Spatial gradient of temperature and potential vegetation feedback across Europe during the late Quaternary

Abstract : After the last glacial maximum (LGM; 18,000 years BP) plants migrated onto areas made free by the retreating ice sheets. Pollen records document changes in ecosystems, and are an important proxy for the reconstruction of climate parameters. Here, we quantify changes in January temperature (Tjan) over the past 14,000 years using 216 European pollen records. We used functional principal component analysis to evaluate the patterns of change over this period of time. Between 14 ka and 12 ka, Tjan records show comparable changes across Europe. After this time period, northwest and southeast Europe experienced differing trends in Tjan, trends that became pronounced by 9ka. The spatial gradient of Tjan records is well-correlated with the overall change from steppe to increasingly diverse forest ecosystems. In particular, differential incorporation of conifer vs. deciduous species into forest ecosystems, based on differential colonization out of refugia, likely resulted in albedo gradients over Europe that affected regional Tjan.
Type de document :
Article dans une revue
Climate Dynamics, Springer Verlag, 2008, 32 (2-3), pp.371-379
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-00268012
Contributeur : Avner Bar-Hen <>
Soumis le : lundi 31 mars 2008 - 08:56:42
Dernière modification le : mardi 11 octobre 2016 - 11:57:35

Identifiants

  • HAL Id : hal-00268012, version 1

Collections

Citation

Rachid Cheddadi, Avner Bar-Hen. Spatial gradient of temperature and potential vegetation feedback across Europe during the late Quaternary. Climate Dynamics, Springer Verlag, 2008, 32 (2-3), pp.371-379. <hal-00268012>

Partager

Métriques

Consultations de la notice

137