Messing about with moss… (it’s educational, honest!)

by Caroline Freeman

I am not based at Pwllpeiran, but am perhaps best described as a ’part time’ team member. I’m a first year PhD student and am making good use of Pwllpeiran for my project, studying the impact of management on soil water infiltration, with the aim of understanding links between land use, land management and flood risk. I love being outdoors instead of in an office, so escape up to the hills whenever I can.  I have a background in ecology and environmental education, having worked as a countryside ranger for many years in Scotland, as a warden at Ynyslas Nature reserve and more recently as an Education Officer for Natural Resources Wales. I’ve always enjoyed education work, so when I heard that Pwllpeiran were planning to organise a stall for the University science week I was keen to get involved. They were also planning an activity focusing on sphagnum moss, which plays an important role in flood mitigation, something very relevant to my PhD.

During Science Week, a range of hands-on exhibitions at Aberystwyth University are provided for over 1400 school children from around Wales, as part of British Science Week, to enthuse young people about science. The fair is organised by the University’s Centre for Widening Participation and Social Inclusion (CWPSI).

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Collecting moss on the hill

Lots of different departments get involved and the activities can include anything from guiding robots through mazes, to making slime and playing with model rivers.  We wanted to provide hands-on activities to demonstrate the important role that sphagnum moss plays in storing and filtering water. Luckily, Hannah had the answer – a ‘high-tech’ solution that involved water, a bucket of moss, and a little bit of digging…

Our stall consisted of three activities. Firstly, sphagnum soaking in water was placed in one tub, next to another holding some sponges soaking in water. The schoolchildren could grab a handful of sphagnum to see how much water it holds, and compare it to a sponge. This was a very popular activity, with the pupils enjoying squelching and squishing the sphagnum moss. It gave us a chance to chat to them about how sphagnum could help mitigate flooding, by storing large amounts of water and reducing surface run off into the rivers.

Secondly, three tubs with three different types of vegetation cover were set up next to each other. These had been dug up from Pwllpeiran, there are some nice square shaped holes somewhere up there now…   One tub held peat soil, one had soil and grass, and one had soil and sphagnum. Water could be added to the top of these tubs, which ran through to clear plastic bottles underneath.  Children could see first-hand how much water came through each tub, and also compare the colour of the water and amount of sediment it carried.  There was less sediment in the water that had run through sphagnum, showing the role it plays in filtering water.


Showing how sphagnum helps to manage water

Finally, some microscopes were set up so that the pupils could compare dry and wet sphagnum and see the differences in shape and structure as it took on water.

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Sphagnum under the microscope

We had many visitors to the stall, so with a bit of luck some young people went away with a new interest in environment, the natural world and the difference one small plant can make to the natural world.

Following the success of the science fair, we are planning more education group visits to Pwllpeiran, watch this space!


From staff to student (again)

From staff to student (again)

By Ben Roberts

Decisions, decisions…

This time a year ago, February 2016, I was writing the first posts for this blog; very much into my job at the time and not really wondering what was going to happen when the fated day of September the 6th rolled by and my contract was to finish. Having spent 6 months (with 5 remaining) as a KTP Associate; mapping the pipeline for producing the Alzheimer’s disease drug galantamine from daffodils and supplying the related QA documents; I hadn’t bothered to worry myself too much on the

Though, unfortunately as it does, time went ticking by. And by the beginning of June I was beginning to scratch various parts of my head quite a bit over what I should do come the big day. Fortunately, my nails and receding hairline were saved from too much damage.

One particularly wet lunchtime (we get lots of those at Pwllpeiran), Mariecia asked me what I wanted to do post contract – a dangerous thing to ask any not-long-graduated 22 year old. I had however been mulling it over in anticipation of such a question. Having greatly enjoyed my job, my time at Pwllpeiran, and the university in general- I thought that given the opportunity I might like to stay on. I also realised that the thing I enjoyed the most was the research side. And fortunately, when Mariecia told me about her future projects – one in particular stuck out.

Sooo, what was this new project?

Well, it was an upcoming PhD project due to start in September 2016. A collaborative project between IBERS, the computer science department, RSPB Lake Vyrnwy, and the Elan Valley Trust titled ‘Understanding and exploiting livestock behaviour to manage upland vegetation for wildlife and ecosystem services’ (catchy title i know!).  70a57409a2cb2f99a7951f54883c4023_vector-white-sheep-eating-a-sheep-eating-clipart_1300-1025An application led to an interview, the interview led to an offer, and here I am.

The basic premise of the project is to understand more about how, and why cattle, sheep and ponies eat what they eat; what influences their choice, and by knowing this- can we manipulate the influencing factors so they eat what we want them to? The utility of this being to create grazing prescriptions that could be used to help restore habitats that are often impeded by certain vegetation e.g. Molinia caerulea over-dominance on restoring upland blanket bogs.Which when we consider that these habitats provide valuable ecosystem
services, such as climate regulation (UK peatlands contain at least 3000 million tonnes of carbon, which is twenty times as much carbon stored in the whole of the UK’s forest biomass (IUCN, 2009))- it seems important to try and restore them as best we can.

  “I trust you can handle this contraption, 007?”

One of the real fun parts of this project is the collaboration with Aber’s Computer Science department. Given the scale of plots used in this study, and the need to know where these animals are at one time- we joined forces with Comp Sci in order to try and develop some specific equipment to do the job. I wont say too much now, as they’ll be a blog on that at the beginning of next month, but to keep the suspense going I will say it involves specially developed electronic ear tags, and auto piloted drones (exciting i know!).

Until next time!


Lots to look forwards to I’m sure!



IUCN. UK committee (2009).  Peatlands and Climate Change.  IUCN Peatland programme. Accessed online.