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Mariecia Fraser

@uplandresources.bsky.social
330 followers 180 following 78 posts

Professor; animal science; upland farming; land use; grazing ecology; nutrient use efficiency; GHG emissions. Head, Pwllpeiran Upland Research Centre, Aberystwyth University. 🐑☘️🐐🐂🌱🦙🌳

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Mariecia Fraser @uplandresources.bsky.social · 18/06/2026
I felt the need to give some context to the headlines. Dartmoor should be a mixed grazing success story 😕
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Adam Hayward @adhayward.bsky.social · 10/04/2026
Exciting PhD opportunity on the ecological impacts of anthelmintic use on soil fauna, with a crack supervisory team and expertise from @glasgow.ac.uk, @hutton.ac.uk and @moredunfoundation.bsky.social! Find more details here: www.findaphd.com/phds/project...
findaphd.com
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Alison Strange @alisonstrange.bsky.social · 12/04/2026
" the wrong trees in the wrong places by the wrong people.” www.heraldscotland.com/news/2600942...
heraldscotland.com
'Gravy train or vital carbon sink? Jury is still out on conifer planting grants'
Is public money fuelling a forestry “gravy train”? A growing row over carbon, biodiversity and subsidies is reshaping Scotland’s tree planting…
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Mariecia Fraser @uplandresources.bsky.social · 14/01/2026
Lots of rare hairy ice in the woodland this morning #icewool #frostbeard #nature #fungi
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Mariecia Fraser @uplandresources.bsky.social · 11/01/2026
The ponies are back and doing what native ponies do to find forage in harsh weather. They live out on the hill all winter🐴 #native #conservationgrazing #molinia #welsh
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Mariecia Fraser @uplandresources.bsky.social · 09/01/2026
Our alpacas are coping very well with the snow ❄️ Lots of nice insulation! #winterwonderland #snowday
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Mariecia Fraser @uplandresources.bsky.social · 26/09/2025
Can we science too please??
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Mariecia Fraser @uplandresources.bsky.social · 23/09/2025
One of these new magnetometers is at Pwllpeiran 👍☀️⚡️
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Alan McElligott @amcell.bsky.social · 17/09/2025
Closing date for applications, October 1st, 2025 ⬇️⬇️⬇️
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RSPB Science @rspbscience.bsky.social · 09/09/2025
We're hiring!🧪🪶 Join our Conservation Science Technical team and help design and develop field equipment for research activities such as tracking and monitoring Full details here: app.vacancy-filler.co.uk/salescrm/Car...
app.vacancy-filler.co.uk
Technical Officer - Conservation Science | RSPB
We're seeking a highly motivated person with excellent practical and design skills to join the Conservation Science Technical team. Collaborating closely with other scientists and colleagues across RS...
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Forest Research @forestresearchuk.bsky.social · 01/09/2025
🗣️ Calling all woodland owners and managers – we need your help to expand a GB-wide network of pheromone traps to help protect Britain’s spruce woodlands from Ips typographus (spruce bark beetle). 🔗 Find out more: ow.ly/rsiF50WOXb2
ow.ly
Help prevent establishment of spruce bark beetle by joining national monitoring project - Forest Research
Help protect Britain’s spruce forests by installing pheromone traps and contributing vital data on the spruce bark beetle, Ips typographus.
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Agroecology Map @agroecologymap.bsky.social · 19/06/2025
‪🌱 Agroecology Map is a Free Software & Open Data 🌍 platform to map agroecological initiatives. Anyone can use, share & improve it! Built for transparency & collaboration 🤝 #Agroecology #OpenData #FreeSoftware #FoodSovereignty #Agroecologia #Agroforestry 🔗 agroecologymap.org/who_we_are
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Hannah Hughes @hannahhughes.bsky.social · 18/08/2025
We recently had a series of conversations with upland #farmers @uplandresources.bsky.social, scientists & policymakers and we heard and reached similar conclusions - something has to change and dialogue is needed to determine that change theconversation.com/family-farme...
theconversation.com
Family farmers say their way of life is an impossible dream when ‘the bread of life is worth less than rusty metal’
In the Fens of eastern England, small-scale farmers fear for their future amid ‘astronomical’ costs and flatlining income.
