Distribuição diamétrica de espécies da Floresta Ombrófila Densa no Sul do Estado do Rio de Janeiro

Cysneiros, Vinicius Costa; Júnior, Joaquim de Oliveira Mendonça; Gaui, Tatiana Dias; Moraes, Juan Carlos Resende de; Braz, Denise Monte; Machado, Sebastião do Amaral

doi:10.4336/2017.pfb.37.89.1070

Cited by 8 publications

(16 citation statements)

References 13 publications

(26 reference statements)

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“…In relation to the diameter distribution of the individuals in the study area, other works carried out on the same typology, as that of Araújo et al (2015), Marchiori et al (2016), Cysneiros et al (2017), Lima et al (2017) also showed a higher propo rtion of individuals in smaller diameter classes, indicating that it is a factor associated with the natural dynamics in multiannual forests, whose high number of regenerating individuals compensates for mortality over time (Dalla Lana et al 2013).…”

Section: Discussionmentioning

confidence: 72%

Structure and Spatial Pattern of Vegetation in a Fragment of Atlantic Forest

2019

Aust. J. Basic & Appl. Sci.

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The degradation of the Atlantic Forest is a reflection of the occupation and irrational exploitation of natural resources, which resulted in a drastic reduction of vegetation cover and fragmentation of these habitats. Thus, the objective of this study was to evaluate the species diversity, horizontal structure and spatial pattern of a fragment of Atlantic. Ten plots with dimensions of 10 m x 25 m (250 m²), were distributed in a completely random manner in the area. The data were obtained from the identification and measurement of the arboreal individuals with circumference at the breast height (Cbh) at 1.30 m of the soil > 15 cm. The total height was estimated by using a 6 m long ruler positioned near the individual to be measured. The horizontal structure was calculated based on the following phytosociological parameters: density, frequency, dominance, importance value and diversity indices (Shannon Index-H ' and Pielou Equability-J). The spatial distribution pattern of the species was analyzed for the ten of the highest absolute density observed in the phytosociological analysis of the fragment. For this, we used the MacGuinnes index. The diversity Shannon Index was 3.37 nats. ind.-1 and the Pielou equability index of 0.83. In general, the species presented an aggregate pattern of distribution in the area, with emphasis on the species Miconia prasina (Sw.) DC. and Myrcia splendens (Sw.) DC. and Byrsonima crassifolia that presented a random pattern, this information is necessary for future management and conservation actions in the region.

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Section: Discussionmentioning

confidence: 72%

Structure and Spatial Pattern of Vegetation in a Fragment of Atlantic Forest

2019

Aust. J. Basic & Appl. Sci.

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“…Os indivíduos foram distribuídos em cinco classes de diâmetro, e com isso pode-se observar que nos três anos das medições a distribuição diamétrica apresentou o formato de J-invertido, típico da estrutura diamétrica das florestas mistas (MARANGON et al, 2016;MAZON et al, 2016;CYSNEIROS et al, 2017;MARTINS et al, 2017;SANTOS et al, 2017;TRAUTENMÜLLER et al, 2019) (Figura 1). Também foi observado elevado número de indivíduos nas menores classes diamétricas, demonstrando que a floresta está se regenerando.…”

Section: Resultsunclassified

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VOGEL¹,

SILVA²,

WATZLAWICK³

2019

Rev. Bras. Biom.

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“…The K-S test was used to compare the observed and estimated cumulative distributions of the adjusted functions, using the following formula: d cal =, where d cal represents the calculated K-S statistic, which reflects the maximum difference between F o (X) and F e (X); F o (X) represents the observed cumulative frequency; F e (X) represents the expected cumulative frequency (estimated by the model); and n represents the number of observations (Orellana et al, 2014;Marangon et al, 2016;Cysneiros et al, 2017).…”

Section: Quality Of Adjustmentsmentioning

confidence: 99%

Diameter Structure, Spatial Pattern, and Management Scenarios of Acapu Trees: A Case Study

et al. 2021

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We investigated the spatial distribution of population data and diameter classes and modeled the diameter structure of Vouacapoua americana Aubl. (Acapu) trees in a community forest management area. A forest census of trees with diameters ≥ 33 cm was carried out in the 2015 Annual Production Unit (APU-2015). Ripley's univariate K function and the global Moran's index were used to describe spatial autocorrelation. Three harvest intensities (50, 70, and 80%) were simulated for the potential trees. The Weibull (3P) function provided the best performance to describe the diameter distribution of the original tree population, as well as in the harvested 50 and 70% intensities. In general, the spatial pattern of V. americana was aggregated. However, other natural factors, as population size, dynamics, geographic distribution, should be used as indicators for forest management and conservation of the specie.

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Distribuição diamétrica de espécies da Floresta Ombrófila Densa no Sul do Estado do Rio de Janeiro

Cited by 8 publications

References 13 publications

Structure and Spatial Pattern of Vegetation in a Fragment of Atlantic Forest

Structure and Spatial Pattern of Vegetation in a Fragment of Atlantic Forest

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Diameter Structure, Spatial Pattern, and Management Scenarios of Acapu Trees: A Case Study

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