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Fruit production and spatial structure of populations of tropical trees

Grant number: 14/11559-1
Support type:Scholarships in Brazil - Master
Effective date (Start): January 01, 2015
Effective date (End): February 29, 2016
Field of knowledge:Biological Sciences - Ecology
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Flavio Antonio Maës dos Santos
Grantee:Kelly Fernandes de Oliveira Ribeiro
Home Institution: Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


The aggregated spatial pattern is commonly observed in tropical species and increase or decrease the aggregation may be related to higher fruit production by taller individuals, due to contribution to higher seed density. However, there is not study that related this production with the aggregation degree of populations of tropical species. Thus, the objective of this study is to discover if the higher fruit production leads more or less aggregation in three ornithochorous tree species in lowland atlantic rainforest. For this, our studies will use collected data of phenology, size (DSH and crown volume), ontogenetic stage and all individuals location of three species in two non-contiguous permanent plots each. We will characterize the flowering and fructification intensity and duration with Fournier intensity index and activity index, respectively. We will realize a multinomial logistic regression between adults DSH and amount fruit produced to see if taller individuals produce more fruit. Thus, we will quantify the samplings aggregation below parental plants using the univariate pair-correlation function and we will do simple regression between amount fruit produced and the samplings aggregations. We will also use the univariate pair-correlation function to quantify the juveniles and immature aggregation below parental plants, in order to determine if there is change in the aggregation degree of subsequent ontogenetic stages. Finally, we will use the bivariate pair-correlation function to determine how it is the spatial relation between subsequent ontogenetic stages. (AU)

Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
RIBEIRO, Kelly Fernandes de Oliveira. Fruit production and spatial pattern of populations of tropical trees. 2016. Master's Dissertation.

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