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Selection: Lloret:F [6 articles] 

Publications by author Lloret:F.
 

Recurrent wildfires constrain long-term reproduction ability in Pinus halepensis Mill.

  
International Journal of Wildland Fire, Vol. 17, No. 5. (2008), 579, https://doi.org/10.1071/wf07078

Abstract

Increasing fire recurrence is a major problem threatening Mediterranean-type ecosystems. Moreover, this pattern is predicted to increase owing to global change. Although a reduction in the density and growth of post-fire regeneration is usually observed in recurrently burnt areas, the potential effects on reproductive ability have seldom been explored. The aim of the present study is to investigate whether structural changes induced by fire recurrence may constrain reproduction ability of Pinus halepensis forests. We conducted the current study in Catalonia (NE ...

 

A review of the combination among global change factors in forests, shrublands and pastures of the Mediterranean Region: beyond drought effects

  
Global and Planetary Change, Vol. 148 (January 2017), pp. 42-54, https://doi.org/10.1016/j.gloplacha.2016.11.012

Abstract

[Highlights] [::] Different global change factors combine causing unprecedented ecological effects. [::] Much more complex interactions arise when combinations occur together. [::] Drought should be considered when designing and applying management policies. [::] Conserving Mediterranean terrestrial ecosystems is a collective effort. [Abstract] Climate change, alteration of atmospheric composition, land abandonment in some areas and land use intensification in others, wildfires and biological invasions threaten forests, shrublands and pastures all over the world. However, the impacts of the combinations between global change factors are not well understood despite ...

 

Role of geographical provenance in the response of silver fir seedlings to experimental warming and drought

  
Tree Physiology, Vol. 36, No. 10. (October 2016), pp. 1236-1246, https://doi.org/10.1093/treephys/tpw049

Abstract

Changes in climate can alter the distribution and population dynamics of tree species by altering their recruitment patterns, especially at range edges. However, geographical patterns of genetic diversity could buffer the negative consequences of changing climate at rear range edges where populations might also harbour individuals with drought-adapted genotypes. Silver fir ( Abies alba Mill.) reaches its south-western distribution limit in the Spanish Pyrenees, where recent climatic dieback events have disproportionately affected westernmost populations. We hypothesized that silver fir populations from ...

 

Wildfires and landscape patterns in the Eastern Iberian peninsula

  
Landscape Ecology, Vol. 17, No. 8. (2002), pp. 745-759, https://doi.org/10.1023/a%3a1022966930861

Abstract

The relations between disturbance regime and landscape patterns have been developed from a theoretical perspective, but few studies have tested these relations when forces promoting opposing heterogeneity patterns are simultaneously operating on a landscape. This work provides quantitative evidence of these relations in areas dominated by human activity, showing that landscape heterogeneity decreases disturbance spread. In turn, disturbance introduces a source of landscape heterogeneity, but it is not enough to counterbalance the homogeneity trend due to agricultural abandonment. Land cover changes ...

 

Canopy recovery after drought dieback in holm-oak Mediterranean forests of Catalonia (NE Spain)

  
Global Change Biology, Vol. 10, No. 12. (December 2004), pp. 2092-2099, https://doi.org/10.1111/j.1365-2486.2004.00870.x

Abstract

Climate change is likely to produce more frequent and longer droughts in the Mediterranean region, like that of 1994, which produced important changes in the Quercus ilex forests, with up to 76% of the trees showing complete canopy dieback. At the landscape level, a mosaic of responses to the drought was observed, linked to the distribution of lithological substrates. Damage to the dominant tree species (Q. ilex) and the most common understorey shrub (Erica arborea) was more noticeable on the compact ...

 

Satellite evidence of decreasing resilience in Mediterranean plant communities after recurrent wildfires

  
Ecology, Vol. 83, No. 8. (August 2002), pp. 2293-2303, https://doi.org/10.1890/0012-9658(2002)083[2293:seodri]2.0.co;2

Abstract

Vegetation recovery from fire has been widely studied at the stand level in many types of terrestrial ecosystems, but factors controlling regeneration at the landscape scale are less well known. Over large areas, fire history, climate, topography, and dominant type of vegetation may affect postfire response. Increased fire frequency, as is occurring in some mediterranean-type ecosystems, may reduce ecosystem resilience, i.e., the ability to recover the pre-disturbance state. We used the Normalized Difference Vegetation Index (NDVI) from Landsat imagery to monitor ...

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