Monday, 24 October 2016

Getting stuck in



As the days get colder and inevitably wetter, the coastal ranger team set to work on more autumnal tasks. In the last few weeks we have been focusing our efforts on Newton Pool local nature reserve. A brilliant wetland habitat it is home to a host of different species; from shoveler and little grebe to water plantain and otter. Various forms of vegetation management ensure this area is kept in top shape for its inhabitants.
 
One of the easiest residents to spot are our Exmoor ponies who graze the area throughout the year. Through munching and trampling they ensure the grasses and reeds are kept low, creating open areas for birds and allowing less robust herb plants to flourish. The rangers and volunteers give them a helping hand by cutting and removing areas of grass to create open areas and reduce nutrient levels. Later on in the year we will also coppice a section of the willow and alder to encourage regrowth.
One of the many residents: an elephant hawkmoth caterpillar  © KateBradshaw
Arguably the most entertaining activity is reedmace management. Although a native species to Britain, reedmace Typha latifolia was introduced to the site many years ago and is starting to take over; out-competing other plants and closing in around the pool, making it a less open habitat for birds. Reedmace has an incredible root structure with a good rhizome system that creates a network underground, stretching into the open water.  This means there is only one thing for it – to don the waders and get stuck in (sometimes quite literally).

 

A volunteer tackling a stand of reedmace 
Volunteers have found themselves knee deep in mud pulling up the towering plants to compost them. There is always the occasional casualty. Although we are yet to have a full face first tumble into the mud this season, we have had two cases of being stuck with a rescue operation required, one lost wellie and a lot of wet feet.

 

Awards for muddiest participant...

We have to admit we are often distracted by the awesome creatures we find hiding amongst the vegetation. Chasing a spider around trying to get a photo is always a good excuse for a few minutes break.

Pachygnatha clercki found and painstakingly identified by one of our volunteers © KateBradshaw


Thursday, 22 September 2016

The Dunes of St. Aidans

Rolling from sandy foreshore to marram covered dune to herb-rich grazing paddocks, St. Aidans dunes are a brilliant example of Northumberland dune habitat. Becoming a multi-coloured swathe of flowers in the spring and summer, they are home to nesting birds, small mammals and hundreds of insects. Although they are naturally very healthy a surprising amount of management goes into ensuring the biodiversity of these dunes is maintained.
 
Digging out pirri-pirri
Invasive species must be managed to ensure native species can flourish. Lines of volunteers walk the dunes, forks in hand and eyes to the ground, looking for the bright green serrated leaves of pirri-pirri. It’s small brown seed heads attach to clothing and animal fur and spread across the dunes, easily setting seed. An invasive plant introduced from New Zealand, we dig out the roots to prevent its long tendrils out-competing less vigorous native species. Garden varieties have encroached onto the dunes and although some species such as Spanish bluebell and daffodil look beautiful during the spring flowering season they can easily dominate areas and threaten the delicate balance of the herb rich grassland.
 
Raking grass in the dunes
The dunes are also home to Exmoor ponies that graze the paddocks at certain times of year. They allow herb plants to flourish by preventing the spread of more dominant grasses. We also cut the grass in certain dune hollows that we are unable to put stock on as a form of artificial grazing. The bright yellow of ragwort is a common site along the coast in the summer months and it flourishes in the dunes. Although it is a native species it is poisonous to livestock and so must be dug out of the areas grazed by ponies and areas adjacent to paddocks. Hundreds of cinnabar moth caterpillars, which feed solely on ragwort, have to be relocated from flowering plants being pulled to the tiny ragwort florets that will hopefully be munched before the next flowering season.
 
Cinnabar moth caterpillar
This management approach is constantly evolving and being assessed to ensure it is as effective as possible. So far it has allowed species such as tufted vetch, meadow vetchling and pyramidal orchids to flourish adding to the botanical mosaic of colour and species. While pulling ragwort our team of volunteers found destroying angel fungi nestled in the grass and an exciting collection of butterflies, such as common blues and painted ladies, could be seen fluttering through the paddocks. Having just finished a big fencing project along the roadside to ensure there any no pony escape attempts this winter, we are now turning our minds to pirri-pirri hunting and other winter management work in the beautiful dines of St. Aidans.
 
 
Common blue butterfly