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Compatibility of regeneration silviculture and wild ungulates in a Mediterranean pine forest: implications for tree recruitment and woody plant diversity

  • Mario Velamazán
  • Alfonso San Miguel
  • Rafael Escribano
  • Ramón Perea
Original Paper
Part of the following topical collections:
  1. Mediterranean Pines

Abstract

Key message

Small-scale forest interventions (< 0.75 ha) promoted advanced regeneration and woody plant beta-diversity without increasing ungulate habitat use and detrimental browsing damage. Rubbing damage by ungulates was higher in the treated areas and no effect was found on woody plant alpha-diversity.

Context

Adapted silviculture is needed to promote forest persistence and plant diversity in the current context of wild ungulate overabundance.

Aims

This study examines the ungulate effects on tree recruitment and woody plant diversity after silviculture treatments (small-scale regeneration fellings on Pinus species).

Methods

We compared tree recruitment, browsing/rubbing damage, and woody plant diversity on 17 pairs of control/treated areas in an ungulate-dominated Pinus halepensis forest.

Results

Recruitment levels were significantly higher in the treated areas as compared to intact (control) plots only for large saplings and juveniles (> 130-cm high). Ungulates did not use the treated areas more often than the control plots but caused significantly greater rubbing damage in the treated areas. Silvicultural treatments did not have a significant effect on alpha woody plant diversity but did promote beta-diversity, with a 49.7% woody species turnover. We did not find any clear patterns indicating that the treated areas suffered heavier browsing damage across all woody plant species.

Conclusion

This study highlights that small-scale forest interventions (< 0.75 ha) are small enough to avoid greater habitat use and browsing damage by ungulates but sufficiently large to promote advanced regeneration (large saplings and juveniles), with the additional benefit of increasing woody plant heterogeneity and structural diversity.

Keywords

Ammotragus lervia Browsing Forest gap Pinus halepensis Rubbing damage Species turnover 

Notes

Acknowledgements

We would like to thank the staff of Sierra Espuña Natural Park for giving us permission and support to conduct this study. The Natural Park rangers (Evaristo Barranco, Eusebio Navarro, Miguel Cánovas, Francisco Torá, Francisco Esteban, and Juan A. Moreno), its Conservation Director (Andrés Muñoz Corbalán), Ignacio Álvarez, and Rodrigo Perea helped with fieldwork and data collection.

Compliance with ethical standards

Conflict of interests

The authors declare that they have no conflict of interest.

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Copyright information

© INRA and Springer-Verlag France SAS, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Departamento de Sistemas y Recursos NaturalesUniversidad Politécnica de MadridMadridSpain

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