Vigour of Post-Fire Resprouting by Quercus Coccifera L.

Malanson, George P.; Trabaud, L.

doi:10.2307/2260598

Cited by 123 publications

(82 citation statements)

References 35 publications

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“…Fire intensity is considered to be one of the most significant parameters for recognition of the fire regime of a specific region. Fire intensity affects resprouting potential, the number of viable seeds after a fire, soil nutrient status and post-burn species and characteristics (DeBano et al, 1979;Malanson and Trabaud, 1988). On the other hand, fire severity integrates physical, chemical and biological changes occurring in a given area as a consequence of fire (White et al, 1996) and is related to plant damage.…”

Section: Rationalementioning

confidence: 99%

“…This feature, together with differences observed in the time evolution of lack of greenness in the two regions, raises the possibility of the existence of a sensitivity of vegetation recovery in each Region to different factors. In fact, besides depending on changes in density of vegetation, the spatial variability within each considered region may be related to a number of factors, which include terrain slopes (Kutiel, 1994;Inbar et al, 1998;Pausas et al, 1999;Cerdà and Doerr, 2005), climatic trends and meteorological regimes (DeLuis et al, 2001(DeLuis et al, , 2004, fire frequency (Röder et al, 2008), and fire intensity and severity (Malanson and Trabaud, 1988;Zammit andZedeler, 1988, White et al, 1996). The available dataset of MVC-NDVI allows for the assessing and comparing of the impact on vegetation recovery of two indicators of preand post-fire vegetation conditions, namely vegetation density and fire damage.…”

Section: Becausementioning

confidence: 99%

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Post-fire vegetation recovery in Portugal based on spot/vegetation data

Gouveia

DaCamara

Trigo

2010

Nat. Hazards Earth Syst. Sci.

102

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Abstract.A procedure is presented that allows identifying large burned scars and the monitoring of vegetation recovery in the years following major fire episodes. The procedure relies on 10-day fields of Maximum Value Composites of Normalized Difference Vegetation Index (MVC-NDVI), with a 1 km×1 km spatial resolution obtained from the VEG-ETATION instrument. The identification of fire scars during the extremely severe 2003 fire season is performed based on cluster analysis of NDVI anomalies that persist during the vegetative cycle of the year following the fire event. Two regions containing very large burned scars were selected, located in Central and Southwestern Portugal, respectively, and time series of MVC-NDVI analysed before the fire events took place and throughout the post-fire period. It is shown that post-fire vegetation dynamics in the two selected regions may be characterised based on maps of recovery rates as estimated by fitting a monoparametric model of vegetation recovery to MVC-NDVI data over each burned scar. Results indicated that the recovery process in the region located in Central Portugal is mostly related to fire damage rather than to vegetation density before 2003, whereas the latter seems to have a more prominent role than vegetation conditions after the fire episode, e.g. in the case of the region in Southwestern Portugal. These differences are consistent with the respective predominant types of vegetation. The burned area located in Central Portugal is dominated by Pinus Pinaster whose natural regeneration crucially depends on the destruction of seeds present on the soil surface during the fire, whereas the burned scar in Southwestern Portugal was populated by Eucalyptus that may quickly re-sprout from buds after fire. Besides its simplicity, the monoparametric model of vegeta-

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Section: Rationalementioning

confidence: 99%

Section: Becausementioning

confidence: 99%

Post-fire vegetation recovery in Portugal based on spot/vegetation data

Gouveia

DaCamara

Trigo

2010

Nat. Hazards Earth Syst. Sci.

102

View full text Add to dashboard Cite

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“…Although it has sometimes been related to an increase in plant water potential, it is still controversial whether soil water, leaf water content (Gollan et al, 1985) or hydraulic conductivity (Meinzer and Grantz, 1990) controls maximum leaf conductance. Malanson and Trabaud (1988) and Mesleard and Lepart (1989) (fig 1 c) enables them to achieve higher photosynthesis rates than controls. Higher photosynthetic capacity is predictable since it is highly correlated with leaf N content (Evans and Seemann, 1989), which was higher in resprouts.…”

Section: Discussionmentioning

confidence: 99%

Influence of fire and tree-fell on physiological parameters in Quercus ilex resprouts

et al. 1996

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“…At the level of the individual plant, resprouting is a dichotomous event, in the sense that after a fire, the plant either resprouts or dies [30]. If it resprouts, this happens immediately after the fire: Malanson and Trabaud (1988) [31] suggest that if no resprouts have been observed during the first eight weeks after the fire, the individual is dead.…”

Section: Preparation and Effectiveness Periodsmentioning

confidence: 99%

“…At the level of the forest stand, locally unfavourable environmental conditions or high fire intensity might delay this RM (or the plants' "resprouting vigour", [31]). However, the negative impact of these factors appears to be relevant only in the first months to years after a fire.…”

Section: Preparation and Effectiveness Periodsmentioning

confidence: 99%

Impacts of Land Management on the Resilience of Mediterranean Dry Forests to Fire

et al. 2016

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Abstract:Wildfires have always been a part of the history of Mediterranean forests. However, forests are not always certain to regenerate after a wildfire. Whether they do depends on many factors, some of which may be influenced by land management activities. Failure to regenerate will cause a regime shift in the ecosystem, reducing the provision of ecosystem services and ultimately leading to desertification. How can we increase the resilience of Mediterranean forests to fire? Our approach to answering this question was twofold: first, we reviewed the literature to investigate chains of processes that allowed forests to regenerate (which we label Regeneration Mechanisms, or RMs); and second, we assessed the impact of selected management practices documented in the WOCAT database on these RMs. For the assessment, we evaluated the relation between the benefits and disadvantages of the land management practices on the one hand, and the hindering and supporting factors of the RMs on the other. We identified three distinct RMs that enable Mediterranean forests to recover, as well as the time frame before and after a fire in which they are at work, and factors that can hinder or support resilience. The three RMs enabling a forest to regenerate after a fire consist of regeneration (1) from a seed bank; (2) from resprouting individuals; and (3) from unburned plants that escaped the fire. Management practices were grouped into four categories: (1) fuel breaks; (2) fuel management; (3) afforestation; and (4) mulching. We assessed how and under what conditions land management modifies the ecosystem's resilience. The results show that land management influences resilience by interacting with resilience mechanisms before and after the fire, and not just by modifying the fire regime. Our analysis demonstrates a need for adaptive-i.e., context-and time-specific-management strategies.

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Vigour of Post-Fire Resprouting by Quercus Coccifera L.

Cited by 123 publications

References 35 publications

Post-fire vegetation recovery in Portugal based on spot/vegetation data

Post-fire vegetation recovery in Portugal based on spot/vegetation data

Influence of fire and tree-fell on physiological parameters in Quercus ilex resprouts

Impacts of Land Management on the Resilience of Mediterranean Dry Forests to Fire

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