Aboveground biomass quantification and tree-level prediction models for the Brazilian subtropical Atlantic Forest

Uller, Heitor Felippe; Oliveira, Laio Zimermann; Klitzke, Aline Renata; Eleotério, Jackson Roberto; Fantini, Alfredo Celso; Vibrans, Alexander Christian

doi:10.2989/00306525.2019.1581498

Cited by 12 publications

(7 citation statements)

References 37 publications

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“…The aboveground biomass (AGB) for each stem was predicted using the allometric model constructed by Uller et al (2019) based on 105 individuals harvested in the study area (Eq. 1):…”

Section: Discussionmentioning

confidence: 99%

Structure, Biomass and Diversity of a Late-Successional Subtropical Atlantic Forest in Brazil

et al. 2022

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The highly biodiverse Atlantic Forest has been heavily exploited and its remnant areas, which are mostly composed of secondary forests, cover less than 20% of its original extension. This study analyzed the structure, aboveground biomass (AGB) and species diversity of a secondary evergreen rainforest in the state of Santa Catarina, southern Brazil. Individuals with diameter at breast height ≥ 5 cm on 22 sample plots were measured, totalizing 3.49 hectares of sampled area. A mean AGB of 201.6 Mg ha -1 (standard deviation = 35.5) was found; Hyeronima alchorneoides and Miconia cinnamomifolia represented 29.1% and 7.6% of the community AGB ha -1 , respectively. A total of 153 species distributed in 107 genera and 55 families was observed; it was estimated that 121 species (95% confidence interval: [117, 125]) occurred in one hectare. These results highlight the importance of secondary forests for biodiversity restoration/conservation and carbon sequestration.

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“…The aboveground biomass (AGB) for each stem was predicted using the allometric model constructed by Uller et al (2019) based on 105 individuals harvested in the study area (Eq. 1):…”

Section: Discussionmentioning

confidence: 99%

Structure, Biomass and Diversity of a Late-Successional Subtropical Atlantic Forest in Brazil

et al. 2022

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“…The present study is part of a comprehensive research currently under development in the Atlantic Forest biome. Previous studies in the same research area have already investigated the economic potential of secondary Atlantic Forests (Fantini et al 2019;Fantini and Siminski 2017;Trevisan et al 2016;Zambiazi et al 2021), volumetric models and aboveground biomass (Oliveira et al 2018;Uller et al 2021Uller et al , 2019; regeneration of woody species (Piazza et al 2017); as well as productivity and costs of timber harvesting operations (Britto et al 2017), harvesting impacts caused by forest management (Britto et al 2019;Bulfe et al 2009;Ruy et al 2014;Silva et al 2018) and impacts on canopy architecture after logging (Silva & Vibrans 2019).…”

Section: Introductionmentioning

confidence: 99%

Multi-year, post-harvesting impact assessment in a neotropical secondary Atlantic Forest

et al. 2022

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Subject to overexploitation in the past centuries, the Atlantic Forest is subject to very rigorous protection rules. However, the law is a controversial issue since landowners are not compensated for the limited choice of land use possibilities. We believe that, alternatively to a general timber harvest ban, sustainable forest management of the Atlantic Forest has the potential to generate income for the landowners while sustaining important ecological functions of the forest. Such choice would require better understanding of the potential effects of timber harvesting on the forest ecosystem and on species composition and succession over time. In this context, we assessed the harvesting impact of a conventional harvesting method (CM) and compared it to an alternative harvesting method (AM) in three different stands (stands A, B and C) of a secondary forest fragment in southern Brazil. Results from three comprehensive forest inventories over a period of two years were used to assess the timber harvesting impact. Measurements of species composition (i.e., number of species, life form, ecological group), forest structure (i.e., density, basal area, DBH, volume) and saplings density formed the basis of the impact assessment. The inventories were carried out before, immediately after and two years after harvesting. Intensities of damage on remnant trees immediately after harvesting and two years after harvesting were also measured. Before harvesting, a total of 114 tree species (trees, tree fern and palm tree) belonging to 49 families were identified in the study site’s three research stands. Palm trees and secondary species, such as Euterpe edulis, represented the majority of recruited individuals (DBH ≥ 5 cm) two years after harvesting. However, new saplings (DBH ≤ 5 cm) after two years were mainly pioneer woody tree species, such as Cecropia glaziovii and Schizolobium parahyba. On average, AM reduced damage to saplings by 5%. Most of the damages caused by CM were moderate to severe, while AM caused light to moderate damages. Binary logistic regression indicated dependency of the mortality rates on the independent variables “stand, stem and leaning damages.” On the other hand, the recovery rates of damaged trees were dependent on crown, stem and leaning damages. Therefore, two years after harvesting a higher mortality rate of low-dimensional trees was observed in stands with high density of smaller trees and high density of improvement felling. Although crown damages were not related to mortality rates, high intensity of crown damages reduced recovery rates over time.

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“…In order to make the best use of available timber resources without harming ecosystem dynamics, it is essential to adopt planning techniques based on mathematical models that allow the prediction of production under the effect of forest interventions (Scolforo, 1998;Schmitz, 2013). However, there is still a superficial understanding of the patterns and factors of forest dynamics after logging, especially in the secondary forests of the Atlantic Coast, where only a few scientific studies and forest management experiments have been developed (Uller et al, 2019;Vibrans, 2019;Britto, 2017).…”

Section: Introductionmentioning

confidence: 99%

Canopy recovery four years after logging: a management study in a southern brazilian secondary forest

Likoski

Vibrans

Silva

et al. 2021

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Background: Understanding forest dynamics after logging is essential to define forest management cycles and intensities. In secondary forest, especially in the Atlantic Forest Domain, these studies are still scarce. Monitoring of the canopy structure after tree harvesting can be performed by hemispherical photographs, where canopy opening is commonly analyzed. This study evaluated changes in canopy opening four years after tree harvesting in a secondary Atlantic Rainforest in southern Brazil. We used hemispherical photographs to determine the Canopy Openness (CO), Leaf Area Index (LAI), and Diffuse Fraction of Photosynthetically Active Absorbed Radiation (FAPAR dif ) in eleven permanent plots. Results:We found that harvesting resulted in a momentary increase in canopy opening and light availability in the understory. Four years after harvesting, CO, LAI and FAPAR dif recovered or even exceeded the original values of the forest. We observed a significant correlation between CO and number of trees harvested with DBH > 30 cm. Weak correlations were found between these canopy related variables and the logging intensity. Conclusion:In conclusion, we recognized that changes of CO, LAI and FAPAR dif after timber harvesting presented short duration. This indicates that the applied logging intensities, 21.8 to 51.1% of the total basal area, did not exceed the resilience of the forest canopy and it's recovering four years later. However, additional studies should be carried out to observe vegetation dynamics, such as species composition, vertical structure, productivity and community stability, in order to improve management schemes of secondary stands in the Atlantic Forest.

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Aboveground biomass quantification and tree-level prediction models for the Brazilian subtropical Atlantic Forest

Cited by 12 publications

References 37 publications

Structure, Biomass and Diversity of a Late-Successional Subtropical Atlantic Forest in Brazil

Structure, Biomass and Diversity of a Late-Successional Subtropical Atlantic Forest in Brazil

Multi-year, post-harvesting impact assessment in a neotropical secondary Atlantic Forest

Canopy recovery four years after logging: a management study in a southern brazilian secondary forest

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