6 research outputs found
Pollen-based biome reconstructions for Latin America: applications at a range of spatial and temporal scales and links to climate and vegetation model output.
Pollen-based biome reconstructions for Latin America at 0, 6000 and 18 000 radiocarbon years ago
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Pollen-based biome reconstructions for Latin America at 0, 6000 and 18000 radiocarbon years
The biomisation method is used to reconstruct Latin American vegetation at 6000±500 and 18 000±1000 radiocarbon years before present (14C yr BP) from pollen data. Tests using modern pollen data from 381 samples derived from 287 locations broadly reproduce potential natural vegetation. The strong temperature gradient associated with the Andes is recorded by a transition from high altitude cool grass/shrubland and cool mixed forest to mid-altitude cool temperate rain forest, to tropical dry, seasonal and rain forest at low altitudes. Reconstructed biomes from a number of sites do not match the potential vegetation due to local factors such as human impact, methodological artefacts and mechanisms of pollen representivity of the parent vegetation