Plant Ecology

, Volume 160, Issue 1, pp 25–42 | Cite as

The dynamics of mediterranean shrubs species over 12 years following perturbations

  • Leonor Calvo
  • Reyes Tárrega
  • Estanislao De Luis
Article

Abstract

The response of woody species to experimental burning, cutting andploughing was studied for a period of twelve years in a shrub community in NWSpain. The treatments represent the perturbations most frequently imposed bymanon these shrub communities throughout history. The response to burning is muchfaster than the response to cutting. The response to ploughing is slower due tothe regeneration mechanism that species use: germination. In general, thedominant species, Erica australis, influences theregeneration patterns of the rest of the species, which make up the community.There is a significant increase in the cover of woody species until the fourthyear, and of herbaceous species until the third year. Subsequently,Erica australis attains dominance, returning to itsoriginal spatial occupancy and cover values, removing the herbaceous speciesandnegatively influencing the growth of woody ones like Halimiumumbellatum, Halimium alyssoides and Quercuspyrenaica. Both Erica australis andChamaespartium tridentatum regenerated by sprouting in theburnt and cut plots, and by germination in the ploughed plot.Arctostaphylos uva-ursi only recovers after burning andploughing. Halimium alyssoides, Halimium umbellatum, Ericaumbellata and Calluna vulgaris regenerate bygermination in the three plots. Differences in cover values and spatialoccupancy during the first years of succession tend to be eliminated twelveyears after treatment and most of the species tend to recover their initialcover values. These shrubland communities have a high degree of resilience dueto the strong sprouting potential of the component species.

Burnt Cut Germination Mediterranean shrubland Ploughed Resprout 

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Leonor Calvo
    • 1
  • Reyes Tárrega
    • 1
  • Estanislao De Luis
    • 1
  1. 1.Area of Ecology. Faculty of BiologyUniversity of LeónLeónSpain

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