Resumen: Lakes have a disproportionate effect on the global carbon (C) cycle relative to their area, mediating C transfer from land to atmosphere, and burying organic-C in their sediments. The magnitude and temporal variability of C burial is, however, poorly constrained, and the degree to which humans have influenced lake C cycling through landscape alteration has not been systematically assessed. Here, we report global and biome specific trajectories of lake C sequestration based on 516 lakes and show that some lake C burial rates (i.e., those in tropical forest and grassland biomes) have quadrupled over the last 100 years. Global lake C-sequestration (~0.12 Pg year-1) has increased by ~72 Tg year-1 since 1900, offsetting 20% of annual CO2 freshwater emissions rising to ~30% if reservoirs are included and contributing to the residual continental C sink. Nutrient availability explains ~70% of the observed increase, while rising temperatures have a minimal effect. Idioma: Inglés DOI: 10.1126/sciadv.aaw2145 Año: 2020 Publicado en: Science 6, 16 (2020), eaaw2145 [8 pp] ISSN: 0036-8075 Factor impacto JCR: 47.728 (2020) Categ. JCR: MULTIDISCIPLINARY SCIENCES rank: 2 / 71 = 0.028 (2020) - Q1 - T1 Factor impacto SCIMAGO: 12.555 - Multidisciplinary (Q1) - History and Philosophy of Science (Q1)