This special issue contains products emerging from the PAGES-supported meeting "Abrupt Climate Changes and Environmental Responses in tropical South America - LaAcer I" held 28 November to 1 December 2012 in Bogota, Colombia.
> Millennial-scale vegetation changes in the tropical Andes using ecological grouping and ordination methods [p.697]Urrego DH, Hooghiemstra H, Rama-Corredor O, Martrat B, Grimalt JO, Thompson L, Bush MB, González-Carranza Z, Hanselman J, Valencia B & Velásquez-Ruiz C
> Geochronological database and classification system for age uncertainties in Neotropical pollen records [p.387]Flantua SGA, Blaauw M & Hooghiemstra H
> Parallelisms between sea surface temperature changes in the western tropical Atlantic (Guiana Basin) and high latitude climate signals over the last 140 000 years [p.1297]Rama-Corredor O, Martrat B, Grimalt JO, López-Otalvaro GE, Flores JA & Sierro F
> Thermal evolution of the western South Atlantic and the adjacent continent during Termination 1 [p.915]Chiessi CM, Mulitza S, Mollenhauer G, Silva JB, Groeneveld J & Prange M
> Effects of past climate variability on fire and vegetation in the cerrãdo savanna of the Huanchaca Mesetta, NE Bolivia [p.835]Maezumi SY, Power MJ, Mayle FE, McLauchlan KK & Iriarte J