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Mariecia Fraser @uplandresources.bsky.social · 15/08/2025
Just back from a fabulous few days on Dartmoor talking through priorities for new management trials on commons there 🐏🐂🐴 🔥 🌱🌼🦋🕷️ #molinia #grazing #gorse #farming #biodiversity
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Ecological Continuity Trust (ECT) @ect-uk.bsky.social · 30/07/2025
#BrignantPlots, #Pwllpeiran #Wales is the #LTESiteOfTheWeek. Mariecia Fraser @uplandresources.bsky.social is testing the effectiveness of reducing different types of #LandManagement on #grassland. bit.ly/Brignant @ibers.bsky.social @aberuni.bsky.social 🌎
Text: LTE Site of the Week-Brignant Plots, Wales. Photo of 3 sheep grazing. Text: Running since 1994, Mariecia Fraser, University of Aberystwyth. University. Icons for grassland and grazing.
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Mariecia Fraser @uplandresources.bsky.social · 14/07/2025
Farmers making the most of the weekend weather ☀️🥵 Upland pasture closed up in April and only harvested now = good for biodiversity. Don’t be fooled by the wrap! #haylage #winterforage #nomowmay
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Mariecia Fraser @uplandresources.bsky.social · 29/06/2025
Check out the dorsal line and tiger stripes 😍 With those ‘primitive’ markings he has to be Konik, right?🤔 No. He’s my wonderful Highland pony; representative of just one of Britain’s many native breeds that make equally good conservation grazers #conservationgrazing #ponies
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Mariecia Fraser @uplandresources.bsky.social · 27/06/2025
Alpacas out on different types of grassland 🦙 #improvedpasture #SNRG #alpacas
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Cat Frampton @catframpton.bsky.social · 16/06/2025
It’s been a whole month since the peat map of England was launched! It’s still very wrong And it’s still online So I’ve written a open letter to @naturalengland.bsky.social I am starting to worry that massive mistakes are just a thing with the whole organisation. What else is wildly wrong?
My letter screenshot. Dear Sallie Bailey.
I am really very sorry, but your new peat map, the England Peat Map (EPM) is deeply flawed and should be taken offline as soon as possible, and all conclusions drawn from any of its data should be removed from public discourse and decision making.
I have raised this matter on social media with Natural England, Tony Juniper, Steve Reed, and Mary Creagh, and have not received anything back so I am now bringing it officially to your door.
While I fully understand how so many massive mistakes can have happened during the making of the map, I cannot understand how it was launched without the mistakes being flagged up and fixed. I can only come to the uncomfortable conclusion that within the organisation there is no space for mistakes to be made, aired without blame, and learnt from. I worry that a culture of bluster and sweeping issues aside is prevalent. Did nobody speak up about the obvious mistakes? Are people still truly sticking to the party line of 'a few minor errors' when so many large errors are easy to see?
If this is not the case, and the maps flaws are due to a systemic lack of attention to detail or ground truthing then you have an easier job when it comes to fixing the issues. With a bit of time and some extra work we can have a map that does want it was supposed to do. As it stands even the original purpose of the map, (of helping people find the peat grips so they can be fixed), does not work, let alone the additional layers and uses.
The mistakes so large and so scattergun it is impossible to find a work around when using the map. If every river was mapped as peat, then you could accept that, or if all rocks were deep peat, but as it is just some, you never know what's good and what's not.There appears to have been no cross referencing with other maps within the
EPM let alone elsewhere in the organisation. Quite why I do not know. The data is there, priority habitats and living England mapping along with the basic maps available showing road networks and waterways could have been used to double check the data, yet they have not been.
The obvious mistake I have found so far are:
Almost all the limestone pavement in England mapped as peat including SSSI areas and the area in the launch video, malham tarn, one of the most studied areas in the country for ecology and geology.
