Alfred Houngnon | Ecology of the past

A multi-model approach to the spatial and temporal characterization of the African Humid Period

July 25, 2025
WDG

Mapping Ancient Africa Quaternary International special issue article #7

Open access:

Gosling, W.D., Chevalier, M., Fischer, M.L., Holewijn, M., Finch, J., Gil-Romera, G., Hill, T., Houngnon, A., Leonardi, M., Manica, A., & Kaboth-Bahr, S. (2025). A multi-model approach to the spatial and temporal characterization of the African Humid Period. Quaternary International 744, 109933. https://doi.org/10.1016/j.quaint.2025.109933

Gosling, W.D., Chevalier, M., Lothar Fischer, M., Holewijn, M., Finch, J. M., Gil-Romera, G., Hill, T. R., Houngnon, A., Leonardi, M., Manica, A., & Kaboth-Bahr, S. (2025). Code from: A multi-model approach to the spatial and temporal characterization of the African Humid Period. Figshare. https://doi.org/10.6084/M9.FIGSHARE.29608400.V1

To find the complete list of articles in the Mapping Ancient Africa special issue of Quaternary International click here.

INQUA Fellowship journey: Alfred Hougnon (field work)

October 19, 2024
WDG

INQUA fellow Alfred Hougnon continues his research into past environmental change in the Dahomey Gap (Benin). In the fourth video documenting his progress a short background to the project, and insights into field work, are given. Field work took place near the Ewe-Adakplame forest in the south east of Benin and involved the recovery of sediments using a Russian corer. The video also shows how interactions and engagement with the local community was developed during the research expedition.

To find out more above Alfreds project read posts on:

To watch more videos about past environmental change visit the Ecology of the Past YouTube channel.

INQUA Fellowship Journey: Alfred Houngnon

May 16, 2024
WDG

Alfred Houngnon was awarded an INQUA Fellowship in 2024 to develop his work on past environmental change in the Dahomey Gap (western Africa). Through the project Alfred is making a series of videos about his fellowship journey. In the first video Alfred introduced his project and collaborators (click here to watch the first part). In the two latest instalments (below) Alfred explains: (i) one of his key methodological approaches (modern pollen trapping), and (ii) the modern vegetation of the region and current threats to the vegetation.

To watch more videos about past environmental change visit the Ecology of the Past YouTube channel.

INQUA Fellowship Award: Alfred Houngnon

December 20, 2023
WDG

I am delighted to be able to report that Alfred Houngnon (University of Abomey-Calavi, Benin) has been awarded an INQUA Fellowship for 2024 to develop his research into past environmental change in the Dahomey Gap. This research will link up my laboratory, at the Institute of Biodiversity & Ecosystem Dynamics (University of Amsterdam), and the group of Dr Mireille S.S. Toyi (Laboratory of Applied Ecology, University of Abomey-Calavi). Below, and in the associated video report, Alfred explains the project and what he hopes to achieve during the project.

The Dahomey Gap project is designed to gain new insights on the West African palaeoenvironments using pollen, charcoal and dung fungal spore records to reconstruct past vegetation, fire and animal abundances. These empirical data will then be compared against paleoclimate models. Specifically, we will explore the interactions between fire, animals and vegetation around the Ewe-Adakplame forest in the south east of Benin Republic and highlight the role humans would have previously played in the modification of the landscape for millennia.

Mapping Ancient Africa: Scientists – Alfred Houngnon

August 15, 2023
WDG

My name’s Alfred Houngnon, native of Benin Republic in West Africa. I hold an agricultural engineering degree in “Rangeland Management and Conservation” (Abomey-Calavi University). After gaining relevant field experience, I obtained a French Government Bursary to pursue an MSc degree in “Tropical Plant Biodiversity” at Montpellier (France). There, I learned about how to use indicators of past environmental and climatic change to give insights into projected future change.

It was a great scientific experience to participate in-person at the XXI INQUA Congress 2023 in Rome (Italy). This opportunity came under the supervision of William Gosling, and with the support of the Mapping Ancient Africa (MAA) project funded by INQUA’s Palaeoclimate commission (PALCOM). I have been working with Will for a number of years and published a first paper related to this work in 2021; a checklist of vascular plants from a ‘relict’ forest in Benin (Houngnon et al., 2021). A second manuscript is under development and was accepted for poster and oral presentation at INQUA 2023 congress that brought together around 4000 abstracts.

Interview 1: Alfred Houngnon (AGIR)

The bursary from the MAA project allowed me to also attend the MAA Rome workshops held at the Royal Netherlands Institute in Rome (12-13 July 2023). During the workshops, I was trained in two novel approaches to palaeoclimate modeling. The first based on interfacing paleoclimate models through the “pastclim” R package (Michela Leonardi), and the second on reconstructing palaeoclimates on the basis of ancient pollen data using the “CREST” program (Manu Chevalier). The workshops helped me to sharpen the communication of my ideas and in so doing strengthened the manuscript in preparation for submission to an international journal for publication.