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Reconstructing past arboreal cover based on modern and fossil pollen data: A statistical approach for the Gredos Range (Central Spain)

Abstract: Quantifying and reconstructing past vegetation changes is an important step to fully understand human-environment interactions in the past. In this study we present a reconstruction of arboreal cover of six study sites in the Gredos Range (central Spain) over the last 3000?yr based on multivariate statistical analysis (cluster analysis and non-metric multidimensional scaling, NMDS) of 186 modern pollen samples, modern vegetation data and six detailed fossil pollen records. The integrated approach allows distinguishing eight modern vegetation communities and linking the fossil pollen records with these vegetation communities as modern analogues. The information of the arboreal cover of the modern pollen sites was used to estimate the past arboreal cover of the fossil pollen sites in the Gredos Range. This estimated arboreal cover shows a higher level of landscape openness than suggested by the original pollen percentages data. Our results show that the evolution of the arboreal cover through time differs along an altitudinal gradient, with a decrease in arboreal cover during the Roman and Visigoth periods (2000?1240?cal BP) at low altitudes and only during the Christian/Feudal period (850?500?cal BP) at high altitudes. The applied methodology, integrating fossil pollen data with modern pollen and vegetation data in one NMDS, allows reconstructing past arboreal cover in a quantitative way.

 Fuente: Review of Palaeobotany and Palynology Volume 255, August 2018, Pages 1-13

Editorial: Elsevier

 Fecha de publicación: 01/08/2018

Nº de páginas: 13

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.revpalbo.2018.04.007

ISSN: 0034-6667

 Proyecto español: HAR2013-43701-P

Url de la publicación: https://doi.org/10.1016/j.revpalbo.2018.04.007

Autoría

BROOTHAERTS, NILS

ROBLES-LÓPEZ, SANDRA

ABEL-SCHAAD, DANIEL

ALBA-SÁNCHEZ, FRANCISCA

LUELMO-LAUTENSCHLAEGER, REYES

GLAIS, ARTHUR

LÓPEZ-SÁEZ, JOSÉ ANTONIO