Quercus suber cork as a keystone trait for fire response: A flammability analysis using bench and field scales

Molina, Juan Ramón; Prades, Cristina; Lora, Á.; Silva, Francisco Rodríguez y

doi:10.1016/j.foreco.2018.07.041

Cited by 12 publications

(7 citation statements)

References 32 publications

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“…However, the copying mechanisms of Mediterranean shrubs to altered patterns of precipitation can be inconsistent, either advancing or delaying flowering [27]. Furthermore, the timing of the understory phenological events affects the interactions between tree canopy and understory [22,29,30], which are particularly important in the ability of these ecosystems as a carbon sink [31].…”

Section: Introductionmentioning

confidence: 99%

Using Digital Photography to Track Understory Phenology in Mediterranean Cork Oak Woodlands

et al. 2021

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Monitoring vegetation is extremely relevant in the context of climate change, and digital repeat photography is a method that has gained momentum due to a low cost–benefit ratio. This work aims to demonstrate the possibility of using digital cameras instead of field spectroradiometers (FS) to track understory vegetation phenology in Mediterranean cork oak woodlands. A commercial camera was used to take monthly photographs that were processed with the Phenopix package to extract green chromatic coordinates (GCC). GCC showed good agreement with the normalized difference vegetation index (NDVI) and normalized difference water index (NDWI) obtained with FS data. The herbaceous layer displayed a very good fit between GCC and NDVI (coefficient of determination, represented by r2 = 0.89). On the contrary, the GCC of shrubs (Cistus salviifolius and Ulex airensis) showed a better fit with NDWI (r2 = 0.78 and 0.55, respectively) than with NDVI (r2 = 0.60 and 0.30). Models show that grouping shrub species together improves the predictive results obtained with ulex but not with cistus. Concerning the relationship with climatic factors, all vegetation types showed a response to rainfall and temperature. Grasses and cistus showed similar responses to meteorological drivers, particularly mean maximum temperature (r = −0.66 and −0.63, respectively). The use of digital repeat photography to track vegetation phenology was found to be very suitable for understory vegetation with the exception of one shrub species. Thus, this method proves to have the potential to monitor a wide spectrum of understory vegetation at a much lower cost than FS.

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Section: Introductionmentioning

confidence: 99%

Using Digital Photography to Track Understory Phenology in Mediterranean Cork Oak Woodlands

et al. 2021

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“…Catry et al (2010), afirmam que lesões causadas pós incêndios devido a altas intensidades do fogo, ampliam a mortalidade dos indivíduos no povoamento florestal, especialmente por ocasionarem aberturas cambiais. Trabalhos realizados por Molina et al (2018), avaliando incêndio em Quercus suber, apontaram que após a passagem do fogo, a incidência de insetos aumentou significativamente, ampliando a mortalidade das árvores, favorecida pela exposição cambial. Soares (1985) demonstra que o efeito do fogo sobre as árvores, com relação ao ataque de patógenos, se estende por anos após o incêndio.…”

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AVALIAÇÃO DO DETRIMENTO CAUSADO POR INCÊNDIO EM PLANTIO DE Pinus caribaea var. hondurensis, EM IPAMERI-GO

Silva¹,

Mariano²,

Souza³

et al. 2019

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RESUMO Os incêndios florestais estão entre os principais fatores ameaçadores às florestas e sua produção, com potencial de destruição total do plantio. Para se conhecer os efeitos do fogo em povoamento florestal, o propósito deste estudo foi avaliar o detrimento ocorrido no plantio de Pinus caribaea var. hondurensis após a ocorrência de incêndio. Em relação a determinação do nível de queima, foram considerados quatro níveis de queima, da seguinte forma: Nível de Queima I: Incêndio superficial, sem crestamento de forma letal nas copas; Nível de Queima II: Incêndio também de forma superficial, mas, com crestamento parcial das copas; Nível de Queima III: As copas são parcialmente consumidas pelas chamas e Nível de Queima IV, onde ocorre o consumo total das copas pelas chamas, com letalidade do câmbio. As intensidades nos níveis de queima foram classificadas como altas. Os resultados indicaram influência das condições climáticas e idade dos indivíduos para o desenvolvimento do fogo. O conhecimento dos parâmetros de intensidade do fogo permitiu avaliar os danos provocados e possibilitaram a elaboração de técnicas de silvicultura preventiva, com ações mitigatórias do estabelecimento, desenvolvimento e efeitos de incêndios em povoamento florestal. PALAVRAS-CHAVE: Altura de crestamento, Danos de fogo, nível de queima.

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“…The results obtained in the mass loss calorimeter were compared with those obtained in PB conducted in the field (Fig. 6) for a more realistic representation of how bark is affected by fire (Molina et al, 2018). No significant results were observed in relation to the cambium damage and BT or CV.…”

Section: Discussionmentioning

confidence: 99%

“…The established protocols by Della Rocca et al ( 2018) and with the mass loss calorimeter (MLC), in a horizontal configuration, were used to characterize the resistance of bark to fire. Nevertheless, a vertical configuration (Dehane et al, 2015) seemed more suitable for simulating heating conditions and bark position in the field (Molina et al, 2018). The heat fluxes selected in the laboratory test covered a wide temperature range, simulating conditions observed in prescribed burning or in a wildfire and the bark thickness range sampled allowed tested the resistance threshold of Pinus nigra bark.…”

Section: Introductionmentioning

confidence: 99%

“…The heat fluxes selected in the laboratory test covered a wide temperature range, simulating conditions observed in prescribed burning or in a wildfire and the bark thickness range sampled allowed tested the resistance threshold of Pinus nigra bark. However, because laboratory assessment of bark fire resistance is limited by the scale of the experiment, data from prescribed burning trials were required for comparison with data obtained in laboratory (Molina et al, 2018). Known the effectiveness of Pinus nigra bark against cambium damage due to overheating after the passage of fire, this study addressed the influence of additional variables that had not been sufficiently clarified to date.…”

Section: Introductionmentioning

confidence: 99%

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Prescribed burning to reduce fire severity: effects on pine forests in the Iberian System

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Quercus suber cork as a keystone trait for fire response: A flammability analysis using bench and field scales

Cited by 12 publications

References 32 publications

Using Digital Photography to Track Understory Phenology in Mediterranean Cork Oak Woodlands

Using Digital Photography to Track Understory Phenology in Mediterranean Cork Oak Woodlands

AVALIAÇÃO DO DETRIMENTO CAUSADO POR INCÊNDIO EM PLANTIO DE Pinus caribaea var. hondurensis, EM IPAMERI-GO

Prescribed burning to reduce fire severity: effects on pine forests in the Iberian System

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