing livestock away from the river bank has allowed large areas of the bank to become colonised by grass, the foliage and roots of which are already providing significant protection. The saplings and willow whips are now also well-established; the tree roots which will penetrate deeper into the ground and provide additional protection. If the fence is maintained, and livestock continue to be excluded, it can be expected that over the upcoming seasons the more stable bank will facilitate the colonisation of other herbaceous vegetation. This will increase the diversity of root structure within the bank and provide even greater consolidation. The roughness they provide will also aid natural colonisation with local trees and plants by trapping seeds and other propagules (agent of reproduction).

Although the bank is still not completely stabilised yet, and the technique is always initially susceptible to failure in very high flows, it is relatively low cost and provides a great demonstration of how removing the livestock grazing pressure can reduce erosion and stabilise river banks. If major floods do not destabilise the banks they will continue to consolidate and stabilise to natural levels. If major floods do cause further erosion in the future, there may be a case for undertaking a more formal brash revetment as well.

U P D A T E – July 2017

Simon Hirst – River Esk Project Officer

Kate (Catchment Partnership Officer) and I recently revisited the site with the Glaisdale Angling Club to assess the bank stabilisation work undertaken on this section of the River Esk back in February 2014. Three years later, the young alder, hazel and willow trees are flourishing, and woodrush has also successfully colonised the site naturally.

River Esk, sharp bend site - now (July 2017). Copyright NYMNPA.

We’re planning to carry out further work in winter 2019, which will involve hazel and willow laying, like you would with a hedge to provide horizontal structure. This work will further protect and stabilise the bank, and some of the stems will also be laid into the channel to provide in-channel cover for fish.

Recipes for meadows

Aside

Coming up this Saturday (1 July) is National Meadows Day.

Wildflower meadow in the Hole of Horcum. Copyright NYMNPA.

There is a partnership project called Save our Magnificent Meadows, led by Plantlife and largely funded by the Heritage Lottery Fund which promotes the importance of hay meadows and other species rich grassland types for the country’s natural and cultural heritage..We’re not one of the landscapes where the project is directly working but we have similar aims and objectives for North York Moors grasslands too. Save our Magnificent Meadows has a really useful Advice and Guidance resource which can help land managers work out what kind of grassland they have (e.g. acid grassland, neutral grassland, calcareous grassland, cornfield flowers), what type it currently is (e.g. improved, semi improved, unimproved) and then how best to manage it for conservation benefits. In the North York Moors we have a lot of improved grassland like most places, but we still have an amount of unimproved grassland and a bigger amount of semi improved grassland. Semi improved grassland – i.e. some characteristic species found in low frequency – can have great potential for biodiversity enhancement.

30,000 words on water quality

Rosie Nelson – Masters Student

Rosie, geared up for outdoor working - copyright NYMNPAI have finally finished my research masters. All that stands between me and the real world is corrections and actually printing a 30,000 (ish) word document. So did I actually achieve anything. Well I’d like to think so, but first up I’ll tell you a bit about what I did, and how I did it.

I spent six blissful months walking three beautiful watercourse catchments in the North York Moors – Toad Beck, Danby Beck and Great Fryup Beck which are all tributaries into the River Esk. Aside from sun kissed skin and being chased by sheep, dogs and cows, I somehow managed to collect what I was after – a lot of useful data. To establish the water quality of a river a variety of sampling techniques is required. My favourite was using a probe which measures dissolved oxygen, conductivity, pH, salinity, temperature and much much more. Imagine, dangling a very expensive cable off the side of a bridge and waiting in anticipation for the numbers on the screen to settle. I loved it. Although once or twice the probe did ricochet off rocks to produce an alarming sound.

