Estrutura populacional e distribuição espacial de Alexa canaracunensis em uma floresta estacional semidecidual submontana no norte de Roraima, Amazônia brasileira

Oliveira, Rodrigo Leonardo Costa de; Stöffel, Nelcimar Mauro; Farias, Hugo Leonardo Sousa

doi:10.24979/makunaima.v1i2.462

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In northern Roraima, in the Amazon, the Alexacanaracunensis population growing in a seasonal semi-deciduous submontane forest displayed a regular pattern (OLIVEIRA et al, 2018), while in Floresta de Várzea, the Carapa spp. Adult trees were found in an aggregated spatial distribution pattern (ABREU et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Pattern and spatial associations of commercial trees in the Amazon

et al. 2021

View full text Add to dashboard Cite

This study was conducted to establish the pattern and the spatial associations of the Amazon commercial tree groups. In a region extending across 2,000 ha in the Tapajós National Forest (FNT), Pará, a forest census was conducted. The census included commercial trees of perimeter at breast height (PBH), equal to or greater than 158 cm and the Cartesian coordinates of their bearings. Using Ripley’s K function, the spatial pattern was discerned, with 5 m radius being assumed, and maximum distances varying up to 1,500 m. Then, with 99.8% probability for both, 500 Monte Carlo simulations were performed for the univariate K function, and 500 toroidal simulations were done for the bivariate function.The commercial tree groups, which revealed an aggregated spatial pattern in a minimum of approximately 50% of the analysis distance were namely, Astronium lecointei, Bagassa guianensis, Couratari guianensis, Manilkara huberi, Mezilaurus itauba, and Vochysia maxima. In Brazil, the commercial tree groups, based on the commercialization criteria for tropical trees show random and aggregated spatial patterns with associations of spatial independence.

show abstract

Section: Introductionmentioning

confidence: 99%

Pattern and spatial associations of commercial trees in the Amazon

et al. 2021

View full text Add to dashboard Cite

show abstract

Estado Atual de Conhecimento de Dinâmica de Populações

Silva

Pelli

2019

Ens. Cienc.

View full text Add to dashboard Cite

Compreender os mecanismos que regulam a dinâmica das populações espacialmente estruturadas é um desafio crítico para os ecólogos e gestores de conservação. A dinâmica de populações é um ramo da ecologia que estuda as populações como sistema em atividades, relacionando as influências ambientais com a distribuição e abundância dos indivíduos e suas interações com o ambiente. O presente artigo é uma revisão bibliográfica, com o objetivo de identificar produções científicas relevantes sobre dinâmica populacional. Para isso, foram utilizados periódicos revisados por pares, na base de Periódicos Capes. A pesquisa foi realizada em junho de 2019, utilizando-se as palavras-chave para título contendo: "population dynamics" e no assunto “ecology”, a partir de 2014, quando o texto completo estava disponível. Foram considerados como critérios de exclusão os artigos publicados antes de 2014. Após a leitura dos títulos dos artigos, foram selecionados 34 artigos que foram lidos na íntegra. Em livros disponíveis no acervo da biblioteca da Universidade Federal do Triângulo Mineiro, foram selecionados quatro livros no tema dinâmica populacional. O referencial teórico aborda os aspectos da dinâmica de populações, tabela de vida, formas de crescimento e interações populacionais. Ressalta-se a necessidade de novos estudos que ainda possuem lacunas, que venha complementar e contribuir para o conhecimento de organismos que faltam ou ainda não possuem registros de estudos. Palavras-chave: Taxas de Natalidade e Mortalidade. Atributos Populacionais. Dispersão. AbstractUnderstanding the mechanisms that regulate the dynamics of spatially structured populations is a critical challenge for ecologists and conservation managers. Population dynamics is a branch of ecology that studies populations as a system in activities, relating environmental influences to the individuals’ distribution and abundance and their interactions with the environment. This article is a bibliographic review, aiming to identify relevant scientific productions about population dynamics. Thus. peer-reviewed journals were used in the Capes Periodicals base, the research was conducted in June 2019, using the keywords for title containing "population dynamics" and in the subject "ecology", from 2014, when the full text was available. Exclusion criteria were: articles published before 2014, after reading the article titles, 34 articles were selected that met the initially proposed criteria and were read in full. In books available in the library collection of the Federal University of Triângulo Mineiro, with a search for the dynamic population theme, 4 books were used. The theoretical framework addresses the aspects of population dynamics, life table, forms of growth and population interactions. It is emphasized the need for further studies that still have gaps, which will complement and contribute to the knowledge of organisms that are missing or do not have study records. Keywords: Birth and Mortality Rates. Population Attributes. Dispersion.

show abstract

Estrutura populacional e distribuição espacial de Alexa canaracunensis em uma floresta estacional semidecidual submontana no norte de Roraima, Amazônia brasileira

Cited by 2 publications

References 0 publications

Pattern and spatial associations of commercial trees in the Amazon

Pattern and spatial associations of commercial trees in the Amazon

Estado Atual de Conhecimento de Dinâmica de Populações

Contact Info

Product

Resources

About