Die Erholunsgzone vor dem D4 Gebäude über dem Brunnen.

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New study published: "Downstream impacts of mines on agriculture in Africa"

November 2025

Our WU PhD candidate Maximilian Heinze and recent graduates Lukas Vashold and Nikolas Kuschnig (Monash University), along with Gustav Pirich (University of Zürich), have published a new study “Downstream impacts of mines on agriculture in Africa” in the Journal of Development Economics (open access at https://doi.org/10.1016/j.jdeveco.2025.103671).

The paper provides causal evidence of how water pollution from mining operations affects vegetation and agricultural productivity across Africa. Using a quasi-experimental research design based on river networks, the authors compare satellite-derived vegetation indices in upstream and downstream areas relative to mine locations. The analysis finds that mining significantly reduces peak vegetation by 1.3–1.5%, with particularly severe effects found in fertile regions and areas dominated by gold mining, and affects roughly 74,000 km² of croplands across the continent. These reductions correspond to estimated annual cereal losses of 91,000–205,000 tons, equivalent to 5.4% to 12.1% of the World Food Programme’s food aid distributed in Africa in 2023.

Example of two Angolian mine sites (dotted, and labeled with '0') and their upstream and downstream basin systems (left), as well as measurements of the Enhanced Vegetation Index (EVI)

© Vashold et al. 2025
Welcome!
5 new Phd Candidates starting in 2025/26

© WU Vienna

October 2025


We are very happy to welcome five new students to our PhD.

Daniel Enderle, Simay KücükkolbasiInes Kusmenko (back row, left to right) and Gabriel Konecny and Mikhail Martianov (sitting, left to right) are joining us from this year onwards.

Welcome to our department and the PhD Label Economics!

Defensio Dissertationis of Anna Matzner
Anna Matzner

© WU TV

September 2025

On Thursday, 18 September 2025 at 2 pm, the Defensio Dissertationis of Anna Matzner will take place in the department meeting room D4.2.008. She will present her research on “Essays in Macroeconomics”.

Doctoral Committee: Harald Badinger (WU Wien), Katrin Rabitsch (WU Wien), Paul Pichler (Universität Wien)

Defensio Dissertationis of Ulrich Wohak
Ulrich Wohak

© WU TV

August 2025

On Wednesday, August 20th  at 3 pm, the Defensio Dissertationis of Ulrich Wohak will take place in the department meeting room D4.2.008.

He will present his research on the topic of “Essays in Applied Economics”.

Doctoral Committee: Florian Szücs (WU), Peter Brummund (University of Alabama) and Klaus Gugler (WU)

Defensio Dissertationis of Lukas Vashold
Lukas Vashold

© WU TV

August 2025

On Monday, August 4th at 3pm, the Defensio Dissertationis of Lukas Vashold will take place in the department meeting room D4.2.008. He will present his research on the topic „Essays in Environmental Economics"

Doctoral Committee: Jesus Crespo-Cuaresma (WU), Juliano Assuncao (Pontifical Catholic University of Rio de Janeiro) and Michael Obersteiner (University of Oxford)

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