| Autor: |
Castor Muñoz Sobrino, Pablo Ramil-Rego, Luis Gómez-Orellana |
| Předmět: |
|
| Zdroj: |
Vegetation History & Archaeobotany; May2007, Vol. 16 Issue 4, p223-240, 18p |
| Abstrakt: |
Abstract  Northwest Iberia (Spain and Portugal) is a large and complex territory which is currently considered a contact border between two different biogeographical regions, the Eurosiberian and the Mediterranean. Such complexity is clearly influenced by several main factors, namely the winding mountain ranges of this region and their position on the peninsula, which result in several markedly different environments coexisting within distances of only a few kilometres apart, such as extremely oceanic or continental climates and high mountain areas or inland basins. This intricacy might also be reflected in the postglacial palaeoecological reconstructions which have been made for different mountain areas of northwest Iberia. Several isolated pollen diagrams from key sites in the area which have been published during the last decades have been questioned, because they show tendencies or chronologies apparently incompatible with global dynamics affecting the North Atlantic. In this paper we explore the possible integration of the biostratigraphies and chronologies of several selected pollen sites in this region. Northwest Iberia as a whole has been firstly divided into several more homogeneous biogeographical units, and high quality pollen sequences from each unit were selected to obtain reconstructions of local dynamics at each site and also approximations of the regional tendencies in each unit. Subsequently, the correlation between the different regional tendencies and their coherence in relation to the global climatic models performed for the North Atlantic is discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink