Subterranean environments contribute to three-quarters of classified ecosystem servicesMammola, Stefano (Avtor) Brankovits, David (Avtor) Di Lorenzo, Tiziana (Avtor) Amorim, Isabel R. (Avtor) Bancila, Raluca Ioana (Avtor) Bellvert, Adrià (Avtor) Bernard, Enrico (Avtor) Blomberg, Anna (Avtor) Mori, Nataša (Avtor) Zagmajster, Maja (Avtor) groundwaterhypogeannature valuedrinking waterfood productionbiotechnologygeothermal energysustainabilityecotourismcultural heritageBeneath the Earth’s surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sed-imentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and reg-ulates services critical to ecological health and human well-being. Subterranean ecosystems are integral to majorbiogeochemical cycles, sustain diverse surface habitats, and serve as the primary source of irrigation and drinking water.They also offer non-material benefits, including scientific discovery, education, and cultural practices. Yet, these contri-butions often go unrecognised, partly due to the lack of a unified synthesis of ecosystem services across terrestrial, fresh-water, and marine subterranean compartments. This gap limits effective communication of their value to scientists,practitioners, and the public. Through a systematic expert-based review, we show that subterranean ecosystems contrib-ute to up to 75% of classified ecosystem services. Notably, many of these contributions are described only qualitatively,lacking numerical or economic quantification. Next, we list examples of the main ecosystem services provided by subter-ranean systems to offer a global overview of their multifaceted value and vulnerability to environmental change. Webelieve this synthesis provides researchers and practitioners with concrete examples to communicate more effectivelythe importance of subterranean ecosystems to diverse audiences.20262026-03-02 10:25:42Neznano27949sl