As my data collection evolved, I also started to gather water samples to take back to the laboratory for COD, BOD, DOC, anion and cation analysis. You might think I’ve just put some letters together to appear clever, but they do actually stand for things:
– COD is chemical oxygen demand (amount of oxygen required to oxidise the organic matter in the solution);
– BOD is biochemical oxygen demand (amount of dissolved oxygen being used by aerobic microorganisms when decomposing the organic matter in the solution);
– DOC is dissolved organic carbon (amount of organic matter in the solution);
– An anion is a negatively charged ion, a cation is a positively charged ion, and an ion is an electrically charged atom.

So what did I actually find out in these three catchments? Well I analysed the spatial and temporal variations of a variety of water parameters. The significance of focusing on both spatial and temporal variations within a catchment is it can easily identify areas of point source pollution at a small scale, something which isn’t done often enough.

For this post I’m focusing on dissolved oxygen and conductivity. The very important key species Freshwater Pearl Mussels require dissolved oxygen levels between 90 – 110% (Oliver, 2000). Other aquatic life like fish can survive on much lower saturations of dissolved oxygen, as low as <30%. The graph below shows how dissolved oxygen (a vital parameter for ascertaining the health of a river) changes through the year. Changes in water levels and plant growth can have serious effects on the amount of dissolved oxygen available for organic and aquatic life. During the summer months, plants will become abundant in a river, thus using up more oxygen and depleting the overall amount of dissolved oxygen available in a river. Once rainfall increases in the autumn dissolved oxygen levels should be replenished. As you can see September 2016 was a particularly poor month for dissolved oxygen, with average levels as low as 80%. Similarly, August on Toad Beck was low as well with an average of 75% saturation. But aside from in September for all three watercourses, and in August for Toad Beck, the dissolved oxygen levels remained within or above the proposed dissolved oxygen threshold.

2016 Dissolved Organic Carbon data graph - copyright Rosie Nelson

Next up – conductivity. Conductivity is a measure of a watercourse’s ability to conduct electrical flow and is therefore related to the concentration of ions in a river. Particular aquatic species need higher or lower conductivity – the Freshwater Pearl Mussel likes a lower conductivity. There are variations between suggested thresholds for conductivity: Moorkens (2000) suggests it should be 65µs/cm, whilst Bauer (1988) suggests <70µs/cm and Oliver (2000) suggests <100µs/cm. So I chose the only logical way forward and used all three thresholds. Focusing again on the month of September 2016, I produced the map below.

2016 Conductivity levels map - copyright Rosie Nelson

This is where analysing data spatially comes into its element. First up, the circles represent sampling locations (every now and again samples were missed out say if there were a herd of cows approaching as I climbed the style into their field, needless to say my flight or fight response would always be flight as advised in the National Park Authority’s Risk Assessments). Using a traffic light system, green circles represent good conductivity levels. As you can see, September was a poor month for both dissolved oxygen and conductivity. What I found particularly interesting was the variations that could occur in a small watercourse like Danby Beck, where as tributary field drains entered the beck conductivity levels could spike or decrease dramatically; how fantastic!

So to round off I thought I’d quickly summarise my thesis’ findings. Water quality is good in the three catchments, but it’s not good enough for Freshwater Pearl Mussels, and that’s the gist of it. The work of the River Esk catchment officers at the National Park to address the issues is great, the water bodies are reaching and maintaining ‘good’ ecological status, unfortunately the Freshwater Pearl Mussels require pristine water conditions and ‘high’ ecological status. However the future direction is positive for the health and conservation of Freshwater Pearl Mussels. And I too am looking forward to the future; I shall be taking a few weeks off from being chased by animals and I can’t wait*.

 

 

 

 

* Editor’s note: Rosie didn’t get much time off – she’s gone off to pastures new and is now a Community (Water Quality) Modelling Project Officer at Thames21. We wish her all the best.

A to Z: a number of Ns and Os

N and O

NATRIX NATRIX

There are three native UK snake species*. Although Adders and Slow worms are common in the North York Moors, Grass snakes (Natrix natrix) aren’t. However they are found at at least one known site on the western edge of the National Park which makes them locally rare. They like rough grassland near to water and are known to swim (they’re also sometimes called Water snakes). Neither Grass snakes nor Slow worms are venomous, but Adders are.

