Marchant, Robert, Boom, Arnoud, Behling, Hermann, Hooghiemstra, Henry, Melief, Bert, Geel, Bas Van, Hammen, Thomas Van der and Wille, Michael (2004) Colombian vegetation at the Last Glacial Maximum: a comparison of model‐ and pollen‐based biome reconstructions. Journal of Quaternary Science, 19 (7). pp. 721-732. DOI https://doi.org/10.1002/jqs.878.

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Abstract

Colombian vegetation, at the ecological level of the biome, is reconstructed at the Last Glacial Maximum (LGM) using two methods. A reconstruction of modern biomes shows that, for the majority of the sites, the pollen data accurately reflect the potential vegetation, even though much of the original vegetation has been transformed by agricultural practices. At 18 000 14C yr BP a generally cool and dry environment is reflected in biome assignments of cold mixed forests, cool evergreen forests and cool grassland/shrub, the latter extending to lower altitudes than presently recorded. Differential responses of the vegetation to climatic shifts are related to changes in moisture sources and the importance of edaphic control on the vegetation. Secondly, biomes at the LGM are also investigated by applying a vegetation model (BIOME-3) set to operate at CO2 levels of 200 ppmV and with climatic data from 12 meteorological stations that encompass a range of environments within Colombia. At lower altitudes it is apparent that moisture is the dominant control on driving vegetation change whereas temperature becomes more important at higher altitudes. The combined reconstruction of biome-scale vegetation dynamics in Colombia allows an understanding of the environmental controls on these to be developed that demonstrates the need to invoke different factors to explain the vegetation change rather than a uniform reduction in temperature or moisture.

Document Type:	Article
Programme Area:	PA Not Applicable
Research affiliation:
Refereed:	Yes
Open Access Journal?:	No
DOI:	https://doi.org/10.1002/jqs.878
ISSN:	0267-8179
Date Deposited:	17 Dec 2025 17:02
Last Modified:	17 Dec 2025 17:02
URI:	https://cris.leibniz-zmt.de/id/eprint/6053

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