As far as I can see every Dartmoor tor is mapped as peat, along with large areas of rocks and shallow mineral soil surrounding the tors.
Some reservoirs mapped as peat, including Colliford, Cornwall second largest, holding 28,000 mega litres of water.
Shadows of trees, hedges and walls mapped as bare peat across broad sweeps of landscapes to such an extent that it is obvious what time of day the original images were taken
Rivers mapped as peat
China clay works mapped as peat
Known SSSI bogs not mapped as peat
Alluvial river deposits mapped as peat
The vegetation layer mapping known woods (on the tree inventory map) as open bog vegetation
Large areas of semi-improved grassland shown as Eriophorum Bog
Bracken mapped as molinia bog at a vast scale
Roads mapped as peat gullies again and again
Ridge and furrow field systems seen as peat grips along with other archeology mapped as damaged peat
Natural streams and rivers mapped as peat gullies
AndThe peat depth and vegetation layers are wrong across so much or the map that it is unusable as a resource.
This list is not exhaustive.
So, in short:
areas that Natural England know are not peat mapped as peat, areas that Natural England know are peat not mapped. Infrastructure like the road network ignored and other open source maps not cross referenced.
The scale of the errors clearly show that any data taken from the EPM cannot be correct up to and including the GHG emissions figure and the restoration potential figures, and any site specific or landscape scale decisions will be made much harder by the maps bad data.
It begs the questions, firstly why is the map still online? A lightweight disclaimer, put up three days after the launch, in no way mitigates the potential harm this map could cause.
Another question about the workplace practices around normal human errors, and how the whole organisation deals with them are also starting to become more pressing as time goes on. If this is allowed to happen what else is equally wildly wrong? Can any of the data coming out of Natural England be trusted?
As I said, 1 am very sorry about all of this, especially after everyone's hard work on the project, but the fact remains that the new England Peat Map is badly wrong and needs to be taken offline.
Thank you for your prompt attention to this matter
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Mariecia Fraser @uplandresources.bsky.social · 09/06/2025
Whatever happened to nuance?? Dog whistle articles like this only undermine progress towards finding multi-actor consensus on future land management. Hyperbole is no substitute for knowledge. www.theguardian.com/commentisfre...
theguardian.com
There’s an invader turning huge swathes of Britain into deserts – and these dead zones are spreading | George Monbiot
Vast areas of land are now dominated by one species – purple moor-grass – and good luck with seeing a bird or insect there. How do we revive these habitats, asks Guardian columnist George Monbiot
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Mariecia Fraser @uplandresources.bsky.social · 30/05/2025
Unexpected visitor at the office today 😯 #bat
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Markus Eichhorn @markuseichhorn.bsky.social · 26/05/2025
High deer densities are one of the main challenges in temperate forest restoration and management. But not all deer are the same! In this review we consider the evidence for their impacts on woody vegetation ->
The number of studies reporting the occurrence of each deer species, together with the different effects on woody vegetation that were studied. Note that the numbers in this matrix add up to more than the total number of studies (n = 455), as many studies reported more than one deer species present and more than one effect category.
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Mariecia Fraser @uplandresources.bsky.social · 16/05/2025
First cria of the year this morning ☺️ She arrived quickly when no one was watching and was up and about in no time 👍 #alpaca #newarrival #cria #cute
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Mariecia Fraser @uplandresources.bsky.social · 13/05/2025
And we’re off! Kidding 2025 is underway #cute #goats
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Mariecia Fraser @uplandresources.bsky.social · 12/05/2025
Good to have some of our research from Bronydd Mawr included in this new report 👍 #mixedgrazing #SNRG #sustainable #grassland sustainablefoodtrust.org/wp-content/u...
sustainablefoodtrust.org
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Mariecia Fraser @uplandresources.bsky.social · 05/05/2025
For various reasons we opted to go for a late lambing with the Beulahs, which has tied in perfectly with this amazing weather 💯 Just a few stragglers left now.
