Analysis of Spatial Patterns of Oak Decline in Cork Oak Woodlands in Mediterranean Conditions. Costa, A., Pereira, H., & Madeira, M. 67(2):204.
Analysis of Spatial Patterns of Oak Decline in Cork Oak Woodlands in Mediterranean Conditions [link]Paper  doi  abstract   bibtex   
[::] Cork oak mortality is a recurrent problem in southwestern Portugal. Despite the perception of increasingly visible damage in oak woodlands on drought-prone sites, the role of the various environmental factors in their decline is not clear. [::] To describe the spatial patterns of cork oak (Quercus suber L.) mortality, a cork oak mortality index (MI) was determined for each landscape feature (agroforestry system, soil type, slope and aspect) using a GIS approach. To achieve this goal, a logistic regression model was formulated analyzing interactions between landscape attributes and allowing a prediction of cork oak mortality. [::] Maximum values of MI were found in (i) shrublands and open woodlands with shrub encroachment (MI 6 and 3, respectively), where competition for soil water between tree and understory increases; and (ii) on lower slopes in the rounded hilltops and smooth hillsides or shallow soils where access to groundwater resources during summer drought is difficult. [::] The model highlighted the importance of the agroforestry systems on cork oak mortality and may be used to identify sensitive areas where mitigation actions should be employed in a scenario of increasing drought severity in these Mediterranean ecosystems.
@article{costaAnalysisSpatialPatterns2010,
  title = {Analysis of Spatial Patterns of Oak Decline in Cork Oak Woodlands in {{Mediterranean}} Conditions},
  author = {Costa, Augusta and Pereira, Helena and Madeira, Manuel},
  date = {2010},
  journaltitle = {Annals of Forest Science},
  volume = {67},
  pages = {204},
  doi = {10.1051/forest/2009097},
  url = {https://doi.org/10.1051/forest/2009097},
  abstract = {[::] Cork oak mortality is a recurrent problem in southwestern Portugal. Despite the perception of increasingly visible damage in oak woodlands on drought-prone sites, the role of the various environmental factors in their decline is not clear. [::] To describe the spatial patterns of cork oak (Quercus suber L.) mortality, a cork oak mortality index (MI) was determined for each landscape feature (agroforestry system, soil type, slope and aspect) using a GIS approach. To achieve this goal, a logistic regression model was formulated analyzing interactions between landscape attributes and allowing a prediction of cork oak mortality. [::] Maximum values of MI were found in (i) shrublands and open woodlands with shrub encroachment (MI 6 and 3, respectively), where competition for soil water between tree and understory increases; and (ii) on lower slopes in the rounded hilltops and smooth hillsides or shallow soils where access to groundwater resources during summer drought is difficult. [::] The model highlighted the importance of the agroforestry systems on cork oak mortality and may be used to identify sensitive areas where mitigation actions should be employed in a scenario of increasing drought severity in these Mediterranean ecosystems.},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13555444,agroforestry,disturbances,droughts,forest-resources,oak-decline,portugal,quercus-suber},
  number = {2}
}

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