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      Population structure, spatial distribution and phenology of Anacardium humile A. St.-Hil. (Anacardiaceae) in cerrado stricto sensu Translated title: Estrutura populacional, distribuição espacial e fenologia de Anacardium humile A. St.-Hil. (Anacardiaceae) em cerrado stricto sensu

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          Abstract

          ABSTRACT This study determined the size structure, spatial distribution, and phenology of individuals from a population of Anacardium humile A. St.-Hil. in a cerrado stricto sensu area. Four sample plots (100 × 100 m each) were randomly selected in the Quilombola Kalunga land. Within the plots, we counted the number of individuals and measured the height, basal diameter, number of tree branches and recorded their location and the presence of rocky outcrops. For the phenological analysis, sixteen individuals were monitored between May 2016 and April 2017. A total of 417 individuals were inventoried, which resulted in an average density of 104.25 ind ha-1 (± 60.35). The abundance of individuals was higher in the rocky outcrops and with an aggregate spatial distribution. The population is self-regenerating. Phenological changes were concentrated in the dry season and were influenced by lower precipitation rates, maximum temperature, and relative humidity.

          Translated abstract

          RESUMO Este estudo analisou a estrutura de tamanho, a distribuição espacial e a fenologia dos indivíduos de uma população de Anacardium humile A. St.-Hil. em cerrado sentido restrito. Foram alocadas aleatoriamente quatro parcelas (100 × 100 m cada) na terra Quilombola Kalunga. Dentro das parcelas cada indivíduo foi contabilizado e teve mensurada a altura, diâmetro basal, quantidade de ramos e anotações quanto a sua localização e a presença de afloramentos rochosos. Para a fenologia, dezesseis indivíduos foram monitorados entre maio de 2016 a abril de 2017. Foram inventariados 417 indivíduos que resultaram na densidade média de 104.25 ind ha-1 (± 60,35). A abundância de indivíduos foi maior nos afloramentos rochosos e o padrão de distribuição espacial foi do tipo agregado. A população é auto-regenerativa. As alterações fenológicas concentraram no período seco e foram influenciadas pelas menores taxas de precipitação, temperatura máxima e umidade relativa do ar.

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          Most cited references 74

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          Herbivores and the Number of Tree Species in Tropical Forests

           Daniel Janzen (1970)
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            Spatial patterns of seed dispersal, their determinants and consequences for recruitment.

            Growing interest in spatial ecology is promoting new approaches to the study of seed dispersal, one of the key processes determining the spatial structure of plant populations. Seed-dispersion patterns vary among plant species, populations and individuals, at different distances from parents, different microsites and different times. Recent field studies have made progress in elucidating the mechanisms behind these patterns and the implications of these patterns for recruitment success. Together with the development and refinement of mathematical models, this promises a deeper, more mechanistic understanding of dispersal processes and their consequences.
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              Seed Dispersal of the Tropical Tree, Platypodium Elegans, and the Escape of its Seedlings from Fungal Pathogens

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                hoehnea
                Hoehnea
                Hoehnea
                Instituto de Botânica (São Paulo, SP, Brazil )
                0073-2877
                2236-8906
                September 2018
                : 0
                : 0
                Affiliations
                Goiânia GO orgnameInstituto Brasileiro de Meio Ambiente e dos Recursos Naturais Renováveis Brasil
                Anápolis Goiás orgnameUniversidade Estadual de Goiás orgdiv1Laboratório de Pesquisa Ecológica e Educação Científica Brazil
                Article
                03103 S2236-89062018005003103
                10.1590/2236-8906-81/2017

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 121, Pages: 0
                Product
                Product Information: SciELO Brazil

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