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Mariecia Fraser @uplandresources.bsky.social · 02/05/2025
Cuckoos calling all across the valley and the cuckoo flowers are out 🙂 #lovewhereyoulive
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Mariecia Fraser @uplandresources.bsky.social · 26/04/2025
The swallows and house martins are back and today I heard the cuckoo for the first time 💚 #springhassprung
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Mariecia Fraser @uplandresources.bsky.social · 24/04/2025
Interesting results from this study using mesocosms created from peat taken from our #GGRPeat demonstration site 👍 #UKRI #IBERS #CO2RE www.sciencedirect.com/science/arti...
sciencedirect.com
Rewetting alongside biochar and sulphate addition mitigates greenhouse gas emissions and retain carbon in degraded upland peatlands
Peat soils store significant amounts of carbon (C) globally, and increased C sequestration into peatlands could play a role in offsetting anthropogeni…
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Mariecia Fraser @uplandresources.bsky.social · 22/04/2025
Delighted to be working with Miranda Whall on her project 🙂
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Mariecia Fraser @uplandresources.bsky.social · 15/04/2025
Single or twins? 🤔 #stillsmiling #goats #spring
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Mariecia Fraser @uplandresources.bsky.social · 13/04/2025
The hedges have all woken up in the last week or so #spring
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Mariecia Fraser @uplandresources.bsky.social · 11/04/2025
We’ve been talking for years about the increased risk of wildfires due to the fuel load building up on the hills. And now there’s smoke in all directions 🔥😕
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Mariecia Fraser @uplandresources.bsky.social · 07/04/2025
Not long now! @ibers.bsky.social
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Mariecia Fraser @uplandresources.bsky.social · 01/04/2025
In our latest paper we compared DNA metabarcoding and quadrat surveying as methods for determining botanical composition 🌱🧬 #BBSRC #IBERS #grassland #StapledonTrust #ResilientCrops onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Comparative Analysis of Pasture Composition: DNA Metabarcoding Versus Quadrat‐Based Botanical Surveys in Experimental Grassland Plots
DNA metabarcoding offers a scalable alternative to traditional botanical surveys for monitoring plant community composition under different management regimes in experimental grassland plots. Compari...
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Aberystwyth University @aberuni.bsky.social · 24/03/2025
Peatbogs will be given a unique voice by an innovative project that seeks to portray scientific data through art. ‘When Peat Speaks’ is led by Art lecturer, Miranda Whall. 🖱️ tinyurl.com/43ypmx4m @co2rehub.bsky.social #peat #peatbogs #Pwllpeiran #artandscience
tinyurl.com
March   : News , Aberystwyth University
Peatbogs will be given a unique voice by an innovative project that seeks to portray scientific data through art.
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Mariecia Fraser @uplandresources.bsky.social · 22/03/2025
Peiran Finale - 2 years old this summer. Love his fluffy ears! 😁 #alpaca #allgrownup
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Mariecia Fraser @uplandresources.bsky.social · 21/03/2025
That’s the wethers we use on experimental plots all prepped, weighed and allocated to groups ready for the field season to begin 🐑 #sheep #BBSRC #IBERS
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Larry the Cat @number10cat.bsky.social · 15/03/2025
Beware the Ides of March...
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Mariecia Fraser @uplandresources.bsky.social · 14/03/2025
Feeding time for the Beulah ewes and female alpacas. And another dry day! 🐑🦙🌤️ #spring #ladiesinwaiting #uplands
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Dr Adrian Colston @dartmoorac.bsky.social · 12/03/2025
www.linkedin.com/pulse/sfi-de...
linkedin.com
The SFI Debacle. Lessons need to be learned, not only in Defra
“Our Agri Environment approach is not sustainable, what happens when the money runs out? If you don’t provide the economic hooks, linking products to the environment then it will all unravel unless we...
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Ecological Continuity Trust (ECT) @ect-uk.bsky.social · 10/03/2025
1/2 On Saturday it was #InternationalWomensDay so we celebrate the women who oversee, or manage either on their own or with others, the #LongTermExperiments in our network & some of which are ECT #trustees. @uplandresources.bsky.social @drciaradwyer.bsky.social
Text: International Women’s Day. Celebrating the women who lead ECT-registered long-term experiments. 
