Variação sazonal e interanual na dinâmica populacional de Croton blanchetianus em uma floresta tropical seca

Nascimento, Izabelle Silva; Santos, Josiene Maria Falcão Fraga dos; Silva, Renata Christina Souza; Santos, Danielle Melo dos; Silva, Kleber Andrade da; Araújo, Elcida de Lima

doi:10.4336/2017.pfb.37.92.1191

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…According to the literature, seasonality is a preponderant factor in the physiological quality of seeds (Griz & Machado, 2001;Carvalho & Nakagawa, 2012;Marcos Filho, 2015, Nascimento et al, 2017. Nunes et al (2008) say that the optimal moment for M. urundeuva seed harvest should be rigorously determined, since factors such as rainfall and temperature are determinants in the seed maturation process and, consequently, in the germination and seedling emergence process.…”

Section: Resultsmentioning

confidence: 99%

Chronological analysis of the physiological quality of diaspores of Myracrodruon urundeuva Fr. All. in semiarid regions

et al. 2018

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The objective of this study was to evaluate the physiological quality of diaspores from Myracrodruon urundeuva mother trees developing in the Cariri region of the state of Paraíba, Brazil. The seeds were collected during three consecutive years and from different areas of the Cariri region. The seed collection areas comprised two sites in the municipality of Boa Vista and one in the municipality of São João do Cariri. The diaspores had their water content determined and were submitted to the following tests: germination, seedling emergence, first count of germination and seedling emergence (within 5 days), and speed of germination and seedling emergence. The treatment means were compared using the deviance statistic. The collection years and collection areas were compared by the Tukey test at a 5% probability level. The comparison between mother trees was made through principal component analysis and cluster analysis. The detected variation in the quality of M. urundeuva diaspores is dependent on environmental conditions. The physiological quality of M. urundeuva diaspores varies according to mother tree, collection area and year. Mother trees of groups 1 and 2 are the most promising since they included representatives of all three areas and produced diaspores of high physiological quality.

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Section: Resultsmentioning

confidence: 99%

Chronological analysis of the physiological quality of diaspores of Myracrodruon urundeuva Fr. All. in semiarid regions

et al. 2018

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“…Nesse caso, a curva se apresenta de forma assíntota. No início, o crescimento é lento, esse acelera até o ponto de inflexão, que corresponde à metade da capacidade de suporte (normalmente designada como K) (NASCIMENTO et al,2017). A partir do ponto de inflexão o crescimento desacelera até a população estabilizar no valor de K (CRUZ et al, 2016).…”

Section: Formas De Crescimento Populacionalunclassified

Estado Atual de Conhecimento de Dinâmica de Populações

Silva

Pelli

2019

Ens. Cienc.

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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.

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Variação sazonal e interanual na dinâmica populacional de Croton blanchetianus em uma floresta tropical seca

Cited by 2 publications

References 16 publications

<b>Chronological analysis of the physiological quality of diaspores of <i>Myracrodruon urundeuva</i> Fr. All. in semiarid regions

<b>Chronological analysis of the physiological quality of diaspores of <i>Myracrodruon urundeuva</i> Fr. All. in semiarid regions

Estado Atual de Conhecimento de Dinâmica de Populações

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