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Selection: Pausas:JG [9 articles] 

Publications by author Pausas:JG.
 

Bark thickness and fire regime

  
Functional Ecology, Vol. 29, No. 3. (1 March 2015), pp. 315-327, https://doi.org/10.1111/1365-2435.12372

Abstract

[::] Bark is a vital and very visible part of woody plants, yet only recently has bark characteristics started to be considered as key traits structuring communities and biomes. Bark thickness is very variable among woody plants, and I hypothesize that fire is a key factor selecting for a thick bark, and thus, at the global scale, a significant proportion of the variability in bark thickness is explained by the variability in fire regimes. Previous research has focused on the importance ...

 

The lanky and the corky: fire-escape strategies in savanna woody species

  
Journal of Ecology, Vol. 101, No. 5. (1 September 2013), pp. 1265-1272, https://doi.org/10.1111/1365-2745.12118

Abstract

[::] Fire and herbivory are the main disturbances shaping the structure of savannas. In these ecosystems, the key strategies by which woody plants escape fire are either early height growth (the lanky strategy) or early bark growth (the corky strategy). We hypothesize that the dominance of each strategy in different savannas depends on the prevailing disturbance regimes. Given the importance of herbivory in afrotropical savanna, we expect woody plants in these savannas to be taller and have thinner barks (the lanky ...

 

Fire as an evolutionary pressure shaping plant traits

  
Trends in Plant Science, Vol. 16, No. 8. (August 2011), pp. 406-411, https://doi.org/10.1016/j.tplants.2011.04.002

Abstract

Traits, such as resprouting, serotiny and germination by heat and smoke, are adaptive in fire-prone environments. However, plants are not adapted to fire per se but to fire regimes. Species can be threatened when humans alter the regime, often by increasing or decreasing fire frequency. Fire-adaptive traits are potentially the result of different evolutionary pathways. Distinguishing between traits that are adaptations originating in response to fire or exaptations originating in response to other factors might not always be possible. However, fire ...

 

Resprouting of Quercus suber in NE Spain after fire

  
Journal of Vegetation Science, Vol. 8, No. 5. (October 1997), pp. 703-706, https://doi.org/10.2307/3237375

Abstract

Many Mediterranean species have evolved strategies that allow them to survive periodic wildfires. Quercus suber trees resprout after fire, some from stem buds and others from basal buds only. In the former case the canopy recovers quickly. In the latter case the stem dies but the tree survives and regrows from basal sprouts. The probability of stem death and the degree of height recovery were studied after a fire in a Q. suber forest in NE Spain using logistic regression analysis. ...

 

Cork oak woodlands on the edge: ecology, adaptive management, and restoration

  
(2012)

Abstract

[Excerpt] Scientific research on cork oak and the ecosystems where it thrives is patchy. Results are scattered and usually limited to a single discipline, such as genetics, silviculture, or the physical properties of cork, and the few broad, interregional, multidisciplinary treatments are out of date. The present book is the result of a 4-year European Commission–funded research program (Conservation and Restoration of European Cork Oak Woodlands [.CREOAK], QLKS-CT-2002-01594) that ran from 2002 to 2006. Consortium members included researchers and engineers from ...

 

Mediterranean cork oak savannas require human use to sustain biodiversity and ecosystem services

  
Frontiers in Ecology and the Environment, Vol. 9, No. 5. (10 June 2011), pp. 278-286, https://doi.org/10.1890/100084

Abstract

Mediterranean cork oak savannas, which are found only in southwestern Europe and northwestern Africa, are ecosystems of high socioeconomic and conservation value. Characterized by sparse tree cover and a diversity of understory vegetation – ranging from shrub formations to grasslands – that support high levels of biodiversity, these ecosystems require active management and use by humans to ensure their continued existence. The most important product of these savannas is cork, a non-timber forest product that is periodically harvested without requiring tree ...

 

Resprouting of Quercus suber in NE Spain after fire

  
Journal of Vegetation Science, Vol. 8, No. 5. (1997), pp. 703-706, https://doi.org/10.2307/3237375

Abstract

Abstract. Many Mediterranean species have evolved strategies that allow them to survive periodic wildfires. Quercus suber trees resprout after fire, some from stem buds and others from basal buds only. In the former case the canopy recovers quickly. In the latter case the stem dies but the tree survives and regrows from basal sprouts. The probability of stem death and the degree of height recovery were studied after a fire in a Q. suber forest in NE Spain using logistic regression ...

 

Are wildfires a disaster in the Mediterranean basin? – A review

  
International Journal of Wildland Fire, Vol. 17, No. 6. (2008), 713, https://doi.org/10.1071/wf07151

Abstract

Evolutionary and paleoecological studies suggest that fires are natural in the Mediterranean basin. However, the important increase in the number of fires and area burned during the 20th century has created the perception that fires are disasters. In the present paper, we review to what extent fires are generating ecological disasters in the Mediterranean basin, in view of current fire regimes and the long-term human pressure on the landscapes. Specifically, we review studies on post-fire plant regeneration and soil losses. The ...

 

Species richness patterns in the understorey of Pyrenean Pinus sylvestris forest

  
Journal of Vegetation Science, Vol. 5, No. 4. (1994), pp. 517-524, https://doi.org/10.2307/3235978

Abstract

Abstract. Species richness was studied in the understorey of natural Pinus sylvestris forest in the eastern Pyrenees. Understorey plant species were grouped in three structural groups as woody species, herbs and mosses. The response curves of total species richness and species richness of each structural group were fitted against environmental and stand-structural parameters, using Generalized Linear Models. The results suggested that, to predict species richness, environmental parameters were more important than tree-canopy structural parameters, in particular incoming radiation and soil ...

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