‘Backwards research’ to move forwards with policy

This post originally appeared on the Walker Institute community blog: http://www.walker.ac.uk/news-events/backwards-research-to-move-forwards-with-policy/

Just before Christmas last year I was offered a place on the first Climate Services Academy Training (CSAT) programme. As someone who has been interested in the science-policy interface for a long time, particularly around climate issues, I was delighted with my early Christmas present from the Walker Institute (@WalkerInst on Twitter).

When the programme kicked off in mid-January, I knew I was in for a treat. The first two weeks were spent at the University of Reading where we were taken on a whirlwind tour of the topics we’d need to understand to work on ‘climate services’ (think ecosystem services, but for the climate). Topics included communication for development, international risk management law and governance, livelihoods analysis, politics and political economy, and knowledge exchange. This was followed up by a week of intense ‘scenario days’ where we were given a real-life climate or environment related issue that is currently ongoing in one of the programme’s partner countries (Senegal, Malawi, Ghana and Uganda) to read up on and report back on at the end of the day. I learnt an enormous amount in those two weeks, but we were just getting started.

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Palaeo-science in the Pyrenees at PAGES YSM 2017

Morillo de Tou – the beautiful location of the YSM

I recently attend the PAGES (Past Global Changes) YSM (Young Scientists Meeting) as well as the OSM (Open Science Meeting) 2017 in sunny Spain. The YSM was particularly exciting – a group of 80 early career researchers met in the Pyrenees, at the restored village of Morillo de Tou.

Morillo de Tou

Morillo de Tou


The spectacular surroundings were matched by spectacular science, with a combination of great talks and posters as well as breakout group discussions and workshops. The schedule was pretty packed, but we made time for some star gazing with local astronomers and a night of traditional Aragon music and “dancing” in the moonlight. Overall, I thought the YSM was an excellent opportunity to meet other young scientists, and discuss issues of particular import to our community.

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The Big Reveal – Our Tropical Phytolith Reference Collection goes live!

I just thought I’d have a little brag, and celebrate the fact that I have produced a tropical phytolith reference collection here at the University of Reading in the TPR lab. The full collection (as it stands until the next PhD student comes to help build it!) contains 152 taxa, sampled from various Herbaria around the world. My thanks go to Prof Jose Iriarté at the University of Exeter for lending me some of his material, as well as Dave Harris at the Royal Botanic Gardens in Edinburgh who let Dr John Carson sample their herbarium and live specimens. The spread of taxa includes all those denoted as diagnostically useful by Piperno’s 2006 book ‘Phytoliths’ (the bible of tropical phytolith studies) plus some extras which may turn out to be useful.

The online database of our phytolith reference collection is now available on our Palaeobank website. Feel free to take a browse!

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Exhausting but exhilarating – BES Annual Meeting 2016

BES conference photo

The ACC conference centre in Liverpool lit up at night – a great venue with excellent vegan food choices


Last week I attended my first British Ecological Society Annual Meeting and I still don’t think I’m fully recovered. With around 1200 delegates, 12 sessions running in parallel at any one time, lunchtime workshops and socials every night, it was a pretty intense experience. But of course it was worth all of the exhaustion; I met a lot of new people (as well as catching up with a few old friends), listened to some really great presentations, participated in several workshops, and got to present some early results of my own PhD work.

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Summer in Bolivia-Fieldwork experience


A sunset in the field. Richard and Frank returning at sunset from coring Laguna San Jose

This summer I went on my first fieldwork season to the tropics. It was definitely an experience! Since I’ve come back everyone who I’ve spoken to about it has said how wonderful it must have been, and how lucky I am to be able to do this as a job. And I completely agree; it was an amazing opportunity to work in such a different and exciting environment, and to see/touch the vegetation that I study and discuss all the time from afar. I also got the chance to experience Bolivian culture and improve my Spanish speaking skills (which really needed it!).



Sunlight on Laguna San Jose


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The road to one of our sites, Tumichucua

However it was also a lot of hard work, and definitely not a free holiday. We were often up early and working in the 34 degree heat and humidity all day, staying out as long as the sun was up and then sometimes processing samples in the evenings. But I knew that was going to happen. I think the most important lesson I learnt about fieldwork, especially in the tropics, is the amount of time that needs to be spent on logistics, organisation and communication once you’re out there. You can’t set out on your fieldwork with a completely fixed idea of what you’re going to sample and where. Of course it is important to have a plan, but you need to accept that everything can change once you’re out there. You can’t hope to understand the logistics of accessing a site using googlemaps alone! Local knowledge and co-operation are absolutely key, and we were lucky enough on our trip to have some great help from colleagues and locals.



