evidence: Land Use Changes and Ecosystem Services Supply in Transboundary River Basins. The Case of the Maroni River (French Guiana/Suriname) [...] The Maroni River in the Guiana Shield marks the border between French Guiana and Suriname. In the Maroni River Basin, as in many transboundary river basins of the world, socio-political borders criss-cross through natural ecosystems and hence intersect through ecological boundaries. As neighbouring countries share ecosystems, they also share inherent ecosystem processes, functions and, hence, the ecosystem services (ES) that these areas provide. However, life and land uses are changing in the river basin. A growing need for land, urbanization, a decrease of shifting cultivation patterns towards smallholder agriculture and a run for gold put pressure on natural ecosystems. [...] How to cite: Sieber, I. M., Campagne, S., and Burkhard, B.: Land Use Changes and Ecosystem Services Supply in Transboundary River Basins. The Case of the Maroni River (French Guiana/Suriname), EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-13353, https://doi.org/10.5194/egusphere-egu22-13353, 2022.