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Plant Ecology

, Volume 194, Issue 1, pp 109–119 | Cite as

Quercus and Pinus cover are determined by landscape structure and dynamics in peri-urban Mediterranean forest patches

  • Maria Guirado
  • Joan PinoEmail author
  • Ferran Rodà
  • Corina Basnou
Article

Abstract

Successional dynamics in Mediterranean forests have been modulated by anthropogenic disturbances during thousands of years, especially in areas densely populated since ancient times. Our objective is to determine whether pine tree cover (early-successional species) and oak tree cover (late-successional species), used as a surrogate of successional stage of peri-urban fragmented forests in the Vallès lowlands (Catalonia, NE, Spain), are primarily determined by (1) climate and topography; (2) anthropogenic disturbances; (3) patch structure; or (4) patch dynamics from 1956 to 1993. Quercus spp. and Pinus spp. tree cover were separately recorded on 252 randomly selected plots of 100 m2, within forest patches ranging in size from 0.25 to 218 ha. Multiple linear regressions indicated that forest patch history is the most important variable determining oak and pine tree cover: new forest patches showed higher pine and lower oak tree cover than recently split patches (i.e. those that became fragmented from large forest areas after 1956). Patches already existing as such in 1956 (pre-existent patches) showed higher pine cover than recently split patches. Oak cover increased and pine cover decreased with increasing forest connectivity of the patch. Finally, highly frequented forests were related to high cover of pines. Climatic and topographic variables were not significant. We conclude that pine and oak cover in these peri-urban forests are mainly determined by recent patch dynamics, but also by the spatial pattern of patches. However, human-induced disturbance can modulate this as there is some evidence for pine being associated with a high human frequentation.

Keywords

Anthropogenic disturbances Forest fragmentation Historical dynamics Pinus forests Patch structure Quercus forests 

Notes

Acknowledgements

This project was partly funded by Fundació Abertis. We gratefully acknowledge the financial support of the Agència de Gestió i d’Ajuts Universitaris i de Recerca (AGAUR) awarded to MG and the grant for postgraduates exchange of the Ministry of Education of Romania awarded to CB.

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Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • Maria Guirado
    • 1
  • Joan Pino
    • 1
    • 2
    Email author
  • Ferran Rodà
    • 1
    • 3
  • Corina Basnou
    • 1
  1. 1.Center for Ecological Research and Forestry Applications (CREAF)Autonomous University of BarcelonaBellaterraSpain
  2. 2.Plant Biology DepartmentUniversity of BarcelonaBarcelonaSpain
  3. 3.Unit of Ecology, Department of Animal and Plant Biology and EcologyAutonomous University of BarcelonaBellaterraSpain

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