Richard and I covered in orange road dust after riding on the back of the truck

We are out there to do work, and get the samples that will form the backbone of our research for the next few years (hopefully!), but it is also easy to get lost in the work and forget how beautiful the place you are working in really is. One day after a hot day digging a soil pit in the dry forest near Concepcion we decided to go swimming in a local lake as the sun set. It was beautiful and cold(ish) but sadly we didn’t pay quite enough attention to the large sign with a sad face on it next to the lakeside. We paid for it dearly the next day, when I came down with a pretty rough intestinal infection and left the others to dig the soil pit without me!

So my first experience of tropical fieldwork was challenging, but also incredibly inspiring and enjoyable. I hope I get the chance to go again!


Commuting to work…

by Heather Plumpton

From Sediment to Slides

From Sediment to Slides – phytolith training at the University of Exeter


For the past few weeks I have been lucky enough to have been working in the Archaeology Department at the University of Exeter, where I have been learning how to analyse soil and sediment samples for phytoliths.

In case you are not familiar with them, phytoliths are plant opal silica bodies that are formed from monosilicic acid (H4SiO4) taken up by the plant that is then deposited in the cells of the stems, leaves, roots and inflorescences. These silica bodies are formed in different shapes and sizes depending on the type of plant and where in the plant they are produced. In some plant groups, such as Poaceae (grasses), the phytolith characteristics are diagnostic to the sub-family level. You cannot identify these sub-families by analysing pollen grains alone, so phytoliths add another level of detail to palaeo-vegetation reconstructions. Additionally, phytoliths allow you to work at a fine spatial scale because when plants decay the phytoliths are deposited in the soil where the plant lived, so they represent the local vegetation. They also preserve well in aerobic and acidic conditions, so they can be recovered from soils as well as lake sediments.

I spent my first week in Exeter learning how to process soil samples for phytolith analysis with Jenny Watling. From soil to microscope slide it can take about 5 days, depending on the size of your sample. A lot of that time is spent repeatedly washing your sample in the centrifuge after each treatment. Essentially, you need to: (1) remove the clays, (2) remove the carbonates, (3) remove the organics, (4) retrieve the phytoliths by floating them in a heavy liquid, and (5) dry your phytoliths ready for mounting onto a microscope slide.


Picture 1Picture 1: removal of clays by defloculation
Picture 2Picture 2: removal of carbonates using HCl
Picture 3Picture 3: removal of organics using HNO3
Picture 4Picture 4: floating the phytoliths in Zn Br2


Once the slides are ready, you can count the different types of diagnostic phytoliths and draw conclusions about the vegetation that produced them. The key to this is to spend a long time looking at modern reference collection slides to learn what to look out for, and of course having helpful experts on hand to point you in the right direction – thank you Josѐ, Jenny, Sheahan and Lautaro! I spent many hours photographing the extensive reference collection from Dr Josѐ Iriate’s lab to form my own mini digital collection to use when I returned to Reading.

Picture 5Picture 5: Cyperus sp. Achene body
Picture 6Picture 6: Heliconia sp. Trough body
Picture 7Picture 7: Trichomanus sp. Scooped globular body
Picture 8Picture 8: Erhartoideae scooped bilobate
Picture 9Picture 9: Panicoideae bilobate
Picture 10Picture 10: Chloridoideae saddle

All photographs courtesy of Dr Josѐ Iriate, Department of Archeology, University of Exeter
In my final week the really interesting work began as I started to analyse my samples from a lake sediment core taken by Dr John Carson from an ox-bow lake in Acre state, Brazil. My first experience of analysing a real sample slide was quite daunting; it took me almost 5 hours to count 100 phytoliths. Thankfully it turned out I had chosen an unfortunate sample for my first analysis, with a very low concentration of tiny phytoliths, and my second attempt was much more successful; 200 phytoliths in 2 hours.

Picture 11_bPicture 11: Image from a slide showing a scooped bilobate (Erhartoideae), a panicoid-type bilobate, a tall saddle (Bambusoideae) and a globular granulate (arboreal indicator)
Picture 12_bPicture 12: Image from a slide showing two crosses (Panicoideae) and two echinate globulars (Arecaceae)



I have learnt a lot in my time in Exeter and thoroughly enjoyed it. Now I’m excited to start working on pollen as well…

Heather Plumpton,

PhD student at the University of Reading



Meet Heather:

In my PhD with the Tropical Palaeoecology Research Group at the University of Reading I am interested in looking at ecological patterns over long timescales. I will use palaeoenvironment proxies, such as fossilised pollen and phytoliths, to reconstruct vegetation responses to climatic changes. In particular, I am investigating the long-term impacts of a mid-Holocene (~6000 years ago) drought on ecotonal regions of the Amazon rainforest in northern Bolivia. I am also interested in how plant-climate interactions are represented in Dynamic Global Vegetation Models (DGVMs) and how this feeds into Global Climate Model predictions for future plant responses to climate change.