Effects of the Environment and Spatial Factors on the Regeneration of Araucaria Forest Fragments, Southern Brazil

Duarte, Samara Welter; Hoffmann, Luc; Maçaneiro, João Paulo de; Fenilli, Tatiele Anete Bergamo; Schorn, Lauri Amândio

doi:10.15666/aeer/1704_95779589

Cited by 2 publications

(5 citation statements)

References 21 publications

(36 reference statements)

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“…Among the five species best positioned in the density ranking in the regenerating component of PEAR, only Cupania vernalis, Casearia decandra and Matayba elaeagnoides are common with those best positioned in other fragments of MOF in the south of SC (Higuchi et al 2015;Maçaneiro et al 2016;Duarte et al 2019) and in Rio Grande do Sul state (Silva et al 2010a). There was also no coincidence between the 10 species with the highest rate of natural regeneration between this and the study of regeneration in upper montane MOF in SC (Rosa et al 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The reduction in the number of species for the larger classes may be related to the characteristics of the life history of these species, such as the variation in shade tolerance at different stages of the life cycle. Among the factors that influenced the distribution of regenerating species in the MOF is the variation related to the canopy opening (Duarte et al 2019), and studies have shown that the luminosity variation within the forest influences the species distribution (Higuchi et al 2015;Duarte et al 2019). Therefore, the history of PEAR exploitation and canopy disturbances caused by climatic events could justify the floristic differences between PEAR and other studies of MOF regeneration (Caldato et al 1996;Higuchi et al 2015;Duarte et al 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Among the factors that influenced the distribution of regenerating species in the MOF is the variation related to the canopy opening (Duarte et al 2019), and studies have shown that the luminosity variation within the forest influences the species distribution (Higuchi et al 2015;Duarte et al 2019). Therefore, the history of PEAR exploitation and canopy disturbances caused by climatic events could justify the floristic differences between PEAR and other studies of MOF regeneration (Caldato et al 1996;Higuchi et al 2015;Duarte et al 2019). Despite the presence of 41% of the species in the three size classes, of the 99 species surveyed in this study, 74 have TNR less than 1.0, indicating that these species may have a higher degree of difficulty to regenerate in the future (Silva et al 2010b).…”

Section: Discussionmentioning

confidence: 99%

“…Some studies on natural regeneration of MOF have been developed in SC (e.g. Caldato et al 1996;Meyer et al 2013;Fiorentin et al 2015;Higuchi et al 2015;Maçaneiro et al 2016;Rosa et al 2016;Duarte et al 2019;Vefago et al 2019). Caldato et al (1996) found that, although Araucaria angustifolia was the dominant species in the forest canopy, it did not show individuals in natural regeneration.…”

Section: Introductionmentioning

confidence: 99%

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Natural regeneration in a mixed ombrophilous forest remnant in southern Brazil

Passos¹,

Prado²,

Fontana³

et al. 2021

NBC

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The study of forest regeneration allows the diagnosis of conservation status of fragments and estimating population parameters that are essential for management projects. This study evaluated the structure, diversity and dynamics of the tree regenerating component of a remnant of mixed ombrophilous forest, aiming to support management actions for this forest type. The study was developed at the Parque Estadual das Araucárias (PEAR), located in the western region of the state of Santa Catarina, southern Brazil. A total of 100 plots of 25 m2 (0.25 ha) were allocated, all individuals with height ≥ 1.0 m and DBH < 5 cm were sampled. Shannon’s diversity index (H’), Pielou’s equability index (J) and total natural regeneration rate (TNR) were estimated. We sampled 1,425 individuals from 99 species and 39 families, with an estimated total density of 5,700 individuals by hectare. The richest families were Fabaceae (13), Myrtaceae (10) and Lauraceae (7). The H’ was 3.76 and the J was 0.80. The TNR rate ranged from 0.05 to 8.12%, highlighting Trichilia elegans, with the highest rate and Araucaria angustifolia with low potential for natural regeneration. The analysis of the results indicated a high diversity in the regenerating component of the PEAR compared to other studies, probably because the area presents itself as a successional mosaic due to past disturbances.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Natural regeneration in a mixed ombrophilous forest remnant in southern Brazil

Passos¹,

Prado²,

Fontana³

et al. 2021

NBC

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“…Herbaceous species predominate in regenerated degraded areas and in recovering forests due to their more open canopy. Such areas include anthropized areas that have a fallow interval, and secondary vegetation (Piaia et al 2017, Duarte et al 2019, Santos et al, 2020.…”

Section: Floristic Compositionmentioning

confidence: 99%

Assessment of the Soil Seed Bank Aiming at Transposition to Forest Regeneration in the Western Amazonia

Araújo

Alves

Melo

et al. 2022

JAS

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This study evaluated the soil seed bank’s germination potential and density in five distinct environmental areas namely: a) regenerated forest, b) secondary forest, c) degraded pasture, d) Eucalyptus sp. plantation and e) fallow corn growing area, with a view to regenerate forests in Western Amazonia using tray germination methodology. We assessed floristic similarity and diversity using the Jaccard Similarity Index and the Shannon Diversity Index, respectively. We computed each species’ phytosociological parameters: density, frequency and importance value of each species. We recorded a total 3674 individuals from 51 species and 21 families. The families with the highest species richness were Asteraceae, Malvaceae, Cyperaceae and Poaceae that contributed to 43% of the total species observed. The most important species computed in the phytosociological analysis were Chamaesyce hirta, Corchorus aestuans, Cyperus iria and Chamaesyce prostrata. All species had a herbaceous life form, which in the literature, are considered weeds. We documented the largest number of individuals in the fallow corn growing area that had 3620 plants m-2 and the smallest number in the regenerated forest that had 183 plants m-2. We observed the greatest floristic similarity between the secondary forest and Eucalyptus sp. plantation (40%), and the greatest floristic diversity in the Eucalyptus sp. plantation (H '= 2.59 nats individual-1). In conclusion, the transposition of the soil seed bank is not recommended for forest regeneration and recovery in degraded areas due to massive weed predominance in the soil seed bank.

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Effects of the Environment and Spatial Factors on the Regeneration of Araucaria Forest Fragments, Southern Brazil

Cited by 2 publications

References 21 publications

Natural regeneration in a mixed ombrophilous forest remnant in southern Brazil

Natural regeneration in a mixed ombrophilous forest remnant in southern Brazil

Assessment of the Soil Seed Bank Aiming at Transposition to Forest Regeneration in the Western Amazonia

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