Natrix natrix from www.herpetofauna.co.uk

All native snake species are protected. Please leave them alone and they should leave you alone.

*Actually, there are now four. The barred grass snake (Natrix helvetica) is now recognised as a species in its own right, with the Natrix natrix (as found occasionally in the North York Moors) now known as the eastern grass snake.

NETWORKS

What is a network? In ecological terms it is basically the infrastructure through which species and habitats survive and flourish. In our 2012 Management Plan we identified the key ecological networks that we wanted to consolidate and enhance. Following the Lawton Principles (More, Bigger, Better and Joined) we’re working to ensure these networks and the associated habitats and species not only survive but become more resilient and sustainable into the future.

So what does a network actually look like? When we talk about networks and connectivity (which we do quite a lot on this Blog) we mean all sorts of things corridors, connections, linkages and stepping stones which whilst contributing to the same ecological goal, might look very different on the ground. For example, the Rivers Rye and Esk are important riparian linear networks, winding their way through other interconnected patchwork woodland and farmland networks. Some networks might be important for their great trophic diversity whilst others are essential for the survival of a particularly rare species. Promoting one particular network over another may impact on different species in different ways. For example, some farmland waders such as lapwing tend to nest in open fields with a low or short structure and areas of bare ground. One posited reason for preferring these open and large fields is that Lapwing want a clear line of site to any potential danger approaching their nests. So then planting hedgerows, usually a positive way to increase network connectivity, through good lapwing territory may negatively impact on this wader species. Similarly, native broadleaf woodland planting is usually something to be encouraged but not if it would break up a precious species-rich grassland network and adversely impact upon the important species that rely on it.

The North York Moors hosts a diversity of plants, animals and habitats. The challenge we’re grappling with is a putting together a jigsaw of different habitats and species; connecting up networks at varying spatial levels all within a framework of unpredictable future land use and climate change. It’s as difficult as it sounds.

And talking of different types of network, the National Park Authority is keen to foster a network of land managers in the North York Moors so we can share information and opportunities, and enable the North York Moors area to be a sounding board for new ideas in relation to land management and land use. If you are a local land manager and you’d be interesting in joining in – please contact us.

NEWTONDALE

Newtondale is a narrow valley cutting through the southern central moorland. It is the narrowness and steepness of Newtondale and its resulting inaccessibility which makes this dale unusual in the North York Moors which is renowned for its open landscapes. It contains important SSSI (Site of Special Scientific Interest) successional habitats including wet woodland, flush communities and species rich grassland.

Newtondale - copyright NYMNPA

Newtondale was formed in the last Ice Age at least partly as subaerial overflow from the glacial lake in Eskdale to the north of the higher ground drained south into the glacial lake in the Vale of Pickering. The two lakes formed from meltwaters dammed in the west by the ice sheet in the Vale of York and in the east by the massive North Sea ice sheet. Recently it has been suggested that Newtondale existed already at this time and the overflow scoured and deepened an already existing feature.

This naturally formed cutting was exploited by the always practical George Stephenson when he built the Pickering to Whitby railway (opened 1836). The railway connected up the northern and southern parts of the North York Moors divided by the large central area of high moorland. For centuries the only connections had being inhospitable and difficult trods and tracks. The railway line is still used – by the North Yorkshire Moors Railway, and Newtondale has its own request stop.

NICHOLAS POSTGATE

Nicholas Postgate was born in or near to Egton Bridge in Eskdale at the end of the 16th century. He was a Catholic. Although Anglican Protestantism was the official state religion by this time, there was much insecurity and uncertainty and an international element was attached to Roman Catholicism that meant not following the protestant religion as prescribed by the state implied potential treachery. In the first half of the 17th century refusing to attend Anglican Protestant services was illegal, this recusancy marked people out as non-compliant and dangerous .

