Postfire regeneration of Aleppo pine – the temporal pattern of seedling recruitment

Daskalakou, Evangelia N.; Thanos, Costas A.

doi:10.1023/b:vege.0000029375.93419.f9

Cited by 51 publications

(40 citation statements)

References 21 publications

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“…The bulk of viable seeds (derived from the canopy seed bank) germinated after the rainy season during the following spring, and not in winter as occurs in other areas and species (Skordilis and Thanos 1995), since winters in this area are very harsh. Therefore, it can be confirmed that pine seed germination and subsequent establishment occur early in the natural post-fire vegetation succession (Daskalakou and Thanos 2004). Conditions immediately after the fire, with reduced inter-and intraspecific competition and favourable microscale conditions, enhanced seed release, germination and seedling establishment (Izhaki and Ne'eman 2000).…”

Section: Discussionmentioning

confidence: 95%

“…The post-fire regeneration of P. pinaster stands depends mainly on the effects of fire on pine seeds, which may be present in the soil seed bank or in the aerial seed bank, or come from nearby populations that have not been affected by fire (Ferrandis et al 1996;Daskalakou and Thanos 2004). This species, and in particular the Sierra del Teleno population, has a high percentage (82%) of serotinous cones (Velez 2000), that is, an aerial seed bank (Tapias et al 1998), with high percentage viability (almost 100%) over long periods of time (Tapias et al 2001(Tapias et al , 2004.…”

Section: Discussionmentioning

confidence: 99%

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Post-fire natural regeneration of a Pinus pinaster forest in NW Spain

et al. 2007

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The aim of this study was to analyse the regeneration of Pinus pinaster after wildfire and the possible inter and intraspecific competition during the first 3 years after fire. The study area is located in a P. pinaster stand in León province (NW Spain). Three study sites (S1, S2 and S3) were established in an area burned in 1998. In each site, three permanent plots (20 · 1 m) were marked. A total of 20 quadrats of 1 m 2 were studied in each plot. The number and height of pine seedlings 1, 2 and 3 years after fire was recorded in each quadrat. The regeneration of understorey vegetation in the quadrats was analysed concurrently. The significance of linear correlations among the number and height of seedlings and understorey vegetation cover was tested by calculating Pearson correlation coefficients.Seed germination and seedling emergence took place massively during the first year after the fire and decreased through time. The height growth was constant over the 3 years at site S2, while a growth burst could be observed between years 2 and 3 at sites S1 and S2. Also, pines from site S2 reached shorter maximum heights in all years compared to pines from site S1 and S3. The understorey vegetation showed minimal regeneration during the first year but then increased greatly with time. Woody understorey cover and total vegetation cover were negatively correlated with pine seedling density in sites with a high number of seedlings (e.g. S1 and S3). When woody cover, total cover and pine seedling density were low (e.g. S2), there were no correlations. There was a positive correlation between vegetation cover and the maximum height of Pinus seedlings in all study sites.

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Post-fire natural regeneration of a Pinus pinaster forest in NW Spain

et al. 2007

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“…The high production of mature and serotinous cones and viable seeds will promote high values of seedling density and survival during the second postfire year and ensure the future constitution of a very dense forest [4,5]. Furthermore, when seed dispersion occurs after a great fire, the combined effect of heat exposure and ash cover reduces the germination [18,27].…”

Section: Discussionmentioning

confidence: 99%

“…In Yeste, the lowest percentage of germination was registered in seeds from N and M cones in the t plots, whereas in the other treatments and cone types, the germination percentage was high (> 75%) and similar. As the cone response to opening is linked to the germination response of P. halepensis seeds with those from serotinous cones being more tolerant to fire related factors [15], the high germination average of serotinous cones in all treatments will ensure a great amount of seedlings during the second year after a new fire, although the timing of emergence and establishment of P. halepensis seedlings is correlated with the prevailing meteorological conditions [3,4]. In the semi-arid site (Calasparra), the average percentage of germination was in general not so high but the serotinous cones bore seeds with the highest germination percentage in T plots (similar to that of the control).…”

Section: Discussionmentioning

confidence: 99%

Reproduction de pinèdes de Pinus halepensis Mill. six ans après incendies et traitements sylvicoles

et al. 2007

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-In Spain, wildfires have increased during the last decades with Pinus halepensis forests being the most affected. Cone differentiation and the early flowering of this species in comparison to other native Spanish species, are traits considered as adaptations to postfire regeneration. The high recurrence of fires promotes a high increase in young and immature pine stands with low capability of regeneration. In this study, silvicultural treatments such as thinning and pruning were carried out 5 years after fire in eleven years old P. halepensis stands located in dry and semi-arid sites in SE Spain. The formation of male and female strobili, production of serotinous grey, mature brown and new green cones were recorded six years after treatments. Seed production and germination percentage were also tested. Results showed acceleration in cone and viable seed production in thinned plots, with some differences between sites being recorded. Serotinous cone production also increased as a result of this treatment.Pinus halepensis / thinning / pruning / postfire / reproduction Résumé -Reproduction de pinèdes de Pinus halepensis Mill. six ans après incendies et traitements sylvicoles. Les incendies forestiers sont en train d'augmenter ces dernières décennies en Espagne, et les forêts de Pinus halepensis sont les plus atteintes. Le fait qu'elles portent plusieurs types de cônes et la floraison précoce de cette espèce, par rapport aux autres espèces espagnoles, sont considérés comme des adaptations aux conditions postincendie. La récurrence élevée d'incendies favorise un nombre croissant de jeunes pinèdes à faible potentiel de régénération. Des traitements sylvicoles tels que l'éclaircie et l'élagage ont été effectués sur deux peuplements de P. halepensis régénérés cinq ans après l'incendie (onze ans d'âge), situés dans une localité sèche et dans une autre semi-aride du sud-est de l'Espagne. La formation de strobiles masculins et féminins, la production de cônes sérotineux mûrs et récents furent enregistrées six ans après les traitements. La production de semences et le pourcentage de germination ont aussi été testés. Les résultats ont démontré une accélération de la production de cônes et de semences viables dans les clairières, bien que certaines différences aient été constatées entre les localités. La production de cônes sérotineux a augmenté à la suite de ce traitement.Pinus halepensis / éclaircie / élagage / post-incendie / reproduction

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“…Accordingly, and in order to facilitate the objective collection of data on the ground, a number of field variables have been measured. In addition, there is a wide variety of sampling protocols depending on the type of survey (Daskalakou and Thanos 2004) that have been developed. The analysis of post-fire vegetation recovery and monitoring can be either structural (involving variables such as cover and spatial heterogeneity), which is based on visual or floristic assessments (species composition, richness, community diversity, etc.…”

Section: Field Based Post-fire Monitoringmentioning

confidence: 99%

Advances in Remote Sensing of Post-Fire Vegetation Recovery Monitoring - A Review

Gitas¹,

Mitri²,

Veraverbeke³

et al. 2012

Remote Sensing of Biomass - Principles and Applications

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Postfire regeneration of Aleppo pine – the temporal pattern of seedling recruitment

Abstract: The temporal dynamics of Pinus halepensis seedling emergence, density and survival were studied in detail during the first postfire year, in five Aleppo pine forests

Cited by 51 publications

References 21 publications

Post-fire natural regeneration of a Pinus pinaster forest in NW Spain

Post-fire natural regeneration of a Pinus pinaster forest in NW Spain

Reproduction de pinèdes de Pinus halepensis Mill. six ans après incendies et traitements sylvicoles

Advances in Remote Sensing of Post-Fire Vegetation Recovery Monitoring - A Review

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