Forest structure and woody plant species composition after a wildfire in beech forests in the north of Iran

Adel, Mohammad Naghi; Pourbabaei, Hassan; Omidi, Ali; Dey, Daniel C.

doi:10.1007/s11676-012-0316-7

Cited by 11 publications

(3 citation statements)

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“…Climate change will modify survival probabilities of trees due to both changes in average climatic conditions and alterations in disturbance regimes (Allen et al 2010, Seidl et al 2017). The past decades illustrated that ongoing changes in climate and land‐use may result in increasing burns across all forested biomes (van Lierop et al 2015), including an expansion of mixed‐severity fire regimes into ecosystems where fire is currently rare or absent (Adel et al 2013, Adámek et al 2015, Ascoli et al 2015). In order to develop appropriate silvicultural rehabilitations and conservation measures in forest ecosystems where mixed‐severity fires occur or will act as novel disturbance forced by climate change, understanding post‐fire mortality processes and related factors is of paramount importance (Scott et al 2002, Hood et al 2018).…”

Section: Introductionmentioning

confidence: 99%

A new approach for modeling delayed fire‐induced tree mortality

et al. 2021

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Global change is expanding the ecological niche of mixed-severity fire regimes into ecosystems that have not usually been associated with wildfires, such as temperate forests and rainforests. In contrast to stand-replacing fires, mixed-severity fires may result in delayed tree mortality driven by secondary factors such as post-fire environmental conditions. Because these effects vary as a function of time post-fire, their study using commonly applied logistic regression models is challenging. Here, we propose overcoming this challenge through the application of time-explicit survival models such as the Kaplan-Meier (KM-) estimator and the Cox proportional-hazards (PH-) model. We use data on tree mortality after mixed-severity fires in beech forests to (1) illustrate temporal trends in the survival probabilities and the mortality hazard of beech, (2) estimate annual survival probabilities for different burn severities, and (3) consider driving factors with possible time-dependent effects. Based on our results, we argue that the combination of KM-estimator and Cox-PH models have the potential of substantially improve the analysis of delayed post-disturbance tree mortality by answering when and why tree mortality occurs. The results provide more specific information for implementing post-fire management measures.

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Section: Introductionmentioning

confidence: 99%

A new approach for modeling delayed fire‐induced tree mortality

et al. 2021

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“…In these forests, oriental beech (Fagus orientalis Lipsky.) stands and hornbeam (Carpinus betulus L.) stands represent the greatest volume (Adel, Pourbabaei, Omidi, & Dey, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of mixed beech and hornbeam stands on soil properties and plant species diversity indices in Hyrcanian forests of Iran

Marefat

Rad

Khanalizadeh

2020

MYB

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Revealing the effect of mixed beech and hornbeam stands on herb layer diversity is essential for sustainable forestry and biodiversity conservation since little is known in Hyrcanian forests. So, we studied the effects of such stands on understory diversity and soil physico-chemical properties in Hyrcanian forests of Iran. Forty sampled plots were established by random systematic sampling method with a regular 100 m × 200 m grid. At each sample point we recorded species identity and percent cover of each tree layer and herb layer species within plots of size 400 m2 (20 m × 20 m) and 100 m2 (10 m ×10 m) respectively. Soil samples were taken from 0 cm -10 cm and 10 cm - 30 cm soil depths. Cluster analysis was used to classify the samples based on the floristic composition data. Also detrended correspondence analysis (DCA) method was employed to assess the relationship between vegetation and environmental variables. There was no significant difference in terms of species richness, and diversity between mixed beech stands and hornbeam stands, but cluster analysis indicated that these stands were separated in two different groups based on herb layer species composition. DCA results showed that litter thickness, soil texture, total nitrogen, and organic carbon in the first layer were considered effective environmental variables in the distribution of sample plots in two stands. We observed that tree layer composition and soil characteristics were crucial contributors to variations of understory species composition which may be changed by forest management approaches over time. Tree layer composition and soil attributes can be considered effective factors for controlling and assessment of understory plant species composition. These findings could provide guidelines for conserving plant species diversity within any framework of sustainable forest management in Hyrcanian forests.

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“…Beech forests are the richest forest community in Iran because they are both economically and environmentally valuable. Forests dominated by the oriental beech (Fagus orientalis) cover about 565 000 ha and represent the total area of indigenous forests in Guilan Province (Adel et al 2012b Fadaei (2008) discussed successful growth of this species in their studies. In the region under the study, Pinus taeda was planted in 1968.…”

Section: Introductionmentioning

confidence: 99%

Effect of repeated fire on understory plant species diversity in Saravan forests, northern Iran

Daryayi¹,

Adel²,

Pashaki³

et al. 2013

Folia Forestalia Polonica, Seria a - Forestry

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Fire usually causes changes in the composition and diversity of herbaceous species. The present paper aimed to study the effect of repeated fire incidents on understory species diversity in the Saravan forests of Guilan Province located in the north of Iran. To do so, three 50-hectare areas with identical physiographical conditions and overstory (hand-planted softwood Pinus taeda) were selected. Seven fire incidences occurred for the 10-year period in one of the areas and the other area experienced three fire incidents within the same period. The area with no fire incidents was considered as the control area. All the fire incidents were surface ones. The systematic random method with a sample size 100 × 200 m was used for collecting data. Based on the above, 25 samples were determined in each area. The whole coverage of the understory was taken into consideration using Whittaker's method and the Domain criterion so as to calculate species diversity indices. The results showed that Shannon-Wiener diversity and Menhinick's richness in the regions which experienced 3 and 7 fire incidents were maximum and minimum, respectively, whereas no significant difference was seen between the regions with regard to Smith and Wilson's evenness index.

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Forest structure and woody plant species composition after a wildfire in beech forests in the north of Iran

Cited by 11 publications

References 50 publications

A new approach for modeling delayed fire‐induced tree mortality

A new approach for modeling delayed fire‐induced tree mortality

Effects of mixed beech and hornbeam stands on soil properties and plant species diversity indices in Hyrcanian forests of Iran

Effect of repeated fire on understory plant species diversity in Saravan forests, northern Iran

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