Biodiversity and Conservation

, Volume 18, Issue 3, pp 605–619

Cork-oak woodlands as key-habitats for biodiversity conservation in Mediterranean landscapes: a case study using rove and ground beetles (Coleoptera: Staphylinidae, Carabidae)

  • Pedro Martins da Silva
  • Carlos A. S. Aguiar
  • Jari Niemelä
  • José Paulo Sousa
  • Artur R. M. Serrano
Original Paper

DOI: 10.1007/s10531-008-9527-9

Cite this article as:
da Silva, P.M., Aguiar, C.A.S., Niemelä, J. et al. Biodivers Conserv (2009) 18: 605. doi:10.1007/s10531-008-9527-9

Abstract

Land-use intensification in Mediterranean agro-forest systems became a pressure on biodiversity, concerning particularly the woodland sensitive species. In 2001, the effects of a land-use gradient from old-growth cork-oak forest to a homogeneous agricultural area were assessed using rove beetles as indicators in a Mediterranean landscape. The aim was to find which species were negatively affected by land-use intensification at the landscape level and whether they benefited from cork-oak patches occurring along the land-use gradient. A total of 3,196 rove beetles from 88 taxa were sampled from all landscape types. Agricultural area recorded significantly higher numbers of abundance and species richness in relation to the cork-oak mosaics, i.e. the old-growth forest and the managed agro-forest landscapes (montados). Moreover, 70% of rove beetle indicator species common enough to be tested by IndVal displayed their highest indicator value for agriculture, showing a lower number of woodland indicators in comparison to ground beetles. Nevertheless, one rove beetle taxon was considered a specialist of closed woodland mosaics while no specialist ground beetle was found for that landscape typology. Some rare rove beetle species were also important in typifying diversity patterns of old-growth cork-oak forests. Hence, future management in Mediterranean landscapes should take into account not only indicator species common enough to be tested by IndVal, but also rare and endemic species. Considering the added value of cork-oak woodland cover for sensitive rove and ground beetle diversity, the strengthening of cork-oak woodland connectivity seems to be a crucial management that is required in agricultural Mediterranean landscapes.

Keywords

Agro-forest mosaic Biodiversity conservation Epigaeic Coleoptera Indicator value Land-use intensification Quercussuber 

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Pedro Martins da Silva
    • 1
    • 3
  • Carlos A. S. Aguiar
    • 1
  • Jari Niemelä
    • 2
  • José Paulo Sousa
    • 3
  • Artur R. M. Serrano
    • 1
  1. 1.Centre for Environmental Biology, Faculty of SciencesUniversity of LisbonLisbonPortugal
  2. 2.Department of Biological and Environmental SciencesUniversity of HelsinkiHelsinkiFinland
  3. 3.IMAR-Coimbra Interdisciplinary Centre, Department of ZoologyUniversity of CoimbraCoimbraPortugal

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