June 10, 2025
Hlophe B. & Bamford M.K. (2025) Charcoal insights on the vegetation, climate and subsistence patterns at Wonderwerk Cave. Quaternary International 728,109755. DOI: 10.1016/j.quaint.2025.109755
To find the complete list of articles in the Mapping Ancient Africa special issue of Quaternary International click here.
December 11, 2024
by Jelle Kraak
As part of my MSc Biological Sciences research project at the University of Amsterdam I travelled to Africa, where I first presented the early findings of my research at the SASQUA congress (blog post 1) in Oudtshoorn (Western cape), before heading to the University of Kwa-Zulu Natal (blog post 2). Here I met up with local experts and prepared for the upcoming fieldwork, which the previous parts of this blog series covered. Now, the time has come for the final and best part, about my fieldwork in the absolutely gorgeous Drakensberg mountains.
Aims: As the samples for my research had already been collected earlier by my supervisors Prof. Dr. Jemma Finch & Prof. Dr. Trevor Hill for the University of Kwa-Zulu Natal, our initial goal was to collect various samples (charcoal, sediment cores, etc) for the next students. During my time at the university of Kwa-Zulu natal, however, we realized that it would be great to collect a bunch of C3 and C4 grass species, to extract phytoliths (amorphous silica particles formed in plant tissues) from, which would help with the interpretation of our data. This then became our new focus. To achieve this goal we visited the Drakensberg twice, one day trip in the weekend, and one trip with an overnight stay.
After a night of utterly terrible sleep (I was alone on the AirBnB property, the gate did not lock due to the cold, and our dogs started barking at something (someone!?) at 2AM), I woke up at 6AM to get ready for the long day ahead of us. Jemma came to pick me up at the, bringing coffee with her, which I really appreciated. We then picked up Trevor at their place and began our drive towards the mountains. I had not seen much of the landscape in the Kwa-Zulu Natal province, which turned out to be very compared to the Western Cape. Whereas the western cape had fynbos vegetation (very similar to the Mediterranean, KZN was more savanna like. There was grass everywhere the eye could see, except for the patches of spruce, planted by humans. Halfway through the drive the Drakensberg mountains came into view, which was stunning. We then drove through some small villages, until we finally arrived at the Berg.
October 11, 2024
After visiting the SASQUA conference and presenting my work there (see SASQUA Conference post), we travelled to the University of Kwa-Zulu Natal in Pietermaritzburg (UKZN), where I would be staying for three weeks. During this period, my goal was to meet with local experts and to visit my site of study in the Drakensberg mountains. This would help me gain more insight into the environment I’m studying and provide me with an opportunity to collect more samples.
After the SASQUA congress finished, we flew from Port-Elisabeth to Durban. This would be my first time in one of the highly urbanised parts of South-Africa. We drove about an hour from Durban to Pietermaritzburg, better known locally as PMB, and I immediately noticed the stark difference between the countryside of the Western cape and the urbanised areas of Kwa-Zulu Natal. The city was rough around the edges and felt generally less safe than the laid-back countryside. Luckily, my accommodation was located in one of the better neighbourhoods close to campus. Macho the adorable dog of the AirBnB owners further assured my feeling of safety.
August 12, 2024
During the Mapping Ancient Africa writing workshop in Kenya (3-6 June 2024) Stefanie Kaboth-Bahr conducted a series of short interviews with the scientists attending. During the interviews she asked the participants and instructors to describe their scientific background, what had motivated them to take part in the writing workshop, and what they thought the most important thing they had gained from it. You can now meet the first four of these scientists now by watching the videos below, or catch up with all the latest videos on the Mapping Ancient Africa YouTube Playlist.
June 6, 2024
As part of my MSc Biological Sciences (University of Amsterdam) research project entitled “Assessing the effect of human induced fire regime changes on vegetation in the Drakensberg mountains” (for further details click to see previous post). I’ve travelled to Africa, where I’ll be staying a month. During this mini blogpost series I’ll take you with me on my travels!
In the first week of my visit here, I along with my supervisor Prof. Trevor Hill and students from the University of Kwa-Zulu Natal went to visit the biennial SASQUA (Southern African Society for Quaternary Research) congress.
During the first poster session, I presented my poster which went into detail on how we are developing a proxy to reconstruct past fire using micro-Fourier Transformed Infrared Spectroscopy (µFTIR). These reconstructed fire temperatures can then be compared with phytolith or pollen data to assess the effects of different fire temperatures on local vegetation over time. The presentation and poster were well received!
After my poster presentation there were two more congress days which were filled with interesting talks and beautiful posters.
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June 5, 2024
Hello Ecology of the Past readers, my name is Jelle Kraak and I’m currently doing a research project for my MSc Biological Sciences (University of Amsterdam) supervised by William Gosling (University of Amsterdam), Jemma Finch (University of KwaZulu-Natal), and Trevor Hill (University of KwaZulu-Natal). The project is entitled: “Assessing the effect of human induced fire regime changes on vegetation in the Drakensberg mountains”. During the project I will visit South Africa to work at the University of KwaZulu-Natal and visit field site thanks to partial funding from the Amsterdam University Funds.