Nicholas Postgate decided to be an active Catholic when passivity was definitely safer. He went to a seminary in France where he was ordained a priest and returned to England where after ministering to catholic gentry families he finally came back to Eskdale in the 1660s to practice his faith and serve persevering Catholics in the wider North York Moors travelling from house to house. The situation of the North York Moors, on the edge and out of the way, has allowed non conformist religions to survive and flourish over the centuries.

Father Postgate survived the Civil War and Commonwealth periods in England, but the Restoration re-ignited the fear of Catholicism which blew up into the Popish Plot in 1678. The plot didn’t need much substance, it suggested that internationalist Catholics were conspiring to murder the King and destroy the State just as many Protestants had long feared and gave credence to some not very latent animosity towards Catholicism and Catholics. There followed a short lived period of persecution and settling of scores.

Father Postgate was arrested in Littlebeck near Whitby, reportedly carrying out a christening. He was charged with being a Catholic priest in England and therefore causing Catholicism to spread ‘of purpose…not only to withdraw … subjects from their due obedience … also to stir up and move sedition, rebellion and open hostility … to the great endangering  … and to the utter ruin, desolation and overthrow of the whole realm’ (Act Against Jesuits and Seminarists, 1585). In line with the punishment for high treason as the highest crime imaginable, Father Postgate was hanged, drawn (disembowelled) and quartered at York on 7 August, 1679. He was 83.

Nicholas Postgate has been beautified by the Catholic Church as one of 85 English Martyrs. His beatification means he is known as the Blessed Nicholas Postgate, intercessional prayers can be addressed to him, and his image and relics are venerated. Reportedly a lock of his white hair is kept in a reliquary at Egton Bridge, a jawbone at English Martyrs Church in York, and a hand with a blood soaked cloth at Ampleforth Abbey.

There is an annual local rally in honour of the Blessed Nicholas Postgate, held alternatively in Egton Bridge (where he was born) and Ugthorpe (where he lived up to his death).

NORTH YORK MOORS

A lot of people get the name wrong. The North York Moors means the moors north of the city of York. There are other areas of North Yorkshire moors and moorland, but only one North (of) York Moors.

OPPOSITE-LEAVED GOLDEN SAXIFRAGE (Chrysosplenium oppositifolium)

Opposite-leaved golden saxifrage is a creeping perennial plant which can form extensive mats in damp, shady areas. So look out for it alongside becks, flushes and springs. It produces tiny golden flowers (3 to 5 mm) from February through to July. The plant has square-stems with directly opposite pairs of leaves.

Chrysosplenium oppositifolium from freenatureimages.eu

To make identification more complicated there is also an Alternate-leaved golden saxifrage (Chrysosplenium alternifolium) which shares the same genus. This species is very similar to the Opposite-leaved golden saxifrage except, as the name suggests, the leaves are alternate rather than opposite, and on triangular shaped stems. Its flowers can also be a bit bigger and brighter. The Alternate-leaved golden saxifrage is less common than its Opposite-leaved relative and it prefers a more limey habitat, but occasionally the different species can be found growing together.

Chrysosplenium alternifolium from freenatureimages.eu

ORCHARDS

In the North York Moors 19th and early 20th century farms and a lot of village houses had their own small orchards (still visible on Ordnance Survey historic mapping). Orchard fruit and other soft fruit provided part of a multi source income to people living hand to mouth and making the most of what they had. The fruit season ran from July through to winter – starting with gooseberries, then red and black currants and raspberries, then plums and finishing with apples and pears. The fruit wasn’t just sold at local markets, fruit could be sold on and because of the railways could end up in towns like Scarborough or end up in jam factories in Liverpool and Grimsby, or at the Rowntree’s factory in York to make jelly.

Apple and pear trees, as well as other tree species, are susceptible to canker (fungus). To counter this people used to whitewash orchard tree trunks with lime and spread lime on the orchard floor. Lime is still used as a fungicide.