Photos of the following people alongside text captions:
Bridgett Emmett, UKCEH, ECT trustee Plynlimon; Jade Hatton, UKCEH, Plynlimon; Catalina Estrada, Imperial College, Nash’s Field; Jane Hawkins, Rothamsted Research, Rowden Plots.
Photos of the following people alongside text captions
Netty Van Dijk, UKCEH, Whim Bog; Mariecia Fraser, Aberystwyth University, Brignant Plots; Jill Kowal Royal Botanic Gardens Kew, Thursley Common; Sabine Reinsch, UKCEH, Clocaenog.Photos of the following people alongside text captions: 
Christine Watson, SRUC, Tulloch; Ruth Mitchell, James Hutton Institute, MOORCO; Francine Hughes, Anglia Ruskin, Wicken Fen; Ciara Dwyer, Lund University, ECT trustee, Ainsdale Dune Slacks; Carly Stevens, Lancaster University, ECT trustee, Buxton.
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Aberystwyth University @aberuni.bsky.social · 10/03/2025
Goats can process information and solve memory tests better than sheep and alpacas, our @ibers.bsky.social researchers have discovered. tinyurl.com/568tmx2z
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Mariecia Fraser @uplandresources.bsky.social · 08/03/2025
Honoured to have received a Visibility Award as part of @aberuni.bsky.social celebrations to mark #InternationalWomensDay. Many thanks indeed to the amazing team at #Pwllpeiran for the nomination!!🙏
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Mariecia Fraser @uplandresources.bsky.social · 07/03/2025
Delighted that this paper is finally out!🌱☘️ Its gestation would have made an elephant wince, but the issues dealt with have only become more relevant and pressing since its inception. @adthomas1970.bsky.social #multifunctional #grassland #livestock #farming #IBERS www.nature.com/articles/s44...
nature.com
New thinking is needed to make the most of formerly improved upland pastures - npj Sustainable Agriculture
npj Sustainable Agriculture - New thinking is needed to make the most of formerly improved upland pastures
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Mariecia Fraser @uplandresources.bsky.social · 06/03/2025
Our second paper comparing the cognitive behaviour of sheep, goats and alpacas is now out! ⬇️🐑🐐🦙 #IBERS #AberUni #AberDoc #animalbehaviour www.sciencedirect.com/science/arti...
sciencedirect.com
Do ewe remember? Comparative foraging behaviour of sheep and alternative livestock species in a spatial memory task
Foraging strategy is fundamentally linked with resource availability and dietary preference. Adaptive feeding behaviours, such as the role of spatial …
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Mariecia Fraser @uplandresources.bsky.social · 05/03/2025
Chilly morning❄️ Male alpacas and tups ready for breakfast.
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Ecological Continuity Trust (ECT) @ect-uk.bsky.social · 26/02/2025
In August 2017, Mariecia Fraser @uplandresources.bsky.social wrote a #blog on the #grassland #LongTermExperiment #LTE she manages in #Wales: Brignant Plots. Read it here: bit.ly/2N7e6Cf @ibers.bsky.social @aberuni.bsky.social #Ecology #Environment #Pwllpeiran 🌎
bit.ly
Brignant stands the test of time — ECOLOGICAL CONTINUITY TRUST -
Mariecia Fraser from the University of Aberystwyth writes a blog about the Welsh long-term experiment (LTE)- the Brignant Plots at Pwllpeiran that is registered with the Ecological Continuity Trust.
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Mariecia Fraser @uplandresources.bsky.social · 24/02/2025
Proud to be able to say this includes work produced as part of a multidisciplinary collaboration between artist Miranda Whall, carbon scientist Andrew Thomas (@adthomas1970.bsky.social), Fred Labrosse from @abercompsci.bsky.social, and myself. #NERC #disciplinehopping #soil #sensors #art
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