As many of you know, humans have been interacting with the environment for millennia in various ways. One of the ways in which humans interact with the environment is through the ignition of fires. By doing so, humans may change fire regimes (fire frequency, severity and/or intensity), which in turn can cause changes in vegetation composition and structure. By using a combination of phytolith (local vegetation) and charcoal (fire) data from two sediment cores obtained from wetland environments in the Drakensberg mountains, we aim to assess the effect of fire regime changes on vegetation over the last 6000 years.
The phytoliths (biogenic silica microfossils) allow for the reconstruction of the past vegetation. Charcoal fragments characterize all aspects of past fire regimes: (i) frequency (time series analysis of charcoal data), (ii) severity (abundance of charcoal in samples reflecting biomass consumed), and (iii) intensity (spectral properties of individual charcoal fragments reflecting combustion temperature).
The most interesting part of this project (in my humble opinion) is that this study is the first to use micro-Fourier Transformed Infrared Spectroscopy (µFTIR) to reconstruct fire temperatures from field samples ánd combine these accurately reconstructed temperatures with local vegetation data! It is important to accurately estimate fire temperatures, as the temperature of a fire dictates the type of plant materials which are consumed in a fire (the higher the temperature, the greater the proportion of woody material burning up). Similar studies have been conducted previously, however, these studies compared fire severity i.e. total burnt biomass with vegetation data. Although this works decently, total burnt biomass is not an accurate representation of fire intensity or temperature, as at very high temperatures biomass turns to ash, which cannot be detected in sediment cores. Through parameterizing both the vegetation changes and the fire regime we will provide a comprehensive picture of how changing human fire use practices modified the vegetation. We anticipate that: (i) a decrease in fire intensity resulted in woody encroachment of the surrounding vegetation, which was concomitant with the arrival of agropastoralists c. 600 years ago, and (ii) a shift in the proportion of C3 and C4 grass species in reaction to temperature changes in the Drakensberg mountains.
June 4, 2024
On the 20 June 2024 (17:00-18:00 CEST) the next Mapping Ancient Africa (MAA) online seminar will take place. This talk will introduce a parallel INQUA funded project “PalaeoHome” (@PalaeoHome). It is hoped that there can be complimentary lines of research identified between PalaeoHome and the MAA projects.
The seminar will be delivered via Zoom. The link for the seminar can be obtained from the MAA Slack channel or by contacting the chair of this seminar (Stefanie Kaboth-Bahr). If you want to know more about the Mapping Ancient Africa project visit our web pages and please do not hesitate to get in contact if you want to get involved.
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July 3, 2023
The Mapping Ancient Africa (MAA) project has a double session of talks and a poster session at the INQUA congress in Rome 2023. Our session will be on Wednesday 19 July.
If you are at the INQUA Rome congress please come along to our talks and posters in Session 64: Mapping Ancient Africa: Climate, Vegetation & Humans.
Part 1: 08:30-10:30
Part 2: 11:00-13:00
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March 30, 2023
Having recently traveled to South Africa as part of the Landscape Dynamics field course run by our graduate school, and to be thinking again about trying to obtain funding to further research in Africa, I thought it might be fun to turn to the journals in which I have an editorial hand (Plant Ecology & Diversity, Vegetation History & Archaeobotany, and The Holocene) and see what new work was coming out on African ecosystem dynamics. From each of these journals I have selected two recent papers to highlight here.
The papers come from across the continent and all have a component of the ecology of the past, but they range in focus from developing methods to extract new insights about past ecological change (Le Moyne et al., 2023) through to the application of our understanding of past ecosystems to the management of conservation areas (Wilkinson et al., 2022).
The study by Le Moyne et al. (2023) examined modern reference material of nine grass species to determine how they might be better identified in the archaeological and palaeoecological record from the phytoliths they produce. Three of the studies use different lines of evidence of past ecological dynamics to explore change over the last few thousands of years.
The longest timescale perspective is provided by Milton et al. (2022) who investigated plant speciation in the Namib Desert. They combined a phylogenetic, morphometric and experimental genetic approaches to explore the evolutionary history of Senecio flavus and S. engerianus and produce palaeo-distribution models. From these data they suggest that the wider ranged species (S. flavus) is in fact derived from the smaller ranged parent (S. engerianus) and that this separation was caused by aridification during the Pleistocene.
The final paper, Wilkinson et al. (2022), take evidence for past abundances of elephants and compare them with the abundances in national parks today. They argue that modern elephant densities in national parks could be higher than the historical levels and that this could be detrimental to the flora and other fauna in the parks.
March 15, 2023
The course “Landscape Dynamics in an era of change: Learning from the past to face the future” took place in the Drakensberg Mountains of South Africa between 5 and 15 March 2023. The course was run by the Graduate School for Production Ecology and Resource Conservation (PERC) and participants were drawn from universities in the Netherlands and South Africa. The main goal of the course was to investigate the past and current dynamics of the region and predict possible futures in an inter- / trans-disciplinary context. Consequently the content of the course was incredibly diverse including: geology, geomorphology, palaeoecology, cultural history, vegetation studies, soil science, farming systems and forestry. These topics were integrated into four group projects centered on invasive species, rewilding, commercial farming and small scale farming.
Ecology of the past 