Main local orchard species for the moors and dales are recorded as being:
Cooking Apples: Bramley’s Seedling, Lane’s Prince Albert, Old Cockpit
Eating Apples: Green Balsams, Winer Pippins
Pears: Hazels

Taken from Life and Tradition in the Moorlands of North-East Yorkshire by Marie Hartley and Joan Ingleby

The loss of orchards since WWII has been a major change in the landscape, biodiversity and culture of the North York Moors.

ORTHOSTATIC WALLING

An orthostat is a vertical ‘upright’ set stone. If its old enough i.e. prehistoric, it is likely to be called a standing stone. Less dramatic orthostats can also be found in drystone walls where farmers have made use of the stones to hand. Big stones have been reused over time and set vertically into the ground amongst the horizontally laid smaller stones more commonly found in drystone walls. Orthostats are also very useful within a wall as gate posts or as the edges of a sheep creep (to allow sheep but no other stock to rove) providing added strength and structure.

Orthostatic walling is rare enough here that where it does occur the walls are often recorded on the NYM Historic Environment Record.

Stone sheep creep built into wall in Raisdale - copyright Ami Walker, NYMNPA

Previously on the North York Moors A to Z … A, B, C, D, E, F, G, H, I, J, K, L, M

Turtle Doves: back with a purr

Richard Baines – Turtle Dove Project Officer

In my time as a birdwatcher I have learnt to identify any large pigeon-like bird crashing through the trees as a blundering Woodpigeon. These very successful birds are with us all year round fattening up on our winter bird tables.

Turtle Doves however are a very different story* – more remarkable and more refined, no clattering of wings, just a delicate flutter and an enticing soft purr. The Turtle name is presumed to come from the latinisation of their call: turr turr. The Turtle Dove is currently considered a high conservation priority in the UK because of severe population decline, and is classed as vulnerable on the IUCN’s red list of threatened species.

NYM Turtle Dove - coyright Steve Race

The Turtle Dove (Streptopelia turtur) is the smallest member of the European dove family but it flies the furthest during migration; a bird nicknamed Titan was radio tracked in 2014 and found to have flown 11,200 km from Mali back to its nesting site in Suffolk. He flew up to 700 km per night, at speeds up to 60 km per hour!

This year our North York Moors Turtle Doves have arrived back from Africa on time despite the cold north winds in early spring. Our first bird was seen on 16 April near Pickering. This was perfect timing for the start of my role as the HLF funded Turtle Dove Project Officer a few weeks later.

As the spring has developed our vital group of volunteer bird surveyors have been out and about recording Turtle Doves in known sites where they were present last year and in new sites offering similar habitats. Our project area survey is one of only two formal, locally based Turtle Dove surveys in the UK this year and the only one in the north of England. We’ll be looking to extend this surveying into the Howardian Hills Area of Outstanding Natural Beauty (AONB) in 2018.

One of the known sites for Turtle Doves is the National Park Centre at Sutton Bank. Up to three birds were recorded here in May visiting the bird feeding station, usually when there were fewer visitors around. Turtle Doves can be shy and wary. We are collecting lots of data on the birds at Sutton Bank and have a special Turtle Dove sightings book in which we want visitors to note their sightings – so if you are up at the Centre and you see the Turtle Doves, please add your report.

Using reported sightings we’ve identified the initial villages along the southern edge of the North York Moors which have small populations of the bird (< 6) and where we hope to start building community links and engagement.

During the next couple of months if you’re lucky enough to see or hear a Turtle Dove in or around the North York Moors, please let us know. The best time to hear them is either very early in the morning or late in the evening.

Example of Turtle Dove habitat - forest edge, Cropton Forest - copyright Richard Baines

*Footnote: The Turtle Dove has long been culturally associated with true love and devotion.

“..Oh yonder doth sit that little turtle dove
It doth sit on yonder high tree
A making a moan for the loss of his love
As I will do for thee, My dear
As I will do for thee”